<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta name="generator" content="rustdoc">
<meta name="description" content="Source to the Rust file `/home/dimitris/.cargo/registry/src/github.com-1ecc6299db9ec823/rust-crypto-0.2.36/src/blockmodes.rs`.">
<meta name="keywords" content="rust, rustlang, rust-lang">
<title>blockmodes.rs.html -- source</title>
<link rel="stylesheet" type="text/css" href="../../normalize.css">
<link rel="stylesheet" type="text/css" href="../../rustdoc.css">
<link rel="stylesheet" type="text/css" href="../../main.css">
</head>
<body class="rustdoc">
<!--[if lte IE 8]>
<div class="warning">
This old browser is unsupported and will most likely display funky
things.
</div>
<![endif]-->
<nav class="sidebar">
</nav>
<nav class="sub">
<form class="search-form js-only">
<div class="search-container">
<input class="search-input" name="search"
autocomplete="off"
placeholder="Click or press ‘S’ to search, ‘?’ for more options…"
type="search">
</div>
</form>
</nav>
<section id='main' class="content source"><pre class="line-numbers"><span id="1"> 1</span>
<span id="2"> 2</span>
<span id="3"> 3</span>
<span id="4"> 4</span>
<span id="5"> 5</span>
<span id="6"> 6</span>
<span id="7"> 7</span>
<span id="8"> 8</span>
<span id="9"> 9</span>
<span id="10"> 10</span>
<span id="11"> 11</span>
<span id="12"> 12</span>
<span id="13"> 13</span>
<span id="14"> 14</span>
<span id="15"> 15</span>
<span id="16"> 16</span>
<span id="17"> 17</span>
<span id="18"> 18</span>
<span id="19"> 19</span>
<span id="20"> 20</span>
<span id="21"> 21</span>
<span id="22"> 22</span>
<span id="23"> 23</span>
<span id="24"> 24</span>
<span id="25"> 25</span>
<span id="26"> 26</span>
<span id="27"> 27</span>
<span id="28"> 28</span>
<span id="29"> 29</span>
<span id="30"> 30</span>
<span id="31"> 31</span>
<span id="32"> 32</span>
<span id="33"> 33</span>
<span id="34"> 34</span>
<span id="35"> 35</span>
<span id="36"> 36</span>
<span id="37"> 37</span>
<span id="38"> 38</span>
<span id="39"> 39</span>
<span id="40"> 40</span>
<span id="41"> 41</span>
<span id="42"> 42</span>
<span id="43"> 43</span>
<span id="44"> 44</span>
<span id="45"> 45</span>
<span id="46"> 46</span>
<span id="47"> 47</span>
<span id="48"> 48</span>
<span id="49"> 49</span>
<span id="50"> 50</span>
<span id="51"> 51</span>
<span id="52"> 52</span>
<span id="53"> 53</span>
<span id="54"> 54</span>
<span id="55"> 55</span>
<span id="56"> 56</span>
<span id="57"> 57</span>
<span id="58"> 58</span>
<span id="59"> 59</span>
<span id="60"> 60</span>
<span id="61"> 61</span>
<span id="62"> 62</span>
<span id="63"> 63</span>
<span id="64"> 64</span>
<span id="65"> 65</span>
<span id="66"> 66</span>
<span id="67"> 67</span>
<span id="68"> 68</span>
<span id="69"> 69</span>
<span id="70"> 70</span>
<span id="71"> 71</span>
<span id="72"> 72</span>
<span id="73"> 73</span>
<span id="74"> 74</span>
<span id="75"> 75</span>
<span id="76"> 76</span>
<span id="77"> 77</span>
<span id="78"> 78</span>
<span id="79"> 79</span>
<span id="80"> 80</span>
<span id="81"> 81</span>
<span id="82"> 82</span>
<span id="83"> 83</span>
<span id="84"> 84</span>
<span id="85"> 85</span>
<span id="86"> 86</span>
<span id="87"> 87</span>
<span id="88"> 88</span>
<span id="89"> 89</span>
<span id="90"> 90</span>
<span id="91"> 91</span>
<span id="92"> 92</span>
<span id="93"> 93</span>
<span id="94"> 94</span>
<span id="95"> 95</span>
<span id="96"> 96</span>
<span id="97"> 97</span>
<span id="98"> 98</span>
<span id="99"> 99</span>
<span id="100"> 100</span>
<span id="101"> 101</span>
<span id="102"> 102</span>
<span id="103"> 103</span>
<span id="104"> 104</span>
<span id="105"> 105</span>
<span id="106"> 106</span>
<span id="107"> 107</span>
<span id="108"> 108</span>
<span id="109"> 109</span>
<span id="110"> 110</span>
<span id="111"> 111</span>
<span id="112"> 112</span>
<span id="113"> 113</span>
<span id="114"> 114</span>
<span id="115"> 115</span>
<span id="116"> 116</span>
<span id="117"> 117</span>
<span id="118"> 118</span>
<span id="119"> 119</span>
<span id="120"> 120</span>
<span id="121"> 121</span>
<span id="122"> 122</span>
<span id="123"> 123</span>
<span id="124"> 124</span>
<span id="125"> 125</span>
<span id="126"> 126</span>
<span id="127"> 127</span>
<span id="128"> 128</span>
<span id="129"> 129</span>
<span id="130"> 130</span>
<span id="131"> 131</span>
<span id="132"> 132</span>
<span id="133"> 133</span>
<span id="134"> 134</span>
<span id="135"> 135</span>
<span id="136"> 136</span>
<span id="137"> 137</span>
<span id="138"> 138</span>
<span id="139"> 139</span>
<span id="140"> 140</span>
<span id="141"> 141</span>
<span id="142"> 142</span>
<span id="143"> 143</span>
<span id="144"> 144</span>
<span id="145"> 145</span>
<span id="146"> 146</span>
<span id="147"> 147</span>
<span id="148"> 148</span>
<span id="149"> 149</span>
<span id="150"> 150</span>
<span id="151"> 151</span>
<span id="152"> 152</span>
<span id="153"> 153</span>
<span id="154"> 154</span>
<span id="155"> 155</span>
<span id="156"> 156</span>
<span id="157"> 157</span>
<span id="158"> 158</span>
<span id="159"> 159</span>
<span id="160"> 160</span>
<span id="161"> 161</span>
<span id="162"> 162</span>
<span id="163"> 163</span>
<span id="164"> 164</span>
<span id="165"> 165</span>
<span id="166"> 166</span>
<span id="167"> 167</span>
<span id="168"> 168</span>
<span id="169"> 169</span>
<span id="170"> 170</span>
<span id="171"> 171</span>
<span id="172"> 172</span>
<span id="173"> 173</span>
<span id="174"> 174</span>
<span id="175"> 175</span>
<span id="176"> 176</span>
<span id="177"> 177</span>
<span id="178"> 178</span>
<span id="179"> 179</span>
<span id="180"> 180</span>
<span id="181"> 181</span>
<span id="182"> 182</span>
<span id="183"> 183</span>
<span id="184"> 184</span>
<span id="185"> 185</span>
<span id="186"> 186</span>
<span id="187"> 187</span>
<span id="188"> 188</span>
<span id="189"> 189</span>
<span id="190"> 190</span>
<span id="191"> 191</span>
<span id="192"> 192</span>
<span id="193"> 193</span>
<span id="194"> 194</span>
<span id="195"> 195</span>
<span id="196"> 196</span>
<span id="197"> 197</span>
<span id="198"> 198</span>
<span id="199"> 199</span>
<span id="200"> 200</span>
<span id="201"> 201</span>
<span id="202"> 202</span>
<span id="203"> 203</span>
<span id="204"> 204</span>
<span id="205"> 205</span>
<span id="206"> 206</span>
<span id="207"> 207</span>
<span id="208"> 208</span>
<span id="209"> 209</span>
<span id="210"> 210</span>
<span id="211"> 211</span>
<span id="212"> 212</span>
<span id="213"> 213</span>
<span id="214"> 214</span>
<span id="215"> 215</span>
<span id="216"> 216</span>
<span id="217"> 217</span>
<span id="218"> 218</span>
<span id="219"> 219</span>
<span id="220"> 220</span>
<span id="221"> 221</span>
<span id="222"> 222</span>
<span id="223"> 223</span>
<span id="224"> 224</span>
<span id="225"> 225</span>
<span id="226"> 226</span>
<span id="227"> 227</span>
<span id="228"> 228</span>
<span id="229"> 229</span>
<span id="230"> 230</span>
<span id="231"> 231</span>
<span id="232"> 232</span>
<span id="233"> 233</span>
<span id="234"> 234</span>
<span id="235"> 235</span>
<span id="236"> 236</span>
<span id="237"> 237</span>
<span id="238"> 238</span>
<span id="239"> 239</span>
<span id="240"> 240</span>
<span id="241"> 241</span>
<span id="242"> 242</span>
<span id="243"> 243</span>
<span id="244"> 244</span>
<span id="245"> 245</span>
<span id="246"> 246</span>
<span id="247"> 247</span>
<span id="248"> 248</span>
<span id="249"> 249</span>
<span id="250"> 250</span>
<span id="251"> 251</span>
<span id="252"> 252</span>
<span id="253"> 253</span>
<span id="254"> 254</span>
<span id="255"> 255</span>
<span id="256"> 256</span>
<span id="257"> 257</span>
<span id="258"> 258</span>
<span id="259"> 259</span>
<span id="260"> 260</span>
<span id="261"> 261</span>
<span id="262"> 262</span>
<span id="263"> 263</span>
<span id="264"> 264</span>
<span id="265"> 265</span>
<span id="266"> 266</span>
<span id="267"> 267</span>
<span id="268"> 268</span>
<span id="269"> 269</span>
<span id="270"> 270</span>
<span id="271"> 271</span>
<span id="272"> 272</span>
<span id="273"> 273</span>
<span id="274"> 274</span>
<span id="275"> 275</span>
<span id="276"> 276</span>
<span id="277"> 277</span>
<span id="278"> 278</span>
<span id="279"> 279</span>
<span id="280"> 280</span>
<span id="281"> 281</span>
<span id="282"> 282</span>
<span id="283"> 283</span>
<span id="284"> 284</span>
<span id="285"> 285</span>
<span id="286"> 286</span>
<span id="287"> 287</span>
<span id="288"> 288</span>
<span id="289"> 289</span>
<span id="290"> 290</span>
<span id="291"> 291</span>
<span id="292"> 292</span>
<span id="293"> 293</span>
<span id="294"> 294</span>
<span id="295"> 295</span>
<span id="296"> 296</span>
<span id="297"> 297</span>
<span id="298"> 298</span>
<span id="299"> 299</span>
<span id="300"> 300</span>
<span id="301"> 301</span>
<span id="302"> 302</span>
<span id="303"> 303</span>
<span id="304"> 304</span>
<span id="305"> 305</span>
<span id="306"> 306</span>
<span id="307"> 307</span>
<span id="308"> 308</span>
<span id="309"> 309</span>
<span id="310"> 310</span>
<span id="311"> 311</span>
<span id="312"> 312</span>
<span id="313"> 313</span>
<span id="314"> 314</span>
<span id="315"> 315</span>
<span id="316"> 316</span>
<span id="317"> 317</span>
<span id="318"> 318</span>
<span id="319"> 319</span>
<span id="320"> 320</span>
<span id="321"> 321</span>
<span id="322"> 322</span>
<span id="323"> 323</span>
<span id="324"> 324</span>
<span id="325"> 325</span>
<span id="326"> 326</span>
<span id="327"> 327</span>
<span id="328"> 328</span>
<span id="329"> 329</span>
<span id="330"> 330</span>
<span id="331"> 331</span>
<span id="332"> 332</span>
<span id="333"> 333</span>
<span id="334"> 334</span>
<span id="335"> 335</span>
<span id="336"> 336</span>
<span id="337"> 337</span>
<span id="338"> 338</span>
<span id="339"> 339</span>
<span id="340"> 340</span>
<span id="341"> 341</span>
<span id="342"> 342</span>
<span id="343"> 343</span>
<span id="344"> 344</span>
<span id="345"> 345</span>
<span id="346"> 346</span>
<span id="347"> 347</span>
<span id="348"> 348</span>
<span id="349"> 349</span>
<span id="350"> 350</span>
<span id="351"> 351</span>
<span id="352"> 352</span>
<span id="353"> 353</span>
<span id="354"> 354</span>
<span id="355"> 355</span>
<span id="356"> 356</span>
<span id="357"> 357</span>
<span id="358"> 358</span>
<span id="359"> 359</span>
<span id="360"> 360</span>
<span id="361"> 361</span>
<span id="362"> 362</span>
<span id="363"> 363</span>
<span id="364"> 364</span>
<span id="365"> 365</span>
<span id="366"> 366</span>
<span id="367"> 367</span>
<span id="368"> 368</span>
<span id="369"> 369</span>
<span id="370"> 370</span>
<span id="371"> 371</span>
<span id="372"> 372</span>
<span id="373"> 373</span>
<span id="374"> 374</span>
<span id="375"> 375</span>
<span id="376"> 376</span>
<span id="377"> 377</span>
<span id="378"> 378</span>
<span id="379"> 379</span>
<span id="380"> 380</span>
<span id="381"> 381</span>
<span id="382"> 382</span>
<span id="383"> 383</span>
<span id="384"> 384</span>
<span id="385"> 385</span>
<span id="386"> 386</span>
<span id="387"> 387</span>
<span id="388"> 388</span>
<span id="389"> 389</span>
<span id="390"> 390</span>
<span id="391"> 391</span>
<span id="392"> 392</span>
<span id="393"> 393</span>
<span id="394"> 394</span>
<span id="395"> 395</span>
<span id="396"> 396</span>
<span id="397"> 397</span>
<span id="398"> 398</span>
<span id="399"> 399</span>
<span id="400"> 400</span>
<span id="401"> 401</span>
<span id="402"> 402</span>
<span id="403"> 403</span>
<span id="404"> 404</span>
<span id="405"> 405</span>
<span id="406"> 406</span>
<span id="407"> 407</span>
<span id="408"> 408</span>
<span id="409"> 409</span>
<span id="410"> 410</span>
<span id="411"> 411</span>
<span id="412"> 412</span>
<span id="413"> 413</span>
<span id="414"> 414</span>
<span id="415"> 415</span>
<span id="416"> 416</span>
<span id="417"> 417</span>
<span id="418"> 418</span>
<span id="419"> 419</span>
<span id="420"> 420</span>
<span id="421"> 421</span>
<span id="422"> 422</span>
<span id="423"> 423</span>
<span id="424"> 424</span>
<span id="425"> 425</span>
<span id="426"> 426</span>
<span id="427"> 427</span>
<span id="428"> 428</span>
<span id="429"> 429</span>
<span id="430"> 430</span>
<span id="431"> 431</span>
<span id="432"> 432</span>
<span id="433"> 433</span>
<span id="434"> 434</span>
<span id="435"> 435</span>
<span id="436"> 436</span>
<span id="437"> 437</span>
<span id="438"> 438</span>
<span id="439"> 439</span>
<span id="440"> 440</span>
<span id="441"> 441</span>
<span id="442"> 442</span>
<span id="443"> 443</span>
<span id="444"> 444</span>
<span id="445"> 445</span>
<span id="446"> 446</span>
<span id="447"> 447</span>
<span id="448"> 448</span>
<span id="449"> 449</span>
<span id="450"> 450</span>
<span id="451"> 451</span>
<span id="452"> 452</span>
<span id="453"> 453</span>
<span id="454"> 454</span>
<span id="455"> 455</span>
<span id="456"> 456</span>
<span id="457"> 457</span>
<span id="458"> 458</span>
<span id="459"> 459</span>
<span id="460"> 460</span>
<span id="461"> 461</span>
<span id="462"> 462</span>
<span id="463"> 463</span>
<span id="464"> 464</span>
<span id="465"> 465</span>
<span id="466"> 466</span>
<span id="467"> 467</span>
<span id="468"> 468</span>
<span id="469"> 469</span>
<span id="470"> 470</span>
<span id="471"> 471</span>
<span id="472"> 472</span>
<span id="473"> 473</span>
<span id="474"> 474</span>
<span id="475"> 475</span>
<span id="476"> 476</span>
<span id="477"> 477</span>
<span id="478"> 478</span>
<span id="479"> 479</span>
<span id="480"> 480</span>
<span id="481"> 481</span>
<span id="482"> 482</span>
<span id="483"> 483</span>
<span id="484"> 484</span>
<span id="485"> 485</span>
<span id="486"> 486</span>
<span id="487"> 487</span>
<span id="488"> 488</span>
<span id="489"> 489</span>
<span id="490"> 490</span>
<span id="491"> 491</span>
<span id="492"> 492</span>
<span id="493"> 493</span>
<span id="494"> 494</span>
<span id="495"> 495</span>
<span id="496"> 496</span>
<span id="497"> 497</span>
<span id="498"> 498</span>
<span id="499"> 499</span>
<span id="500"> 500</span>
<span id="501"> 501</span>
<span id="502"> 502</span>
<span id="503"> 503</span>
<span id="504"> 504</span>
<span id="505"> 505</span>
<span id="506"> 506</span>
<span id="507"> 507</span>
<span id="508"> 508</span>
<span id="509"> 509</span>
<span id="510"> 510</span>
<span id="511"> 511</span>
<span id="512"> 512</span>
<span id="513"> 513</span>
<span id="514"> 514</span>
<span id="515"> 515</span>
<span id="516"> 516</span>
<span id="517"> 517</span>
<span id="518"> 518</span>
<span id="519"> 519</span>
<span id="520"> 520</span>
<span id="521"> 521</span>
<span id="522"> 522</span>
<span id="523"> 523</span>
<span id="524"> 524</span>
<span id="525"> 525</span>
<span id="526"> 526</span>
<span id="527"> 527</span>
<span id="528"> 528</span>
<span id="529"> 529</span>
<span id="530"> 530</span>
<span id="531"> 531</span>
<span id="532"> 532</span>
<span id="533"> 533</span>
<span id="534"> 534</span>
<span id="535"> 535</span>
<span id="536"> 536</span>
<span id="537"> 537</span>
<span id="538"> 538</span>
<span id="539"> 539</span>
<span id="540"> 540</span>
<span id="541"> 541</span>
<span id="542"> 542</span>
<span id="543"> 543</span>
<span id="544"> 544</span>
<span id="545"> 545</span>
<span id="546"> 546</span>
<span id="547"> 547</span>
<span id="548"> 548</span>
<span id="549"> 549</span>
<span id="550"> 550</span>
<span id="551"> 551</span>
<span id="552"> 552</span>
<span id="553"> 553</span>
<span id="554"> 554</span>
<span id="555"> 555</span>
<span id="556"> 556</span>
<span id="557"> 557</span>
<span id="558"> 558</span>
<span id="559"> 559</span>
<span id="560"> 560</span>
<span id="561"> 561</span>
<span id="562"> 562</span>
<span id="563"> 563</span>
<span id="564"> 564</span>
<span id="565"> 565</span>
<span id="566"> 566</span>
<span id="567"> 567</span>
<span id="568"> 568</span>
<span id="569"> 569</span>
<span id="570"> 570</span>
<span id="571"> 571</span>
<span id="572"> 572</span>
<span id="573"> 573</span>
<span id="574"> 574</span>
<span id="575"> 575</span>
<span id="576"> 576</span>
<span id="577"> 577</span>
<span id="578"> 578</span>
<span id="579"> 579</span>
<span id="580"> 580</span>
<span id="581"> 581</span>
<span id="582"> 582</span>
<span id="583"> 583</span>
<span id="584"> 584</span>
<span id="585"> 585</span>
<span id="586"> 586</span>
<span id="587"> 587</span>
<span id="588"> 588</span>
<span id="589"> 589</span>
<span id="590"> 590</span>
<span id="591"> 591</span>
<span id="592"> 592</span>
<span id="593"> 593</span>
<span id="594"> 594</span>
<span id="595"> 595</span>
<span id="596"> 596</span>
<span id="597"> 597</span>
<span id="598"> 598</span>
<span id="599"> 599</span>
<span id="600"> 600</span>
<span id="601"> 601</span>
<span id="602"> 602</span>
<span id="603"> 603</span>
<span id="604"> 604</span>
<span id="605"> 605</span>
<span id="606"> 606</span>
<span id="607"> 607</span>
<span id="608"> 608</span>
<span id="609"> 609</span>
<span id="610"> 610</span>
<span id="611"> 611</span>
<span id="612"> 612</span>
<span id="613"> 613</span>
<span id="614"> 614</span>
<span id="615"> 615</span>
<span id="616"> 616</span>
<span id="617"> 617</span>
<span id="618"> 618</span>
<span id="619"> 619</span>
<span id="620"> 620</span>
<span id="621"> 621</span>
<span id="622"> 622</span>
<span id="623"> 623</span>
<span id="624"> 624</span>
<span id="625"> 625</span>
<span id="626"> 626</span>
<span id="627"> 627</span>
<span id="628"> 628</span>
<span id="629"> 629</span>
<span id="630"> 630</span>
<span id="631"> 631</span>
<span id="632"> 632</span>
<span id="633"> 633</span>
<span id="634"> 634</span>
<span id="635"> 635</span>
<span id="636"> 636</span>
<span id="637"> 637</span>
<span id="638"> 638</span>
<span id="639"> 639</span>
<span id="640"> 640</span>
<span id="641"> 641</span>
<span id="642"> 642</span>
<span id="643"> 643</span>
<span id="644"> 644</span>
<span id="645"> 645</span>
<span id="646"> 646</span>
<span id="647"> 647</span>
<span id="648"> 648</span>
<span id="649"> 649</span>
<span id="650"> 650</span>
<span id="651"> 651</span>
<span id="652"> 652</span>
<span id="653"> 653</span>
<span id="654"> 654</span>
<span id="655"> 655</span>
<span id="656"> 656</span>
<span id="657"> 657</span>
<span id="658"> 658</span>
<span id="659"> 659</span>
<span id="660"> 660</span>
<span id="661"> 661</span>
<span id="662"> 662</span>
<span id="663"> 663</span>
<span id="664"> 664</span>
<span id="665"> 665</span>
<span id="666"> 666</span>
<span id="667"> 667</span>
<span id="668"> 668</span>
<span id="669"> 669</span>
<span id="670"> 670</span>
<span id="671"> 671</span>
<span id="672"> 672</span>
<span id="673"> 673</span>
<span id="674"> 674</span>
<span id="675"> 675</span>
<span id="676"> 676</span>
<span id="677"> 677</span>
<span id="678"> 678</span>
<span id="679"> 679</span>
<span id="680"> 680</span>
<span id="681"> 681</span>
<span id="682"> 682</span>
<span id="683"> 683</span>
<span id="684"> 684</span>
<span id="685"> 685</span>
<span id="686"> 686</span>
<span id="687"> 687</span>
<span id="688"> 688</span>
<span id="689"> 689</span>
<span id="690"> 690</span>
<span id="691"> 691</span>
<span id="692"> 692</span>
<span id="693"> 693</span>
<span id="694"> 694</span>
<span id="695"> 695</span>
<span id="696"> 696</span>
<span id="697"> 697</span>
<span id="698"> 698</span>
<span id="699"> 699</span>
<span id="700"> 700</span>
<span id="701"> 701</span>
<span id="702"> 702</span>
<span id="703"> 703</span>
<span id="704"> 704</span>
<span id="705"> 705</span>
<span id="706"> 706</span>
<span id="707"> 707</span>
<span id="708"> 708</span>
<span id="709"> 709</span>
<span id="710"> 710</span>
<span id="711"> 711</span>
<span id="712"> 712</span>
<span id="713"> 713</span>
<span id="714"> 714</span>
<span id="715"> 715</span>
<span id="716"> 716</span>
<span id="717"> 717</span>
<span id="718"> 718</span>
<span id="719"> 719</span>
<span id="720"> 720</span>
<span id="721"> 721</span>
<span id="722"> 722</span>
<span id="723"> 723</span>
<span id="724"> 724</span>
<span id="725"> 725</span>
<span id="726"> 726</span>
<span id="727"> 727</span>
<span id="728"> 728</span>
<span id="729"> 729</span>
<span id="730"> 730</span>
<span id="731"> 731</span>
<span id="732"> 732</span>
<span id="733"> 733</span>
<span id="734"> 734</span>
<span id="735"> 735</span>
<span id="736"> 736</span>
<span id="737"> 737</span>
<span id="738"> 738</span>
<span id="739"> 739</span>
<span id="740"> 740</span>
<span id="741"> 741</span>
<span id="742"> 742</span>
<span id="743"> 743</span>
<span id="744"> 744</span>
<span id="745"> 745</span>
<span id="746"> 746</span>
<span id="747"> 747</span>
<span id="748"> 748</span>
<span id="749"> 749</span>
<span id="750"> 750</span>
<span id="751"> 751</span>
<span id="752"> 752</span>
<span id="753"> 753</span>
<span id="754"> 754</span>
<span id="755"> 755</span>
<span id="756"> 756</span>
<span id="757"> 757</span>
<span id="758"> 758</span>
<span id="759"> 759</span>
<span id="760"> 760</span>
<span id="761"> 761</span>
<span id="762"> 762</span>
<span id="763"> 763</span>
<span id="764"> 764</span>
<span id="765"> 765</span>
<span id="766"> 766</span>
<span id="767"> 767</span>
<span id="768"> 768</span>
<span id="769"> 769</span>
<span id="770"> 770</span>
<span id="771"> 771</span>
<span id="772"> 772</span>
<span id="773"> 773</span>
<span id="774"> 774</span>
<span id="775"> 775</span>
<span id="776"> 776</span>
<span id="777"> 777</span>
<span id="778"> 778</span>
<span id="779"> 779</span>
<span id="780"> 780</span>
<span id="781"> 781</span>
<span id="782"> 782</span>
<span id="783"> 783</span>
<span id="784"> 784</span>
<span id="785"> 785</span>
<span id="786"> 786</span>
<span id="787"> 787</span>
<span id="788"> 788</span>
<span id="789"> 789</span>
<span id="790"> 790</span>
<span id="791"> 791</span>
<span id="792"> 792</span>
<span id="793"> 793</span>
<span id="794"> 794</span>
<span id="795"> 795</span>
<span id="796"> 796</span>
<span id="797"> 797</span>
<span id="798"> 798</span>
<span id="799"> 799</span>
<span id="800"> 800</span>
<span id="801"> 801</span>
<span id="802"> 802</span>
<span id="803"> 803</span>
<span id="804"> 804</span>
<span id="805"> 805</span>
<span id="806"> 806</span>
<span id="807"> 807</span>
<span id="808"> 808</span>
<span id="809"> 809</span>
<span id="810"> 810</span>
<span id="811"> 811</span>
<span id="812"> 812</span>
<span id="813"> 813</span>
<span id="814"> 814</span>
<span id="815"> 815</span>
<span id="816"> 816</span>
<span id="817"> 817</span>
<span id="818"> 818</span>
<span id="819"> 819</span>
<span id="820"> 820</span>
<span id="821"> 821</span>
<span id="822"> 822</span>
<span id="823"> 823</span>
<span id="824"> 824</span>
<span id="825"> 825</span>
<span id="826"> 826</span>
<span id="827"> 827</span>
<span id="828"> 828</span>
<span id="829"> 829</span>
<span id="830"> 830</span>
<span id="831"> 831</span>
<span id="832"> 832</span>
<span id="833"> 833</span>
<span id="834"> 834</span>
<span id="835"> 835</span>
<span id="836"> 836</span>
<span id="837"> 837</span>
<span id="838"> 838</span>
<span id="839"> 839</span>
<span id="840"> 840</span>
<span id="841"> 841</span>
<span id="842"> 842</span>
<span id="843"> 843</span>
<span id="844"> 844</span>
<span id="845"> 845</span>
<span id="846"> 846</span>
<span id="847"> 847</span>
<span id="848"> 848</span>
<span id="849"> 849</span>
<span id="850"> 850</span>
<span id="851"> 851</span>
<span id="852"> 852</span>
<span id="853"> 853</span>
<span id="854"> 854</span>
<span id="855"> 855</span>
<span id="856"> 856</span>
<span id="857"> 857</span>
<span id="858"> 858</span>
<span id="859"> 859</span>
<span id="860"> 860</span>
<span id="861"> 861</span>
<span id="862"> 862</span>
<span id="863"> 863</span>
<span id="864"> 864</span>
<span id="865"> 865</span>
<span id="866"> 866</span>
<span id="867"> 867</span>
<span id="868"> 868</span>
<span id="869"> 869</span>
<span id="870"> 870</span>
<span id="871"> 871</span>
<span id="872"> 872</span>
<span id="873"> 873</span>
<span id="874"> 874</span>
<span id="875"> 875</span>
<span id="876"> 876</span>
<span id="877"> 877</span>
<span id="878"> 878</span>
<span id="879"> 879</span>
<span id="880"> 880</span>
<span id="881"> 881</span>
<span id="882"> 882</span>
<span id="883"> 883</span>
<span id="884"> 884</span>
<span id="885"> 885</span>
<span id="886"> 886</span>
<span id="887"> 887</span>
<span id="888"> 888</span>
<span id="889"> 889</span>
<span id="890"> 890</span>
<span id="891"> 891</span>
<span id="892"> 892</span>
<span id="893"> 893</span>
<span id="894"> 894</span>
<span id="895"> 895</span>
<span id="896"> 896</span>
<span id="897"> 897</span>
<span id="898"> 898</span>
<span id="899"> 899</span>
<span id="900"> 900</span>
<span id="901"> 901</span>
<span id="902"> 902</span>
<span id="903"> 903</span>
<span id="904"> 904</span>
<span id="905"> 905</span>
<span id="906"> 906</span>
<span id="907"> 907</span>
<span id="908"> 908</span>
<span id="909"> 909</span>
<span id="910"> 910</span>
<span id="911"> 911</span>
<span id="912"> 912</span>
<span id="913"> 913</span>
<span id="914"> 914</span>
<span id="915"> 915</span>
<span id="916"> 916</span>
<span id="917"> 917</span>
<span id="918"> 918</span>
<span id="919"> 919</span>
<span id="920"> 920</span>
<span id="921"> 921</span>
<span id="922"> 922</span>
<span id="923"> 923</span>
<span id="924"> 924</span>
<span id="925"> 925</span>
<span id="926"> 926</span>
<span id="927"> 927</span>
<span id="928"> 928</span>
<span id="929"> 929</span>
<span id="930"> 930</span>
<span id="931"> 931</span>
<span id="932"> 932</span>
<span id="933"> 933</span>
<span id="934"> 934</span>
<span id="935"> 935</span>
<span id="936"> 936</span>
<span id="937"> 937</span>
<span id="938"> 938</span>
<span id="939"> 939</span>
<span id="940"> 940</span>
<span id="941"> 941</span>
<span id="942"> 942</span>
<span id="943"> 943</span>
<span id="944"> 944</span>
<span id="945"> 945</span>
<span id="946"> 946</span>
<span id="947"> 947</span>
<span id="948"> 948</span>
<span id="949"> 949</span>
<span id="950"> 950</span>
<span id="951"> 951</span>
<span id="952"> 952</span>
<span id="953"> 953</span>
<span id="954"> 954</span>
<span id="955"> 955</span>
<span id="956"> 956</span>
<span id="957"> 957</span>
<span id="958"> 958</span>
<span id="959"> 959</span>
<span id="960"> 960</span>
<span id="961"> 961</span>
<span id="962"> 962</span>
<span id="963"> 963</span>
<span id="964"> 964</span>
<span id="965"> 965</span>
<span id="966"> 966</span>
<span id="967"> 967</span>
<span id="968"> 968</span>
<span id="969"> 969</span>
<span id="970"> 970</span>
<span id="971"> 971</span>
<span id="972"> 972</span>
<span id="973"> 973</span>
<span id="974"> 974</span>
<span id="975"> 975</span>
<span id="976"> 976</span>
<span id="977"> 977</span>
<span id="978"> 978</span>
<span id="979"> 979</span>
<span id="980"> 980</span>
<span id="981"> 981</span>
<span id="982"> 982</span>
<span id="983"> 983</span>
<span id="984"> 984</span>
<span id="985"> 985</span>
<span id="986"> 986</span>
<span id="987"> 987</span>
<span id="988"> 988</span>
<span id="989"> 989</span>
<span id="990"> 990</span>
<span id="991"> 991</span>
<span id="992"> 992</span>
<span id="993"> 993</span>
<span id="994"> 994</span>
<span id="995"> 995</span>
<span id="996"> 996</span>
<span id="997"> 997</span>
<span id="998"> 998</span>
<span id="999"> 999</span>
<span id="1000">1000</span>
<span id="1001">1001</span>
<span id="1002">1002</span>
<span id="1003">1003</span>
<span id="1004">1004</span>
<span id="1005">1005</span>
<span id="1006">1006</span>
<span id="1007">1007</span>
<span id="1008">1008</span>
<span id="1009">1009</span>
<span id="1010">1010</span>
<span id="1011">1011</span>
<span id="1012">1012</span>
<span id="1013">1013</span>
<span id="1014">1014</span>
<span id="1015">1015</span>
<span id="1016">1016</span>
<span id="1017">1017</span>
<span id="1018">1018</span>
<span id="1019">1019</span>
<span id="1020">1020</span>
<span id="1021">1021</span>
<span id="1022">1022</span>
<span id="1023">1023</span>
<span id="1024">1024</span>
<span id="1025">1025</span>
<span id="1026">1026</span>
<span id="1027">1027</span>
<span id="1028">1028</span>
<span id="1029">1029</span>
<span id="1030">1030</span>
<span id="1031">1031</span>
<span id="1032">1032</span>
<span id="1033">1033</span>
<span id="1034">1034</span>
<span id="1035">1035</span>
<span id="1036">1036</span>
<span id="1037">1037</span>
<span id="1038">1038</span>
<span id="1039">1039</span>
<span id="1040">1040</span>
<span id="1041">1041</span>
<span id="1042">1042</span>
<span id="1043">1043</span>
<span id="1044">1044</span>
<span id="1045">1045</span>
<span id="1046">1046</span>
<span id="1047">1047</span>
<span id="1048">1048</span>
<span id="1049">1049</span>
<span id="1050">1050</span>
<span id="1051">1051</span>
<span id="1052">1052</span>
<span id="1053">1053</span>
<span id="1054">1054</span>
<span id="1055">1055</span>
<span id="1056">1056</span>
<span id="1057">1057</span>
<span id="1058">1058</span>
<span id="1059">1059</span>
<span id="1060">1060</span>
<span id="1061">1061</span>
<span id="1062">1062</span>
<span id="1063">1063</span>
<span id="1064">1064</span>
<span id="1065">1065</span>
<span id="1066">1066</span>
<span id="1067">1067</span>
<span id="1068">1068</span>
<span id="1069">1069</span>
<span id="1070">1070</span>
<span id="1071">1071</span>
<span id="1072">1072</span>
<span id="1073">1073</span>
<span id="1074">1074</span>
<span id="1075">1075</span>
<span id="1076">1076</span>
<span id="1077">1077</span>
<span id="1078">1078</span>
<span id="1079">1079</span>
<span id="1080">1080</span>
<span id="1081">1081</span>
<span id="1082">1082</span>
<span id="1083">1083</span>
<span id="1084">1084</span>
<span id="1085">1085</span>
<span id="1086">1086</span>
<span id="1087">1087</span>
<span id="1088">1088</span>
<span id="1089">1089</span>
<span id="1090">1090</span>
<span id="1091">1091</span>
<span id="1092">1092</span>
<span id="1093">1093</span>
<span id="1094">1094</span>
<span id="1095">1095</span>
<span id="1096">1096</span>
<span id="1097">1097</span>
<span id="1098">1098</span>
<span id="1099">1099</span>
<span id="1100">1100</span>
<span id="1101">1101</span>
<span id="1102">1102</span>
<span id="1103">1103</span>
<span id="1104">1104</span>
<span id="1105">1105</span>
<span id="1106">1106</span>
<span id="1107">1107</span>
<span id="1108">1108</span>
<span id="1109">1109</span>
<span id="1110">1110</span>
<span id="1111">1111</span>
<span id="1112">1112</span>
<span id="1113">1113</span>
<span id="1114">1114</span>
<span id="1115">1115</span>
<span id="1116">1116</span>
<span id="1117">1117</span>
<span id="1118">1118</span>
<span id="1119">1119</span>
<span id="1120">1120</span>
<span id="1121">1121</span>
<span id="1122">1122</span>
<span id="1123">1123</span>
<span id="1124">1124</span>
<span id="1125">1125</span>
<span id="1126">1126</span>
<span id="1127">1127</span>
<span id="1128">1128</span>
<span id="1129">1129</span>
<span id="1130">1130</span>
<span id="1131">1131</span>
<span id="1132">1132</span>
<span id="1133">1133</span>
<span id="1134">1134</span>
<span id="1135">1135</span>
<span id="1136">1136</span>
<span id="1137">1137</span>
<span id="1138">1138</span>
<span id="1139">1139</span>
<span id="1140">1140</span>
<span id="1141">1141</span>
<span id="1142">1142</span>
<span id="1143">1143</span>
<span id="1144">1144</span>
<span id="1145">1145</span>
<span id="1146">1146</span>
<span id="1147">1147</span>
<span id="1148">1148</span>
<span id="1149">1149</span>
<span id="1150">1150</span>
<span id="1151">1151</span>
<span id="1152">1152</span>
<span id="1153">1153</span>
<span id="1154">1154</span>
<span id="1155">1155</span>
<span id="1156">1156</span>
<span id="1157">1157</span>
<span id="1158">1158</span>
<span id="1159">1159</span>
<span id="1160">1160</span>
<span id="1161">1161</span>
<span id="1162">1162</span>
<span id="1163">1163</span>
<span id="1164">1164</span>
<span id="1165">1165</span>
<span id="1166">1166</span>
<span id="1167">1167</span>
<span id="1168">1168</span>
<span id="1169">1169</span>
<span id="1170">1170</span>
<span id="1171">1171</span>
<span id="1172">1172</span>
<span id="1173">1173</span>
<span id="1174">1174</span>
<span id="1175">1175</span>
<span id="1176">1176</span>
<span id="1177">1177</span>
<span id="1178">1178</span>
<span id="1179">1179</span>
<span id="1180">1180</span>
<span id="1181">1181</span>
<span id="1182">1182</span>
<span id="1183">1183</span>
<span id="1184">1184</span>
<span id="1185">1185</span>
<span id="1186">1186</span>
<span id="1187">1187</span>
<span id="1188">1188</span>
<span id="1189">1189</span>
<span id="1190">1190</span>
<span id="1191">1191</span>
<span id="1192">1192</span>
<span id="1193">1193</span>
<span id="1194">1194</span>
<span id="1195">1195</span>
<span id="1196">1196</span>
<span id="1197">1197</span>
<span id="1198">1198</span>
<span id="1199">1199</span>
<span id="1200">1200</span>
<span id="1201">1201</span>
<span id="1202">1202</span>
<span id="1203">1203</span>
<span id="1204">1204</span>
<span id="1205">1205</span>
<span id="1206">1206</span>
<span id="1207">1207</span>
<span id="1208">1208</span>
<span id="1209">1209</span>
<span id="1210">1210</span>
<span id="1211">1211</span>
<span id="1212">1212</span>
<span id="1213">1213</span>
<span id="1214">1214</span>
<span id="1215">1215</span>
<span id="1216">1216</span>
<span id="1217">1217</span>
<span id="1218">1218</span>
<span id="1219">1219</span>
<span id="1220">1220</span>
<span id="1221">1221</span>
<span id="1222">1222</span>
<span id="1223">1223</span>
<span id="1224">1224</span>
<span id="1225">1225</span>
<span id="1226">1226</span>
<span id="1227">1227</span>
<span id="1228">1228</span>
<span id="1229">1229</span>
<span id="1230">1230</span>
<span id="1231">1231</span>
<span id="1232">1232</span>
<span id="1233">1233</span>
<span id="1234">1234</span>
<span id="1235">1235</span>
<span id="1236">1236</span>
<span id="1237">1237</span>
<span id="1238">1238</span>
<span id="1239">1239</span>
<span id="1240">1240</span>
<span id="1241">1241</span>
<span id="1242">1242</span>
<span id="1243">1243</span>
<span id="1244">1244</span>
<span id="1245">1245</span>
<span id="1246">1246</span>
<span id="1247">1247</span>
<span id="1248">1248</span>
<span id="1249">1249</span>
<span id="1250">1250</span>
<span id="1251">1251</span>
<span id="1252">1252</span>
<span id="1253">1253</span>
<span id="1254">1254</span>
<span id="1255">1255</span>
<span id="1256">1256</span>
<span id="1257">1257</span>
<span id="1258">1258</span>
<span id="1259">1259</span>
<span id="1260">1260</span>
<span id="1261">1261</span>
<span id="1262">1262</span>
<span id="1263">1263</span>
<span id="1264">1264</span>
<span id="1265">1265</span>
<span id="1266">1266</span>
<span id="1267">1267</span>
<span id="1268">1268</span>
<span id="1269">1269</span>
<span id="1270">1270</span>
<span id="1271">1271</span>
<span id="1272">1272</span>
<span id="1273">1273</span>
<span id="1274">1274</span>
<span id="1275">1275</span>
<span id="1276">1276</span>
<span id="1277">1277</span>
<span id="1278">1278</span>
<span id="1279">1279</span>
<span id="1280">1280</span>
<span id="1281">1281</span>
<span id="1282">1282</span>
<span id="1283">1283</span>
<span id="1284">1284</span>
<span id="1285">1285</span>
<span id="1286">1286</span>
<span id="1287">1287</span>
<span id="1288">1288</span>
<span id="1289">1289</span>
<span id="1290">1290</span>
<span id="1291">1291</span>
<span id="1292">1292</span>
<span id="1293">1293</span>
<span id="1294">1294</span>
<span id="1295">1295</span>
<span id="1296">1296</span>
<span id="1297">1297</span>
<span id="1298">1298</span>
<span id="1299">1299</span>
<span id="1300">1300</span>
<span id="1301">1301</span>
<span id="1302">1302</span>
<span id="1303">1303</span>
<span id="1304">1304</span>
<span id="1305">1305</span>
<span id="1306">1306</span>
<span id="1307">1307</span>
<span id="1308">1308</span>
<span id="1309">1309</span>
<span id="1310">1310</span>
<span id="1311">1311</span>
<span id="1312">1312</span>
<span id="1313">1313</span>
<span id="1314">1314</span>
<span id="1315">1315</span>
<span id="1316">1316</span>
<span id="1317">1317</span>
<span id="1318">1318</span>
<span id="1319">1319</span>
<span id="1320">1320</span>
<span id="1321">1321</span>
<span id="1322">1322</span>
<span id="1323">1323</span>
<span id="1324">1324</span>
<span id="1325">1325</span>
<span id="1326">1326</span>
<span id="1327">1327</span>
<span id="1328">1328</span>
<span id="1329">1329</span>
<span id="1330">1330</span>
<span id="1331">1331</span>
<span id="1332">1332</span>
<span id="1333">1333</span>
<span id="1334">1334</span>
<span id="1335">1335</span>
<span id="1336">1336</span>
<span id="1337">1337</span>
<span id="1338">1338</span>
<span id="1339">1339</span>
<span id="1340">1340</span>
<span id="1341">1341</span>
<span id="1342">1342</span>
<span id="1343">1343</span>
<span id="1344">1344</span>
<span id="1345">1345</span>
<span id="1346">1346</span>
<span id="1347">1347</span>
<span id="1348">1348</span>
<span id="1349">1349</span>
<span id="1350">1350</span>
<span id="1351">1351</span>
<span id="1352">1352</span>
<span id="1353">1353</span>
<span id="1354">1354</span>
<span id="1355">1355</span>
<span id="1356">1356</span>
<span id="1357">1357</span>
<span id="1358">1358</span>
<span id="1359">1359</span>
<span id="1360">1360</span>
<span id="1361">1361</span>
<span id="1362">1362</span>
<span id="1363">1363</span>
<span id="1364">1364</span>
<span id="1365">1365</span>
<span id="1366">1366</span>
<span id="1367">1367</span>
<span id="1368">1368</span>
<span id="1369">1369</span>
<span id="1370">1370</span>
<span id="1371">1371</span>
<span id="1372">1372</span>
<span id="1373">1373</span>
<span id="1374">1374</span>
<span id="1375">1375</span>
<span id="1376">1376</span>
<span id="1377">1377</span>
<span id="1378">1378</span>
<span id="1379">1379</span>
<span id="1380">1380</span>
<span id="1381">1381</span>
<span id="1382">1382</span>
<span id="1383">1383</span>
<span id="1384">1384</span>
<span id="1385">1385</span>
<span id="1386">1386</span>
<span id="1387">1387</span>
<span id="1388">1388</span>
<span id="1389">1389</span>
<span id="1390">1390</span>
<span id="1391">1391</span>
<span id="1392">1392</span>
<span id="1393">1393</span>
<span id="1394">1394</span>
<span id="1395">1395</span>
<span id="1396">1396</span>
<span id="1397">1397</span>
<span id="1398">1398</span>
<span id="1399">1399</span>
<span id="1400">1400</span>
<span id="1401">1401</span>
<span id="1402">1402</span>
<span id="1403">1403</span>
<span id="1404">1404</span>
<span id="1405">1405</span>
<span id="1406">1406</span>
<span id="1407">1407</span>
<span id="1408">1408</span>
<span id="1409">1409</span>
<span id="1410">1410</span>
<span id="1411">1411</span>
<span id="1412">1412</span>
<span id="1413">1413</span>
<span id="1414">1414</span>
<span id="1415">1415</span>
<span id="1416">1416</span>
<span id="1417">1417</span>
<span id="1418">1418</span>
<span id="1419">1419</span>
<span id="1420">1420</span>
<span id="1421">1421</span>
<span id="1422">1422</span>
<span id="1423">1423</span>
<span id="1424">1424</span>
<span id="1425">1425</span>
<span id="1426">1426</span>
<span id="1427">1427</span>
<span id="1428">1428</span>
<span id="1429">1429</span>
<span id="1430">1430</span>
<span id="1431">1431</span>
<span id="1432">1432</span>
<span id="1433">1433</span>
<span id="1434">1434</span>
<span id="1435">1435</span>
<span id="1436">1436</span>
<span id="1437">1437</span>
</pre><pre class='rust '>
<span class='comment'>// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or</span>
<span class='comment'>// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license</span>
<span class='comment'>// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your</span>
<span class='comment'>// option. This file may not be copied, modified, or distributed</span>
<span class='comment'>// except according to those terms.</span>
<span class='comment'>// TODO - Optimize the XORs</span>
<span class='comment'>// TODO - Maybe use macros to specialize BlockEngine for encryption or decryption?</span>
<span class='comment'>// TODO - I think padding could be done better. Maybe macros for BlockEngine would help this too.</span>
<span class='kw'>use</span> <span class='ident'>std</span>::<span class='ident'>cmp</span>;
<span class='kw'>use</span> <span class='ident'>std</span>::<span class='ident'>iter</span>::<span class='ident'>repeat</span>;
<span class='kw'>use</span> <span class='ident'>buffer</span>::{<span class='ident'>ReadBuffer</span>, <span class='ident'>WriteBuffer</span>, <span class='ident'>OwnedReadBuffer</span>, <span class='ident'>OwnedWriteBuffer</span>, <span class='ident'>BufferResult</span>,
<span class='ident'>RefReadBuffer</span>, <span class='ident'>RefWriteBuffer</span>};
<span class='kw'>use</span> <span class='ident'>buffer</span>::<span class='ident'>BufferResult</span>::{<span class='ident'>BufferUnderflow</span>, <span class='ident'>BufferOverflow</span>};
<span class='kw'>use</span> <span class='ident'>cryptoutil</span>::{<span class='self'>self</span>, <span class='ident'>symm_enc_or_dec</span>};
<span class='kw'>use</span> <span class='ident'>symmetriccipher</span>::{<span class='ident'>BlockEncryptor</span>, <span class='ident'>BlockEncryptorX8</span>, <span class='ident'>Encryptor</span>, <span class='ident'>BlockDecryptor</span>, <span class='ident'>Decryptor</span>,
<span class='ident'>SynchronousStreamCipher</span>, <span class='ident'>SymmetricCipherError</span>};
<span class='kw'>use</span> <span class='ident'>symmetriccipher</span>::<span class='ident'>SymmetricCipherError</span>::{<span class='ident'>InvalidPadding</span>, <span class='ident'>InvalidLength</span>};
<span class='doccomment'>/// The BlockProcessor trait is used to implement modes that require processing complete blocks of</span>
<span class='doccomment'>/// data. The methods of this trait are called by the BlockEngine which is in charge of properly</span>
<span class='doccomment'>/// buffering input data.</span>
<span class='kw'>trait</span> <span class='ident'>BlockProcessor</span> {
<span class='doccomment'>/// Process a block of data. The in_hist and out_hist parameters represent the input and output</span>
<span class='doccomment'>/// when the last block was processed. These values are necessary for certain modes.</span>
<span class='kw'>fn</span> <span class='ident'>process_block</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='ident'>in_hist</span>: <span class='kw-2'>&</span>[<span class='ident'>u8</span>], <span class='ident'>out_hist</span>: <span class='kw-2'>&</span>[<span class='ident'>u8</span>], <span class='ident'>input</span>: <span class='kw-2'>&</span>[<span class='ident'>u8</span>], <span class='ident'>output</span>: <span class='kw-2'>&</span><span class='kw-2'>mut</span> [<span class='ident'>u8</span>]);
}
<span class='doccomment'>/// A PaddingProcessor handles adding or removing padding</span>
<span class='kw'>pub</span> <span class='kw'>trait</span> <span class='ident'>PaddingProcessor</span> {
<span class='doccomment'>/// Add padding to the last block of input data</span>
<span class='doccomment'>/// If the mode can't handle a non-full block, it signals that error by simply leaving the block</span>
<span class='doccomment'>/// as it is which will be detected as an InvalidLength error.</span>
<span class='kw'>fn</span> <span class='ident'>pad_input</span><span class='op'><</span><span class='ident'>W</span>: <span class='ident'>WriteBuffer</span><span class='op'>></span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='ident'>input_buffer</span>: <span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>W</span>);
<span class='doccomment'>/// Remove padding from the last block of output data</span>
<span class='doccomment'>/// If false is returned, the processing fails</span>
<span class='kw'>fn</span> <span class='ident'>strip_output</span><span class='op'><</span><span class='ident'>R</span>: <span class='ident'>ReadBuffer</span><span class='op'>></span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='ident'>output_buffer</span>: <span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>R</span>) <span class='op'>-></span> <span class='ident'>bool</span>;
}
<span class='doccomment'>/// The BlockEngine is implemented as a state machine with the following states. See comments in the</span>
<span class='doccomment'>/// BlockEngine code for more information on the states.</span>
<span class='attribute'>#[<span class='ident'>derive</span>(<span class='ident'>Clone</span>, <span class='ident'>Copy</span>)]</span>
<span class='kw'>enum</span> <span class='ident'>BlockEngineState</span> {
<span class='ident'>FastMode</span>,
<span class='ident'>NeedInput</span>,
<span class='ident'>NeedOutput</span>,
<span class='ident'>LastInput</span>,
<span class='ident'>LastInput2</span>,
<span class='ident'>Finished</span>,
<span class='ident'>Error</span>(<span class='ident'>SymmetricCipherError</span>)
}
<span class='doccomment'>/// BlockEngine buffers input and output data and handles sending complete block of data to the</span>
<span class='doccomment'>/// Processor object. Additionally, BlockEngine handles logic necessary to add or remove padding by</span>
<span class='doccomment'>/// calling the appropriate methods on the Processor object.</span>
<span class='kw'>struct</span> <span class='ident'>BlockEngine</span><span class='op'><</span><span class='ident'>P</span>, <span class='ident'>X</span><span class='op'>></span> {
<span class='doccomment'>/// The block sized expected by the Processor</span>
<span class='ident'>block_size</span>: <span class='ident'>usize</span>,
<span class='doccomment'>/// in_hist and out_hist keep track of data that was input to and output from the last</span>
<span class='doccomment'>/// invocation of the process_block() method of the Processor. Depending on the mode, these may</span>
<span class='doccomment'>/// be empty vectors if history is not needed.</span>
<span class='ident'>in_hist</span>: <span class='ident'>Vec</span><span class='op'><</span><span class='ident'>u8</span><span class='op'>></span>,
<span class='ident'>out_hist</span>: <span class='ident'>Vec</span><span class='op'><</span><span class='ident'>u8</span><span class='op'>></span>,
<span class='doccomment'>/// If some input data is supplied, but not a complete blocks worth, it is stored in this buffer</span>
<span class='doccomment'>/// until enough arrives that it can be passed to the process_block() method of the Processor.</span>
<span class='ident'>in_scratch</span>: <span class='ident'>OwnedWriteBuffer</span>,
<span class='doccomment'>/// If input data is processed but there isn't enough space in the output buffer to store it,</span>
<span class='doccomment'>/// it is written into out_write_scratch. OwnedWriteBuffer's may be converted into</span>
<span class='doccomment'>/// OwnedReaderBuffers without re-allocating, so, after being written, out_write_scratch is</span>
<span class='doccomment'>/// turned into out_read_scratch. After that, if is written to the output as more output becomes</span>
<span class='doccomment'>/// available. The main point is - only out_write_scratch or out_read_scratch contains a value</span>
<span class='doccomment'>/// at any given time; never both.</span>
<span class='ident'>out_write_scratch</span>: <span class='prelude-ty'>Option</span><span class='op'><</span><span class='ident'>OwnedWriteBuffer</span><span class='op'>></span>,
<span class='ident'>out_read_scratch</span>: <span class='prelude-ty'>Option</span><span class='op'><</span><span class='ident'>OwnedReadBuffer</span><span class='op'>></span>,
<span class='doccomment'>/// The processor that implements the particular block mode.</span>
<span class='ident'>processor</span>: <span class='ident'>P</span>,
<span class='doccomment'>/// The padding processor</span>
<span class='ident'>padding</span>: <span class='ident'>X</span>,
<span class='doccomment'>/// The current state of the operation.</span>
<span class='ident'>state</span>: <span class='ident'>BlockEngineState</span>
}
<span class='kw'>fn</span> <span class='ident'>update_history</span>(<span class='ident'>in_hist</span>: <span class='kw-2'>&</span><span class='kw-2'>mut</span> [<span class='ident'>u8</span>], <span class='ident'>out_hist</span>: <span class='kw-2'>&</span><span class='kw-2'>mut</span> [<span class='ident'>u8</span>], <span class='ident'>last_in</span>: <span class='kw-2'>&</span>[<span class='ident'>u8</span>], <span class='ident'>last_out</span>: <span class='kw-2'>&</span>[<span class='ident'>u8</span>]) {
<span class='kw'>let</span> <span class='ident'>in_hist_len</span> <span class='op'>=</span> <span class='ident'>in_hist</span>.<span class='ident'>len</span>();
<span class='kw'>if</span> <span class='ident'>in_hist_len</span> <span class='op'>></span> <span class='number'>0</span> {
<span class='ident'>cryptoutil</span>::<span class='ident'>copy_memory</span>(
<span class='kw-2'>&</span><span class='ident'>last_in</span>[<span class='ident'>last_in</span>.<span class='ident'>len</span>() <span class='op'>-</span> <span class='ident'>in_hist_len</span>..],
<span class='ident'>in_hist</span>);
}
<span class='kw'>let</span> <span class='ident'>out_hist_len</span> <span class='op'>=</span> <span class='ident'>out_hist</span>.<span class='ident'>len</span>();
<span class='kw'>if</span> <span class='ident'>out_hist_len</span> <span class='op'>></span> <span class='number'>0</span> {
<span class='ident'>cryptoutil</span>::<span class='ident'>copy_memory</span>(
<span class='kw-2'>&</span><span class='ident'>last_out</span>[<span class='ident'>last_out</span>.<span class='ident'>len</span>() <span class='op'>-</span> <span class='ident'>out_hist_len</span>..],
<span class='ident'>out_hist</span>);
}
}
<span class='kw'>impl</span> <span class='op'><</span><span class='ident'>P</span>: <span class='ident'>BlockProcessor</span>, <span class='ident'>X</span>: <span class='ident'>PaddingProcessor</span><span class='op'>></span> <span class='ident'>BlockEngine</span><span class='op'><</span><span class='ident'>P</span>, <span class='ident'>X</span><span class='op'>></span> {
<span class='doccomment'>/// Create a new BlockProcessor instance with the given processor and block_size. No history</span>
<span class='doccomment'>/// will be saved.</span>
<span class='kw'>fn</span> <span class='ident'>new</span>(<span class='ident'>processor</span>: <span class='ident'>P</span>, <span class='ident'>padding</span>: <span class='ident'>X</span>, <span class='ident'>block_size</span>: <span class='ident'>usize</span>) <span class='op'>-></span> <span class='ident'>BlockEngine</span><span class='op'><</span><span class='ident'>P</span>, <span class='ident'>X</span><span class='op'>></span> {
<span class='ident'>BlockEngine</span> {
<span class='ident'>block_size</span>: <span class='ident'>block_size</span>,
<span class='ident'>in_hist</span>: <span class='ident'>Vec</span>::<span class='ident'>new</span>(),
<span class='ident'>out_hist</span>: <span class='ident'>Vec</span>::<span class='ident'>new</span>(),
<span class='ident'>in_scratch</span>: <span class='ident'>OwnedWriteBuffer</span>::<span class='ident'>new</span>(<span class='ident'>repeat</span>(<span class='number'>0</span>).<span class='ident'>take</span>(<span class='ident'>block_size</span>).<span class='ident'>collect</span>()),
<span class='ident'>out_write_scratch</span>: <span class='prelude-val'>Some</span>(<span class='ident'>OwnedWriteBuffer</span>::<span class='ident'>new</span>(<span class='ident'>repeat</span>(<span class='number'>0</span>).<span class='ident'>take</span>(<span class='ident'>block_size</span>).<span class='ident'>collect</span>())),
<span class='ident'>out_read_scratch</span>: <span class='prelude-val'>None</span>,
<span class='ident'>processor</span>: <span class='ident'>processor</span>,
<span class='ident'>padding</span>: <span class='ident'>padding</span>,
<span class='ident'>state</span>: <span class='ident'>BlockEngineState</span>::<span class='ident'>FastMode</span>
}
}
<span class='doccomment'>/// Create a new BlockProcessor instance with the given processor, block_size, and initial input</span>
<span class='doccomment'>/// and output history.</span>
<span class='kw'>fn</span> <span class='ident'>new_with_history</span>(
<span class='ident'>processor</span>: <span class='ident'>P</span>,
<span class='ident'>padding</span>: <span class='ident'>X</span>,
<span class='ident'>block_size</span>: <span class='ident'>usize</span>,
<span class='ident'>in_hist</span>: <span class='ident'>Vec</span><span class='op'><</span><span class='ident'>u8</span><span class='op'>></span>,
<span class='ident'>out_hist</span>: <span class='ident'>Vec</span><span class='op'><</span><span class='ident'>u8</span><span class='op'>></span>) <span class='op'>-></span> <span class='ident'>BlockEngine</span><span class='op'><</span><span class='ident'>P</span>, <span class='ident'>X</span><span class='op'>></span> {
<span class='ident'>BlockEngine</span> {
<span class='ident'>in_hist</span>: <span class='ident'>in_hist</span>,
<span class='ident'>out_hist</span>: <span class='ident'>out_hist</span>,
..<span class='ident'>BlockEngine</span>::<span class='ident'>new</span>(<span class='ident'>processor</span>, <span class='ident'>padding</span>, <span class='ident'>block_size</span>)
}
}
<span class='doccomment'>/// This implements the FastMode state. Ideally, the encryption or decryption operation should</span>
<span class='doccomment'>/// do the bulk of its work in FastMode. Significantly, FastMode avoids doing copies as much as</span>
<span class='doccomment'>/// possible. The FastMode state does not handle the final block of data.</span>
<span class='kw'>fn</span> <span class='ident'>fast_mode</span><span class='op'><</span><span class='ident'>R</span>: <span class='ident'>ReadBuffer</span>, <span class='ident'>W</span>: <span class='ident'>WriteBuffer</span><span class='op'>></span>(
<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>,
<span class='ident'>input</span>: <span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>R</span>,
<span class='ident'>output</span>: <span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>W</span>) <span class='op'>-></span> <span class='ident'>BlockEngineState</span> {
<span class='kw'>fn</span> <span class='ident'>has_next</span><span class='op'><</span><span class='ident'>R</span>: <span class='ident'>ReadBuffer</span>, <span class='ident'>W</span>: <span class='ident'>WriteBuffer</span><span class='op'>></span>(
<span class='ident'>input</span>: <span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>R</span>,
<span class='ident'>output</span>: <span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>W</span>,
<span class='ident'>block_size</span>: <span class='ident'>usize</span>) <span class='op'>-></span> <span class='ident'>bool</span> {
<span class='comment'>// Not the greater than - very important since this method must never process the last</span>
<span class='comment'>// block.</span>
<span class='kw'>let</span> <span class='ident'>enough_input</span> <span class='op'>=</span> <span class='ident'>input</span>.<span class='ident'>remaining</span>() <span class='op'>></span> <span class='ident'>block_size</span>;
<span class='kw'>let</span> <span class='ident'>enough_output</span> <span class='op'>=</span> <span class='ident'>output</span>.<span class='ident'>remaining</span>() <span class='op'>>=</span> <span class='ident'>block_size</span>;
<span class='ident'>enough_input</span> <span class='op'>&&</span> <span class='ident'>enough_output</span>
};
<span class='kw'>fn</span> <span class='ident'>split_at</span><span class='op'><</span><span class='lifetime'>'a</span><span class='op'>></span>(<span class='ident'>vec</span>: <span class='kw-2'>&</span><span class='lifetime'>'a</span> [<span class='ident'>u8</span>], <span class='ident'>at</span>: <span class='ident'>usize</span>) <span class='op'>-></span> (<span class='kw-2'>&</span><span class='lifetime'>'a</span> [<span class='ident'>u8</span>], <span class='kw-2'>&</span><span class='lifetime'>'a</span> [<span class='ident'>u8</span>]) {
(<span class='kw-2'>&</span><span class='ident'>vec</span>[..<span class='ident'>at</span>], <span class='kw-2'>&</span><span class='ident'>vec</span>[<span class='ident'>at</span>..])
}
<span class='comment'>// First block processing. We have to retrieve the history information from self.in_hist and</span>
<span class='comment'>// self.out_hist.</span>
<span class='kw'>if</span> <span class='op'>!</span><span class='ident'>has_next</span>(<span class='ident'>input</span>, <span class='ident'>output</span>, <span class='self'>self</span>.<span class='ident'>block_size</span>) {
<span class='kw'>if</span> <span class='ident'>input</span>.<span class='ident'>is_empty</span>() {
<span class='kw'>return</span> <span class='ident'>BlockEngineState</span>::<span class='ident'>FastMode</span>;
} <span class='kw'>else</span> {
<span class='kw'>return</span> <span class='ident'>BlockEngineState</span>::<span class='ident'>NeedInput</span>;
}
} <span class='kw'>else</span> {
<span class='kw'>let</span> <span class='ident'>next_in</span> <span class='op'>=</span> <span class='ident'>input</span>.<span class='ident'>take_next</span>(<span class='self'>self</span>.<span class='ident'>block_size</span>);
<span class='kw'>let</span> <span class='ident'>next_out</span> <span class='op'>=</span> <span class='ident'>output</span>.<span class='ident'>take_next</span>(<span class='self'>self</span>.<span class='ident'>block_size</span>);
<span class='self'>self</span>.<span class='ident'>processor</span>.<span class='ident'>process_block</span>(
<span class='kw-2'>&</span><span class='self'>self</span>.<span class='ident'>in_hist</span>[..],
<span class='kw-2'>&</span><span class='self'>self</span>.<span class='ident'>out_hist</span>[..],
<span class='ident'>next_in</span>,
<span class='ident'>next_out</span>);
}
<span class='comment'>// Process all remaing blocks. We can pull the history out of the buffers without having to</span>
<span class='comment'>// do any copies</span>
<span class='kw'>let</span> <span class='ident'>next_in_size</span> <span class='op'>=</span> <span class='self'>self</span>.<span class='ident'>in_hist</span>.<span class='ident'>len</span>() <span class='op'>+</span> <span class='self'>self</span>.<span class='ident'>block_size</span>;
<span class='kw'>let</span> <span class='ident'>next_out_size</span> <span class='op'>=</span> <span class='self'>self</span>.<span class='ident'>out_hist</span>.<span class='ident'>len</span>() <span class='op'>+</span> <span class='self'>self</span>.<span class='ident'>block_size</span>;
<span class='kw'>while</span> <span class='ident'>has_next</span>(<span class='ident'>input</span>, <span class='ident'>output</span>, <span class='self'>self</span>.<span class='ident'>block_size</span>) {
<span class='ident'>input</span>.<span class='ident'>rewind</span>(<span class='self'>self</span>.<span class='ident'>in_hist</span>.<span class='ident'>len</span>());
<span class='kw'>let</span> (<span class='ident'>in_hist</span>, <span class='ident'>next_in</span>) <span class='op'>=</span> <span class='ident'>split_at</span>(<span class='ident'>input</span>.<span class='ident'>take_next</span>(<span class='ident'>next_in_size</span>), <span class='self'>self</span>.<span class='ident'>in_hist</span>.<span class='ident'>len</span>());
<span class='ident'>output</span>.<span class='ident'>rewind</span>(<span class='self'>self</span>.<span class='ident'>out_hist</span>.<span class='ident'>len</span>());
<span class='kw'>let</span> (<span class='ident'>out_hist</span>, <span class='ident'>next_out</span>) <span class='op'>=</span> <span class='ident'>output</span>.<span class='ident'>take_next</span>(<span class='ident'>next_out_size</span>).<span class='ident'>split_at_mut</span>(
<span class='self'>self</span>.<span class='ident'>out_hist</span>.<span class='ident'>len</span>());
<span class='self'>self</span>.<span class='ident'>processor</span>.<span class='ident'>process_block</span>(
<span class='ident'>in_hist</span>,
<span class='ident'>out_hist</span>,
<span class='ident'>next_in</span>,
<span class='ident'>next_out</span>);
}
<span class='comment'>// Save the history and then transition to the next state</span>
{
<span class='ident'>input</span>.<span class='ident'>rewind</span>(<span class='self'>self</span>.<span class='ident'>in_hist</span>.<span class='ident'>len</span>());
<span class='kw'>let</span> <span class='ident'>last_in</span> <span class='op'>=</span> <span class='ident'>input</span>.<span class='ident'>take_next</span>(<span class='self'>self</span>.<span class='ident'>in_hist</span>.<span class='ident'>len</span>());
<span class='ident'>output</span>.<span class='ident'>rewind</span>(<span class='self'>self</span>.<span class='ident'>out_hist</span>.<span class='ident'>len</span>());
<span class='kw'>let</span> <span class='ident'>last_out</span> <span class='op'>=</span> <span class='ident'>output</span>.<span class='ident'>take_next</span>(<span class='self'>self</span>.<span class='ident'>out_hist</span>.<span class='ident'>len</span>());
<span class='ident'>update_history</span>(
<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>.<span class='ident'>in_hist</span>,
<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>.<span class='ident'>out_hist</span>,
<span class='ident'>last_in</span>,
<span class='ident'>last_out</span>);
}
<span class='kw'>if</span> <span class='ident'>input</span>.<span class='ident'>is_empty</span>() {
<span class='ident'>BlockEngineState</span>::<span class='ident'>FastMode</span>
} <span class='kw'>else</span> {
<span class='ident'>BlockEngineState</span>::<span class='ident'>NeedInput</span>
}
}
<span class='doccomment'>/// This method implements the BlockEngine state machine.</span>
<span class='kw'>fn</span> <span class='ident'>process</span><span class='op'><</span><span class='ident'>R</span>: <span class='ident'>ReadBuffer</span>, <span class='ident'>W</span>: <span class='ident'>WriteBuffer</span><span class='op'>></span>(
<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>,
<span class='ident'>input</span>: <span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>R</span>,
<span class='ident'>output</span>: <span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>W</span>,
<span class='ident'>eof</span>: <span class='ident'>bool</span>) <span class='op'>-></span> <span class='prelude-ty'>Result</span><span class='op'><</span><span class='ident'>BufferResult</span>, <span class='ident'>SymmetricCipherError</span><span class='op'>></span> {
<span class='comment'>// Process a block of data from in_scratch and write the result to out_write_scratch.</span>
<span class='comment'>// Finally, convert out_write_scratch into out_read_scratch.</span>
<span class='kw'>fn</span> <span class='ident'>process_scratch</span><span class='op'><</span><span class='ident'>P</span>: <span class='ident'>BlockProcessor</span>, <span class='ident'>X</span>: <span class='ident'>PaddingProcessor</span><span class='op'>></span>(<span class='ident'>me</span>: <span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>BlockEngine</span><span class='op'><</span><span class='ident'>P</span>, <span class='ident'>X</span><span class='op'>></span>) {
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>rin</span> <span class='op'>=</span> <span class='ident'>me</span>.<span class='ident'>in_scratch</span>.<span class='ident'>take_read_buffer</span>();
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>wout</span> <span class='op'>=</span> <span class='ident'>me</span>.<span class='ident'>out_write_scratch</span>.<span class='ident'>take</span>().<span class='ident'>unwrap</span>();
{
<span class='kw'>let</span> <span class='ident'>next_in</span> <span class='op'>=</span> <span class='ident'>rin</span>.<span class='ident'>take_remaining</span>();
<span class='kw'>let</span> <span class='ident'>next_out</span> <span class='op'>=</span> <span class='ident'>wout</span>.<span class='ident'>take_remaining</span>();
<span class='ident'>me</span>.<span class='ident'>processor</span>.<span class='ident'>process_block</span>(
<span class='kw-2'>&</span><span class='ident'>me</span>.<span class='ident'>in_hist</span>[..],
<span class='kw-2'>&</span><span class='ident'>me</span>.<span class='ident'>out_hist</span>[..],
<span class='ident'>next_in</span>,
<span class='ident'>next_out</span>);
<span class='ident'>update_history</span>(
<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>me</span>.<span class='ident'>in_hist</span>,
<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>me</span>.<span class='ident'>out_hist</span>,
<span class='ident'>next_in</span>,
<span class='ident'>next_out</span>);
}
<span class='kw'>let</span> <span class='ident'>rb</span> <span class='op'>=</span> <span class='ident'>wout</span>.<span class='ident'>into_read_buffer</span>();
<span class='ident'>me</span>.<span class='ident'>out_read_scratch</span> <span class='op'>=</span> <span class='prelude-val'>Some</span>(<span class='ident'>rb</span>);
};
<span class='kw'>loop</span> {
<span class='kw'>match</span> <span class='self'>self</span>.<span class='ident'>state</span> {
<span class='comment'>// FastMode tries to process as much data as possible while minimizing copies.</span>
<span class='comment'>// FastMode doesn't make use of the scratch buffers and only updates the history</span>
<span class='comment'>// just before exiting.</span>
<span class='ident'>BlockEngineState</span>::<span class='ident'>FastMode</span> <span class='op'>=></span> {
<span class='self'>self</span>.<span class='ident'>state</span> <span class='op'>=</span> <span class='self'>self</span>.<span class='ident'>fast_mode</span>(<span class='ident'>input</span>, <span class='ident'>output</span>);
<span class='kw'>match</span> <span class='self'>self</span>.<span class='ident'>state</span> {
<span class='ident'>BlockEngineState</span>::<span class='ident'>FastMode</span> <span class='op'>=></span> {
<span class='comment'>// If FastMode completes but stays in the FastMode state, it means that</span>
<span class='comment'>// we've run out of input data.</span>
<span class='kw'>return</span> <span class='prelude-val'>Ok</span>(<span class='ident'>BufferUnderflow</span>);
}
_ <span class='op'>=></span> {}
}
}
<span class='comment'>// The NeedInput mode is entered when there isn't enough data to run in FastMode</span>
<span class='comment'>// anymore. Input data is buffered in in_scratch until there is a full block or eof</span>
<span class='comment'>// occurs. IF eof doesn't occur, the data is processed and then we go to the</span>
<span class='comment'>// NeedOutput state. Otherwise, we go to the LastInput state. This state always</span>
<span class='comment'>// writes all available data into in_scratch before transitioning to the next state.</span>
<span class='ident'>BlockEngineState</span>::<span class='ident'>NeedInput</span> <span class='op'>=></span> {
<span class='ident'>input</span>.<span class='ident'>push_to</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>.<span class='ident'>in_scratch</span>);
<span class='kw'>if</span> <span class='op'>!</span><span class='ident'>input</span>.<span class='ident'>is_empty</span>() {
<span class='comment'>// !is_empty() guarantees two things - in_scratch is full and its not the</span>
<span class='comment'>// last block. This state must never process the last block.</span>
<span class='ident'>process_scratch</span>(<span class='self'>self</span>);
<span class='self'>self</span>.<span class='ident'>state</span> <span class='op'>=</span> <span class='ident'>BlockEngineState</span>::<span class='ident'>NeedOutput</span>;
} <span class='kw'>else</span> {
<span class='kw'>if</span> <span class='ident'>eof</span> {
<span class='self'>self</span>.<span class='ident'>state</span> <span class='op'>=</span> <span class='ident'>BlockEngineState</span>::<span class='ident'>LastInput</span>;
} <span class='kw'>else</span> {
<span class='kw'>return</span> <span class='prelude-val'>Ok</span>(<span class='ident'>BufferUnderflow</span>);
}
}
}
<span class='comment'>// The NeedOutput state just writes buffered processed data to the output stream</span>
<span class='comment'>// until all of it has been written.</span>
<span class='ident'>BlockEngineState</span>::<span class='ident'>NeedOutput</span> <span class='op'>=></span> {
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>rout</span> <span class='op'>=</span> <span class='self'>self</span>.<span class='ident'>out_read_scratch</span>.<span class='ident'>take</span>().<span class='ident'>unwrap</span>();
<span class='ident'>rout</span>.<span class='ident'>push_to</span>(<span class='ident'>output</span>);
<span class='kw'>if</span> <span class='ident'>rout</span>.<span class='ident'>is_empty</span>() {
<span class='self'>self</span>.<span class='ident'>out_write_scratch</span> <span class='op'>=</span> <span class='prelude-val'>Some</span>(<span class='ident'>rout</span>.<span class='ident'>into_write_buffer</span>());
<span class='self'>self</span>.<span class='ident'>state</span> <span class='op'>=</span> <span class='ident'>BlockEngineState</span>::<span class='ident'>FastMode</span>;
} <span class='kw'>else</span> {
<span class='self'>self</span>.<span class='ident'>out_read_scratch</span> <span class='op'>=</span> <span class='prelude-val'>Some</span>(<span class='ident'>rout</span>);
<span class='kw'>return</span> <span class='prelude-val'>Ok</span>(<span class='ident'>BufferOverflow</span>);
}
}
<span class='comment'>// None of the other states are allowed to process the last block of data since</span>
<span class='comment'>// last block handling is a little tricky due to modes have special needs regarding</span>
<span class='comment'>// padding. When the last block of data is detected, this state is transitioned to</span>
<span class='comment'>// for handling.</span>
<span class='ident'>BlockEngineState</span>::<span class='ident'>LastInput</span> <span class='op'>=></span> {
<span class='comment'>// We we arrive in this state, we know that all input data that is going to be</span>
<span class='comment'>// supplied has been suplied and that that data has been written to in_scratch</span>
<span class='comment'>// by the NeedInput state. Furthermore, we know that one of three things must be</span>
<span class='comment'>// true about in_scratch:</span>
<span class='comment'>// 1) It is empty. This only occurs if the input is zero length. We can do last</span>
<span class='comment'>// block processing by executing the pad_input() method of the processor</span>
<span class='comment'>// which may either pad out to a full block or leave it empty, process the</span>
<span class='comment'>// data if it was padded out to a full block, and then pass it to</span>
<span class='comment'>// strip_output().</span>
<span class='comment'>// 2) It is partially filled. This will occur if the input data was not a</span>
<span class='comment'>// multiple of the block size. Processing proceeds identically to case #1.</span>
<span class='comment'>// 3) It is full. This case occurs when the input data was a multiple of the</span>
<span class='comment'>// block size. This case is a little trickier, since, depending on the mode,</span>
<span class='comment'>// we might actually have 2 blocks worth of data to process - the last user</span>
<span class='comment'>// supplied block (currently in in_scratch) and then another block that could</span>
<span class='comment'>// be added as padding. Processing proceeds by first processing the data in</span>
<span class='comment'>// in_scratch and writing it to out_scratch. Then, the now-empty in_scratch</span>
<span class='comment'>// buffer is passed to pad_input() which may leave it empty or write a block</span>
<span class='comment'>// of padding to it. If no padding is added, processing proceeds as in cases</span>
<span class='comment'>// #1 and #2. However, if padding is added, now have data in in_scratch and</span>
<span class='comment'>// also in out_scratch meaning that we can't immediately process the padding</span>
<span class='comment'>// data since we have nowhere to put it. So, we transition to the LastInput2</span>
<span class='comment'>// state which will first write out the last non-padding block, then process</span>
<span class='comment'>// the padding block (in in_scratch) and write it to the now-empty</span>
<span class='comment'>// out_scratch.</span>
<span class='kw'>if</span> <span class='op'>!</span><span class='self'>self</span>.<span class='ident'>in_scratch</span>.<span class='ident'>is_full</span>() {
<span class='self'>self</span>.<span class='ident'>padding</span>.<span class='ident'>pad_input</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>.<span class='ident'>in_scratch</span>);
<span class='kw'>if</span> <span class='self'>self</span>.<span class='ident'>in_scratch</span>.<span class='ident'>is_full</span>() {
<span class='ident'>process_scratch</span>(<span class='self'>self</span>);
<span class='kw'>if</span> <span class='self'>self</span>.<span class='ident'>padding</span>.<span class='ident'>strip_output</span>(<span class='self'>self</span>.<span class='ident'>out_read_scratch</span>.<span class='ident'>as_mut</span>().<span class='ident'>unwrap</span>()) {
<span class='self'>self</span>.<span class='ident'>state</span> <span class='op'>=</span> <span class='ident'>BlockEngineState</span>::<span class='ident'>Finished</span>;
} <span class='kw'>else</span> {
<span class='self'>self</span>.<span class='ident'>state</span> <span class='op'>=</span> <span class='ident'>BlockEngineState</span>::<span class='ident'>Error</span>(<span class='ident'>InvalidPadding</span>);
}
} <span class='kw'>else</span> <span class='kw'>if</span> <span class='self'>self</span>.<span class='ident'>in_scratch</span>.<span class='ident'>is_empty</span>() {
<span class='self'>self</span>.<span class='ident'>state</span> <span class='op'>=</span> <span class='ident'>BlockEngineState</span>::<span class='ident'>Finished</span>;
} <span class='kw'>else</span> {
<span class='self'>self</span>.<span class='ident'>state</span> <span class='op'>=</span> <span class='ident'>BlockEngineState</span>::<span class='ident'>Error</span>(<span class='ident'>InvalidLength</span>);
}
} <span class='kw'>else</span> {
<span class='ident'>process_scratch</span>(<span class='self'>self</span>);
<span class='self'>self</span>.<span class='ident'>padding</span>.<span class='ident'>pad_input</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>.<span class='ident'>in_scratch</span>);
<span class='kw'>if</span> <span class='self'>self</span>.<span class='ident'>in_scratch</span>.<span class='ident'>is_full</span>() {
<span class='self'>self</span>.<span class='ident'>state</span> <span class='op'>=</span> <span class='ident'>BlockEngineState</span>::<span class='ident'>LastInput2</span>;
} <span class='kw'>else</span> <span class='kw'>if</span> <span class='self'>self</span>.<span class='ident'>in_scratch</span>.<span class='ident'>is_empty</span>() {
<span class='kw'>if</span> <span class='self'>self</span>.<span class='ident'>padding</span>.<span class='ident'>strip_output</span>(<span class='self'>self</span>.<span class='ident'>out_read_scratch</span>.<span class='ident'>as_mut</span>().<span class='ident'>unwrap</span>()) {
<span class='self'>self</span>.<span class='ident'>state</span> <span class='op'>=</span> <span class='ident'>BlockEngineState</span>::<span class='ident'>Finished</span>;
} <span class='kw'>else</span> {
<span class='self'>self</span>.<span class='ident'>state</span> <span class='op'>=</span> <span class='ident'>BlockEngineState</span>::<span class='ident'>Error</span>(<span class='ident'>InvalidPadding</span>);
}
} <span class='kw'>else</span> {
<span class='self'>self</span>.<span class='ident'>state</span> <span class='op'>=</span> <span class='ident'>BlockEngineState</span>::<span class='ident'>Error</span>(<span class='ident'>InvalidLength</span>);
}
}
}
<span class='comment'>// See the comments on LastInput for more details. This state handles final blocks</span>
<span class='comment'>// of data in the case that the input was a multiple of the block size and the mode</span>
<span class='comment'>// decided to add a full extra block of padding.</span>
<span class='ident'>BlockEngineState</span>::<span class='ident'>LastInput2</span> <span class='op'>=></span> {
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>rout</span> <span class='op'>=</span> <span class='self'>self</span>.<span class='ident'>out_read_scratch</span>.<span class='ident'>take</span>().<span class='ident'>unwrap</span>();
<span class='ident'>rout</span>.<span class='ident'>push_to</span>(<span class='ident'>output</span>);
<span class='kw'>if</span> <span class='ident'>rout</span>.<span class='ident'>is_empty</span>() {
<span class='self'>self</span>.<span class='ident'>out_write_scratch</span> <span class='op'>=</span> <span class='prelude-val'>Some</span>(<span class='ident'>rout</span>.<span class='ident'>into_write_buffer</span>());
<span class='ident'>process_scratch</span>(<span class='self'>self</span>);
<span class='kw'>if</span> <span class='self'>self</span>.<span class='ident'>padding</span>.<span class='ident'>strip_output</span>(<span class='self'>self</span>.<span class='ident'>out_read_scratch</span>.<span class='ident'>as_mut</span>().<span class='ident'>unwrap</span>()) {
<span class='self'>self</span>.<span class='ident'>state</span> <span class='op'>=</span> <span class='ident'>BlockEngineState</span>::<span class='ident'>Finished</span>;
} <span class='kw'>else</span> {
<span class='self'>self</span>.<span class='ident'>state</span> <span class='op'>=</span> <span class='ident'>BlockEngineState</span>::<span class='ident'>Error</span>(<span class='ident'>InvalidPadding</span>);
}
} <span class='kw'>else</span> {
<span class='self'>self</span>.<span class='ident'>out_read_scratch</span> <span class='op'>=</span> <span class='prelude-val'>Some</span>(<span class='ident'>rout</span>);
<span class='kw'>return</span> <span class='prelude-val'>Ok</span>(<span class='ident'>BufferOverflow</span>);
}
}
<span class='comment'>// The Finished mode just writes the data in out_scratch to the output until there</span>
<span class='comment'>// is no more data left.</span>
<span class='ident'>BlockEngineState</span>::<span class='ident'>Finished</span> <span class='op'>=></span> {
<span class='kw'>match</span> <span class='self'>self</span>.<span class='ident'>out_read_scratch</span> {
<span class='prelude-val'>Some</span>(<span class='kw-2'>ref</span> <span class='kw-2'>mut</span> <span class='ident'>rout</span>) <span class='op'>=></span> {
<span class='ident'>rout</span>.<span class='ident'>push_to</span>(<span class='ident'>output</span>);
<span class='kw'>if</span> <span class='ident'>rout</span>.<span class='ident'>is_empty</span>() {
<span class='kw'>return</span> <span class='prelude-val'>Ok</span>(<span class='ident'>BufferUnderflow</span>);
} <span class='kw'>else</span> {
<span class='kw'>return</span> <span class='prelude-val'>Ok</span>(<span class='ident'>BufferOverflow</span>);
}
}
<span class='prelude-val'>None</span> <span class='op'>=></span> { <span class='kw'>return</span> <span class='prelude-val'>Ok</span>(<span class='ident'>BufferUnderflow</span>); }
}
}
<span class='comment'>// The Error state is used to store error information.</span>
<span class='ident'>BlockEngineState</span>::<span class='ident'>Error</span>(<span class='ident'>err</span>) <span class='op'>=></span> {
<span class='kw'>return</span> <span class='prelude-val'>Err</span>(<span class='ident'>err</span>);
}
}
}
}
<span class='kw'>fn</span> <span class='ident'>reset</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>) {
<span class='self'>self</span>.<span class='ident'>state</span> <span class='op'>=</span> <span class='ident'>BlockEngineState</span>::<span class='ident'>FastMode</span>;
<span class='self'>self</span>.<span class='ident'>in_scratch</span>.<span class='ident'>reset</span>();
<span class='kw'>if</span> <span class='self'>self</span>.<span class='ident'>out_read_scratch</span>.<span class='ident'>is_some</span>() {
<span class='kw'>let</span> <span class='ident'>ors</span> <span class='op'>=</span> <span class='self'>self</span>.<span class='ident'>out_read_scratch</span>.<span class='ident'>take</span>().<span class='ident'>unwrap</span>();
<span class='kw'>let</span> <span class='ident'>ows</span> <span class='op'>=</span> <span class='ident'>ors</span>.<span class='ident'>into_write_buffer</span>();
<span class='self'>self</span>.<span class='ident'>out_write_scratch</span> <span class='op'>=</span> <span class='prelude-val'>Some</span>(<span class='ident'>ows</span>);
} <span class='kw'>else</span> {
<span class='self'>self</span>.<span class='ident'>out_write_scratch</span>.<span class='ident'>as_mut</span>().<span class='ident'>unwrap</span>().<span class='ident'>reset</span>();
}
}
<span class='kw'>fn</span> <span class='ident'>reset_with_history</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='ident'>in_hist</span>: <span class='kw-2'>&</span>[<span class='ident'>u8</span>], <span class='ident'>out_hist</span>: <span class='kw-2'>&</span>[<span class='ident'>u8</span>]) {
<span class='self'>self</span>.<span class='ident'>reset</span>();
<span class='ident'>cryptoutil</span>::<span class='ident'>copy_memory</span>(<span class='ident'>in_hist</span>, <span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>.<span class='ident'>in_hist</span>);
<span class='ident'>cryptoutil</span>::<span class='ident'>copy_memory</span>(<span class='ident'>out_hist</span>, <span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>.<span class='ident'>out_hist</span>);
}
}
<span class='doccomment'>/// No padding mode for ECB and CBC encryption</span>
<span class='attribute'>#[<span class='ident'>derive</span>(<span class='ident'>Clone</span>, <span class='ident'>Copy</span>)]</span>
<span class='kw'>pub</span> <span class='kw'>struct</span> <span class='ident'>NoPadding</span>;
<span class='kw'>impl</span> <span class='ident'>PaddingProcessor</span> <span class='kw'>for</span> <span class='ident'>NoPadding</span> {
<span class='kw'>fn</span> <span class='ident'>pad_input</span><span class='op'><</span><span class='ident'>W</span>: <span class='ident'>WriteBuffer</span><span class='op'>></span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>, _: <span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>W</span>) { }
<span class='kw'>fn</span> <span class='ident'>strip_output</span><span class='op'><</span><span class='ident'>R</span>: <span class='ident'>ReadBuffer</span><span class='op'>></span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>, _: <span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>R</span>) <span class='op'>-></span> <span class='ident'>bool</span> { <span class='bool-val'>true</span> }
}
<span class='doccomment'>/// PKCS padding mode for ECB and CBC encryption</span>
<span class='attribute'>#[<span class='ident'>derive</span>(<span class='ident'>Clone</span>, <span class='ident'>Copy</span>)]</span>
<span class='kw'>pub</span> <span class='kw'>struct</span> <span class='ident'>PkcsPadding</span>;
<span class='comment'>// This class implements both encryption padding, where padding is added, and decryption padding,</span>
<span class='comment'>// where padding is stripped. Since BlockEngine doesn't know if its an Encryption or Decryption</span>
<span class='comment'>// operation, it will call both methods if given a chance. So, this class can't be passed directly</span>
<span class='comment'>// to BlockEngine. Instead, it must be wrapped with EncPadding or DecPadding which will ensure that</span>
<span class='comment'>// only the propper methods are called. The client of the library, however, doesn't have to</span>
<span class='comment'>// distinguish encryption padding handling from decryption padding handline, which is the whole</span>
<span class='comment'>// point.</span>
<span class='kw'>impl</span> <span class='ident'>PaddingProcessor</span> <span class='kw'>for</span> <span class='ident'>PkcsPadding</span> {
<span class='kw'>fn</span> <span class='ident'>pad_input</span><span class='op'><</span><span class='ident'>W</span>: <span class='ident'>WriteBuffer</span><span class='op'>></span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='ident'>input_buffer</span>: <span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>W</span>) {
<span class='kw'>let</span> <span class='ident'>rem</span> <span class='op'>=</span> <span class='ident'>input_buffer</span>.<span class='ident'>remaining</span>();
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>rem</span> <span class='op'>!=</span> <span class='number'>0</span> <span class='op'>&&</span> <span class='ident'>rem</span> <span class='op'><=</span> <span class='number'>255</span>);
<span class='kw'>for</span> <span class='ident'>v</span> <span class='kw'>in</span> <span class='ident'>input_buffer</span>.<span class='ident'>take_remaining</span>().<span class='ident'>iter_mut</span>() {
<span class='kw-2'>*</span><span class='ident'>v</span> <span class='op'>=</span> <span class='ident'>rem</span> <span class='kw'>as</span> <span class='ident'>u8</span>;
}
}
<span class='kw'>fn</span> <span class='ident'>strip_output</span><span class='op'><</span><span class='ident'>R</span>: <span class='ident'>ReadBuffer</span><span class='op'>></span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='ident'>output_buffer</span>: <span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>R</span>) <span class='op'>-></span> <span class='ident'>bool</span> {
<span class='kw'>let</span> <span class='ident'>last_byte</span>: <span class='ident'>u8</span>;
{
<span class='kw'>let</span> <span class='ident'>data</span> <span class='op'>=</span> <span class='ident'>output_buffer</span>.<span class='ident'>peek_remaining</span>();
<span class='ident'>last_byte</span> <span class='op'>=</span> <span class='kw-2'>*</span><span class='ident'>data</span>.<span class='ident'>last</span>().<span class='ident'>unwrap</span>();
<span class='kw'>for</span> <span class='kw-2'>&</span><span class='ident'>x</span> <span class='kw'>in</span> <span class='ident'>data</span>.<span class='ident'>iter</span>().<span class='ident'>rev</span>().<span class='ident'>take</span>(<span class='ident'>last_byte</span> <span class='kw'>as</span> <span class='ident'>usize</span>) {
<span class='kw'>if</span> <span class='ident'>x</span> <span class='op'>!=</span> <span class='ident'>last_byte</span> {
<span class='kw'>return</span> <span class='bool-val'>false</span>;
}
}
}
<span class='ident'>output_buffer</span>.<span class='ident'>truncate</span>(<span class='ident'>last_byte</span> <span class='kw'>as</span> <span class='ident'>usize</span>);
<span class='bool-val'>true</span>
}
}
<span class='doccomment'>/// Wraps a PaddingProcessor so that only pad_input() will actually be called.</span>
<span class='kw'>pub</span> <span class='kw'>struct</span> <span class='ident'>EncPadding</span><span class='op'><</span><span class='ident'>X</span><span class='op'>></span> {
<span class='ident'>padding</span>: <span class='ident'>X</span>
}
<span class='kw'>impl</span> <span class='op'><</span><span class='ident'>X</span>: <span class='ident'>PaddingProcessor</span><span class='op'>></span> <span class='ident'>EncPadding</span><span class='op'><</span><span class='ident'>X</span><span class='op'>></span> {
<span class='kw'>fn</span> <span class='ident'>wrap</span>(<span class='ident'>p</span>: <span class='ident'>X</span>) <span class='op'>-></span> <span class='ident'>EncPadding</span><span class='op'><</span><span class='ident'>X</span><span class='op'>></span> { <span class='ident'>EncPadding</span> { <span class='ident'>padding</span>: <span class='ident'>p</span> } }
}
<span class='kw'>impl</span> <span class='op'><</span><span class='ident'>X</span>: <span class='ident'>PaddingProcessor</span><span class='op'>></span> <span class='ident'>PaddingProcessor</span> <span class='kw'>for</span> <span class='ident'>EncPadding</span><span class='op'><</span><span class='ident'>X</span><span class='op'>></span> {
<span class='kw'>fn</span> <span class='ident'>pad_input</span><span class='op'><</span><span class='ident'>W</span>: <span class='ident'>WriteBuffer</span><span class='op'>></span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='ident'>a</span>: <span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>W</span>) { <span class='self'>self</span>.<span class='ident'>padding</span>.<span class='ident'>pad_input</span>(<span class='ident'>a</span>); }
<span class='kw'>fn</span> <span class='ident'>strip_output</span><span class='op'><</span><span class='ident'>R</span>: <span class='ident'>ReadBuffer</span><span class='op'>></span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>, _: <span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>R</span>) <span class='op'>-></span> <span class='ident'>bool</span> { <span class='bool-val'>true</span> }
}
<span class='doccomment'>/// Wraps a PaddingProcessor so that only strip_output() will actually be called.</span>
<span class='kw'>pub</span> <span class='kw'>struct</span> <span class='ident'>DecPadding</span><span class='op'><</span><span class='ident'>X</span><span class='op'>></span> {
<span class='ident'>padding</span>: <span class='ident'>X</span>
}
<span class='kw'>impl</span> <span class='op'><</span><span class='ident'>X</span>: <span class='ident'>PaddingProcessor</span><span class='op'>></span> <span class='ident'>DecPadding</span><span class='op'><</span><span class='ident'>X</span><span class='op'>></span> {
<span class='kw'>fn</span> <span class='ident'>wrap</span>(<span class='ident'>p</span>: <span class='ident'>X</span>) <span class='op'>-></span> <span class='ident'>DecPadding</span><span class='op'><</span><span class='ident'>X</span><span class='op'>></span> { <span class='ident'>DecPadding</span> { <span class='ident'>padding</span>: <span class='ident'>p</span> } }
}
<span class='kw'>impl</span> <span class='op'><</span><span class='ident'>X</span>: <span class='ident'>PaddingProcessor</span><span class='op'>></span> <span class='ident'>PaddingProcessor</span> <span class='kw'>for</span> <span class='ident'>DecPadding</span><span class='op'><</span><span class='ident'>X</span><span class='op'>></span> {
<span class='kw'>fn</span> <span class='ident'>pad_input</span><span class='op'><</span><span class='ident'>W</span>: <span class='ident'>WriteBuffer</span><span class='op'>></span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>, _: <span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>W</span>) { }
<span class='kw'>fn</span> <span class='ident'>strip_output</span><span class='op'><</span><span class='ident'>R</span>: <span class='ident'>ReadBuffer</span><span class='op'>></span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='ident'>a</span>: <span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>R</span>) <span class='op'>-></span> <span class='ident'>bool</span> { <span class='self'>self</span>.<span class='ident'>padding</span>.<span class='ident'>strip_output</span>(<span class='ident'>a</span>) }
}
<span class='kw'>struct</span> <span class='ident'>EcbEncryptorProcessor</span><span class='op'><</span><span class='ident'>T</span><span class='op'>></span> {
<span class='ident'>algo</span>: <span class='ident'>T</span>
}
<span class='kw'>impl</span> <span class='op'><</span><span class='ident'>T</span>: <span class='ident'>BlockEncryptor</span><span class='op'>></span> <span class='ident'>BlockProcessor</span> <span class='kw'>for</span> <span class='ident'>EcbEncryptorProcessor</span><span class='op'><</span><span class='ident'>T</span><span class='op'>></span> {
<span class='kw'>fn</span> <span class='ident'>process_block</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>, _: <span class='kw-2'>&</span>[<span class='ident'>u8</span>], _: <span class='kw-2'>&</span>[<span class='ident'>u8</span>], <span class='ident'>input</span>: <span class='kw-2'>&</span>[<span class='ident'>u8</span>], <span class='ident'>output</span>: <span class='kw-2'>&</span><span class='kw-2'>mut</span> [<span class='ident'>u8</span>]) {
<span class='self'>self</span>.<span class='ident'>algo</span>.<span class='ident'>encrypt_block</span>(<span class='ident'>input</span>, <span class='ident'>output</span>);
}
}
<span class='doccomment'>/// ECB Encryption mode</span>
<span class='kw'>pub</span> <span class='kw'>struct</span> <span class='ident'>EcbEncryptor</span><span class='op'><</span><span class='ident'>T</span>, <span class='ident'>X</span><span class='op'>></span> {
<span class='ident'>block_engine</span>: <span class='ident'>BlockEngine</span><span class='op'><</span><span class='ident'>EcbEncryptorProcessor</span><span class='op'><</span><span class='ident'>T</span><span class='op'>></span>, <span class='ident'>X</span><span class='op'>></span>
}
<span class='kw'>impl</span> <span class='op'><</span><span class='ident'>T</span>: <span class='ident'>BlockEncryptor</span>, <span class='ident'>X</span>: <span class='ident'>PaddingProcessor</span><span class='op'>></span> <span class='ident'>EcbEncryptor</span><span class='op'><</span><span class='ident'>T</span>, <span class='ident'>X</span><span class='op'>></span> {
<span class='doccomment'>/// Create a new ECB encryption mode object</span>
<span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>new</span>(<span class='ident'>algo</span>: <span class='ident'>T</span>, <span class='ident'>padding</span>: <span class='ident'>X</span>) <span class='op'>-></span> <span class='ident'>EcbEncryptor</span><span class='op'><</span><span class='ident'>T</span>, <span class='ident'>EncPadding</span><span class='op'><</span><span class='ident'>X</span><span class='op'>>></span> {
<span class='kw'>let</span> <span class='ident'>block_size</span> <span class='op'>=</span> <span class='ident'>algo</span>.<span class='ident'>block_size</span>();
<span class='kw'>let</span> <span class='ident'>processor</span> <span class='op'>=</span> <span class='ident'>EcbEncryptorProcessor</span> {
<span class='ident'>algo</span>: <span class='ident'>algo</span>
};
<span class='ident'>EcbEncryptor</span> {
<span class='ident'>block_engine</span>: <span class='ident'>BlockEngine</span>::<span class='ident'>new</span>(<span class='ident'>processor</span>, <span class='ident'>EncPadding</span>::<span class='ident'>wrap</span>(<span class='ident'>padding</span>), <span class='ident'>block_size</span>)
}
}
<span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>reset</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>) {
<span class='self'>self</span>.<span class='ident'>block_engine</span>.<span class='ident'>reset</span>();
}
}
<span class='kw'>impl</span> <span class='op'><</span><span class='ident'>T</span>: <span class='ident'>BlockEncryptor</span>, <span class='ident'>X</span>: <span class='ident'>PaddingProcessor</span><span class='op'>></span> <span class='ident'>Encryptor</span> <span class='kw'>for</span> <span class='ident'>EcbEncryptor</span><span class='op'><</span><span class='ident'>T</span>, <span class='ident'>X</span><span class='op'>></span> {
<span class='kw'>fn</span> <span class='ident'>encrypt</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='ident'>input</span>: <span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>RefReadBuffer</span>, <span class='ident'>output</span>: <span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>RefWriteBuffer</span>, <span class='ident'>eof</span>: <span class='ident'>bool</span>)
<span class='op'>-></span> <span class='prelude-ty'>Result</span><span class='op'><</span><span class='ident'>BufferResult</span>, <span class='ident'>SymmetricCipherError</span><span class='op'>></span> {
<span class='self'>self</span>.<span class='ident'>block_engine</span>.<span class='ident'>process</span>(<span class='ident'>input</span>, <span class='ident'>output</span>, <span class='ident'>eof</span>)
}
}
<span class='kw'>struct</span> <span class='ident'>EcbDecryptorProcessor</span><span class='op'><</span><span class='ident'>T</span><span class='op'>></span> {
<span class='ident'>algo</span>: <span class='ident'>T</span>
}
<span class='kw'>impl</span> <span class='op'><</span><span class='ident'>T</span>: <span class='ident'>BlockDecryptor</span><span class='op'>></span> <span class='ident'>BlockProcessor</span> <span class='kw'>for</span> <span class='ident'>EcbDecryptorProcessor</span><span class='op'><</span><span class='ident'>T</span><span class='op'>></span> {
<span class='kw'>fn</span> <span class='ident'>process_block</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>, _: <span class='kw-2'>&</span>[<span class='ident'>u8</span>], _: <span class='kw-2'>&</span>[<span class='ident'>u8</span>], <span class='ident'>input</span>: <span class='kw-2'>&</span>[<span class='ident'>u8</span>], <span class='ident'>output</span>: <span class='kw-2'>&</span><span class='kw-2'>mut</span> [<span class='ident'>u8</span>]) {
<span class='self'>self</span>.<span class='ident'>algo</span>.<span class='ident'>decrypt_block</span>(<span class='ident'>input</span>, <span class='ident'>output</span>);
}
}
<span class='doccomment'>/// ECB Decryption mode</span>
<span class='kw'>pub</span> <span class='kw'>struct</span> <span class='ident'>EcbDecryptor</span><span class='op'><</span><span class='ident'>T</span>, <span class='ident'>X</span><span class='op'>></span> {
<span class='ident'>block_engine</span>: <span class='ident'>BlockEngine</span><span class='op'><</span><span class='ident'>EcbDecryptorProcessor</span><span class='op'><</span><span class='ident'>T</span><span class='op'>></span>, <span class='ident'>X</span><span class='op'>></span>
}
<span class='kw'>impl</span> <span class='op'><</span><span class='ident'>T</span>: <span class='ident'>BlockDecryptor</span>, <span class='ident'>X</span>: <span class='ident'>PaddingProcessor</span><span class='op'>></span> <span class='ident'>EcbDecryptor</span><span class='op'><</span><span class='ident'>T</span>, <span class='ident'>X</span><span class='op'>></span> {
<span class='doccomment'>/// Create a new ECB decryption mode object</span>
<span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>new</span>(<span class='ident'>algo</span>: <span class='ident'>T</span>, <span class='ident'>padding</span>: <span class='ident'>X</span>) <span class='op'>-></span> <span class='ident'>EcbDecryptor</span><span class='op'><</span><span class='ident'>T</span>, <span class='ident'>DecPadding</span><span class='op'><</span><span class='ident'>X</span><span class='op'>>></span> {
<span class='kw'>let</span> <span class='ident'>block_size</span> <span class='op'>=</span> <span class='ident'>algo</span>.<span class='ident'>block_size</span>();
<span class='kw'>let</span> <span class='ident'>processor</span> <span class='op'>=</span> <span class='ident'>EcbDecryptorProcessor</span> {
<span class='ident'>algo</span>: <span class='ident'>algo</span>
};
<span class='ident'>EcbDecryptor</span> {
<span class='ident'>block_engine</span>: <span class='ident'>BlockEngine</span>::<span class='ident'>new</span>(<span class='ident'>processor</span>, <span class='ident'>DecPadding</span>::<span class='ident'>wrap</span>(<span class='ident'>padding</span>), <span class='ident'>block_size</span>)
}
}
<span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>reset</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>) {
<span class='self'>self</span>.<span class='ident'>block_engine</span>.<span class='ident'>reset</span>();
}
}
<span class='kw'>impl</span> <span class='op'><</span><span class='ident'>T</span>: <span class='ident'>BlockDecryptor</span>, <span class='ident'>X</span>: <span class='ident'>PaddingProcessor</span><span class='op'>></span> <span class='ident'>Decryptor</span> <span class='kw'>for</span> <span class='ident'>EcbDecryptor</span><span class='op'><</span><span class='ident'>T</span>, <span class='ident'>X</span><span class='op'>></span> {
<span class='kw'>fn</span> <span class='ident'>decrypt</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='ident'>input</span>: <span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>RefReadBuffer</span>, <span class='ident'>output</span>: <span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>RefWriteBuffer</span>, <span class='ident'>eof</span>: <span class='ident'>bool</span>)
<span class='op'>-></span> <span class='prelude-ty'>Result</span><span class='op'><</span><span class='ident'>BufferResult</span>, <span class='ident'>SymmetricCipherError</span><span class='op'>></span> {
<span class='self'>self</span>.<span class='ident'>block_engine</span>.<span class='ident'>process</span>(<span class='ident'>input</span>, <span class='ident'>output</span>, <span class='ident'>eof</span>)
}
}
<span class='kw'>struct</span> <span class='ident'>CbcEncryptorProcessor</span><span class='op'><</span><span class='ident'>T</span><span class='op'>></span> {
<span class='ident'>algo</span>: <span class='ident'>T</span>,
<span class='ident'>temp</span>: <span class='ident'>Vec</span><span class='op'><</span><span class='ident'>u8</span><span class='op'>></span>
}
<span class='kw'>impl</span> <span class='op'><</span><span class='ident'>T</span>: <span class='ident'>BlockEncryptor</span><span class='op'>></span> <span class='ident'>BlockProcessor</span> <span class='kw'>for</span> <span class='ident'>CbcEncryptorProcessor</span><span class='op'><</span><span class='ident'>T</span><span class='op'>></span> {
<span class='kw'>fn</span> <span class='ident'>process_block</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>, _: <span class='kw-2'>&</span>[<span class='ident'>u8</span>], <span class='ident'>out_hist</span>: <span class='kw-2'>&</span>[<span class='ident'>u8</span>], <span class='ident'>input</span>: <span class='kw-2'>&</span>[<span class='ident'>u8</span>], <span class='ident'>output</span>: <span class='kw-2'>&</span><span class='kw-2'>mut</span> [<span class='ident'>u8</span>]) {
<span class='kw'>for</span> ((<span class='kw-2'>&</span><span class='ident'>x</span>, <span class='kw-2'>&</span><span class='ident'>y</span>), <span class='ident'>o</span>) <span class='kw'>in</span> <span class='ident'>input</span>.<span class='ident'>iter</span>().<span class='ident'>zip</span>(<span class='ident'>out_hist</span>.<span class='ident'>iter</span>()).<span class='ident'>zip</span>(<span class='self'>self</span>.<span class='ident'>temp</span>.<span class='ident'>iter_mut</span>()) {
<span class='kw-2'>*</span><span class='ident'>o</span> <span class='op'>=</span> <span class='ident'>x</span> <span class='op'>^</span> <span class='ident'>y</span>;
}
<span class='self'>self</span>.<span class='ident'>algo</span>.<span class='ident'>encrypt_block</span>(<span class='kw-2'>&</span><span class='self'>self</span>.<span class='ident'>temp</span>[..], <span class='ident'>output</span>);
}
}
<span class='doccomment'>/// CBC encryption mode</span>
<span class='kw'>pub</span> <span class='kw'>struct</span> <span class='ident'>CbcEncryptor</span><span class='op'><</span><span class='ident'>T</span>, <span class='ident'>X</span><span class='op'>></span> {
<span class='ident'>block_engine</span>: <span class='ident'>BlockEngine</span><span class='op'><</span><span class='ident'>CbcEncryptorProcessor</span><span class='op'><</span><span class='ident'>T</span><span class='op'>></span>, <span class='ident'>X</span><span class='op'>></span>
}
<span class='kw'>impl</span> <span class='op'><</span><span class='ident'>T</span>: <span class='ident'>BlockEncryptor</span>, <span class='ident'>X</span>: <span class='ident'>PaddingProcessor</span><span class='op'>></span> <span class='ident'>CbcEncryptor</span><span class='op'><</span><span class='ident'>T</span>, <span class='ident'>X</span><span class='op'>></span> {
<span class='doccomment'>/// Create a new CBC encryption mode object</span>
<span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>new</span>(<span class='ident'>algo</span>: <span class='ident'>T</span>, <span class='ident'>padding</span>: <span class='ident'>X</span>, <span class='ident'>iv</span>: <span class='ident'>Vec</span><span class='op'><</span><span class='ident'>u8</span><span class='op'>></span>) <span class='op'>-></span> <span class='ident'>CbcEncryptor</span><span class='op'><</span><span class='ident'>T</span>, <span class='ident'>EncPadding</span><span class='op'><</span><span class='ident'>X</span><span class='op'>>></span> {
<span class='kw'>let</span> <span class='ident'>block_size</span> <span class='op'>=</span> <span class='ident'>algo</span>.<span class='ident'>block_size</span>();
<span class='kw'>let</span> <span class='ident'>processor</span> <span class='op'>=</span> <span class='ident'>CbcEncryptorProcessor</span> {
<span class='ident'>algo</span>: <span class='ident'>algo</span>,
<span class='ident'>temp</span>: <span class='ident'>repeat</span>(<span class='number'>0</span>).<span class='ident'>take</span>(<span class='ident'>block_size</span>).<span class='ident'>collect</span>()
};
<span class='ident'>CbcEncryptor</span> {
<span class='ident'>block_engine</span>: <span class='ident'>BlockEngine</span>::<span class='ident'>new_with_history</span>(
<span class='ident'>processor</span>,
<span class='ident'>EncPadding</span>::<span class='ident'>wrap</span>(<span class='ident'>padding</span>),
<span class='ident'>block_size</span>,
<span class='ident'>Vec</span>::<span class='ident'>new</span>(),
<span class='ident'>iv</span>)
}
}
<span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>reset</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='ident'>iv</span>: <span class='kw-2'>&</span>[<span class='ident'>u8</span>]) {
<span class='self'>self</span>.<span class='ident'>block_engine</span>.<span class='ident'>reset_with_history</span>(<span class='kw-2'>&</span>[], <span class='ident'>iv</span>);
}
}
<span class='kw'>impl</span> <span class='op'><</span><span class='ident'>T</span>: <span class='ident'>BlockEncryptor</span>, <span class='ident'>X</span>: <span class='ident'>PaddingProcessor</span><span class='op'>></span> <span class='ident'>Encryptor</span> <span class='kw'>for</span> <span class='ident'>CbcEncryptor</span><span class='op'><</span><span class='ident'>T</span>, <span class='ident'>X</span><span class='op'>></span> {
<span class='kw'>fn</span> <span class='ident'>encrypt</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='ident'>input</span>: <span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>RefReadBuffer</span>, <span class='ident'>output</span>: <span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>RefWriteBuffer</span>, <span class='ident'>eof</span>: <span class='ident'>bool</span>)
<span class='op'>-></span> <span class='prelude-ty'>Result</span><span class='op'><</span><span class='ident'>BufferResult</span>, <span class='ident'>SymmetricCipherError</span><span class='op'>></span> {
<span class='self'>self</span>.<span class='ident'>block_engine</span>.<span class='ident'>process</span>(<span class='ident'>input</span>, <span class='ident'>output</span>, <span class='ident'>eof</span>)
}
}
<span class='kw'>struct</span> <span class='ident'>CbcDecryptorProcessor</span><span class='op'><</span><span class='ident'>T</span><span class='op'>></span> {
<span class='ident'>algo</span>: <span class='ident'>T</span>,
<span class='ident'>temp</span>: <span class='ident'>Vec</span><span class='op'><</span><span class='ident'>u8</span><span class='op'>></span>
}
<span class='kw'>impl</span> <span class='op'><</span><span class='ident'>T</span>: <span class='ident'>BlockDecryptor</span><span class='op'>></span> <span class='ident'>BlockProcessor</span> <span class='kw'>for</span> <span class='ident'>CbcDecryptorProcessor</span><span class='op'><</span><span class='ident'>T</span><span class='op'>></span> {
<span class='kw'>fn</span> <span class='ident'>process_block</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='ident'>in_hist</span>: <span class='kw-2'>&</span>[<span class='ident'>u8</span>], _: <span class='kw-2'>&</span>[<span class='ident'>u8</span>], <span class='ident'>input</span>: <span class='kw-2'>&</span>[<span class='ident'>u8</span>], <span class='ident'>output</span>: <span class='kw-2'>&</span><span class='kw-2'>mut</span> [<span class='ident'>u8</span>]) {
<span class='self'>self</span>.<span class='ident'>algo</span>.<span class='ident'>decrypt_block</span>(<span class='ident'>input</span>, <span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>.<span class='ident'>temp</span>);
<span class='kw'>for</span> ((<span class='kw-2'>&</span><span class='ident'>x</span>, <span class='kw-2'>&</span><span class='ident'>y</span>), <span class='ident'>o</span>) <span class='kw'>in</span> <span class='self'>self</span>.<span class='ident'>temp</span>.<span class='ident'>iter</span>().<span class='ident'>zip</span>(<span class='ident'>in_hist</span>.<span class='ident'>iter</span>()).<span class='ident'>zip</span>(<span class='ident'>output</span>.<span class='ident'>iter_mut</span>()) {
<span class='kw-2'>*</span><span class='ident'>o</span> <span class='op'>=</span> <span class='ident'>x</span> <span class='op'>^</span> <span class='ident'>y</span>;
}
}
}
<span class='doccomment'>/// CBC decryption mode</span>
<span class='kw'>pub</span> <span class='kw'>struct</span> <span class='ident'>CbcDecryptor</span><span class='op'><</span><span class='ident'>T</span>, <span class='ident'>X</span><span class='op'>></span> {
<span class='ident'>block_engine</span>: <span class='ident'>BlockEngine</span><span class='op'><</span><span class='ident'>CbcDecryptorProcessor</span><span class='op'><</span><span class='ident'>T</span><span class='op'>></span>, <span class='ident'>X</span><span class='op'>></span>
}
<span class='kw'>impl</span> <span class='op'><</span><span class='ident'>T</span>: <span class='ident'>BlockDecryptor</span>, <span class='ident'>X</span>: <span class='ident'>PaddingProcessor</span><span class='op'>></span> <span class='ident'>CbcDecryptor</span><span class='op'><</span><span class='ident'>T</span>, <span class='ident'>X</span><span class='op'>></span> {
<span class='doccomment'>/// Create a new CBC decryption mode object</span>
<span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>new</span>(<span class='ident'>algo</span>: <span class='ident'>T</span>, <span class='ident'>padding</span>: <span class='ident'>X</span>, <span class='ident'>iv</span>: <span class='ident'>Vec</span><span class='op'><</span><span class='ident'>u8</span><span class='op'>></span>) <span class='op'>-></span> <span class='ident'>CbcDecryptor</span><span class='op'><</span><span class='ident'>T</span>, <span class='ident'>DecPadding</span><span class='op'><</span><span class='ident'>X</span><span class='op'>>></span> {
<span class='kw'>let</span> <span class='ident'>block_size</span> <span class='op'>=</span> <span class='ident'>algo</span>.<span class='ident'>block_size</span>();
<span class='kw'>let</span> <span class='ident'>processor</span> <span class='op'>=</span> <span class='ident'>CbcDecryptorProcessor</span> {
<span class='ident'>algo</span>: <span class='ident'>algo</span>,
<span class='ident'>temp</span>: <span class='ident'>repeat</span>(<span class='number'>0</span>).<span class='ident'>take</span>(<span class='ident'>block_size</span>).<span class='ident'>collect</span>()
};
<span class='ident'>CbcDecryptor</span> {
<span class='ident'>block_engine</span>: <span class='ident'>BlockEngine</span>::<span class='ident'>new_with_history</span>(
<span class='ident'>processor</span>,
<span class='ident'>DecPadding</span>::<span class='ident'>wrap</span>(<span class='ident'>padding</span>),
<span class='ident'>block_size</span>,
<span class='ident'>iv</span>,
<span class='ident'>Vec</span>::<span class='ident'>new</span>())
}
}
<span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>reset</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='ident'>iv</span>: <span class='kw-2'>&</span>[<span class='ident'>u8</span>]) {
<span class='self'>self</span>.<span class='ident'>block_engine</span>.<span class='ident'>reset_with_history</span>(<span class='ident'>iv</span>, <span class='kw-2'>&</span>[]);
}
}
<span class='kw'>impl</span> <span class='op'><</span><span class='ident'>T</span>: <span class='ident'>BlockDecryptor</span>, <span class='ident'>X</span>: <span class='ident'>PaddingProcessor</span><span class='op'>></span> <span class='ident'>Decryptor</span> <span class='kw'>for</span> <span class='ident'>CbcDecryptor</span><span class='op'><</span><span class='ident'>T</span>, <span class='ident'>X</span><span class='op'>></span> {
<span class='kw'>fn</span> <span class='ident'>decrypt</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='ident'>input</span>: <span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>RefReadBuffer</span>, <span class='ident'>output</span>: <span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>RefWriteBuffer</span>, <span class='ident'>eof</span>: <span class='ident'>bool</span>)
<span class='op'>-></span> <span class='prelude-ty'>Result</span><span class='op'><</span><span class='ident'>BufferResult</span>, <span class='ident'>SymmetricCipherError</span><span class='op'>></span> {
<span class='self'>self</span>.<span class='ident'>block_engine</span>.<span class='ident'>process</span>(<span class='ident'>input</span>, <span class='ident'>output</span>, <span class='ident'>eof</span>)
}
}
<span class='kw'>fn</span> <span class='ident'>add_ctr</span>(<span class='ident'>ctr</span>: <span class='kw-2'>&</span><span class='kw-2'>mut</span> [<span class='ident'>u8</span>], <span class='kw-2'>mut</span> <span class='ident'>ammount</span>: <span class='ident'>u8</span>) {
<span class='kw'>for</span> <span class='ident'>i</span> <span class='kw'>in</span> <span class='ident'>ctr</span>.<span class='ident'>iter_mut</span>().<span class='ident'>rev</span>() {
<span class='kw'>let</span> <span class='ident'>prev</span> <span class='op'>=</span> <span class='kw-2'>*</span><span class='ident'>i</span>;
<span class='kw-2'>*</span><span class='ident'>i</span> <span class='op'>=</span> <span class='ident'>i</span>.<span class='ident'>wrapping_add</span>(<span class='ident'>ammount</span>);
<span class='kw'>if</span> <span class='kw-2'>*</span><span class='ident'>i</span> <span class='op'>>=</span> <span class='ident'>prev</span> {
<span class='kw'>break</span>;
}
<span class='ident'>ammount</span> <span class='op'>=</span> <span class='number'>1</span>;
}
}
<span class='doccomment'>/// CTR Mode</span>
<span class='kw'>pub</span> <span class='kw'>struct</span> <span class='ident'>CtrMode</span><span class='op'><</span><span class='ident'>A</span><span class='op'>></span> {
<span class='ident'>algo</span>: <span class='ident'>A</span>,
<span class='ident'>ctr</span>: <span class='ident'>Vec</span><span class='op'><</span><span class='ident'>u8</span><span class='op'>></span>,
<span class='ident'>bytes</span>: <span class='ident'>OwnedReadBuffer</span>
}
<span class='kw'>impl</span> <span class='op'><</span><span class='ident'>A</span>: <span class='ident'>BlockEncryptor</span><span class='op'>></span> <span class='ident'>CtrMode</span><span class='op'><</span><span class='ident'>A</span><span class='op'>></span> {
<span class='doccomment'>/// Create a new CTR object</span>
<span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>new</span>(<span class='ident'>algo</span>: <span class='ident'>A</span>, <span class='ident'>ctr</span>: <span class='ident'>Vec</span><span class='op'><</span><span class='ident'>u8</span><span class='op'>></span>) <span class='op'>-></span> <span class='ident'>CtrMode</span><span class='op'><</span><span class='ident'>A</span><span class='op'>></span> {
<span class='kw'>let</span> <span class='ident'>block_size</span> <span class='op'>=</span> <span class='ident'>algo</span>.<span class='ident'>block_size</span>();
<span class='ident'>CtrMode</span> {
<span class='ident'>algo</span>: <span class='ident'>algo</span>,
<span class='ident'>ctr</span>: <span class='ident'>ctr</span>,
<span class='ident'>bytes</span>: <span class='ident'>OwnedReadBuffer</span>::<span class='ident'>new_with_len</span>(<span class='ident'>repeat</span>(<span class='number'>0</span>).<span class='ident'>take</span>(<span class='ident'>block_size</span>).<span class='ident'>collect</span>(), <span class='number'>0</span>)
}
}
<span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>reset</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='ident'>ctr</span>: <span class='kw-2'>&</span>[<span class='ident'>u8</span>]) {
<span class='ident'>cryptoutil</span>::<span class='ident'>copy_memory</span>(<span class='ident'>ctr</span>, <span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>.<span class='ident'>ctr</span>);
<span class='self'>self</span>.<span class='ident'>bytes</span>.<span class='ident'>reset</span>();
}
<span class='kw'>fn</span> <span class='ident'>process</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='ident'>input</span>: <span class='kw-2'>&</span>[<span class='ident'>u8</span>], <span class='ident'>output</span>: <span class='kw-2'>&</span><span class='kw-2'>mut</span> [<span class='ident'>u8</span>]) {
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>input</span>.<span class='ident'>len</span>() <span class='op'>==</span> <span class='ident'>output</span>.<span class='ident'>len</span>());
<span class='kw'>let</span> <span class='ident'>len</span> <span class='op'>=</span> <span class='ident'>input</span>.<span class='ident'>len</span>();
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>i</span> <span class='op'>=</span> <span class='number'>0</span>;
<span class='kw'>while</span> <span class='ident'>i</span> <span class='op'><</span> <span class='ident'>len</span> {
<span class='kw'>if</span> <span class='self'>self</span>.<span class='ident'>bytes</span>.<span class='ident'>is_empty</span>() {
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>wb</span> <span class='op'>=</span> <span class='self'>self</span>.<span class='ident'>bytes</span>.<span class='ident'>borrow_write_buffer</span>();
<span class='self'>self</span>.<span class='ident'>algo</span>.<span class='ident'>encrypt_block</span>(<span class='kw-2'>&</span><span class='self'>self</span>.<span class='ident'>ctr</span>[..], <span class='ident'>wb</span>.<span class='ident'>take_remaining</span>());
<span class='ident'>add_ctr</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>.<span class='ident'>ctr</span>, <span class='number'>1</span>);
}
<span class='kw'>let</span> <span class='ident'>count</span> <span class='op'>=</span> <span class='ident'>cmp</span>::<span class='ident'>min</span>(<span class='self'>self</span>.<span class='ident'>bytes</span>.<span class='ident'>remaining</span>(), <span class='ident'>len</span> <span class='op'>-</span> <span class='ident'>i</span>);
<span class='kw'>let</span> <span class='ident'>bytes_it</span> <span class='op'>=</span> <span class='self'>self</span>.<span class='ident'>bytes</span>.<span class='ident'>take_next</span>(<span class='ident'>count</span>).<span class='ident'>iter</span>();
<span class='kw'>let</span> <span class='ident'>in_it</span> <span class='op'>=</span> <span class='ident'>input</span>[<span class='ident'>i</span>..].<span class='ident'>iter</span>();
<span class='kw'>let</span> <span class='ident'>out_it</span> <span class='op'>=</span> <span class='ident'>output</span>[<span class='ident'>i</span>..].<span class='ident'>iter_mut</span>();
<span class='kw'>for</span> ((<span class='kw-2'>&</span><span class='ident'>x</span>, <span class='kw-2'>&</span><span class='ident'>y</span>), <span class='ident'>o</span>) <span class='kw'>in</span> <span class='ident'>bytes_it</span>.<span class='ident'>zip</span>(<span class='ident'>in_it</span>).<span class='ident'>zip</span>(<span class='ident'>out_it</span>) {
<span class='kw-2'>*</span><span class='ident'>o</span> <span class='op'>=</span> <span class='ident'>x</span> <span class='op'>^</span> <span class='ident'>y</span>;
}
<span class='ident'>i</span> <span class='op'>+=</span> <span class='ident'>count</span>;
}
}
}
<span class='kw'>impl</span> <span class='op'><</span><span class='ident'>A</span>: <span class='ident'>BlockEncryptor</span><span class='op'>></span> <span class='ident'>SynchronousStreamCipher</span> <span class='kw'>for</span> <span class='ident'>CtrMode</span><span class='op'><</span><span class='ident'>A</span><span class='op'>></span> {
<span class='kw'>fn</span> <span class='ident'>process</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='ident'>input</span>: <span class='kw-2'>&</span>[<span class='ident'>u8</span>], <span class='ident'>output</span>: <span class='kw-2'>&</span><span class='kw-2'>mut</span> [<span class='ident'>u8</span>]) {
<span class='self'>self</span>.<span class='ident'>process</span>(<span class='ident'>input</span>, <span class='ident'>output</span>);
}
}
<span class='kw'>impl</span> <span class='op'><</span><span class='ident'>A</span>: <span class='ident'>BlockEncryptor</span><span class='op'>></span> <span class='ident'>Encryptor</span> <span class='kw'>for</span> <span class='ident'>CtrMode</span><span class='op'><</span><span class='ident'>A</span><span class='op'>></span> {
<span class='kw'>fn</span> <span class='ident'>encrypt</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='ident'>input</span>: <span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>RefReadBuffer</span>, <span class='ident'>output</span>: <span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>RefWriteBuffer</span>, _: <span class='ident'>bool</span>)
<span class='op'>-></span> <span class='prelude-ty'>Result</span><span class='op'><</span><span class='ident'>BufferResult</span>, <span class='ident'>SymmetricCipherError</span><span class='op'>></span> {
<span class='ident'>symm_enc_or_dec</span>(<span class='self'>self</span>, <span class='ident'>input</span>, <span class='ident'>output</span>)
}
}
<span class='kw'>impl</span> <span class='op'><</span><span class='ident'>A</span>: <span class='ident'>BlockEncryptor</span><span class='op'>></span> <span class='ident'>Decryptor</span> <span class='kw'>for</span> <span class='ident'>CtrMode</span><span class='op'><</span><span class='ident'>A</span><span class='op'>></span> {
<span class='kw'>fn</span> <span class='ident'>decrypt</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='ident'>input</span>: <span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>RefReadBuffer</span>, <span class='ident'>output</span>: <span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>RefWriteBuffer</span>, _: <span class='ident'>bool</span>)
<span class='op'>-></span> <span class='prelude-ty'>Result</span><span class='op'><</span><span class='ident'>BufferResult</span>, <span class='ident'>SymmetricCipherError</span><span class='op'>></span> {
<span class='ident'>symm_enc_or_dec</span>(<span class='self'>self</span>, <span class='ident'>input</span>, <span class='ident'>output</span>)
}
}
<span class='doccomment'>/// CTR Mode that operates on 8 blocks at a time</span>
<span class='kw'>pub</span> <span class='kw'>struct</span> <span class='ident'>CtrModeX8</span><span class='op'><</span><span class='ident'>A</span><span class='op'>></span> {
<span class='ident'>algo</span>: <span class='ident'>A</span>,
<span class='ident'>ctr_x8</span>: <span class='ident'>Vec</span><span class='op'><</span><span class='ident'>u8</span><span class='op'>></span>,
<span class='ident'>bytes</span>: <span class='ident'>OwnedReadBuffer</span>
}
<span class='kw'>fn</span> <span class='ident'>construct_ctr_x8</span>(<span class='ident'>in_ctr</span>: <span class='kw-2'>&</span>[<span class='ident'>u8</span>], <span class='ident'>out_ctr_x8</span>: <span class='kw-2'>&</span><span class='kw-2'>mut</span> [<span class='ident'>u8</span>]) {
<span class='kw'>for</span> (<span class='ident'>i</span>, <span class='ident'>ctr_i</span>) <span class='kw'>in</span> <span class='ident'>out_ctr_x8</span>.<span class='ident'>chunks_mut</span>(<span class='ident'>in_ctr</span>.<span class='ident'>len</span>()).<span class='ident'>enumerate</span>() {
<span class='ident'>cryptoutil</span>::<span class='ident'>copy_memory</span>(<span class='ident'>in_ctr</span>, <span class='ident'>ctr_i</span>);
<span class='ident'>add_ctr</span>(<span class='ident'>ctr_i</span>, <span class='ident'>i</span> <span class='kw'>as</span> <span class='ident'>u8</span>);
}
}
<span class='kw'>impl</span> <span class='op'><</span><span class='ident'>A</span>: <span class='ident'>BlockEncryptorX8</span><span class='op'>></span> <span class='ident'>CtrModeX8</span><span class='op'><</span><span class='ident'>A</span><span class='op'>></span> {
<span class='doccomment'>/// Create a new CTR object that operates on 8 blocks at a time</span>
<span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>new</span>(<span class='ident'>algo</span>: <span class='ident'>A</span>, <span class='ident'>ctr</span>: <span class='kw-2'>&</span>[<span class='ident'>u8</span>]) <span class='op'>-></span> <span class='ident'>CtrModeX8</span><span class='op'><</span><span class='ident'>A</span><span class='op'>></span> {
<span class='kw'>let</span> <span class='ident'>block_size</span> <span class='op'>=</span> <span class='ident'>algo</span>.<span class='ident'>block_size</span>();
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>ctr_x8</span>: <span class='ident'>Vec</span><span class='op'><</span><span class='ident'>u8</span><span class='op'>></span> <span class='op'>=</span> <span class='ident'>repeat</span>(<span class='number'>0</span>).<span class='ident'>take</span>(<span class='ident'>block_size</span> <span class='op'>*</span> <span class='number'>8</span>).<span class='ident'>collect</span>();
<span class='ident'>construct_ctr_x8</span>(<span class='ident'>ctr</span>, <span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>ctr_x8</span>);
<span class='ident'>CtrModeX8</span> {
<span class='ident'>algo</span>: <span class='ident'>algo</span>,
<span class='ident'>ctr_x8</span>: <span class='ident'>ctr_x8</span>,
<span class='ident'>bytes</span>: <span class='ident'>OwnedReadBuffer</span>::<span class='ident'>new_with_len</span>(<span class='ident'>repeat</span>(<span class='number'>0</span>).<span class='ident'>take</span>(<span class='ident'>block_size</span> <span class='op'>*</span> <span class='number'>8</span>).<span class='ident'>collect</span>(), <span class='number'>0</span>)
}
}
<span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>reset</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='ident'>ctr</span>: <span class='kw-2'>&</span>[<span class='ident'>u8</span>]) {
<span class='ident'>construct_ctr_x8</span>(<span class='ident'>ctr</span>, <span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>.<span class='ident'>ctr_x8</span>);
<span class='self'>self</span>.<span class='ident'>bytes</span>.<span class='ident'>reset</span>();
}
<span class='kw'>fn</span> <span class='ident'>process</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='ident'>input</span>: <span class='kw-2'>&</span>[<span class='ident'>u8</span>], <span class='ident'>output</span>: <span class='kw-2'>&</span><span class='kw-2'>mut</span> [<span class='ident'>u8</span>]) {
<span class='comment'>// TODO - Can some of this be combined with regular CtrMode?</span>
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>input</span>.<span class='ident'>len</span>() <span class='op'>==</span> <span class='ident'>output</span>.<span class='ident'>len</span>());
<span class='kw'>let</span> <span class='ident'>len</span> <span class='op'>=</span> <span class='ident'>input</span>.<span class='ident'>len</span>();
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>i</span> <span class='op'>=</span> <span class='number'>0</span>;
<span class='kw'>while</span> <span class='ident'>i</span> <span class='op'><</span> <span class='ident'>len</span> {
<span class='kw'>if</span> <span class='self'>self</span>.<span class='ident'>bytes</span>.<span class='ident'>is_empty</span>() {
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>wb</span> <span class='op'>=</span> <span class='self'>self</span>.<span class='ident'>bytes</span>.<span class='ident'>borrow_write_buffer</span>();
<span class='self'>self</span>.<span class='ident'>algo</span>.<span class='ident'>encrypt_block_x8</span>(<span class='kw-2'>&</span><span class='self'>self</span>.<span class='ident'>ctr_x8</span>[..], <span class='ident'>wb</span>.<span class='ident'>take_remaining</span>());
<span class='kw'>for</span> <span class='ident'>ctr_i</span> <span class='kw'>in</span> <span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>.<span class='ident'>ctr_x8</span>.<span class='ident'>chunks_mut</span>(<span class='self'>self</span>.<span class='ident'>algo</span>.<span class='ident'>block_size</span>()) {
<span class='ident'>add_ctr</span>(<span class='ident'>ctr_i</span>, <span class='number'>8</span>);
}
}
<span class='kw'>let</span> <span class='ident'>count</span> <span class='op'>=</span> <span class='ident'>cmp</span>::<span class='ident'>min</span>(<span class='self'>self</span>.<span class='ident'>bytes</span>.<span class='ident'>remaining</span>(), <span class='ident'>len</span> <span class='op'>-</span> <span class='ident'>i</span>);
<span class='kw'>let</span> <span class='ident'>bytes_it</span> <span class='op'>=</span> <span class='self'>self</span>.<span class='ident'>bytes</span>.<span class='ident'>take_next</span>(<span class='ident'>count</span>).<span class='ident'>iter</span>();
<span class='kw'>let</span> <span class='ident'>in_it</span> <span class='op'>=</span> <span class='ident'>input</span>[<span class='ident'>i</span>..].<span class='ident'>iter</span>();
<span class='kw'>let</span> <span class='ident'>out_it</span> <span class='op'>=</span> <span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>output</span>[<span class='ident'>i</span>..];
<span class='kw'>for</span> ((<span class='kw-2'>&</span><span class='ident'>x</span>, <span class='kw-2'>&</span><span class='ident'>y</span>), <span class='ident'>o</span>) <span class='kw'>in</span> <span class='ident'>bytes_it</span>.<span class='ident'>zip</span>(<span class='ident'>in_it</span>).<span class='ident'>zip</span>(<span class='ident'>out_it</span>.<span class='ident'>iter_mut</span>()) {
<span class='kw-2'>*</span><span class='ident'>o</span> <span class='op'>=</span> <span class='ident'>x</span> <span class='op'>^</span> <span class='ident'>y</span>;
}
<span class='ident'>i</span> <span class='op'>+=</span> <span class='ident'>count</span>;
}
}
}
<span class='kw'>impl</span> <span class='op'><</span><span class='ident'>A</span>: <span class='ident'>BlockEncryptorX8</span><span class='op'>></span> <span class='ident'>SynchronousStreamCipher</span> <span class='kw'>for</span> <span class='ident'>CtrModeX8</span><span class='op'><</span><span class='ident'>A</span><span class='op'>></span> {
<span class='kw'>fn</span> <span class='ident'>process</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='ident'>input</span>: <span class='kw-2'>&</span>[<span class='ident'>u8</span>], <span class='ident'>output</span>: <span class='kw-2'>&</span><span class='kw-2'>mut</span> [<span class='ident'>u8</span>]) {
<span class='self'>self</span>.<span class='ident'>process</span>(<span class='ident'>input</span>, <span class='ident'>output</span>);
}
}
<span class='kw'>impl</span> <span class='op'><</span><span class='ident'>A</span>: <span class='ident'>BlockEncryptorX8</span><span class='op'>></span> <span class='ident'>Encryptor</span> <span class='kw'>for</span> <span class='ident'>CtrModeX8</span><span class='op'><</span><span class='ident'>A</span><span class='op'>></span> {
<span class='kw'>fn</span> <span class='ident'>encrypt</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='ident'>input</span>: <span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>RefReadBuffer</span>, <span class='ident'>output</span>: <span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>RefWriteBuffer</span>, _: <span class='ident'>bool</span>)
<span class='op'>-></span> <span class='prelude-ty'>Result</span><span class='op'><</span><span class='ident'>BufferResult</span>, <span class='ident'>SymmetricCipherError</span><span class='op'>></span> {
<span class='ident'>symm_enc_or_dec</span>(<span class='self'>self</span>, <span class='ident'>input</span>, <span class='ident'>output</span>)
}
}
<span class='kw'>impl</span> <span class='op'><</span><span class='ident'>A</span>: <span class='ident'>BlockEncryptorX8</span><span class='op'>></span> <span class='ident'>Decryptor</span> <span class='kw'>for</span> <span class='ident'>CtrModeX8</span><span class='op'><</span><span class='ident'>A</span><span class='op'>></span> {
<span class='kw'>fn</span> <span class='ident'>decrypt</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='ident'>input</span>: <span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>RefReadBuffer</span>, <span class='ident'>output</span>: <span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>RefWriteBuffer</span>, _: <span class='ident'>bool</span>)
<span class='op'>-></span> <span class='prelude-ty'>Result</span><span class='op'><</span><span class='ident'>BufferResult</span>, <span class='ident'>SymmetricCipherError</span><span class='op'>></span> {
<span class='ident'>symm_enc_or_dec</span>(<span class='self'>self</span>, <span class='ident'>input</span>, <span class='ident'>output</span>)
}
}
<span class='attribute'>#[<span class='ident'>cfg</span>(<span class='ident'>test</span>)]</span>
<span class='kw'>mod</span> <span class='ident'>test</span> {
<span class='kw'>use</span> <span class='ident'>std</span>::<span class='ident'>iter</span>::<span class='ident'>repeat</span>;
<span class='kw'>use</span> <span class='ident'>aessafe</span>;
<span class='kw'>use</span> <span class='ident'>blockmodes</span>::{<span class='ident'>EcbEncryptor</span>, <span class='ident'>EcbDecryptor</span>, <span class='ident'>CbcEncryptor</span>, <span class='ident'>CbcDecryptor</span>, <span class='ident'>CtrMode</span>, <span class='ident'>CtrModeX8</span>,
<span class='ident'>NoPadding</span>, <span class='ident'>PkcsPadding</span>};
<span class='kw'>use</span> <span class='ident'>buffer</span>::{<span class='ident'>ReadBuffer</span>, <span class='ident'>WriteBuffer</span>, <span class='ident'>RefReadBuffer</span>, <span class='ident'>RefWriteBuffer</span>, <span class='ident'>BufferResult</span>};
<span class='kw'>use</span> <span class='ident'>buffer</span>::<span class='ident'>BufferResult</span>::{<span class='ident'>BufferUnderflow</span>, <span class='ident'>BufferOverflow</span>};
<span class='kw'>use</span> <span class='ident'>symmetriccipher</span>::{<span class='ident'>Encryptor</span>, <span class='ident'>Decryptor</span>};
<span class='kw'>use</span> <span class='ident'>symmetriccipher</span>::<span class='ident'>SymmetricCipherError</span>::{<span class='self'>self</span>, <span class='ident'>InvalidLength</span>, <span class='ident'>InvalidPadding</span>};
<span class='kw'>use</span> <span class='ident'>std</span>::<span class='ident'>cmp</span>;
<span class='kw'>trait</span> <span class='ident'>CipherTest</span> {
<span class='kw'>fn</span> <span class='ident'>get_plain</span><span class='op'><</span><span class='lifetime'>'a</span><span class='op'>></span>(<span class='kw-2'>&</span><span class='lifetime'>'a</span> <span class='self'>self</span>) <span class='op'>-></span> <span class='kw-2'>&</span><span class='lifetime'>'a</span> [<span class='ident'>u8</span>];
<span class='kw'>fn</span> <span class='ident'>get_cipher</span><span class='op'><</span><span class='lifetime'>'a</span><span class='op'>></span>(<span class='kw-2'>&</span><span class='lifetime'>'a</span> <span class='self'>self</span>) <span class='op'>-></span> <span class='kw-2'>&</span><span class='lifetime'>'a</span> [<span class='ident'>u8</span>];
}
<span class='kw'>struct</span> <span class='ident'>EcbTest</span> {
<span class='ident'>key</span>: <span class='ident'>Vec</span><span class='op'><</span><span class='ident'>u8</span><span class='op'>></span>,
<span class='ident'>plain</span>: <span class='ident'>Vec</span><span class='op'><</span><span class='ident'>u8</span><span class='op'>></span>,
<span class='ident'>cipher</span>: <span class='ident'>Vec</span><span class='op'><</span><span class='ident'>u8</span><span class='op'>></span>
}
<span class='kw'>impl</span> <span class='ident'>CipherTest</span> <span class='kw'>for</span> <span class='ident'>EcbTest</span> {
<span class='kw'>fn</span> <span class='ident'>get_plain</span><span class='op'><</span><span class='lifetime'>'a</span><span class='op'>></span>(<span class='kw-2'>&</span><span class='lifetime'>'a</span> <span class='self'>self</span>) <span class='op'>-></span> <span class='kw-2'>&</span><span class='lifetime'>'a</span> [<span class='ident'>u8</span>] {
<span class='kw-2'>&</span><span class='self'>self</span>.<span class='ident'>plain</span>[..]
}
<span class='kw'>fn</span> <span class='ident'>get_cipher</span><span class='op'><</span><span class='lifetime'>'a</span><span class='op'>></span>(<span class='kw-2'>&</span><span class='lifetime'>'a</span> <span class='self'>self</span>) <span class='op'>-></span> <span class='kw-2'>&</span><span class='lifetime'>'a</span> [<span class='ident'>u8</span>] {
<span class='kw-2'>&</span><span class='self'>self</span>.<span class='ident'>cipher</span>[..]
}
}
<span class='kw'>struct</span> <span class='ident'>CbcTest</span> {
<span class='ident'>key</span>: <span class='ident'>Vec</span><span class='op'><</span><span class='ident'>u8</span><span class='op'>></span>,
<span class='ident'>iv</span>: <span class='ident'>Vec</span><span class='op'><</span><span class='ident'>u8</span><span class='op'>></span>,
<span class='ident'>plain</span>: <span class='ident'>Vec</span><span class='op'><</span><span class='ident'>u8</span><span class='op'>></span>,
<span class='ident'>cipher</span>: <span class='ident'>Vec</span><span class='op'><</span><span class='ident'>u8</span><span class='op'>></span>
}
<span class='kw'>impl</span> <span class='ident'>CipherTest</span> <span class='kw'>for</span> <span class='ident'>CbcTest</span> {
<span class='kw'>fn</span> <span class='ident'>get_plain</span><span class='op'><</span><span class='lifetime'>'a</span><span class='op'>></span>(<span class='kw-2'>&</span><span class='lifetime'>'a</span> <span class='self'>self</span>) <span class='op'>-></span> <span class='kw-2'>&</span><span class='lifetime'>'a</span> [<span class='ident'>u8</span>] {
<span class='kw-2'>&</span><span class='self'>self</span>.<span class='ident'>plain</span>[..]
}
<span class='kw'>fn</span> <span class='ident'>get_cipher</span><span class='op'><</span><span class='lifetime'>'a</span><span class='op'>></span>(<span class='kw-2'>&</span><span class='lifetime'>'a</span> <span class='self'>self</span>) <span class='op'>-></span> <span class='kw-2'>&</span><span class='lifetime'>'a</span> [<span class='ident'>u8</span>] {
<span class='kw-2'>&</span><span class='self'>self</span>.<span class='ident'>cipher</span>[..]
}
}
<span class='kw'>struct</span> <span class='ident'>CtrTest</span> {
<span class='ident'>key</span>: <span class='ident'>Vec</span><span class='op'><</span><span class='ident'>u8</span><span class='op'>></span>,
<span class='ident'>ctr</span>: <span class='ident'>Vec</span><span class='op'><</span><span class='ident'>u8</span><span class='op'>></span>,
<span class='ident'>plain</span>: <span class='ident'>Vec</span><span class='op'><</span><span class='ident'>u8</span><span class='op'>></span>,
<span class='ident'>cipher</span>: <span class='ident'>Vec</span><span class='op'><</span><span class='ident'>u8</span><span class='op'>></span>
}
<span class='kw'>impl</span> <span class='ident'>CipherTest</span> <span class='kw'>for</span> <span class='ident'>CtrTest</span> {
<span class='kw'>fn</span> <span class='ident'>get_plain</span><span class='op'><</span><span class='lifetime'>'a</span><span class='op'>></span>(<span class='kw-2'>&</span><span class='lifetime'>'a</span> <span class='self'>self</span>) <span class='op'>-></span> <span class='kw-2'>&</span><span class='lifetime'>'a</span> [<span class='ident'>u8</span>] {
<span class='kw-2'>&</span><span class='self'>self</span>.<span class='ident'>plain</span>[..]
}
<span class='kw'>fn</span> <span class='ident'>get_cipher</span><span class='op'><</span><span class='lifetime'>'a</span><span class='op'>></span>(<span class='kw-2'>&</span><span class='lifetime'>'a</span> <span class='self'>self</span>) <span class='op'>-></span> <span class='kw-2'>&</span><span class='lifetime'>'a</span> [<span class='ident'>u8</span>] {
<span class='kw-2'>&</span><span class='self'>self</span>.<span class='ident'>cipher</span>[..]
}
}
<span class='kw'>fn</span> <span class='ident'>aes_ecb_no_padding_tests</span>() <span class='op'>-></span> <span class='ident'>Vec</span><span class='op'><</span><span class='ident'>EcbTest</span><span class='op'>></span> {
<span class='macro'>vec</span><span class='macro'>!</span>[
<span class='ident'>EcbTest</span> {
<span class='ident'>key</span>: <span class='ident'>repeat</span>(<span class='number'>0</span>).<span class='ident'>take</span>(<span class='number'>16</span>).<span class='ident'>collect</span>(),
<span class='ident'>plain</span>: <span class='ident'>repeat</span>(<span class='number'>0</span>).<span class='ident'>take</span>(<span class='number'>32</span>).<span class='ident'>collect</span>(),
<span class='ident'>cipher</span>: <span class='macro'>vec</span><span class='macro'>!</span>[
<span class='number'>0x66</span>, <span class='number'>0xe9</span>, <span class='number'>0x4b</span>, <span class='number'>0xd4</span>, <span class='number'>0xef</span>, <span class='number'>0x8a</span>, <span class='number'>0x2c</span>, <span class='number'>0x3b</span>,
<span class='number'>0x88</span>, <span class='number'>0x4c</span>, <span class='number'>0xfa</span>, <span class='number'>0x59</span>, <span class='number'>0xca</span>, <span class='number'>0x34</span>, <span class='number'>0x2b</span>, <span class='number'>0x2e</span>,
<span class='number'>0x66</span>, <span class='number'>0xe9</span>, <span class='number'>0x4b</span>, <span class='number'>0xd4</span>, <span class='number'>0xef</span>, <span class='number'>0x8a</span>, <span class='number'>0x2c</span>, <span class='number'>0x3b</span>,
<span class='number'>0x88</span>, <span class='number'>0x4c</span>, <span class='number'>0xfa</span>, <span class='number'>0x59</span>, <span class='number'>0xca</span>, <span class='number'>0x34</span>, <span class='number'>0x2b</span>, <span class='number'>0x2e</span> ]
}
]
}
<span class='kw'>fn</span> <span class='ident'>aes_ecb_pkcs_padding_tests</span>() <span class='op'>-></span> <span class='ident'>Vec</span><span class='op'><</span><span class='ident'>EcbTest</span><span class='op'>></span> {
<span class='macro'>vec</span><span class='macro'>!</span>[
<span class='ident'>EcbTest</span> {
<span class='ident'>key</span>: <span class='ident'>repeat</span>(<span class='number'>0</span>).<span class='ident'>take</span>(<span class='number'>16</span>).<span class='ident'>collect</span>(),
<span class='ident'>plain</span>: <span class='ident'>repeat</span>(<span class='number'>0</span>).<span class='ident'>take</span>(<span class='number'>32</span>).<span class='ident'>collect</span>(),
<span class='ident'>cipher</span>: <span class='macro'>vec</span><span class='macro'>!</span>[
<span class='number'>0x66</span>, <span class='number'>0xe9</span>, <span class='number'>0x4b</span>, <span class='number'>0xd4</span>, <span class='number'>0xef</span>, <span class='number'>0x8a</span>, <span class='number'>0x2c</span>, <span class='number'>0x3b</span>,
<span class='number'>0x88</span>, <span class='number'>0x4c</span>, <span class='number'>0xfa</span>, <span class='number'>0x59</span>, <span class='number'>0xca</span>, <span class='number'>0x34</span>, <span class='number'>0x2b</span>, <span class='number'>0x2e</span>,
<span class='number'>0x66</span>, <span class='number'>0xe9</span>, <span class='number'>0x4b</span>, <span class='number'>0xd4</span>, <span class='number'>0xef</span>, <span class='number'>0x8a</span>, <span class='number'>0x2c</span>, <span class='number'>0x3b</span>,
<span class='number'>0x88</span>, <span class='number'>0x4c</span>, <span class='number'>0xfa</span>, <span class='number'>0x59</span>, <span class='number'>0xca</span>, <span class='number'>0x34</span>, <span class='number'>0x2b</span>, <span class='number'>0x2e</span>,
<span class='number'>0x01</span>, <span class='number'>0x43</span>, <span class='number'>0xdb</span>, <span class='number'>0x63</span>, <span class='number'>0xee</span>, <span class='number'>0x66</span>, <span class='number'>0xb0</span>, <span class='number'>0xcd</span>,
<span class='number'>0xff</span>, <span class='number'>0x9f</span>, <span class='number'>0x69</span>, <span class='number'>0x91</span>, <span class='number'>0x76</span>, <span class='number'>0x80</span>, <span class='number'>0x15</span>, <span class='number'>0x1e</span> ]
},
<span class='ident'>EcbTest</span> {
<span class='ident'>key</span>: <span class='ident'>repeat</span>(<span class='number'>0</span>).<span class='ident'>take</span>(<span class='number'>16</span>).<span class='ident'>collect</span>(),
<span class='ident'>plain</span>: <span class='ident'>repeat</span>(<span class='number'>0</span>).<span class='ident'>take</span>(<span class='number'>33</span>).<span class='ident'>collect</span>(),
<span class='ident'>cipher</span>: <span class='macro'>vec</span><span class='macro'>!</span>[
<span class='number'>0x66</span>, <span class='number'>0xe9</span>, <span class='number'>0x4b</span>, <span class='number'>0xd4</span>, <span class='number'>0xef</span>, <span class='number'>0x8a</span>, <span class='number'>0x2c</span>, <span class='number'>0x3b</span>,
<span class='number'>0x88</span>, <span class='number'>0x4c</span>, <span class='number'>0xfa</span>, <span class='number'>0x59</span>, <span class='number'>0xca</span>, <span class='number'>0x34</span>, <span class='number'>0x2b</span>, <span class='number'>0x2e</span>,
<span class='number'>0x66</span>, <span class='number'>0xe9</span>, <span class='number'>0x4b</span>, <span class='number'>0xd4</span>, <span class='number'>0xef</span>, <span class='number'>0x8a</span>, <span class='number'>0x2c</span>, <span class='number'>0x3b</span>,
<span class='number'>0x88</span>, <span class='number'>0x4c</span>, <span class='number'>0xfa</span>, <span class='number'>0x59</span>, <span class='number'>0xca</span>, <span class='number'>0x34</span>, <span class='number'>0x2b</span>, <span class='number'>0x2e</span>,
<span class='number'>0x7a</span>, <span class='number'>0xdc</span>, <span class='number'>0x99</span>, <span class='number'>0xb2</span>, <span class='number'>0x9e</span>, <span class='number'>0x82</span>, <span class='number'>0xb1</span>, <span class='number'>0xb2</span>,
<span class='number'>0xb0</span>, <span class='number'>0xa6</span>, <span class='number'>0x5a</span>, <span class='number'>0x38</span>, <span class='number'>0xbc</span>, <span class='number'>0x57</span>, <span class='number'>0x8a</span>, <span class='number'>0x01</span> ]
}
]
}
<span class='kw'>fn</span> <span class='ident'>aes_cbc_no_padding_tests</span>() <span class='op'>-></span> <span class='ident'>Vec</span><span class='op'><</span><span class='ident'>CbcTest</span><span class='op'>></span> {
<span class='macro'>vec</span><span class='macro'>!</span>[
<span class='ident'>CbcTest</span> {
<span class='ident'>key</span>: <span class='ident'>repeat</span>(<span class='number'>1</span>).<span class='ident'>take</span>(<span class='number'>16</span>).<span class='ident'>collect</span>(),
<span class='ident'>iv</span>: <span class='ident'>repeat</span>(<span class='number'>3</span>).<span class='ident'>take</span>(<span class='number'>16</span>).<span class='ident'>collect</span>(),
<span class='ident'>plain</span>: <span class='ident'>repeat</span>(<span class='number'>2</span>).<span class='ident'>take</span>(<span class='number'>32</span>).<span class='ident'>collect</span>(),
<span class='ident'>cipher</span>: <span class='macro'>vec</span><span class='macro'>!</span>[
<span class='number'>0x5e</span>, <span class='number'>0x77</span>, <span class='number'>0xe5</span>, <span class='number'>0x9f</span>, <span class='number'>0x8f</span>, <span class='number'>0x85</span>, <span class='number'>0x94</span>, <span class='number'>0x34</span>,
<span class='number'>0x89</span>, <span class='number'>0xa2</span>, <span class='number'>0x41</span>, <span class='number'>0x49</span>, <span class='number'>0xc7</span>, <span class='number'>0x5f</span>, <span class='number'>0x4e</span>, <span class='number'>0xc9</span>,
<span class='number'>0xe0</span>, <span class='number'>0x9a</span>, <span class='number'>0x77</span>, <span class='number'>0x36</span>, <span class='number'>0xfb</span>, <span class='number'>0xc8</span>, <span class='number'>0xb2</span>, <span class='number'>0xdc</span>,
<span class='number'>0xb3</span>, <span class='number'>0xfb</span>, <span class='number'>0x9f</span>, <span class='number'>0xc0</span>, <span class='number'>0x31</span>, <span class='number'>0x4c</span>, <span class='number'>0xb0</span>, <span class='number'>0xb1</span> ]
}
]
}
<span class='kw'>fn</span> <span class='ident'>aes_cbc_pkcs_padding_tests</span>() <span class='op'>-></span> <span class='ident'>Vec</span><span class='op'><</span><span class='ident'>CbcTest</span><span class='op'>></span> {
<span class='macro'>vec</span><span class='macro'>!</span>[
<span class='ident'>CbcTest</span> {
<span class='ident'>key</span>: <span class='ident'>repeat</span>(<span class='number'>1</span>).<span class='ident'>take</span>(<span class='number'>16</span>).<span class='ident'>collect</span>(),
<span class='ident'>iv</span>: <span class='ident'>repeat</span>(<span class='number'>3</span>).<span class='ident'>take</span>(<span class='number'>16</span>).<span class='ident'>collect</span>(),
<span class='ident'>plain</span>: <span class='ident'>repeat</span>(<span class='number'>2</span>).<span class='ident'>take</span>(<span class='number'>32</span>).<span class='ident'>collect</span>(),
<span class='ident'>cipher</span>: <span class='macro'>vec</span><span class='macro'>!</span>[
<span class='number'>0x5e</span>, <span class='number'>0x77</span>, <span class='number'>0xe5</span>, <span class='number'>0x9f</span>, <span class='number'>0x8f</span>, <span class='number'>0x85</span>, <span class='number'>0x94</span>, <span class='number'>0x34</span>,
<span class='number'>0x89</span>, <span class='number'>0xa2</span>, <span class='number'>0x41</span>, <span class='number'>0x49</span>, <span class='number'>0xc7</span>, <span class='number'>0x5f</span>, <span class='number'>0x4e</span>, <span class='number'>0xc9</span>,
<span class='number'>0xe0</span>, <span class='number'>0x9a</span>, <span class='number'>0x77</span>, <span class='number'>0x36</span>, <span class='number'>0xfb</span>, <span class='number'>0xc8</span>, <span class='number'>0xb2</span>, <span class='number'>0xdc</span>,
<span class='number'>0xb3</span>, <span class='number'>0xfb</span>, <span class='number'>0x9f</span>, <span class='number'>0xc0</span>, <span class='number'>0x31</span>, <span class='number'>0x4c</span>, <span class='number'>0xb0</span>, <span class='number'>0xb1</span>,
<span class='number'>0xa4</span>, <span class='number'>0xc2</span>, <span class='number'>0xe4</span>, <span class='number'>0x62</span>, <span class='number'>0xef</span>, <span class='number'>0x7a</span>, <span class='number'>0xe3</span>, <span class='number'>0x7e</span>,
<span class='number'>0xef</span>, <span class='number'>0x88</span>, <span class='number'>0xf3</span>, <span class='number'>0x27</span>, <span class='number'>0xbd</span>, <span class='number'>0x9c</span>, <span class='number'>0xc8</span>, <span class='number'>0x4d</span> ]
},
<span class='ident'>CbcTest</span> {
<span class='ident'>key</span>: <span class='ident'>repeat</span>(<span class='number'>1</span>).<span class='ident'>take</span>(<span class='number'>16</span>).<span class='ident'>collect</span>(),
<span class='ident'>iv</span>: <span class='ident'>repeat</span>(<span class='number'>3</span>).<span class='ident'>take</span>(<span class='number'>16</span>).<span class='ident'>collect</span>(),
<span class='ident'>plain</span>: <span class='ident'>repeat</span>(<span class='number'>2</span>).<span class='ident'>take</span>(<span class='number'>33</span>).<span class='ident'>collect</span>(),
<span class='ident'>cipher</span>: <span class='macro'>vec</span><span class='macro'>!</span>[
<span class='number'>0x5e</span>, <span class='number'>0x77</span>, <span class='number'>0xe5</span>, <span class='number'>0x9f</span>, <span class='number'>0x8f</span>, <span class='number'>0x85</span>, <span class='number'>0x94</span>, <span class='number'>0x34</span>,
<span class='number'>0x89</span>, <span class='number'>0xa2</span>, <span class='number'>0x41</span>, <span class='number'>0x49</span>, <span class='number'>0xc7</span>, <span class='number'>0x5f</span>, <span class='number'>0x4e</span>, <span class='number'>0xc9</span>,
<span class='number'>0xe0</span>, <span class='number'>0x9a</span>, <span class='number'>0x77</span>, <span class='number'>0x36</span>, <span class='number'>0xfb</span>, <span class='number'>0xc8</span>, <span class='number'>0xb2</span>, <span class='number'>0xdc</span>,
<span class='number'>0xb3</span>, <span class='number'>0xfb</span>, <span class='number'>0x9f</span>, <span class='number'>0xc0</span>, <span class='number'>0x31</span>, <span class='number'>0x4c</span>, <span class='number'>0xb0</span>, <span class='number'>0xb1</span>,
<span class='number'>0x6c</span>, <span class='number'>0x47</span>, <span class='number'>0xcd</span>, <span class='number'>0xec</span>, <span class='number'>0xae</span>, <span class='number'>0xbb</span>, <span class='number'>0x1a</span>, <span class='number'>0x65</span>,
<span class='number'>0x04</span>, <span class='number'>0xd2</span>, <span class='number'>0x32</span>, <span class='number'>0x23</span>, <span class='number'>0xa6</span>, <span class='number'>0x8d</span>, <span class='number'>0x4a</span>, <span class='number'>0x65</span> ]
}
]
}
<span class='kw'>fn</span> <span class='ident'>aes_ctr_tests</span>() <span class='op'>-></span> <span class='ident'>Vec</span><span class='op'><</span><span class='ident'>CtrTest</span><span class='op'>></span> {
<span class='macro'>vec</span><span class='macro'>!</span>[
<span class='ident'>CtrTest</span> {
<span class='ident'>key</span>: <span class='ident'>repeat</span>(<span class='number'>1</span>).<span class='ident'>take</span>(<span class='number'>16</span>).<span class='ident'>collect</span>(),
<span class='ident'>ctr</span>: <span class='ident'>repeat</span>(<span class='number'>3</span>).<span class='ident'>take</span>(<span class='number'>16</span>).<span class='ident'>collect</span>(),
<span class='ident'>plain</span>: <span class='ident'>repeat</span>(<span class='number'>2</span>).<span class='ident'>take</span>(<span class='number'>33</span>).<span class='ident'>collect</span>(),
<span class='ident'>cipher</span>: <span class='macro'>vec</span><span class='macro'>!</span>[
<span class='number'>0x64</span>, <span class='number'>0x3e</span>, <span class='number'>0x05</span>, <span class='number'>0x19</span>, <span class='number'>0x79</span>, <span class='number'>0x78</span>, <span class='number'>0xd7</span>, <span class='number'>0x45</span>,
<span class='number'>0xa9</span>, <span class='number'>0x10</span>, <span class='number'>0x5f</span>, <span class='number'>0xd8</span>, <span class='number'>0x4c</span>, <span class='number'>0xd7</span>, <span class='number'>0xe6</span>, <span class='number'>0xb1</span>,
<span class='number'>0x5f</span>, <span class='number'>0x66</span>, <span class='number'>0xc6</span>, <span class='number'>0x17</span>, <span class='number'>0x4b</span>, <span class='number'>0x25</span>, <span class='number'>0xea</span>, <span class='number'>0x24</span>,
<span class='number'>0xe6</span>, <span class='number'>0xf9</span>, <span class='number'>0x19</span>, <span class='number'>0x09</span>, <span class='number'>0xb7</span>, <span class='number'>0xdd</span>, <span class='number'>0x84</span>, <span class='number'>0xfb</span>,
<span class='number'>0x86</span> ]
}
]
}
<span class='comment'>// Test the mode by encrypting all of the data at once</span>
<span class='kw'>fn</span> <span class='ident'>run_full_test</span><span class='op'><</span><span class='ident'>T</span>: <span class='ident'>CipherTest</span>, <span class='ident'>E</span>: <span class='ident'>Encryptor</span>, <span class='ident'>D</span>: <span class='ident'>Decryptor</span><span class='op'>></span>(
<span class='ident'>test</span>: <span class='kw-2'>&</span><span class='ident'>T</span>,
<span class='ident'>enc</span>: <span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>E</span>,
<span class='ident'>dec</span>: <span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>D</span>) {
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>cipher_out</span>: <span class='ident'>Vec</span><span class='op'><</span><span class='ident'>u8</span><span class='op'>></span> <span class='op'>=</span> <span class='ident'>repeat</span>(<span class='number'>0</span>).<span class='ident'>take</span>(<span class='ident'>test</span>.<span class='ident'>get_cipher</span>().<span class='ident'>len</span>()).<span class='ident'>collect</span>();
{
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>buff_in</span> <span class='op'>=</span> <span class='ident'>RefReadBuffer</span>::<span class='ident'>new</span>(<span class='ident'>test</span>.<span class='ident'>get_plain</span>());
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>buff_out</span> <span class='op'>=</span> <span class='ident'>RefWriteBuffer</span>::<span class='ident'>new</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>cipher_out</span>);
<span class='kw'>match</span> <span class='ident'>enc</span>.<span class='ident'>encrypt</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>buff_in</span>, <span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>buff_out</span>, <span class='bool-val'>true</span>) {
<span class='prelude-val'>Ok</span>(<span class='ident'>BufferUnderflow</span>) <span class='op'>=></span> {}
<span class='prelude-val'>Ok</span>(<span class='ident'>BufferOverflow</span>) <span class='op'>=></span> <span class='macro'>panic</span><span class='macro'>!</span>(<span class='string'>"Encryption not completed"</span>),
<span class='prelude-val'>Err</span>(_) <span class='op'>=></span> <span class='macro'>panic</span><span class='macro'>!</span>(<span class='string'>"Error"</span>),
}
}
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>test</span>.<span class='ident'>get_cipher</span>() <span class='op'>==</span> <span class='kw-2'>&</span><span class='ident'>cipher_out</span>[..]);
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>plain_out</span>: <span class='ident'>Vec</span><span class='op'><</span><span class='ident'>u8</span><span class='op'>></span> <span class='op'>=</span> <span class='ident'>repeat</span>(<span class='number'>0</span>).<span class='ident'>take</span>(<span class='ident'>test</span>.<span class='ident'>get_plain</span>().<span class='ident'>len</span>()).<span class='ident'>collect</span>();
{
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>buff_in</span> <span class='op'>=</span> <span class='ident'>RefReadBuffer</span>::<span class='ident'>new</span>(<span class='ident'>test</span>.<span class='ident'>get_cipher</span>());
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>buff_out</span> <span class='op'>=</span> <span class='ident'>RefWriteBuffer</span>::<span class='ident'>new</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>plain_out</span>);
<span class='kw'>match</span> <span class='ident'>dec</span>.<span class='ident'>decrypt</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>buff_in</span>, <span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>buff_out</span>, <span class='bool-val'>true</span>) {
<span class='prelude-val'>Ok</span>(<span class='ident'>BufferUnderflow</span>) <span class='op'>=></span> {}
<span class='prelude-val'>Ok</span>(<span class='ident'>BufferOverflow</span>) <span class='op'>=></span> <span class='macro'>panic</span><span class='macro'>!</span>(<span class='string'>"Decryption not completed"</span>),
<span class='prelude-val'>Err</span>(_) <span class='op'>=></span> <span class='macro'>panic</span><span class='macro'>!</span>(<span class='string'>"Error"</span>),
}
}
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>test</span>.<span class='ident'>get_plain</span>() <span class='op'>==</span> <span class='kw-2'>&</span><span class='ident'>plain_out</span>[..]);
}
<span class='doccomment'>/// Run and encryption or decryption operation, passing in variable sized input and output</span>
<span class='doccomment'>/// buffers.</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// # Arguments</span>
<span class='doccomment'>/// * input - The complete input vector</span>
<span class='doccomment'>/// * output - The complete output vector</span>
<span class='doccomment'>/// * op - A closure that runs either an encryption or decryption operation</span>
<span class='doccomment'>/// * next_in_len - A closure that returns the length to use for the next input buffer; If the</span>
<span class='doccomment'>/// returned value is not in a valid range, it will be fixed up by this</span>
<span class='doccomment'>/// function.</span>
<span class='doccomment'>/// * next_out_len - A closure that returns the length to use for the next output buffer; If the</span>
<span class='doccomment'>/// returned value is not in a valid range, it will be fixed up by this</span>
<span class='doccomment'>/// function.</span>
<span class='doccomment'>/// * immediate_eof - Whether eof should be set immediately upon running out of input or if eof</span>
<span class='doccomment'>/// should be passed only after all input has been consumed.</span>
<span class='kw'>fn</span> <span class='ident'>run_inc</span><span class='op'><</span><span class='ident'>OpFunc</span>, <span class='ident'>NextInFunc</span>, <span class='ident'>NextOutFunc</span><span class='op'>></span>(
<span class='ident'>input</span>: <span class='kw-2'>&</span>[<span class='ident'>u8</span>],
<span class='ident'>output</span>: <span class='kw-2'>&</span><span class='kw-2'>mut</span> [<span class='ident'>u8</span>],
<span class='kw-2'>mut</span> <span class='ident'>op</span>: <span class='ident'>OpFunc</span>,
<span class='kw-2'>mut</span> <span class='ident'>next_in_len</span>: <span class='ident'>NextInFunc</span>,
<span class='kw-2'>mut</span> <span class='ident'>next_out_len</span>: <span class='ident'>NextOutFunc</span>,
<span class='ident'>immediate_eof</span>: <span class='ident'>bool</span>)
<span class='kw'>where</span>
<span class='ident'>OpFunc</span>: <span class='ident'>FnMut</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>RefReadBuffer</span>, <span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>RefWriteBuffer</span>, <span class='ident'>bool</span>) <span class='op'>-></span>
<span class='prelude-ty'>Result</span><span class='op'><</span><span class='ident'>BufferResult</span>, <span class='ident'>SymmetricCipherError</span><span class='op'>></span>,
<span class='ident'>NextInFunc</span>: <span class='ident'>FnMut</span>() <span class='op'>-></span> <span class='ident'>usize</span>,
<span class='ident'>NextOutFunc</span>: <span class='ident'>FnMut</span>() <span class='op'>-></span> <span class='ident'>usize</span> {
<span class='kw'>use</span> <span class='ident'>std</span>::<span class='ident'>cell</span>::<span class='ident'>Cell</span>;
<span class='kw'>let</span> <span class='ident'>in_len</span> <span class='op'>=</span> <span class='ident'>input</span>.<span class='ident'>len</span>();
<span class='kw'>let</span> <span class='ident'>out_len</span> <span class='op'>=</span> <span class='ident'>output</span>.<span class='ident'>len</span>();
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>state</span>: <span class='prelude-ty'>Result</span><span class='op'><</span><span class='ident'>BufferResult</span>, <span class='ident'>SymmetricCipherError</span><span class='op'>></span> <span class='op'>=</span> <span class='prelude-val'>Ok</span>(<span class='ident'>BufferUnderflow</span>);
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>in_pos</span>: <span class='ident'>usize</span> <span class='op'>=</span> <span class='number'>0</span>;
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>out_pos</span>: <span class='ident'>usize</span> <span class='op'>=</span> <span class='number'>0</span>;
<span class='kw'>let</span> <span class='ident'>eof</span> <span class='op'>=</span> <span class='ident'>Cell</span>::<span class='ident'>new</span>(<span class='bool-val'>false</span>);
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>in_end</span> <span class='op'>=</span> <span class='op'>|</span><span class='ident'>in_pos</span>: <span class='ident'>usize</span>, <span class='ident'>primary</span>: <span class='ident'>bool</span><span class='op'>|</span> {
<span class='kw'>if</span> <span class='ident'>eof</span>.<span class='ident'>get</span>() {
<span class='kw'>return</span> <span class='ident'>in_len</span>;
}
<span class='kw'>let</span> <span class='ident'>x</span> <span class='op'>=</span> <span class='ident'>next_in_len</span>();
<span class='kw'>if</span> <span class='ident'>x</span> <span class='op'>>=</span> <span class='ident'>in_len</span> <span class='op'>&&</span> <span class='ident'>immediate_eof</span> {
<span class='ident'>eof</span>.<span class='ident'>set</span>(<span class='bool-val'>true</span>);
}
<span class='ident'>cmp</span>::<span class='ident'>min</span>(<span class='ident'>in_len</span>, <span class='ident'>in_pos</span> <span class='op'>+</span> <span class='ident'>cmp</span>::<span class='ident'>max</span>(<span class='ident'>x</span>, <span class='kw'>if</span> <span class='ident'>primary</span> { <span class='number'>1</span> } <span class='kw'>else</span> { <span class='number'>0</span> }))
};
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>out_end</span> <span class='op'>=</span> <span class='op'>|</span><span class='ident'>out_pos</span>: <span class='ident'>usize</span><span class='op'>|</span> {
<span class='kw'>let</span> <span class='ident'>x</span> <span class='op'>=</span> <span class='ident'>next_out_len</span>();
<span class='ident'>cmp</span>::<span class='ident'>min</span>(<span class='ident'>out_len</span>, <span class='ident'>out_pos</span> <span class='op'>+</span> <span class='ident'>cmp</span>::<span class='ident'>max</span>(<span class='ident'>x</span>, <span class='number'>1</span>))
};
<span class='kw'>loop</span> {
<span class='kw'>match</span> <span class='ident'>state</span> {
<span class='prelude-val'>Ok</span>(<span class='ident'>BufferUnderflow</span>) <span class='op'>=></span> {
<span class='kw'>if</span> <span class='ident'>in_pos</span> <span class='op'>==</span> <span class='ident'>input</span>.<span class='ident'>len</span>() {
<span class='kw'>break</span>;
}
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>tmp_in</span> <span class='op'>=</span> <span class='ident'>RefReadBuffer</span>::<span class='ident'>new</span>(<span class='kw-2'>&</span><span class='ident'>input</span>[<span class='ident'>in_pos</span>..<span class='ident'>in_end</span>(<span class='ident'>in_pos</span>, <span class='bool-val'>true</span>)]);
<span class='kw'>let</span> <span class='ident'>out_end</span> <span class='op'>=</span> <span class='ident'>out_end</span>(<span class='ident'>out_pos</span>);
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>tmp_out</span> <span class='op'>=</span> <span class='ident'>RefWriteBuffer</span>::<span class='ident'>new</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>output</span>[<span class='ident'>out_pos</span>..<span class='ident'>out_end</span>]);
<span class='ident'>state</span> <span class='op'>=</span> <span class='ident'>op</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>tmp_in</span>, <span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>tmp_out</span>, <span class='ident'>eof</span>.<span class='ident'>get</span>());
<span class='kw'>match</span> <span class='ident'>state</span> {
<span class='prelude-val'>Ok</span>(<span class='ident'>BufferUnderflow</span>) <span class='op'>=></span> <span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>tmp_in</span>.<span class='ident'>is_empty</span>()),
_ <span class='op'>=></span> {}
}
<span class='ident'>in_pos</span> <span class='op'>+=</span> <span class='ident'>tmp_in</span>.<span class='ident'>position</span>();
<span class='ident'>out_pos</span> <span class='op'>+=</span> <span class='ident'>tmp_out</span>.<span class='ident'>position</span>();
}
<span class='prelude-val'>Ok</span>(<span class='ident'>BufferOverflow</span>) <span class='op'>=></span> {
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>tmp_in</span> <span class='op'>=</span> <span class='ident'>RefReadBuffer</span>::<span class='ident'>new</span>(<span class='kw-2'>&</span><span class='ident'>input</span>[<span class='ident'>in_pos</span>..<span class='ident'>in_end</span>(<span class='ident'>in_pos</span>, <span class='bool-val'>false</span>)]);
<span class='kw'>let</span> <span class='ident'>out_end</span> <span class='op'>=</span> <span class='ident'>out_end</span>(<span class='ident'>out_pos</span>);
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>tmp_out</span> <span class='op'>=</span> <span class='ident'>RefWriteBuffer</span>::<span class='ident'>new</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>output</span>[<span class='ident'>out_pos</span>..<span class='ident'>out_end</span>]);
<span class='ident'>state</span> <span class='op'>=</span> <span class='ident'>op</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>tmp_in</span>, <span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>tmp_out</span>, <span class='ident'>eof</span>.<span class='ident'>get</span>());
<span class='kw'>match</span> <span class='ident'>state</span> {
<span class='prelude-val'>Ok</span>(<span class='ident'>BufferOverflow</span>) <span class='op'>=></span> <span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>tmp_out</span>.<span class='ident'>is_full</span>()),
_ <span class='op'>=></span> {}
}
<span class='ident'>in_pos</span> <span class='op'>+=</span> <span class='ident'>tmp_in</span>.<span class='ident'>position</span>();
<span class='ident'>out_pos</span> <span class='op'>+=</span> <span class='ident'>tmp_out</span>.<span class='ident'>position</span>();
}
<span class='prelude-val'>Err</span>(<span class='ident'>InvalidPadding</span>) <span class='op'>=></span> <span class='macro'>panic</span><span class='macro'>!</span>(<span class='string'>"Invalid Padding"</span>),
<span class='prelude-val'>Err</span>(<span class='ident'>InvalidLength</span>) <span class='op'>=></span> <span class='macro'>panic</span><span class='macro'>!</span>(<span class='string'>"Invalid Length"</span>)
}
}
<span class='kw'>if</span> <span class='op'>!</span><span class='ident'>eof</span>.<span class='ident'>get</span>() {
<span class='ident'>eof</span>.<span class='ident'>set</span>(<span class='bool-val'>true</span>);
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>tmp_out</span> <span class='op'>=</span> <span class='ident'>RefWriteBuffer</span>::<span class='ident'>new</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>output</span>[<span class='ident'>out_pos</span>..<span class='ident'>out_end</span>(<span class='ident'>out_pos</span>)]);
<span class='ident'>state</span> <span class='op'>=</span> <span class='ident'>op</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>RefReadBuffer</span>::<span class='ident'>new</span>(<span class='kw-2'>&</span>[]), <span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>tmp_out</span>, <span class='ident'>eof</span>.<span class='ident'>get</span>());
<span class='ident'>out_pos</span> <span class='op'>+=</span> <span class='ident'>tmp_out</span>.<span class='ident'>position</span>();
}
<span class='kw'>loop</span> {
<span class='kw'>match</span> <span class='ident'>state</span> {
<span class='prelude-val'>Ok</span>(<span class='ident'>BufferUnderflow</span>) <span class='op'>=></span> {
<span class='kw'>break</span>;
}
<span class='prelude-val'>Ok</span>(<span class='ident'>BufferOverflow</span>) <span class='op'>=></span> {
<span class='kw'>let</span> <span class='ident'>out_end</span> <span class='op'>=</span> <span class='ident'>out_end</span>(<span class='ident'>out_pos</span>);
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>tmp_out</span> <span class='op'>=</span> <span class='ident'>RefWriteBuffer</span>::<span class='ident'>new</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>output</span>[<span class='ident'>out_pos</span>..<span class='ident'>out_end</span>]);
<span class='ident'>state</span> <span class='op'>=</span> <span class='ident'>op</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>RefReadBuffer</span>::<span class='ident'>new</span>(<span class='kw-2'>&</span>[]), <span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>tmp_out</span>, <span class='ident'>eof</span>.<span class='ident'>get</span>());
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>tmp_out</span>.<span class='ident'>is_full</span>());
<span class='ident'>out_pos</span> <span class='op'>+=</span> <span class='ident'>tmp_out</span>.<span class='ident'>position</span>();
}
<span class='prelude-val'>Err</span>(<span class='ident'>InvalidPadding</span>) <span class='op'>=></span> <span class='macro'>panic</span><span class='macro'>!</span>(<span class='string'>"Invalid Padding"</span>),
<span class='prelude-val'>Err</span>(<span class='ident'>InvalidLength</span>) <span class='op'>=></span> <span class='macro'>panic</span><span class='macro'>!</span>(<span class='string'>"Invalid Length"</span>)
}
}
}
<span class='kw'>fn</span> <span class='ident'>run_inc1_test</span><span class='op'><</span><span class='ident'>T</span>: <span class='ident'>CipherTest</span>, <span class='ident'>E</span>: <span class='ident'>Encryptor</span>, <span class='ident'>D</span>: <span class='ident'>Decryptor</span><span class='op'>></span>(
<span class='ident'>test</span>: <span class='kw-2'>&</span><span class='ident'>T</span>,
<span class='ident'>enc</span>: <span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>E</span>,
<span class='ident'>dec</span>: <span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>D</span>) {
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>cipher_out</span>: <span class='ident'>Vec</span><span class='op'><</span><span class='ident'>u8</span><span class='op'>></span> <span class='op'>=</span> <span class='ident'>repeat</span>(<span class='number'>0</span>).<span class='ident'>take</span>(<span class='ident'>test</span>.<span class='ident'>get_cipher</span>().<span class='ident'>len</span>()).<span class='ident'>collect</span>();
<span class='ident'>run_inc</span>(
<span class='ident'>test</span>.<span class='ident'>get_plain</span>(),
<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>cipher_out</span>,
<span class='op'>|</span><span class='ident'>in_buff</span>: <span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>RefReadBuffer</span>, <span class='ident'>out_buff</span>: <span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>RefWriteBuffer</span>, <span class='ident'>eof</span>: <span class='ident'>bool</span><span class='op'>|</span> {
<span class='ident'>enc</span>.<span class='ident'>encrypt</span>(<span class='ident'>in_buff</span>, <span class='ident'>out_buff</span>, <span class='ident'>eof</span>)
},
<span class='op'>||</span> { <span class='number'>0</span> },
<span class='op'>||</span> { <span class='number'>1</span> },
<span class='bool-val'>false</span>);
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>test</span>.<span class='ident'>get_cipher</span>() <span class='op'>==</span> <span class='kw-2'>&</span><span class='ident'>cipher_out</span>[..]);
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>plain_out</span>: <span class='ident'>Vec</span><span class='op'><</span><span class='ident'>u8</span><span class='op'>></span> <span class='op'>=</span> <span class='ident'>repeat</span>(<span class='number'>0</span>).<span class='ident'>take</span>(<span class='ident'>test</span>.<span class='ident'>get_plain</span>().<span class='ident'>len</span>()).<span class='ident'>collect</span>();
<span class='ident'>run_inc</span>(
<span class='ident'>test</span>.<span class='ident'>get_cipher</span>(),
<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>plain_out</span>,
<span class='op'>|</span><span class='ident'>in_buff</span>: <span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>RefReadBuffer</span>, <span class='ident'>out_buff</span>: <span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>RefWriteBuffer</span>, <span class='ident'>eof</span>: <span class='ident'>bool</span><span class='op'>|</span> {
<span class='ident'>dec</span>.<span class='ident'>decrypt</span>(<span class='ident'>in_buff</span>, <span class='ident'>out_buff</span>, <span class='ident'>eof</span>)
},
<span class='op'>||</span> { <span class='number'>0</span> },
<span class='op'>||</span> { <span class='number'>1</span> },
<span class='bool-val'>false</span>);
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>test</span>.<span class='ident'>get_plain</span>() <span class='op'>==</span> <span class='kw-2'>&</span><span class='ident'>plain_out</span>[..]);
}
<span class='kw'>fn</span> <span class='ident'>run_rand_test</span><span class='op'><</span><span class='ident'>T</span>, <span class='ident'>E</span>, <span class='ident'>D</span>, <span class='ident'>NewEncFunc</span>, <span class='ident'>NewDecFunc</span><span class='op'>></span>(
<span class='ident'>test</span>: <span class='kw-2'>&</span><span class='ident'>T</span>,
<span class='kw-2'>mut</span> <span class='ident'>new_enc</span>: <span class='ident'>NewEncFunc</span>,
<span class='kw-2'>mut</span> <span class='ident'>new_dec</span>: <span class='ident'>NewDecFunc</span>)
<span class='kw'>where</span>
<span class='ident'>T</span>: <span class='ident'>CipherTest</span>,
<span class='ident'>E</span>: <span class='ident'>Encryptor</span>,
<span class='ident'>D</span>: <span class='ident'>Decryptor</span>,
<span class='ident'>NewEncFunc</span>: <span class='ident'>FnMut</span>() <span class='op'>-></span> <span class='ident'>E</span>,
<span class='ident'>NewDecFunc</span>: <span class='ident'>FnMut</span>() <span class='op'>-></span> <span class='ident'>D</span>{
<span class='kw'>use</span> <span class='ident'>rand</span>;
<span class='kw'>use</span> <span class='ident'>rand</span>::<span class='ident'>Rng</span>;
<span class='kw'>let</span> <span class='ident'>tmp</span> : <span class='kw-2'>&</span>[_] <span class='op'>=</span> <span class='kw-2'>&</span>[<span class='number'>1</span>, <span class='number'>2</span>, <span class='number'>3</span>, <span class='number'>4</span>];
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>rng1</span>: <span class='ident'>rand</span>::<span class='ident'>StdRng</span> <span class='op'>=</span> <span class='ident'>rand</span>::<span class='ident'>SeedableRng</span>::<span class='ident'>from_seed</span>(<span class='ident'>tmp</span>);
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>rng2</span>: <span class='ident'>rand</span>::<span class='ident'>StdRng</span> <span class='op'>=</span> <span class='ident'>rand</span>::<span class='ident'>SeedableRng</span>::<span class='ident'>from_seed</span>(<span class='ident'>tmp</span>);
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>rng3</span>: <span class='ident'>rand</span>::<span class='ident'>StdRng</span> <span class='op'>=</span> <span class='ident'>rand</span>::<span class='ident'>SeedableRng</span>::<span class='ident'>from_seed</span>(<span class='ident'>tmp</span>);
<span class='kw'>let</span> <span class='ident'>max_size</span> <span class='op'>=</span> <span class='ident'>cmp</span>::<span class='ident'>max</span>(<span class='ident'>test</span>.<span class='ident'>get_plain</span>().<span class='ident'>len</span>(), <span class='ident'>test</span>.<span class='ident'>get_cipher</span>().<span class='ident'>len</span>());
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>r1</span> <span class='op'>=</span> <span class='op'>||</span> {
<span class='ident'>rng1</span>.<span class='ident'>gen_range</span>(<span class='number'>0</span>, <span class='ident'>max_size</span>)
};
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>r2</span> <span class='op'>=</span> <span class='op'>||</span> {
<span class='ident'>rng2</span>.<span class='ident'>gen_range</span>(<span class='number'>0</span>, <span class='ident'>max_size</span>)
};
<span class='kw'>for</span> _ <span class='kw'>in</span> <span class='number'>0</span>..<span class='number'>1000</span> {
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>enc</span> <span class='op'>=</span> <span class='ident'>new_enc</span>();
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>dec</span> <span class='op'>=</span> <span class='ident'>new_dec</span>();
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>cipher_out</span>: <span class='ident'>Vec</span><span class='op'><</span><span class='ident'>u8</span><span class='op'>></span> <span class='op'>=</span> <span class='ident'>repeat</span>(<span class='number'>0</span>).<span class='ident'>take</span>(<span class='ident'>test</span>.<span class='ident'>get_cipher</span>().<span class='ident'>len</span>()).<span class='ident'>collect</span>();
<span class='ident'>run_inc</span>(
<span class='ident'>test</span>.<span class='ident'>get_plain</span>(),
<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>cipher_out</span>,
<span class='op'>|</span><span class='ident'>in_buff</span>: <span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>RefReadBuffer</span>, <span class='ident'>out_buff</span>: <span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>RefWriteBuffer</span>, <span class='ident'>eof</span>: <span class='ident'>bool</span><span class='op'>|</span> {
<span class='ident'>enc</span>.<span class='ident'>encrypt</span>(<span class='ident'>in_buff</span>, <span class='ident'>out_buff</span>, <span class='ident'>eof</span>)
},
<span class='op'>||</span> { <span class='ident'>r1</span>() },
<span class='op'>||</span> { <span class='ident'>r2</span>() },
<span class='ident'>rng3</span>.<span class='ident'>gen</span>());
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>test</span>.<span class='ident'>get_cipher</span>() <span class='op'>==</span> <span class='kw-2'>&</span><span class='ident'>cipher_out</span>[..]);
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>plain_out</span>: <span class='ident'>Vec</span><span class='op'><</span><span class='ident'>u8</span><span class='op'>></span> <span class='op'>=</span> <span class='ident'>repeat</span>(<span class='number'>0</span>).<span class='ident'>take</span>(<span class='ident'>test</span>.<span class='ident'>get_plain</span>().<span class='ident'>len</span>()).<span class='ident'>collect</span>();
<span class='ident'>run_inc</span>(
<span class='ident'>test</span>.<span class='ident'>get_cipher</span>(),
<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>plain_out</span>,
<span class='op'>|</span><span class='ident'>in_buff</span>: <span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>RefReadBuffer</span>, <span class='ident'>out_buff</span>: <span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>RefWriteBuffer</span>, <span class='ident'>eof</span>: <span class='ident'>bool</span><span class='op'>|</span> {
<span class='ident'>dec</span>.<span class='ident'>decrypt</span>(<span class='ident'>in_buff</span>, <span class='ident'>out_buff</span>, <span class='ident'>eof</span>)
},
<span class='op'>||</span> { <span class='ident'>r1</span>() },
<span class='op'>||</span> { <span class='ident'>r2</span>() },
<span class='ident'>rng3</span>.<span class='ident'>gen</span>());
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>test</span>.<span class='ident'>get_plain</span>() <span class='op'>==</span> <span class='kw-2'>&</span><span class='ident'>plain_out</span>[..]);
}
}
<span class='kw'>fn</span> <span class='ident'>run_test</span><span class='op'><</span><span class='ident'>T</span>, <span class='ident'>E</span>, <span class='ident'>D</span>, <span class='ident'>NewEncFunc</span>, <span class='ident'>NewDecFunc</span><span class='op'>></span>(
<span class='ident'>test</span>: <span class='kw-2'>&</span><span class='ident'>T</span>,
<span class='kw-2'>mut</span> <span class='ident'>new_enc</span>: <span class='ident'>NewEncFunc</span>,
<span class='kw-2'>mut</span> <span class='ident'>new_dec</span>: <span class='ident'>NewDecFunc</span>)
<span class='kw'>where</span>
<span class='ident'>T</span>: <span class='ident'>CipherTest</span>,
<span class='ident'>E</span>: <span class='ident'>Encryptor</span>,
<span class='ident'>D</span>: <span class='ident'>Decryptor</span>,
<span class='ident'>NewEncFunc</span>: <span class='ident'>FnMut</span>() <span class='op'>-></span> <span class='ident'>E</span>,
<span class='ident'>NewDecFunc</span>: <span class='ident'>FnMut</span>() <span class='op'>-></span> <span class='ident'>D</span>{
<span class='ident'>run_full_test</span>(<span class='ident'>test</span>, <span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>new_enc</span>(), <span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>new_dec</span>());
<span class='ident'>run_inc1_test</span>(<span class='ident'>test</span>, <span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>new_enc</span>(), <span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>new_dec</span>());
<span class='ident'>run_rand_test</span>(<span class='ident'>test</span>, <span class='ident'>new_enc</span>, <span class='ident'>new_dec</span>);
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='kw'>fn</span> <span class='ident'>aes_ecb_no_padding</span>() {
<span class='kw'>let</span> <span class='ident'>tests</span> <span class='op'>=</span> <span class='ident'>aes_ecb_no_padding_tests</span>();
<span class='kw'>for</span> <span class='ident'>test</span> <span class='kw'>in</span> <span class='ident'>tests</span>.<span class='ident'>iter</span>() {
<span class='ident'>run_test</span>(
<span class='ident'>test</span>,
<span class='op'>||</span> {
<span class='kw'>let</span> <span class='ident'>aes_enc</span> <span class='op'>=</span> <span class='ident'>aessafe</span>::<span class='ident'>AesSafe128Encryptor</span>::<span class='ident'>new</span>(<span class='kw-2'>&</span><span class='ident'>test</span>.<span class='ident'>key</span>[..]);
<span class='ident'>EcbEncryptor</span>::<span class='ident'>new</span>(<span class='ident'>aes_enc</span>, <span class='ident'>NoPadding</span>)
},
<span class='op'>||</span> {
<span class='kw'>let</span> <span class='ident'>aes_dec</span> <span class='op'>=</span> <span class='ident'>aessafe</span>::<span class='ident'>AesSafe128Decryptor</span>::<span class='ident'>new</span>(<span class='kw-2'>&</span><span class='ident'>test</span>.<span class='ident'>key</span>[..]);
<span class='ident'>EcbDecryptor</span>::<span class='ident'>new</span>(<span class='ident'>aes_dec</span>, <span class='ident'>NoPadding</span>)
});
}
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='kw'>fn</span> <span class='ident'>aes_ecb_pkcs_padding</span>() {
<span class='kw'>let</span> <span class='ident'>tests</span> <span class='op'>=</span> <span class='ident'>aes_ecb_pkcs_padding_tests</span>();
<span class='kw'>for</span> <span class='ident'>test</span> <span class='kw'>in</span> <span class='ident'>tests</span>.<span class='ident'>iter</span>() {
<span class='ident'>run_test</span>(
<span class='ident'>test</span>,
<span class='op'>||</span> {
<span class='kw'>let</span> <span class='ident'>aes_enc</span> <span class='op'>=</span> <span class='ident'>aessafe</span>::<span class='ident'>AesSafe128Encryptor</span>::<span class='ident'>new</span>(<span class='kw-2'>&</span><span class='ident'>test</span>.<span class='ident'>key</span>[..]);
<span class='ident'>EcbEncryptor</span>::<span class='ident'>new</span>(<span class='ident'>aes_enc</span>, <span class='ident'>PkcsPadding</span>)
},
<span class='op'>||</span> {
<span class='kw'>let</span> <span class='ident'>aes_dec</span> <span class='op'>=</span> <span class='ident'>aessafe</span>::<span class='ident'>AesSafe128Decryptor</span>::<span class='ident'>new</span>(<span class='kw-2'>&</span><span class='ident'>test</span>.<span class='ident'>key</span>[..]);
<span class='ident'>EcbDecryptor</span>::<span class='ident'>new</span>(<span class='ident'>aes_dec</span>, <span class='ident'>PkcsPadding</span>)
});
}
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='kw'>fn</span> <span class='ident'>aes_cbc_no_padding</span>() {
<span class='kw'>let</span> <span class='ident'>tests</span> <span class='op'>=</span> <span class='ident'>aes_cbc_no_padding_tests</span>();
<span class='kw'>for</span> <span class='ident'>test</span> <span class='kw'>in</span> <span class='ident'>tests</span>.<span class='ident'>iter</span>() {
<span class='ident'>run_test</span>(
<span class='ident'>test</span>,
<span class='op'>||</span> {
<span class='kw'>let</span> <span class='ident'>aes_enc</span> <span class='op'>=</span> <span class='ident'>aessafe</span>::<span class='ident'>AesSafe128Encryptor</span>::<span class='ident'>new</span>(<span class='kw-2'>&</span><span class='ident'>test</span>.<span class='ident'>key</span>[..]);
<span class='ident'>CbcEncryptor</span>::<span class='ident'>new</span>(<span class='ident'>aes_enc</span>, <span class='ident'>NoPadding</span>, <span class='ident'>test</span>.<span class='ident'>iv</span>.<span class='ident'>clone</span>())
},
<span class='op'>||</span> {
<span class='kw'>let</span> <span class='ident'>aes_dec</span> <span class='op'>=</span> <span class='ident'>aessafe</span>::<span class='ident'>AesSafe128Decryptor</span>::<span class='ident'>new</span>(<span class='kw-2'>&</span><span class='ident'>test</span>.<span class='ident'>key</span>[..]);
<span class='ident'>CbcDecryptor</span>::<span class='ident'>new</span>(<span class='ident'>aes_dec</span>, <span class='ident'>NoPadding</span>, <span class='ident'>test</span>.<span class='ident'>iv</span>.<span class='ident'>clone</span>())
});
}
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='kw'>fn</span> <span class='ident'>aes_cbc_pkcs_padding</span>() {
<span class='kw'>let</span> <span class='ident'>tests</span> <span class='op'>=</span> <span class='ident'>aes_cbc_pkcs_padding_tests</span>();
<span class='kw'>for</span> <span class='ident'>test</span> <span class='kw'>in</span> <span class='ident'>tests</span>.<span class='ident'>iter</span>() {
<span class='ident'>run_test</span>(
<span class='ident'>test</span>,
<span class='op'>||</span> {
<span class='kw'>let</span> <span class='ident'>aes_enc</span> <span class='op'>=</span> <span class='ident'>aessafe</span>::<span class='ident'>AesSafe128Encryptor</span>::<span class='ident'>new</span>(<span class='kw-2'>&</span><span class='ident'>test</span>.<span class='ident'>key</span>[..]);
<span class='ident'>CbcEncryptor</span>::<span class='ident'>new</span>(<span class='ident'>aes_enc</span>, <span class='ident'>PkcsPadding</span>, <span class='ident'>test</span>.<span class='ident'>iv</span>.<span class='ident'>clone</span>())
},
<span class='op'>||</span> {
<span class='kw'>let</span> <span class='ident'>aes_dec</span> <span class='op'>=</span> <span class='ident'>aessafe</span>::<span class='ident'>AesSafe128Decryptor</span>::<span class='ident'>new</span>(<span class='kw-2'>&</span><span class='ident'>test</span>.<span class='ident'>key</span>[..]);
<span class='ident'>CbcDecryptor</span>::<span class='ident'>new</span>(<span class='ident'>aes_dec</span>, <span class='ident'>PkcsPadding</span>, <span class='ident'>test</span>.<span class='ident'>iv</span>.<span class='ident'>clone</span>())
});
}
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='kw'>fn</span> <span class='ident'>aes_ctr</span>() {
<span class='kw'>let</span> <span class='ident'>tests</span> <span class='op'>=</span> <span class='ident'>aes_ctr_tests</span>();
<span class='kw'>for</span> <span class='ident'>test</span> <span class='kw'>in</span> <span class='ident'>tests</span>.<span class='ident'>iter</span>() {
<span class='ident'>run_test</span>(
<span class='ident'>test</span>,
<span class='op'>||</span> {
<span class='kw'>let</span> <span class='ident'>aes_enc</span> <span class='op'>=</span> <span class='ident'>aessafe</span>::<span class='ident'>AesSafe128Encryptor</span>::<span class='ident'>new</span>(<span class='kw-2'>&</span><span class='ident'>test</span>.<span class='ident'>key</span>[..]);
<span class='ident'>CtrMode</span>::<span class='ident'>new</span>(<span class='ident'>aes_enc</span>, <span class='ident'>test</span>.<span class='ident'>ctr</span>.<span class='ident'>clone</span>())
},
<span class='op'>||</span> {
<span class='kw'>let</span> <span class='ident'>aes_enc</span> <span class='op'>=</span> <span class='ident'>aessafe</span>::<span class='ident'>AesSafe128Encryptor</span>::<span class='ident'>new</span>(<span class='kw-2'>&</span><span class='ident'>test</span>.<span class='ident'>key</span>[..]);
<span class='ident'>CtrMode</span>::<span class='ident'>new</span>(<span class='ident'>aes_enc</span>, <span class='ident'>test</span>.<span class='ident'>ctr</span>.<span class='ident'>clone</span>())
});
}
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='kw'>fn</span> <span class='ident'>aes_ctr_x8</span>() {
<span class='kw'>let</span> <span class='ident'>tests</span> <span class='op'>=</span> <span class='ident'>aes_ctr_tests</span>();
<span class='kw'>for</span> <span class='ident'>test</span> <span class='kw'>in</span> <span class='ident'>tests</span>.<span class='ident'>iter</span>() {
<span class='ident'>run_test</span>(
<span class='ident'>test</span>,
<span class='op'>||</span> {
<span class='kw'>let</span> <span class='ident'>aes_enc</span> <span class='op'>=</span> <span class='ident'>aessafe</span>::<span class='ident'>AesSafe128EncryptorX8</span>::<span class='ident'>new</span>(<span class='kw-2'>&</span><span class='ident'>test</span>.<span class='ident'>key</span>[..]);
<span class='ident'>CtrModeX8</span>::<span class='ident'>new</span>(<span class='ident'>aes_enc</span>, <span class='kw-2'>&</span><span class='ident'>test</span>.<span class='ident'>ctr</span>[..])
},
<span class='op'>||</span> {
<span class='kw'>let</span> <span class='ident'>aes_enc</span> <span class='op'>=</span> <span class='ident'>aessafe</span>::<span class='ident'>AesSafe128EncryptorX8</span>::<span class='ident'>new</span>(<span class='kw-2'>&</span><span class='ident'>test</span>.<span class='ident'>key</span>[..]);
<span class='ident'>CtrModeX8</span>::<span class='ident'>new</span>(<span class='ident'>aes_enc</span>, <span class='kw-2'>&</span><span class='ident'>test</span>.<span class='ident'>ctr</span>[..])
});
}
}
}
<span class='attribute'>#[<span class='ident'>cfg</span>(<span class='ident'>all</span>(<span class='ident'>test</span>, <span class='ident'>feature</span> <span class='op'>=</span> <span class='string'>"with-bench"</span>))]</span>
<span class='kw'>mod</span> <span class='ident'>bench</span> {
<span class='kw'>use</span> <span class='ident'>aessafe</span>;
<span class='kw'>use</span> <span class='ident'>blockmodes</span>::{<span class='ident'>EcbEncryptor</span>, <span class='ident'>CbcEncryptor</span>, <span class='ident'>CtrMode</span>, <span class='ident'>CtrModeX8</span>,
<span class='ident'>NoPadding</span>, <span class='ident'>PkcsPadding</span>};
<span class='kw'>use</span> <span class='ident'>buffer</span>::{<span class='ident'>ReadBuffer</span>, <span class='ident'>WriteBuffer</span>, <span class='ident'>RefReadBuffer</span>, <span class='ident'>RefWriteBuffer</span>};
<span class='kw'>use</span> <span class='ident'>buffer</span>::<span class='ident'>BufferResult</span>::{<span class='ident'>BufferUnderflow</span>, <span class='ident'>BufferOverflow</span>};
<span class='kw'>use</span> <span class='ident'>symmetriccipher</span>::{<span class='ident'>Encryptor</span>};
<span class='kw'>use</span> <span class='ident'>test</span>::<span class='ident'>Bencher</span>;
<span class='attribute'>#[<span class='ident'>bench</span>]</span>
<span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>aes_ecb_no_padding_bench</span>(<span class='ident'>bh</span>: <span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>Bencher</span>) {
<span class='kw'>let</span> <span class='ident'>key</span> <span class='op'>=</span> [<span class='number'>1u8</span>; <span class='number'>16</span>];
<span class='kw'>let</span> <span class='ident'>plain</span> <span class='op'>=</span> [<span class='number'>3u8</span>; <span class='number'>512</span>];
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>cipher</span> <span class='op'>=</span> [<span class='number'>3u8</span>; <span class='number'>528</span>];
<span class='kw'>let</span> <span class='ident'>aes_enc</span> <span class='op'>=</span> <span class='ident'>aessafe</span>::<span class='ident'>AesSafe128Encryptor</span>::<span class='ident'>new</span>(<span class='kw-2'>&</span><span class='ident'>key</span>);
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>enc</span> <span class='op'>=</span> <span class='ident'>EcbEncryptor</span>::<span class='ident'>new</span>(<span class='ident'>aes_enc</span>, <span class='ident'>NoPadding</span>);
<span class='ident'>bh</span>.<span class='ident'>iter</span>( <span class='op'>||</span> {
<span class='ident'>enc</span>.<span class='ident'>reset</span>();
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>buff_in</span> <span class='op'>=</span> <span class='ident'>RefReadBuffer</span>::<span class='ident'>new</span>(<span class='kw-2'>&</span><span class='ident'>plain</span>);
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>buff_out</span> <span class='op'>=</span> <span class='ident'>RefWriteBuffer</span>::<span class='ident'>new</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>cipher</span>);
<span class='kw'>match</span> <span class='ident'>enc</span>.<span class='ident'>encrypt</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>buff_in</span>, <span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>buff_out</span>, <span class='bool-val'>true</span>) {
<span class='prelude-val'>Ok</span>(<span class='ident'>BufferUnderflow</span>) <span class='op'>=></span> {}
<span class='prelude-val'>Ok</span>(<span class='ident'>BufferOverflow</span>) <span class='op'>=></span> <span class='macro'>panic</span><span class='macro'>!</span>(<span class='string'>"Encryption not completed"</span>),
<span class='prelude-val'>Err</span>(_) <span class='op'>=></span> <span class='macro'>panic</span><span class='macro'>!</span>(<span class='string'>"Error"</span>),
}
});
<span class='ident'>bh</span>.<span class='ident'>bytes</span> <span class='op'>=</span> (<span class='ident'>plain</span>.<span class='ident'>len</span>()) <span class='kw'>as</span> <span class='ident'>u64</span>;
}
<span class='attribute'>#[<span class='ident'>bench</span>]</span>
<span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>aes_cbc_pkcs_padding_bench</span>(<span class='ident'>bh</span>: <span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>Bencher</span>) {
<span class='kw'>let</span> <span class='ident'>key</span> <span class='op'>=</span> [<span class='number'>1u8</span>; <span class='number'>16</span>];
<span class='kw'>let</span> <span class='ident'>iv</span> <span class='op'>=</span> [<span class='number'>2u8</span>; <span class='number'>16</span>];
<span class='kw'>let</span> <span class='ident'>plain</span> <span class='op'>=</span> [<span class='number'>3u8</span>; <span class='number'>512</span>];
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>cipher</span> <span class='op'>=</span> [<span class='number'>3u8</span>; <span class='number'>528</span>];
<span class='kw'>let</span> <span class='ident'>aes_enc</span> <span class='op'>=</span> <span class='ident'>aessafe</span>::<span class='ident'>AesSafe128Encryptor</span>::<span class='ident'>new</span>(<span class='kw-2'>&</span><span class='ident'>key</span>);
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>enc</span> <span class='op'>=</span> <span class='ident'>CbcEncryptor</span>::<span class='ident'>new</span>(<span class='ident'>aes_enc</span>, <span class='ident'>PkcsPadding</span>, <span class='ident'>iv</span>.<span class='ident'>to_vec</span>());
<span class='ident'>bh</span>.<span class='ident'>iter</span>( <span class='op'>||</span> {
<span class='ident'>enc</span>.<span class='ident'>reset</span>(<span class='kw-2'>&</span><span class='ident'>iv</span>);
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>buff_in</span> <span class='op'>=</span> <span class='ident'>RefReadBuffer</span>::<span class='ident'>new</span>(<span class='kw-2'>&</span><span class='ident'>plain</span>);
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>buff_out</span> <span class='op'>=</span> <span class='ident'>RefWriteBuffer</span>::<span class='ident'>new</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>cipher</span>);
<span class='kw'>match</span> <span class='ident'>enc</span>.<span class='ident'>encrypt</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>buff_in</span>, <span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>buff_out</span>, <span class='bool-val'>true</span>) {
<span class='prelude-val'>Ok</span>(<span class='ident'>BufferUnderflow</span>) <span class='op'>=></span> {}
<span class='prelude-val'>Ok</span>(<span class='ident'>BufferOverflow</span>) <span class='op'>=></span> <span class='macro'>panic</span><span class='macro'>!</span>(<span class='string'>"Encryption not completed"</span>),
<span class='prelude-val'>Err</span>(_) <span class='op'>=></span> <span class='macro'>panic</span><span class='macro'>!</span>(<span class='string'>"Error"</span>),
}
});
<span class='ident'>bh</span>.<span class='ident'>bytes</span> <span class='op'>=</span> (<span class='ident'>plain</span>.<span class='ident'>len</span>()) <span class='kw'>as</span> <span class='ident'>u64</span>;
}
<span class='attribute'>#[<span class='ident'>bench</span>]</span>
<span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>aes_ctr_bench</span>(<span class='ident'>bh</span>: <span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>Bencher</span>) {
<span class='kw'>let</span> <span class='ident'>key</span> <span class='op'>=</span> [<span class='number'>1u8</span>; <span class='number'>16</span>];
<span class='kw'>let</span> <span class='ident'>ctr</span> <span class='op'>=</span> [<span class='number'>2u8</span>; <span class='number'>16</span>];
<span class='kw'>let</span> <span class='ident'>plain</span> <span class='op'>=</span> [<span class='number'>3u8</span>; <span class='number'>512</span>];
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>cipher</span> <span class='op'>=</span> [<span class='number'>3u8</span>; <span class='number'>528</span>];
<span class='kw'>let</span> <span class='ident'>aes_enc</span> <span class='op'>=</span> <span class='ident'>aessafe</span>::<span class='ident'>AesSafe128Encryptor</span>::<span class='ident'>new</span>(<span class='kw-2'>&</span><span class='ident'>key</span>);
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>enc</span> <span class='op'>=</span> <span class='ident'>CtrMode</span>::<span class='ident'>new</span>(<span class='ident'>aes_enc</span>, <span class='ident'>ctr</span>.<span class='ident'>to_vec</span>());
<span class='ident'>bh</span>.<span class='ident'>iter</span>( <span class='op'>||</span> {
<span class='ident'>enc</span>.<span class='ident'>reset</span>(<span class='kw-2'>&</span><span class='ident'>ctr</span>);
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>buff_in</span> <span class='op'>=</span> <span class='ident'>RefReadBuffer</span>::<span class='ident'>new</span>(<span class='kw-2'>&</span><span class='ident'>plain</span>);
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>buff_out</span> <span class='op'>=</span> <span class='ident'>RefWriteBuffer</span>::<span class='ident'>new</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>cipher</span>);
<span class='kw'>match</span> <span class='ident'>enc</span>.<span class='ident'>encrypt</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>buff_in</span>, <span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>buff_out</span>, <span class='bool-val'>true</span>) {
<span class='prelude-val'>Ok</span>(<span class='ident'>BufferUnderflow</span>) <span class='op'>=></span> {}
<span class='prelude-val'>Ok</span>(<span class='ident'>BufferOverflow</span>) <span class='op'>=></span> <span class='macro'>panic</span><span class='macro'>!</span>(<span class='string'>"Encryption not completed"</span>),
<span class='prelude-val'>Err</span>(_) <span class='op'>=></span> <span class='macro'>panic</span><span class='macro'>!</span>(<span class='string'>"Error"</span>),
}
});
<span class='ident'>bh</span>.<span class='ident'>bytes</span> <span class='op'>=</span> (<span class='ident'>plain</span>.<span class='ident'>len</span>()) <span class='kw'>as</span> <span class='ident'>u64</span>;
}
<span class='attribute'>#[<span class='ident'>bench</span>]</span>
<span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>aes_ctr_x8_bench</span>(<span class='ident'>bh</span>: <span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>Bencher</span>) {
<span class='kw'>let</span> <span class='ident'>key</span> <span class='op'>=</span> [<span class='number'>1u8</span>; <span class='number'>16</span>];
<span class='kw'>let</span> <span class='ident'>ctr</span> <span class='op'>=</span> [<span class='number'>2u8</span>; <span class='number'>16</span>];
<span class='kw'>let</span> <span class='ident'>plain</span> <span class='op'>=</span> [<span class='number'>3u8</span>; <span class='number'>512</span>];
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>cipher</span> <span class='op'>=</span> [<span class='number'>3u8</span>; <span class='number'>528</span>];
<span class='kw'>let</span> <span class='ident'>aes_enc</span> <span class='op'>=</span> <span class='ident'>aessafe</span>::<span class='ident'>AesSafe128EncryptorX8</span>::<span class='ident'>new</span>(<span class='kw-2'>&</span><span class='ident'>key</span>);
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>enc</span> <span class='op'>=</span> <span class='ident'>CtrModeX8</span>::<span class='ident'>new</span>(<span class='ident'>aes_enc</span>, <span class='kw-2'>&</span><span class='ident'>ctr</span>);
<span class='ident'>bh</span>.<span class='ident'>iter</span>( <span class='op'>||</span> {
<span class='ident'>enc</span>.<span class='ident'>reset</span>(<span class='kw-2'>&</span><span class='ident'>ctr</span>);
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>buff_in</span> <span class='op'>=</span> <span class='ident'>RefReadBuffer</span>::<span class='ident'>new</span>(<span class='kw-2'>&</span><span class='ident'>plain</span>);
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>buff_out</span> <span class='op'>=</span> <span class='ident'>RefWriteBuffer</span>::<span class='ident'>new</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>cipher</span>);
<span class='kw'>match</span> <span class='ident'>enc</span>.<span class='ident'>encrypt</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>buff_in</span>, <span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>buff_out</span>, <span class='bool-val'>true</span>) {
<span class='prelude-val'>Ok</span>(<span class='ident'>BufferUnderflow</span>) <span class='op'>=></span> {}
<span class='prelude-val'>Ok</span>(<span class='ident'>BufferOverflow</span>) <span class='op'>=></span> <span class='macro'>panic</span><span class='macro'>!</span>(<span class='string'>"Encryption not completed"</span>),
<span class='prelude-val'>Err</span>(_) <span class='op'>=></span> <span class='macro'>panic</span><span class='macro'>!</span>(<span class='string'>"Error"</span>),
}
});
<span class='ident'>bh</span>.<span class='ident'>bytes</span> <span class='op'>=</span> (<span class='ident'>plain</span>.<span class='ident'>len</span>()) <span class='kw'>as</span> <span class='ident'>u64</span>;
}
}
</pre>
</section>
<section id='search' class="content hidden"></section>
<section class="footer"></section>
<aside id="help" class="hidden">
<div>
<h1 class="hidden">Help</h1>
<div class="shortcuts">
<h2>Keyboard Shortcuts</h2>
<dl>
<dt>?</dt>
<dd>Show this help dialog</dd>
<dt>S</dt>
<dd>Focus the search field</dd>
<dt>⇤</dt>
<dd>Move up in search results</dd>
<dt>⇥</dt>
<dd>Move down in search results</dd>
<dt>⏎</dt>
<dd>Go to active search result</dd>
<dt>+</dt>
<dd>Collapse/expand all sections</dd>
</dl>
</div>
<div class="infos">
<h2>Search Tricks</h2>
<p>
Prefix searches with a type followed by a colon (e.g.
<code>fn:</code>) to restrict the search to a given type.
</p>
<p>
Accepted types are: <code>fn</code>, <code>mod</code>,
<code>struct</code>, <code>enum</code>,
<code>trait</code>, <code>type</code>, <code>macro</code>,
and <code>const</code>.
</p>
<p>
Search functions by type signature (e.g.
<code>vec -> usize</code> or <code>* -> vec</code>)
</p>
</div>
</div>
</aside>
<script>
window.rootPath = "../../";
window.currentCrate = "crypto";
</script>
<script src="../../jquery.js"></script>
<script src="../../main.js"></script>
<script defer src="../../search-index.js"></script>
</body>
</html>