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</pre><pre class='rust '>
<span class='comment'>// Copyright 2012-2013 The Rust Project Developers. See the COPYRIGHT</span>
<span class='comment'>// file at the top-level directory of this distribution and at</span>
<span class='comment'>// http://rust-lang.org/COPYRIGHT.</span>
<span class='comment'>//</span>
<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='doccomment'>/*!
An implementation of the SHA-2 cryptographic hash algorithms.
There are 6 standard algorithms specified in the SHA-2 standard:
* `Sha224`, which is the 32-bit `Sha256` algorithm with the result truncated to 224 bits.
* `Sha256`, which is the 32-bit `Sha256` algorithm.
* `Sha384`, which is the 64-bit `Sha512` algorithm with the result truncated to 384 bits.
* `Sha512`, which is the 64-bit `Sha512` algorithm.
* `Sha512Trunc224`, which is the 64-bit `Sha512` algorithm with the result truncated to 224 bits.
* `Sha512Trunc256`, which is the 64-bit `Sha512` algorithm with the result truncated to 256 bits.
Algorithmically, there are only 2 core algorithms: `Sha256` and `Sha512`.
All other algorithms are just applications of these with different initial hash
values, and truncated to different digest bit lengths.
# Usage
An example of using `Sha256` is:
```rust
use self::crypto::digest::Digest;
use self::crypto::sha2::Sha256;
// create a Sha256 object
let mut hasher = Sha256::new();
// write input message
hasher.input_str("hello world");
// read hash digest
let hex = hasher.result_str();
assert_eq!(hex,
concat!("b94d27b9934d3e08a52e52d7da7dabfa",
"c484efe37a5380ee9088f7ace2efcde9"));
```
An example of using `Sha512` is:
```rust
use self::crypto::digest::Digest;
use self::crypto::sha2::Sha512;
// create a Sha512 object
let mut hasher = Sha512::new();
// write input message
hasher.input_str("hello world");
// read hash digest
let hex = hasher.result_str();
assert_eq!(hex,
concat!("309ecc489c12d6eb4cc40f50c902f2b4",
"d0ed77ee511a7c7a9bcd3ca86d4cd86f",
"989dd35bc5ff499670da34255b45b0cf",
"d830e81f605dcf7dc5542e93ae9cd76f"));
```
*/</span>
<span class='kw'>use</span> <span class='ident'>digest</span>::<span class='ident'>Digest</span>;
<span class='kw'>use</span> <span class='ident'>cryptoutil</span>::{<span class='ident'>write_u32_be</span>, <span class='ident'>read_u32v_be</span>,
<span class='ident'>write_u64_be</span>, <span class='ident'>read_u64v_be</span>,
<span class='ident'>add_bytes_to_bits</span>, <span class='ident'>add_bytes_to_bits_tuple</span>,
<span class='ident'>FixedBuffer</span>, <span class='ident'>FixedBuffer128</span>, <span class='ident'>FixedBuffer64</span>, <span class='ident'>StandardPadding</span>};
<span class='kw'>use</span> <span class='ident'>simd</span>::{<span class='ident'>u32x4</span>, <span class='ident'>u64x2</span>};
<span class='kw'>const</span> <span class='ident'>STATE_LEN</span>: <span class='ident'>usize</span> <span class='op'>=</span> <span class='number'>8</span>;
<span class='kw'>const</span> <span class='ident'>BLOCK_LEN</span>: <span class='ident'>usize</span> <span class='op'>=</span> <span class='number'>16</span>;
<span class='doccomment'>/// Not an intrinsic, but works like an unaligned load.</span>
<span class='attribute'>#[<span class='ident'>inline</span>]</span>
<span class='kw'>fn</span> <span class='ident'>sha256load</span>(<span class='ident'>v2</span>: <span class='ident'>u32x4</span>, <span class='ident'>v3</span>: <span class='ident'>u32x4</span>) <span class='op'>-></span> <span class='ident'>u32x4</span> {
<span class='ident'>u32x4</span>(<span class='ident'>v3</span>.<span class='number'>3</span>, <span class='ident'>v2</span>.<span class='number'>0</span>, <span class='ident'>v2</span>.<span class='number'>1</span>, <span class='ident'>v2</span>.<span class='number'>2</span>)
}
<span class='doccomment'>/// Not an intrinsic, but useful for swapping vectors.</span>
<span class='attribute'>#[<span class='ident'>inline</span>]</span>
<span class='kw'>fn</span> <span class='ident'>sha256swap</span>(<span class='ident'>v0</span>: <span class='ident'>u32x4</span>) <span class='op'>-></span> <span class='ident'>u32x4</span> {
<span class='ident'>u32x4</span>(<span class='ident'>v0</span>.<span class='number'>2</span>, <span class='ident'>v0</span>.<span class='number'>3</span>, <span class='ident'>v0</span>.<span class='number'>0</span>, <span class='ident'>v0</span>.<span class='number'>1</span>)
}
<span class='doccomment'>/// Emulates `llvm.x86.sha256msg1` intrinsic.</span>
<span class='comment'>//#[inline]</span>
<span class='kw'>fn</span> <span class='ident'>sha256msg1</span>(<span class='ident'>v0</span>: <span class='ident'>u32x4</span>, <span class='ident'>v1</span>: <span class='ident'>u32x4</span>) <span class='op'>-></span> <span class='ident'>u32x4</span> {
<span class='comment'>// sigma 0 on vectors</span>
<span class='attribute'>#[<span class='ident'>inline</span>]</span>
<span class='kw'>fn</span> <span class='ident'>sigma0x4</span>(<span class='ident'>x</span>: <span class='ident'>u32x4</span>) <span class='op'>-></span> <span class='ident'>u32x4</span> {
((<span class='ident'>x</span> <span class='op'>>></span> <span class='ident'>u32x4</span>( <span class='number'>7</span>, <span class='number'>7</span>, <span class='number'>7</span>, <span class='number'>7</span>)) <span class='op'>|</span> (<span class='ident'>x</span> <span class='op'><<</span> <span class='ident'>u32x4</span>(<span class='number'>25</span>, <span class='number'>25</span>, <span class='number'>25</span>, <span class='number'>25</span>))) <span class='op'>^</span>
((<span class='ident'>x</span> <span class='op'>>></span> <span class='ident'>u32x4</span>(<span class='number'>18</span>, <span class='number'>18</span>, <span class='number'>18</span>, <span class='number'>18</span>)) <span class='op'>|</span> (<span class='ident'>x</span> <span class='op'><<</span> <span class='ident'>u32x4</span>(<span class='number'>14</span>, <span class='number'>14</span>, <span class='number'>14</span>, <span class='number'>14</span>))) <span class='op'>^</span>
(<span class='ident'>x</span> <span class='op'>>></span> <span class='ident'>u32x4</span>( <span class='number'>3</span>, <span class='number'>3</span>, <span class='number'>3</span>, <span class='number'>3</span>))
}
<span class='ident'>v0</span> <span class='op'>+</span> <span class='ident'>sigma0x4</span>(<span class='ident'>sha256load</span>(<span class='ident'>v0</span>, <span class='ident'>v1</span>))
}
<span class='doccomment'>/// Emulates `llvm.x86.sha256msg2` intrinsic.</span>
<span class='comment'>//#[inline]</span>
<span class='kw'>fn</span> <span class='ident'>sha256msg2</span>(<span class='ident'>v4</span>: <span class='ident'>u32x4</span>, <span class='ident'>v3</span>: <span class='ident'>u32x4</span>) <span class='op'>-></span> <span class='ident'>u32x4</span> {
<span class='macro'>macro_rules</span><span class='macro'>!</span> <span class='ident'>sigma1</span> {
(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>a</span>:<span class='ident'>expr</span>) <span class='op'>=></span> ((<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>a</span>.<span class='ident'>rotate_right</span>(<span class='number'>17</span>) <span class='op'>^</span> <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>a</span>.<span class='ident'>rotate_right</span>(<span class='number'>19</span>) <span class='op'>^</span> (<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>a</span> <span class='op'>>></span> <span class='number'>10</span>)))
}
<span class='kw'>let</span> <span class='ident'>u32x4</span>(<span class='ident'>x3</span>, <span class='ident'>x2</span>, <span class='ident'>x1</span>, <span class='ident'>x0</span>) <span class='op'>=</span> <span class='ident'>v4</span>;
<span class='kw'>let</span> <span class='ident'>u32x4</span>(<span class='ident'>w15</span>, <span class='ident'>w14</span>, _, _) <span class='op'>=</span> <span class='ident'>v3</span>;
<span class='kw'>let</span> <span class='ident'>w16</span> <span class='op'>=</span> <span class='ident'>x0</span>.<span class='ident'>wrapping_add</span>(<span class='macro'>sigma1</span><span class='macro'>!</span>(<span class='ident'>w14</span>));
<span class='kw'>let</span> <span class='ident'>w17</span> <span class='op'>=</span> <span class='ident'>x1</span>.<span class='ident'>wrapping_add</span>(<span class='macro'>sigma1</span><span class='macro'>!</span>(<span class='ident'>w15</span>));
<span class='kw'>let</span> <span class='ident'>w18</span> <span class='op'>=</span> <span class='ident'>x2</span>.<span class='ident'>wrapping_add</span>(<span class='macro'>sigma1</span><span class='macro'>!</span>(<span class='ident'>w16</span>));
<span class='kw'>let</span> <span class='ident'>w19</span> <span class='op'>=</span> <span class='ident'>x3</span>.<span class='ident'>wrapping_add</span>(<span class='macro'>sigma1</span><span class='macro'>!</span>(<span class='ident'>w17</span>));
<span class='ident'>u32x4</span>(<span class='ident'>w19</span>, <span class='ident'>w18</span>, <span class='ident'>w17</span>, <span class='ident'>w16</span>)
}
<span class='doccomment'>/// Performs 4 rounds of the SHA-256 message schedule update.</span>
<span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>sha256_schedule_x4</span>(<span class='ident'>v0</span>: <span class='ident'>u32x4</span>, <span class='ident'>v1</span>: <span class='ident'>u32x4</span>, <span class='ident'>v2</span>: <span class='ident'>u32x4</span>, <span class='ident'>v3</span>: <span class='ident'>u32x4</span>) <span class='op'>-></span> <span class='ident'>u32x4</span> {
<span class='ident'>sha256msg2</span>(<span class='ident'>sha256msg1</span>(<span class='ident'>v0</span>, <span class='ident'>v1</span>) <span class='op'>+</span> <span class='ident'>sha256load</span>(<span class='ident'>v2</span>, <span class='ident'>v3</span>), <span class='ident'>v3</span>)
}
<span class='doccomment'>/// Emulates `llvm.x86.sha256rnds2` intrinsic.</span>
<span class='comment'>//#[inline]</span>
<span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>sha256_digest_round_x2</span>(<span class='ident'>cdgh</span>: <span class='ident'>u32x4</span>, <span class='ident'>abef</span>: <span class='ident'>u32x4</span>, <span class='ident'>wk</span>: <span class='ident'>u32x4</span>) <span class='op'>-></span> <span class='ident'>u32x4</span> {
<span class='macro'>macro_rules</span><span class='macro'>!</span> <span class='ident'>big_sigma0</span> {
(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>a</span>:<span class='ident'>expr</span>) <span class='op'>=></span> ((<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>a</span>.<span class='ident'>rotate_right</span>(<span class='number'>2</span>) <span class='op'>^</span> <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>a</span>.<span class='ident'>rotate_right</span>(<span class='number'>13</span>) <span class='op'>^</span> <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>a</span>.<span class='ident'>rotate_right</span>(<span class='number'>22</span>)))
}
<span class='macro'>macro_rules</span><span class='macro'>!</span> <span class='ident'>big_sigma1</span> {
(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>a</span>:<span class='ident'>expr</span>) <span class='op'>=></span> ((<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>a</span>.<span class='ident'>rotate_right</span>(<span class='number'>6</span>) <span class='op'>^</span> <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>a</span>.<span class='ident'>rotate_right</span>(<span class='number'>11</span>) <span class='op'>^</span> <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>a</span>.<span class='ident'>rotate_right</span>(<span class='number'>25</span>)))
}
<span class='macro'>macro_rules</span><span class='macro'>!</span> <span class='ident'>bool3ary_202</span> {
(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>a</span>:<span class='ident'>expr</span>, <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>b</span>:<span class='ident'>expr</span>, <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>c</span>:<span class='ident'>expr</span>) <span class='op'>=></span> ((<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>c</span> <span class='op'>^</span> (<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>a</span> <span class='op'>&</span> (<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>b</span> <span class='op'>^</span> <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>c</span>))))
} <span class='comment'>// Choose, MD5F, SHA1C</span>
<span class='macro'>macro_rules</span><span class='macro'>!</span> <span class='ident'>bool3ary_232</span> {
(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>a</span>:<span class='ident'>expr</span>, <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>b</span>:<span class='ident'>expr</span>, <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>c</span>:<span class='ident'>expr</span>) <span class='op'>=></span> ((<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>a</span> <span class='op'>&</span> <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>b</span>) <span class='op'>^</span> (<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>a</span> <span class='op'>&</span> <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>c</span>) <span class='op'>^</span> (<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>b</span> <span class='op'>&</span> <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>c</span>))
} <span class='comment'>// Majority, SHA1M</span>
<span class='kw'>let</span> <span class='ident'>u32x4</span>(_, _, <span class='ident'>wk1</span>, <span class='ident'>wk0</span>) <span class='op'>=</span> <span class='ident'>wk</span>;
<span class='kw'>let</span> <span class='ident'>u32x4</span>(<span class='ident'>a0</span>, <span class='ident'>b0</span>, <span class='ident'>e0</span>, <span class='ident'>f0</span>) <span class='op'>=</span> <span class='ident'>abef</span>;
<span class='kw'>let</span> <span class='ident'>u32x4</span>(<span class='ident'>c0</span>, <span class='ident'>d0</span>, <span class='ident'>g0</span>, <span class='ident'>h0</span>) <span class='op'>=</span> <span class='ident'>cdgh</span>;
<span class='comment'>// a round</span>
<span class='kw'>let</span> <span class='ident'>x0</span> <span class='op'>=</span> <span class='macro'>big_sigma1</span><span class='macro'>!</span>(<span class='ident'>e0</span>).<span class='ident'>wrapping_add</span>(<span class='macro'>bool3ary_202</span><span class='macro'>!</span>(<span class='ident'>e0</span>, <span class='ident'>f0</span>, <span class='ident'>g0</span>)).<span class='ident'>wrapping_add</span>(<span class='ident'>wk0</span>).<span class='ident'>wrapping_add</span>(<span class='ident'>h0</span>);
<span class='kw'>let</span> <span class='ident'>y0</span> <span class='op'>=</span> <span class='macro'>big_sigma0</span><span class='macro'>!</span>(<span class='ident'>a0</span>).<span class='ident'>wrapping_add</span>(<span class='macro'>bool3ary_232</span><span class='macro'>!</span>(<span class='ident'>a0</span>, <span class='ident'>b0</span>, <span class='ident'>c0</span>));
<span class='kw'>let</span> (<span class='ident'>a1</span>, <span class='ident'>b1</span>, <span class='ident'>c1</span>, <span class='ident'>d1</span>, <span class='ident'>e1</span>, <span class='ident'>f1</span>, <span class='ident'>g1</span>, <span class='ident'>h1</span>) <span class='op'>=</span> (
<span class='ident'>x0</span>.<span class='ident'>wrapping_add</span>(<span class='ident'>y0</span>), <span class='ident'>a0</span>, <span class='ident'>b0</span>, <span class='ident'>c0</span>,
<span class='ident'>x0</span>.<span class='ident'>wrapping_add</span>(<span class='ident'>d0</span>), <span class='ident'>e0</span>, <span class='ident'>f0</span>, <span class='ident'>g0</span>);
<span class='comment'>// a round</span>
<span class='kw'>let</span> <span class='ident'>x1</span> <span class='op'>=</span> <span class='macro'>big_sigma1</span><span class='macro'>!</span>(<span class='ident'>e1</span>).<span class='ident'>wrapping_add</span>(<span class='macro'>bool3ary_202</span><span class='macro'>!</span>(<span class='ident'>e1</span>, <span class='ident'>f1</span>, <span class='ident'>g1</span>)).<span class='ident'>wrapping_add</span>(<span class='ident'>wk1</span>).<span class='ident'>wrapping_add</span>(<span class='ident'>h1</span>);
<span class='kw'>let</span> <span class='ident'>y1</span> <span class='op'>=</span> <span class='macro'>big_sigma0</span><span class='macro'>!</span>(<span class='ident'>a1</span>).<span class='ident'>wrapping_add</span>(<span class='macro'>bool3ary_232</span><span class='macro'>!</span>(<span class='ident'>a1</span>, <span class='ident'>b1</span>, <span class='ident'>c1</span>));
<span class='kw'>let</span> (<span class='ident'>a2</span>, <span class='ident'>b2</span>, _, _, <span class='ident'>e2</span>, <span class='ident'>f2</span>, _, _) <span class='op'>=</span> (
<span class='ident'>x1</span>.<span class='ident'>wrapping_add</span>(<span class='ident'>y1</span>), <span class='ident'>a1</span>, <span class='ident'>b1</span>, <span class='ident'>c1</span>,
<span class='ident'>x1</span>.<span class='ident'>wrapping_add</span>(<span class='ident'>d1</span>), <span class='ident'>e1</span>, <span class='ident'>f1</span>, <span class='ident'>g1</span>);
<span class='ident'>u32x4</span>(<span class='ident'>a2</span>, <span class='ident'>b2</span>, <span class='ident'>e2</span>, <span class='ident'>f2</span>)
}
<span class='doccomment'>/// Process a block with the SHA-256 algorithm.</span>
<span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>sha256_digest_block_u32</span>(<span class='ident'>state</span>: <span class='kw-2'>&</span><span class='kw-2'>mut</span> [<span class='ident'>u32</span>; <span class='number'>8</span>], <span class='ident'>block</span>: <span class='kw-2'>&</span>[<span class='ident'>u32</span>; <span class='number'>16</span>]) {
<span class='kw'>let</span> <span class='ident'>k</span> <span class='op'>=</span> <span class='kw-2'>&</span><span class='ident'>K32X4</span>;
<span class='macro'>macro_rules</span><span class='macro'>!</span> <span class='ident'>schedule</span> {
(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>v0</span>:<span class='ident'>expr</span>, <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>v1</span>:<span class='ident'>expr</span>, <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>v2</span>:<span class='ident'>expr</span>, <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>v3</span>:<span class='ident'>expr</span>) <span class='op'>=></span> (
<span class='ident'>sha256msg2</span>(<span class='ident'>sha256msg1</span>(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>v0</span>, <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>v1</span>) <span class='op'>+</span> <span class='ident'>sha256load</span>(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>v2</span>, <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>v3</span>), <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>v3</span>)
)
}
<span class='macro'>macro_rules</span><span class='macro'>!</span> <span class='ident'>rounds4</span> {
(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>abef</span>:<span class='ident'>ident</span>, <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>cdgh</span>:<span class='ident'>ident</span>, <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>rest</span>:<span class='ident'>expr</span>) <span class='op'>=></span> {
{
<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>cdgh</span> <span class='op'>=</span> <span class='ident'>sha256_digest_round_x2</span>(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>cdgh</span>, <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>abef</span>, <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>rest</span>);
<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>abef</span> <span class='op'>=</span> <span class='ident'>sha256_digest_round_x2</span>(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>abef</span>, <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>cdgh</span>, <span class='ident'>sha256swap</span>(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>rest</span>));
}
}
}
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>abef</span> <span class='op'>=</span> <span class='ident'>u32x4</span>(<span class='ident'>state</span>[<span class='number'>0</span>],
<span class='ident'>state</span>[<span class='number'>1</span>],
<span class='ident'>state</span>[<span class='number'>4</span>],
<span class='ident'>state</span>[<span class='number'>5</span>]);
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>cdgh</span> <span class='op'>=</span> <span class='ident'>u32x4</span>(<span class='ident'>state</span>[<span class='number'>2</span>],
<span class='ident'>state</span>[<span class='number'>3</span>],
<span class='ident'>state</span>[<span class='number'>6</span>],
<span class='ident'>state</span>[<span class='number'>7</span>]);
<span class='comment'>// Rounds 0..64</span>
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>w0</span> <span class='op'>=</span> <span class='ident'>u32x4</span>(<span class='ident'>block</span>[<span class='number'>3</span>],
<span class='ident'>block</span>[<span class='number'>2</span>],
<span class='ident'>block</span>[<span class='number'>1</span>],
<span class='ident'>block</span>[<span class='number'>0</span>]);
<span class='macro'>rounds4</span><span class='macro'>!</span>(<span class='ident'>abef</span>, <span class='ident'>cdgh</span>, <span class='ident'>k</span>[<span class='number'>0</span>] <span class='op'>+</span> <span class='ident'>w0</span>);
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>w1</span> <span class='op'>=</span> <span class='ident'>u32x4</span>(<span class='ident'>block</span>[<span class='number'>7</span>],
<span class='ident'>block</span>[<span class='number'>6</span>],
<span class='ident'>block</span>[<span class='number'>5</span>],
<span class='ident'>block</span>[<span class='number'>4</span>]);
<span class='macro'>rounds4</span><span class='macro'>!</span>(<span class='ident'>abef</span>, <span class='ident'>cdgh</span>, <span class='ident'>k</span>[<span class='number'>1</span>] <span class='op'>+</span> <span class='ident'>w1</span>);
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>w2</span> <span class='op'>=</span> <span class='ident'>u32x4</span>(<span class='ident'>block</span>[<span class='number'>11</span>],
<span class='ident'>block</span>[<span class='number'>10</span>],
<span class='ident'>block</span>[<span class='number'>9</span>],
<span class='ident'>block</span>[<span class='number'>8</span>]);
<span class='macro'>rounds4</span><span class='macro'>!</span>(<span class='ident'>abef</span>, <span class='ident'>cdgh</span>, <span class='ident'>k</span>[<span class='number'>2</span>] <span class='op'>+</span> <span class='ident'>w2</span>);
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>w3</span> <span class='op'>=</span> <span class='ident'>u32x4</span>(<span class='ident'>block</span>[<span class='number'>15</span>],
<span class='ident'>block</span>[<span class='number'>14</span>],
<span class='ident'>block</span>[<span class='number'>13</span>],
<span class='ident'>block</span>[<span class='number'>12</span>]);
<span class='macro'>rounds4</span><span class='macro'>!</span>(<span class='ident'>abef</span>, <span class='ident'>cdgh</span>, <span class='ident'>k</span>[<span class='number'>3</span>] <span class='op'>+</span> <span class='ident'>w3</span>);
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>w4</span> <span class='op'>=</span> <span class='macro'>schedule</span><span class='macro'>!</span>(<span class='ident'>w0</span>, <span class='ident'>w1</span>, <span class='ident'>w2</span>, <span class='ident'>w3</span>);
<span class='macro'>rounds4</span><span class='macro'>!</span>(<span class='ident'>abef</span>, <span class='ident'>cdgh</span>, <span class='ident'>k</span>[<span class='number'>4</span>] <span class='op'>+</span> <span class='ident'>w4</span>);
<span class='ident'>w0</span> <span class='op'>=</span> <span class='macro'>schedule</span><span class='macro'>!</span>(<span class='ident'>w1</span>, <span class='ident'>w2</span>, <span class='ident'>w3</span>, <span class='ident'>w4</span>);
<span class='macro'>rounds4</span><span class='macro'>!</span>(<span class='ident'>abef</span>, <span class='ident'>cdgh</span>, <span class='ident'>k</span>[<span class='number'>5</span>] <span class='op'>+</span> <span class='ident'>w0</span>);
<span class='ident'>w1</span> <span class='op'>=</span> <span class='macro'>schedule</span><span class='macro'>!</span>(<span class='ident'>w2</span>, <span class='ident'>w3</span>, <span class='ident'>w4</span>, <span class='ident'>w0</span>);
<span class='macro'>rounds4</span><span class='macro'>!</span>(<span class='ident'>abef</span>, <span class='ident'>cdgh</span>, <span class='ident'>k</span>[<span class='number'>6</span>] <span class='op'>+</span> <span class='ident'>w1</span>);
<span class='ident'>w2</span> <span class='op'>=</span> <span class='macro'>schedule</span><span class='macro'>!</span>(<span class='ident'>w3</span>, <span class='ident'>w4</span>, <span class='ident'>w0</span>, <span class='ident'>w1</span>);
<span class='macro'>rounds4</span><span class='macro'>!</span>(<span class='ident'>abef</span>, <span class='ident'>cdgh</span>, <span class='ident'>k</span>[<span class='number'>7</span>] <span class='op'>+</span> <span class='ident'>w2</span>);
<span class='ident'>w3</span> <span class='op'>=</span> <span class='macro'>schedule</span><span class='macro'>!</span>(<span class='ident'>w4</span>, <span class='ident'>w0</span>, <span class='ident'>w1</span>, <span class='ident'>w2</span>);
<span class='macro'>rounds4</span><span class='macro'>!</span>(<span class='ident'>abef</span>, <span class='ident'>cdgh</span>, <span class='ident'>k</span>[<span class='number'>8</span>] <span class='op'>+</span> <span class='ident'>w3</span>);
<span class='ident'>w4</span> <span class='op'>=</span> <span class='macro'>schedule</span><span class='macro'>!</span>(<span class='ident'>w0</span>, <span class='ident'>w1</span>, <span class='ident'>w2</span>, <span class='ident'>w3</span>);
<span class='macro'>rounds4</span><span class='macro'>!</span>(<span class='ident'>abef</span>, <span class='ident'>cdgh</span>, <span class='ident'>k</span>[<span class='number'>9</span>] <span class='op'>+</span> <span class='ident'>w4</span>);
<span class='ident'>w0</span> <span class='op'>=</span> <span class='macro'>schedule</span><span class='macro'>!</span>(<span class='ident'>w1</span>, <span class='ident'>w2</span>, <span class='ident'>w3</span>, <span class='ident'>w4</span>);
<span class='macro'>rounds4</span><span class='macro'>!</span>(<span class='ident'>abef</span>, <span class='ident'>cdgh</span>, <span class='ident'>k</span>[<span class='number'>10</span>] <span class='op'>+</span> <span class='ident'>w0</span>);
<span class='ident'>w1</span> <span class='op'>=</span> <span class='macro'>schedule</span><span class='macro'>!</span>(<span class='ident'>w2</span>, <span class='ident'>w3</span>, <span class='ident'>w4</span>, <span class='ident'>w0</span>);
<span class='macro'>rounds4</span><span class='macro'>!</span>(<span class='ident'>abef</span>, <span class='ident'>cdgh</span>, <span class='ident'>k</span>[<span class='number'>11</span>] <span class='op'>+</span> <span class='ident'>w1</span>);
<span class='ident'>w2</span> <span class='op'>=</span> <span class='macro'>schedule</span><span class='macro'>!</span>(<span class='ident'>w3</span>, <span class='ident'>w4</span>, <span class='ident'>w0</span>, <span class='ident'>w1</span>);
<span class='macro'>rounds4</span><span class='macro'>!</span>(<span class='ident'>abef</span>, <span class='ident'>cdgh</span>, <span class='ident'>k</span>[<span class='number'>12</span>] <span class='op'>+</span> <span class='ident'>w2</span>);
<span class='ident'>w3</span> <span class='op'>=</span> <span class='macro'>schedule</span><span class='macro'>!</span>(<span class='ident'>w4</span>, <span class='ident'>w0</span>, <span class='ident'>w1</span>, <span class='ident'>w2</span>);
<span class='macro'>rounds4</span><span class='macro'>!</span>(<span class='ident'>abef</span>, <span class='ident'>cdgh</span>, <span class='ident'>k</span>[<span class='number'>13</span>] <span class='op'>+</span> <span class='ident'>w3</span>);
<span class='ident'>w4</span> <span class='op'>=</span> <span class='macro'>schedule</span><span class='macro'>!</span>(<span class='ident'>w0</span>, <span class='ident'>w1</span>, <span class='ident'>w2</span>, <span class='ident'>w3</span>);
<span class='macro'>rounds4</span><span class='macro'>!</span>(<span class='ident'>abef</span>, <span class='ident'>cdgh</span>, <span class='ident'>k</span>[<span class='number'>14</span>] <span class='op'>+</span> <span class='ident'>w4</span>);
<span class='ident'>w0</span> <span class='op'>=</span> <span class='macro'>schedule</span><span class='macro'>!</span>(<span class='ident'>w1</span>, <span class='ident'>w2</span>, <span class='ident'>w3</span>, <span class='ident'>w4</span>);
<span class='macro'>rounds4</span><span class='macro'>!</span>(<span class='ident'>abef</span>, <span class='ident'>cdgh</span>, <span class='ident'>k</span>[<span class='number'>15</span>] <span class='op'>+</span> <span class='ident'>w0</span>);
<span class='kw'>let</span> <span class='ident'>u32x4</span>(<span class='ident'>a</span>, <span class='ident'>b</span>, <span class='ident'>e</span>, <span class='ident'>f</span>) <span class='op'>=</span> <span class='ident'>abef</span>;
<span class='kw'>let</span> <span class='ident'>u32x4</span>(<span class='ident'>c</span>, <span class='ident'>d</span>, <span class='ident'>g</span>, <span class='ident'>h</span>) <span class='op'>=</span> <span class='ident'>cdgh</span>;
<span class='ident'>state</span>[<span class='number'>0</span>] <span class='op'>=</span> <span class='ident'>state</span>[<span class='number'>0</span>].<span class='ident'>wrapping_add</span>(<span class='ident'>a</span>);
<span class='ident'>state</span>[<span class='number'>1</span>] <span class='op'>=</span> <span class='ident'>state</span>[<span class='number'>1</span>].<span class='ident'>wrapping_add</span>(<span class='ident'>b</span>);
<span class='ident'>state</span>[<span class='number'>2</span>] <span class='op'>=</span> <span class='ident'>state</span>[<span class='number'>2</span>].<span class='ident'>wrapping_add</span>(<span class='ident'>c</span>);
<span class='ident'>state</span>[<span class='number'>3</span>] <span class='op'>=</span> <span class='ident'>state</span>[<span class='number'>3</span>].<span class='ident'>wrapping_add</span>(<span class='ident'>d</span>);
<span class='ident'>state</span>[<span class='number'>4</span>] <span class='op'>=</span> <span class='ident'>state</span>[<span class='number'>4</span>].<span class='ident'>wrapping_add</span>(<span class='ident'>e</span>);
<span class='ident'>state</span>[<span class='number'>5</span>] <span class='op'>=</span> <span class='ident'>state</span>[<span class='number'>5</span>].<span class='ident'>wrapping_add</span>(<span class='ident'>f</span>);
<span class='ident'>state</span>[<span class='number'>6</span>] <span class='op'>=</span> <span class='ident'>state</span>[<span class='number'>6</span>].<span class='ident'>wrapping_add</span>(<span class='ident'>g</span>);
<span class='ident'>state</span>[<span class='number'>7</span>] <span class='op'>=</span> <span class='ident'>state</span>[<span class='number'>7</span>].<span class='ident'>wrapping_add</span>(<span class='ident'>h</span>);
}
<span class='doccomment'>/// Process a block with the SHA-256 algorithm. (See more...)</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// Internally, this uses functions which resemble the new Intel SHA instruction sets,</span>
<span class='doccomment'>/// and so it's data locality properties may improve performance. However, to benefit</span>
<span class='doccomment'>/// the most from this implementation, replace these functions with x86 intrinsics to</span>
<span class='doccomment'>/// get a possible speed boost.</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// # Implementation</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// The `Sha256` algorithm is implemented with functions that resemble the new</span>
<span class='doccomment'>/// Intel SHA instruction set extensions. These intructions fall into two categories:</span>
<span class='doccomment'>/// message schedule calculation, and the message block 64-round digest calculation.</span>
<span class='doccomment'>/// The schedule-related instructions allow 4 rounds to be calculated as:</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// ```ignore</span>
<span class='doccomment'>/// use std::simd::u32x4;</span>
<span class='doccomment'>/// use self::crypto::sha2::{</span>
<span class='doccomment'>/// sha256msg1,</span>
<span class='doccomment'>/// sha256msg2,</span>
<span class='doccomment'>/// sha256load</span>
<span class='doccomment'>/// };</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// fn schedule4_data(work: &mut [u32x4], w: &[u32]) {</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// // this is to illustrate the data order</span>
<span class='doccomment'>/// work[0] = u32x4(w[3], w[2], w[1], w[0]);</span>
<span class='doccomment'>/// work[1] = u32x4(w[7], w[6], w[5], w[4]);</span>
<span class='doccomment'>/// work[2] = u32x4(w[11], w[10], w[9], w[8]);</span>
<span class='doccomment'>/// work[3] = u32x4(w[15], w[14], w[13], w[12]);</span>
<span class='doccomment'>/// }</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// fn schedule4_work(work: &mut [u32x4], t: usize) {</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// // this is the core expression</span>
<span class='doccomment'>/// work[t] = sha256msg2(sha256msg1(work[t - 4], work[t - 3]) +</span>
<span class='doccomment'>/// sha256load(work[t - 2], work[t - 1]),</span>
<span class='doccomment'>/// work[t - 1])</span>
<span class='doccomment'>/// }</span>
<span class='doccomment'>/// ```</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// instead of 4 rounds of:</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// ```ignore</span>
<span class='doccomment'>/// fn schedule_work(w: &mut [u32], t: usize) {</span>
<span class='doccomment'>/// w[t] = sigma1!(w[t - 2]) + w[t - 7] + sigma0!(w[t - 15]) + w[t - 16];</span>
<span class='doccomment'>/// }</span>
<span class='doccomment'>/// ```</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// and the digest-related instructions allow 4 rounds to be calculated as:</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// ```ignore</span>
<span class='doccomment'>/// use std::simd::u32x4;</span>
<span class='doccomment'>/// use self::crypto::sha2::{K32X4,</span>
<span class='doccomment'>/// sha256rnds2,</span>
<span class='doccomment'>/// sha256swap</span>
<span class='doccomment'>/// };</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// fn rounds4(state: &mut [u32; 8], work: &mut [u32x4], t: usize) {</span>
<span class='doccomment'>/// let [a, b, c, d, e, f, g, h]: [u32; 8] = *state;</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// // this is to illustrate the data order</span>
<span class='doccomment'>/// let mut abef = u32x4(a, b, e, f);</span>
<span class='doccomment'>/// let mut cdgh = u32x4(c, d, g, h);</span>
<span class='doccomment'>/// let temp = K32X4[t] + work[t];</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// // this is the core expression</span>
<span class='doccomment'>/// cdgh = sha256rnds2(cdgh, abef, temp);</span>
<span class='doccomment'>/// abef = sha256rnds2(abef, cdgh, sha256swap(temp));</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// *state = [abef.0, abef.1, cdgh.0, cdgh.1,</span>
<span class='doccomment'>/// abef.2, abef.3, cdgh.2, cdgh.3];</span>
<span class='doccomment'>/// }</span>
<span class='doccomment'>/// ```</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// instead of 4 rounds of:</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// ```ignore</span>
<span class='doccomment'>/// fn round(state: &mut [u32; 8], w: &mut [u32], t: usize) {</span>
<span class='doccomment'>/// let [a, b, c, mut d, e, f, g, mut h]: [u32; 8] = *state;</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// h += big_sigma1!(e) + choose!(e, f, g) + K32[t] + w[t]; d += h;</span>
<span class='doccomment'>/// h += big_sigma0!(a) + majority!(a, b, c);</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// *state = [h, a, b, c, d, e, f, g];</span>
<span class='doccomment'>/// }</span>
<span class='doccomment'>/// ```</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// **NOTE**: It is important to note, however, that these instructions are not implemented</span>
<span class='doccomment'>/// by any CPU (at the time of this writing), and so they are emulated in this library</span>
<span class='doccomment'>/// until the instructions become more common, and gain support in LLVM (and GCC, etc.).</span>
<span class='doccomment'>///</span>
<span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>sha256_digest_block</span>(<span class='ident'>state</span>: <span class='kw-2'>&</span><span class='kw-2'>mut</span> [<span class='ident'>u32</span>; <span class='number'>8</span>], <span class='ident'>block</span>: <span class='kw-2'>&</span>[<span class='ident'>u8</span><span class='comment'>/*; 64*/</span>]) {
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>block</span>.<span class='ident'>len</span>(), <span class='ident'>BLOCK_LEN</span><span class='kw-2'>*</span><span class='number'>4</span>);
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>block2</span> <span class='op'>=</span> [<span class='number'>0u32</span>; <span class='ident'>BLOCK_LEN</span>];
<span class='ident'>read_u32v_be</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>block2</span>[..], <span class='ident'>block</span>);
<span class='ident'>sha256_digest_block_u32</span>(<span class='ident'>state</span>, <span class='kw-2'>&</span><span class='ident'>block2</span>);
}
<span class='doccomment'>/// Not an intrinsic, but works like an unaligned load.</span>
<span class='attribute'>#[<span class='ident'>inline</span>]</span>
<span class='kw'>fn</span> <span class='ident'>sha512load</span>(<span class='ident'>v0</span>: <span class='ident'>u64x2</span>, <span class='ident'>v1</span>: <span class='ident'>u64x2</span>) <span class='op'>-></span> <span class='ident'>u64x2</span> {
<span class='ident'>u64x2</span>(<span class='ident'>v1</span>.<span class='number'>1</span>, <span class='ident'>v0</span>.<span class='number'>0</span>)
}
<span class='doccomment'>/// Performs 2 rounds of the SHA-512 message schedule update.</span>
<span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>sha512_schedule_x2</span>(<span class='ident'>v0</span>: <span class='ident'>u64x2</span>, <span class='ident'>v1</span>: <span class='ident'>u64x2</span>, <span class='ident'>v4to5</span>: <span class='ident'>u64x2</span>, <span class='ident'>v7</span>: <span class='ident'>u64x2</span>) <span class='op'>-></span> <span class='ident'>u64x2</span> {
<span class='comment'>// sigma 0</span>
<span class='kw'>fn</span> <span class='ident'>sigma0</span>(<span class='ident'>x</span>: <span class='ident'>u64</span>) <span class='op'>-></span> <span class='ident'>u64</span> {
((<span class='ident'>x</span> <span class='op'><<</span> <span class='number'>63</span>) <span class='op'>|</span> (<span class='ident'>x</span> <span class='op'>>></span> <span class='number'>1</span>)) <span class='op'>^</span> ((<span class='ident'>x</span> <span class='op'><<</span> <span class='number'>56</span>) <span class='op'>|</span> (<span class='ident'>x</span> <span class='op'>>></span> <span class='number'>8</span>)) <span class='op'>^</span> (<span class='ident'>x</span> <span class='op'>>></span> <span class='number'>7</span>)
}
<span class='comment'>// sigma 1</span>
<span class='kw'>fn</span> <span class='ident'>sigma1</span>(<span class='ident'>x</span>: <span class='ident'>u64</span>) <span class='op'>-></span> <span class='ident'>u64</span> {
((<span class='ident'>x</span> <span class='op'><<</span> <span class='number'>45</span>) <span class='op'>|</span> (<span class='ident'>x</span> <span class='op'>>></span> <span class='number'>19</span>)) <span class='op'>^</span> ((<span class='ident'>x</span> <span class='op'><<</span> <span class='number'>3</span>) <span class='op'>|</span> (<span class='ident'>x</span> <span class='op'>>></span> <span class='number'>61</span>)) <span class='op'>^</span> (<span class='ident'>x</span> <span class='op'>>></span> <span class='number'>6</span>)
}
<span class='kw'>let</span> <span class='ident'>u64x2</span>(<span class='ident'>w1</span>, <span class='ident'>w0</span>) <span class='op'>=</span> <span class='ident'>v0</span>;
<span class='kw'>let</span> <span class='ident'>u64x2</span>(_, <span class='ident'>w2</span>) <span class='op'>=</span> <span class='ident'>v1</span>;
<span class='kw'>let</span> <span class='ident'>u64x2</span>(<span class='ident'>w10</span>, <span class='ident'>w9</span>) <span class='op'>=</span> <span class='ident'>v4to5</span>;
<span class='kw'>let</span> <span class='ident'>u64x2</span>(<span class='ident'>w15</span>, <span class='ident'>w14</span>) <span class='op'>=</span> <span class='ident'>v7</span>;
<span class='kw'>let</span> <span class='ident'>w16</span> <span class='op'>=</span> <span class='ident'>sigma1</span>(<span class='ident'>w14</span>).<span class='ident'>wrapping_add</span>(<span class='ident'>w9</span>).<span class='ident'>wrapping_add</span>(<span class='ident'>sigma0</span>(<span class='ident'>w1</span>)).<span class='ident'>wrapping_add</span>(<span class='ident'>w0</span>);
<span class='kw'>let</span> <span class='ident'>w17</span> <span class='op'>=</span> <span class='ident'>sigma1</span>(<span class='ident'>w15</span>).<span class='ident'>wrapping_add</span>(<span class='ident'>w10</span>).<span class='ident'>wrapping_add</span>(<span class='ident'>sigma0</span>(<span class='ident'>w2</span>)).<span class='ident'>wrapping_add</span>(<span class='ident'>w1</span>);
<span class='ident'>u64x2</span>(<span class='ident'>w17</span>, <span class='ident'>w16</span>)
}
<span class='doccomment'>/// Performs one round of the SHA-512 message block digest.</span>
<span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>sha512_digest_round</span>(<span class='ident'>ae</span>: <span class='ident'>u64x2</span>, <span class='ident'>bf</span>: <span class='ident'>u64x2</span>, <span class='ident'>cg</span>: <span class='ident'>u64x2</span>, <span class='ident'>dh</span>: <span class='ident'>u64x2</span>, <span class='ident'>wk0</span>: <span class='ident'>u64</span>) <span class='op'>-></span> <span class='ident'>u64x2</span> {
<span class='macro'>macro_rules</span><span class='macro'>!</span> <span class='ident'>big_sigma0</span> {
(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>a</span>:<span class='ident'>expr</span>) <span class='op'>=></span> ((<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>a</span>.<span class='ident'>rotate_right</span>(<span class='number'>28</span>) <span class='op'>^</span> <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>a</span>.<span class='ident'>rotate_right</span>(<span class='number'>34</span>) <span class='op'>^</span> <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>a</span>.<span class='ident'>rotate_right</span>(<span class='number'>39</span>)))
}
<span class='macro'>macro_rules</span><span class='macro'>!</span> <span class='ident'>big_sigma1</span> {
(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>a</span>:<span class='ident'>expr</span>) <span class='op'>=></span> ((<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>a</span>.<span class='ident'>rotate_right</span>(<span class='number'>14</span>) <span class='op'>^</span> <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>a</span>.<span class='ident'>rotate_right</span>(<span class='number'>18</span>) <span class='op'>^</span> <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>a</span>.<span class='ident'>rotate_right</span>(<span class='number'>41</span>)))
}
<span class='macro'>macro_rules</span><span class='macro'>!</span> <span class='ident'>bool3ary_202</span> {
(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>a</span>:<span class='ident'>expr</span>, <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>b</span>:<span class='ident'>expr</span>, <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>c</span>:<span class='ident'>expr</span>) <span class='op'>=></span> ((<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>c</span> <span class='op'>^</span> (<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>a</span> <span class='op'>&</span> (<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>b</span> <span class='op'>^</span> <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>c</span>))))
} <span class='comment'>// Choose, MD5F, SHA1C</span>
<span class='macro'>macro_rules</span><span class='macro'>!</span> <span class='ident'>bool3ary_232</span> {
(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>a</span>:<span class='ident'>expr</span>, <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>b</span>:<span class='ident'>expr</span>, <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>c</span>:<span class='ident'>expr</span>) <span class='op'>=></span> ((<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>a</span> <span class='op'>&</span> <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>b</span>) <span class='op'>^</span> (<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>a</span> <span class='op'>&</span> <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>c</span>) <span class='op'>^</span> (<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>b</span> <span class='op'>&</span> <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>c</span>))
} <span class='comment'>// Majority, SHA1M</span>
<span class='kw'>let</span> <span class='ident'>u64x2</span>(<span class='ident'>a0</span>, <span class='ident'>e0</span>) <span class='op'>=</span> <span class='ident'>ae</span>;
<span class='kw'>let</span> <span class='ident'>u64x2</span>(<span class='ident'>b0</span>, <span class='ident'>f0</span>) <span class='op'>=</span> <span class='ident'>bf</span>;
<span class='kw'>let</span> <span class='ident'>u64x2</span>(<span class='ident'>c0</span>, <span class='ident'>g0</span>) <span class='op'>=</span> <span class='ident'>cg</span>;
<span class='kw'>let</span> <span class='ident'>u64x2</span>(<span class='ident'>d0</span>, <span class='ident'>h0</span>) <span class='op'>=</span> <span class='ident'>dh</span>;
<span class='comment'>// a round</span>
<span class='kw'>let</span> <span class='ident'>x0</span> <span class='op'>=</span> <span class='macro'>big_sigma1</span><span class='macro'>!</span>(<span class='ident'>e0</span>).<span class='ident'>wrapping_add</span>(<span class='macro'>bool3ary_202</span><span class='macro'>!</span>(<span class='ident'>e0</span>, <span class='ident'>f0</span>, <span class='ident'>g0</span>)).<span class='ident'>wrapping_add</span>(<span class='ident'>wk0</span>).<span class='ident'>wrapping_add</span>(<span class='ident'>h0</span>);
<span class='kw'>let</span> <span class='ident'>y0</span> <span class='op'>=</span> <span class='macro'>big_sigma0</span><span class='macro'>!</span>(<span class='ident'>a0</span>).<span class='ident'>wrapping_add</span>(<span class='macro'>bool3ary_232</span><span class='macro'>!</span>(<span class='ident'>a0</span>, <span class='ident'>b0</span>, <span class='ident'>c0</span>));
<span class='kw'>let</span> (<span class='ident'>a1</span>, _, _, _, <span class='ident'>e1</span>, _, _, _) <span class='op'>=</span> (
<span class='ident'>x0</span>.<span class='ident'>wrapping_add</span>(<span class='ident'>y0</span>), <span class='ident'>a0</span>, <span class='ident'>b0</span>, <span class='ident'>c0</span>,
<span class='ident'>x0</span>.<span class='ident'>wrapping_add</span>(<span class='ident'>d0</span>), <span class='ident'>e0</span>, <span class='ident'>f0</span>, <span class='ident'>g0</span>);
<span class='ident'>u64x2</span>(<span class='ident'>a1</span>, <span class='ident'>e1</span>)
}
<span class='doccomment'>/// Process a block with the SHA-512 algorithm.</span>
<span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>sha512_digest_block_u64</span>(<span class='ident'>state</span>: <span class='kw-2'>&</span><span class='kw-2'>mut</span> [<span class='ident'>u64</span>; <span class='number'>8</span>], <span class='ident'>block</span>: <span class='kw-2'>&</span>[<span class='ident'>u64</span>; <span class='number'>16</span>]) {
<span class='kw'>let</span> <span class='ident'>k</span> <span class='op'>=</span> <span class='kw-2'>&</span><span class='ident'>K64X2</span>;
<span class='macro'>macro_rules</span><span class='macro'>!</span> <span class='ident'>schedule</span> {
(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>v0</span>:<span class='ident'>expr</span>, <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>v1</span>:<span class='ident'>expr</span>, <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>v4</span>:<span class='ident'>expr</span>, <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>v5</span>:<span class='ident'>expr</span>, <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>v7</span>:<span class='ident'>expr</span>) <span class='op'>=></span> (
<span class='ident'>sha512_schedule_x2</span>(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>v0</span>, <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>v1</span>, <span class='ident'>sha512load</span>(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>v4</span>, <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>v5</span>), <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>v7</span>)
)
}
<span class='macro'>macro_rules</span><span class='macro'>!</span> <span class='ident'>rounds4</span> {
(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>ae</span>:<span class='ident'>ident</span>, <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>bf</span>:<span class='ident'>ident</span>, <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>cg</span>:<span class='ident'>ident</span>, <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>dh</span>:<span class='ident'>ident</span>, <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>wk0</span>:<span class='ident'>expr</span>, <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>wk1</span>:<span class='ident'>expr</span>) <span class='op'>=></span> {
{
<span class='kw'>let</span> <span class='ident'>u64x2</span>(<span class='ident'>u</span>, <span class='ident'>t</span>) <span class='op'>=</span> <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>wk0</span>;
<span class='kw'>let</span> <span class='ident'>u64x2</span>(<span class='ident'>w</span>, <span class='ident'>v</span>) <span class='op'>=</span> <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>wk1</span>;
<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>dh</span> <span class='op'>=</span> <span class='ident'>sha512_digest_round</span>(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>ae</span>, <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>bf</span>, <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>cg</span>, <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>dh</span>, <span class='ident'>t</span>);
<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>cg</span> <span class='op'>=</span> <span class='ident'>sha512_digest_round</span>(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>dh</span>, <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>ae</span>, <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>bf</span>, <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>cg</span>, <span class='ident'>u</span>);
<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>bf</span> <span class='op'>=</span> <span class='ident'>sha512_digest_round</span>(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>cg</span>, <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>dh</span>, <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>ae</span>, <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>bf</span>, <span class='ident'>v</span>);
<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>ae</span> <span class='op'>=</span> <span class='ident'>sha512_digest_round</span>(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>bf</span>, <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>cg</span>, <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>dh</span>, <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>ae</span>, <span class='ident'>w</span>);
}
}
}
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>ae</span> <span class='op'>=</span> <span class='ident'>u64x2</span>(<span class='ident'>state</span>[<span class='number'>0</span>],
<span class='ident'>state</span>[<span class='number'>4</span>]);
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>bf</span> <span class='op'>=</span> <span class='ident'>u64x2</span>(<span class='ident'>state</span>[<span class='number'>1</span>],
<span class='ident'>state</span>[<span class='number'>5</span>]);
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>cg</span> <span class='op'>=</span> <span class='ident'>u64x2</span>(<span class='ident'>state</span>[<span class='number'>2</span>],
<span class='ident'>state</span>[<span class='number'>6</span>]);
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>dh</span> <span class='op'>=</span> <span class='ident'>u64x2</span>(<span class='ident'>state</span>[<span class='number'>3</span>],
<span class='ident'>state</span>[<span class='number'>7</span>]);
<span class='comment'>// Rounds 0..20</span>
<span class='kw'>let</span> (<span class='kw-2'>mut</span> <span class='ident'>w1</span>, <span class='kw-2'>mut</span> <span class='ident'>w0</span>) <span class='op'>=</span> (<span class='ident'>u64x2</span>(<span class='ident'>block</span>[<span class='number'>3</span>],
<span class='ident'>block</span>[<span class='number'>2</span>]),
<span class='ident'>u64x2</span>(<span class='ident'>block</span>[<span class='number'>1</span>],
<span class='ident'>block</span>[<span class='number'>0</span>]));
<span class='macro'>rounds4</span><span class='macro'>!</span>(<span class='ident'>ae</span>, <span class='ident'>bf</span>, <span class='ident'>cg</span>, <span class='ident'>dh</span>, <span class='ident'>k</span>[<span class='number'>0</span>] <span class='op'>+</span> <span class='ident'>w0</span>, <span class='ident'>k</span>[<span class='number'>1</span>] <span class='op'>+</span> <span class='ident'>w1</span>);
<span class='kw'>let</span> (<span class='kw-2'>mut</span> <span class='ident'>w3</span>, <span class='kw-2'>mut</span> <span class='ident'>w2</span>) <span class='op'>=</span> (<span class='ident'>u64x2</span>(<span class='ident'>block</span>[<span class='number'>7</span>],
<span class='ident'>block</span>[<span class='number'>6</span>]),
<span class='ident'>u64x2</span>(<span class='ident'>block</span>[<span class='number'>5</span>],
<span class='ident'>block</span>[<span class='number'>4</span>]));
<span class='macro'>rounds4</span><span class='macro'>!</span>(<span class='ident'>ae</span>, <span class='ident'>bf</span>, <span class='ident'>cg</span>, <span class='ident'>dh</span>, <span class='ident'>k</span>[<span class='number'>2</span>] <span class='op'>+</span> <span class='ident'>w2</span>, <span class='ident'>k</span>[<span class='number'>3</span>] <span class='op'>+</span> <span class='ident'>w3</span>);
<span class='kw'>let</span> (<span class='kw-2'>mut</span> <span class='ident'>w5</span>, <span class='kw-2'>mut</span> <span class='ident'>w4</span>) <span class='op'>=</span> (<span class='ident'>u64x2</span>(<span class='ident'>block</span>[<span class='number'>11</span>],
<span class='ident'>block</span>[<span class='number'>10</span>]),
<span class='ident'>u64x2</span>(<span class='ident'>block</span>[<span class='number'>9</span>],
<span class='ident'>block</span>[<span class='number'>8</span>]));
<span class='macro'>rounds4</span><span class='macro'>!</span>(<span class='ident'>ae</span>, <span class='ident'>bf</span>, <span class='ident'>cg</span>, <span class='ident'>dh</span>, <span class='ident'>k</span>[<span class='number'>4</span>] <span class='op'>+</span> <span class='ident'>w4</span>, <span class='ident'>k</span>[<span class='number'>5</span>] <span class='op'>+</span> <span class='ident'>w5</span>);
<span class='kw'>let</span> (<span class='kw-2'>mut</span> <span class='ident'>w7</span>, <span class='kw-2'>mut</span> <span class='ident'>w6</span>) <span class='op'>=</span> (<span class='ident'>u64x2</span>(<span class='ident'>block</span>[<span class='number'>15</span>],
<span class='ident'>block</span>[<span class='number'>14</span>]),
<span class='ident'>u64x2</span>(<span class='ident'>block</span>[<span class='number'>13</span>],
<span class='ident'>block</span>[<span class='number'>12</span>]));
<span class='macro'>rounds4</span><span class='macro'>!</span>(<span class='ident'>ae</span>, <span class='ident'>bf</span>, <span class='ident'>cg</span>, <span class='ident'>dh</span>, <span class='ident'>k</span>[<span class='number'>6</span>] <span class='op'>+</span> <span class='ident'>w6</span>, <span class='ident'>k</span>[<span class='number'>7</span>] <span class='op'>+</span> <span class='ident'>w7</span>);
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>w8</span> <span class='op'>=</span> <span class='macro'>schedule</span><span class='macro'>!</span>(<span class='ident'>w0</span>, <span class='ident'>w1</span>, <span class='ident'>w4</span>, <span class='ident'>w5</span>, <span class='ident'>w7</span>);
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>w9</span> <span class='op'>=</span> <span class='macro'>schedule</span><span class='macro'>!</span>(<span class='ident'>w1</span>, <span class='ident'>w2</span>, <span class='ident'>w5</span>, <span class='ident'>w6</span>, <span class='ident'>w8</span>);
<span class='macro'>rounds4</span><span class='macro'>!</span>(<span class='ident'>ae</span>, <span class='ident'>bf</span>, <span class='ident'>cg</span>, <span class='ident'>dh</span>, <span class='ident'>k</span>[<span class='number'>8</span>] <span class='op'>+</span> <span class='ident'>w8</span>, <span class='ident'>k</span>[<span class='number'>9</span>] <span class='op'>+</span> <span class='ident'>w9</span>);
<span class='comment'>// Rounds 20..40</span>
<span class='ident'>w0</span> <span class='op'>=</span> <span class='macro'>schedule</span><span class='macro'>!</span>(<span class='ident'>w2</span>, <span class='ident'>w3</span>, <span class='ident'>w6</span>, <span class='ident'>w7</span>, <span class='ident'>w9</span>);
<span class='ident'>w1</span> <span class='op'>=</span> <span class='macro'>schedule</span><span class='macro'>!</span>(<span class='ident'>w3</span>, <span class='ident'>w4</span>, <span class='ident'>w7</span>, <span class='ident'>w8</span>, <span class='ident'>w0</span>);
<span class='macro'>rounds4</span><span class='macro'>!</span>(<span class='ident'>ae</span>, <span class='ident'>bf</span>, <span class='ident'>cg</span>, <span class='ident'>dh</span>, <span class='ident'>k</span>[<span class='number'>10</span>] <span class='op'>+</span> <span class='ident'>w0</span>, <span class='ident'>k</span>[<span class='number'>11</span>] <span class='op'>+</span> <span class='ident'>w1</span>);
<span class='ident'>w2</span> <span class='op'>=</span> <span class='macro'>schedule</span><span class='macro'>!</span>(<span class='ident'>w4</span>, <span class='ident'>w5</span>, <span class='ident'>w8</span>, <span class='ident'>w9</span>, <span class='ident'>w1</span>);
<span class='ident'>w3</span> <span class='op'>=</span> <span class='macro'>schedule</span><span class='macro'>!</span>(<span class='ident'>w5</span>, <span class='ident'>w6</span>, <span class='ident'>w9</span>, <span class='ident'>w0</span>, <span class='ident'>w2</span>);
<span class='macro'>rounds4</span><span class='macro'>!</span>(<span class='ident'>ae</span>, <span class='ident'>bf</span>, <span class='ident'>cg</span>, <span class='ident'>dh</span>, <span class='ident'>k</span>[<span class='number'>12</span>] <span class='op'>+</span> <span class='ident'>w2</span>, <span class='ident'>k</span>[<span class='number'>13</span>] <span class='op'>+</span> <span class='ident'>w3</span>);
<span class='ident'>w4</span> <span class='op'>=</span> <span class='macro'>schedule</span><span class='macro'>!</span>(<span class='ident'>w6</span>, <span class='ident'>w7</span>, <span class='ident'>w0</span>, <span class='ident'>w1</span>, <span class='ident'>w3</span>);
<span class='ident'>w5</span> <span class='op'>=</span> <span class='macro'>schedule</span><span class='macro'>!</span>(<span class='ident'>w7</span>, <span class='ident'>w8</span>, <span class='ident'>w1</span>, <span class='ident'>w2</span>, <span class='ident'>w4</span>);
<span class='macro'>rounds4</span><span class='macro'>!</span>(<span class='ident'>ae</span>, <span class='ident'>bf</span>, <span class='ident'>cg</span>, <span class='ident'>dh</span>, <span class='ident'>k</span>[<span class='number'>14</span>] <span class='op'>+</span> <span class='ident'>w4</span>, <span class='ident'>k</span>[<span class='number'>15</span>] <span class='op'>+</span> <span class='ident'>w5</span>);
<span class='ident'>w6</span> <span class='op'>=</span> <span class='macro'>schedule</span><span class='macro'>!</span>(<span class='ident'>w8</span>, <span class='ident'>w9</span>, <span class='ident'>w2</span>, <span class='ident'>w3</span>, <span class='ident'>w5</span>);
<span class='ident'>w7</span> <span class='op'>=</span> <span class='macro'>schedule</span><span class='macro'>!</span>(<span class='ident'>w9</span>, <span class='ident'>w0</span>, <span class='ident'>w3</span>, <span class='ident'>w4</span>, <span class='ident'>w6</span>);
<span class='macro'>rounds4</span><span class='macro'>!</span>(<span class='ident'>ae</span>, <span class='ident'>bf</span>, <span class='ident'>cg</span>, <span class='ident'>dh</span>, <span class='ident'>k</span>[<span class='number'>16</span>] <span class='op'>+</span> <span class='ident'>w6</span>, <span class='ident'>k</span>[<span class='number'>17</span>] <span class='op'>+</span> <span class='ident'>w7</span>);
<span class='ident'>w8</span> <span class='op'>=</span> <span class='macro'>schedule</span><span class='macro'>!</span>(<span class='ident'>w0</span>, <span class='ident'>w1</span>, <span class='ident'>w4</span>, <span class='ident'>w5</span>, <span class='ident'>w7</span>);
<span class='ident'>w9</span> <span class='op'>=</span> <span class='macro'>schedule</span><span class='macro'>!</span>(<span class='ident'>w1</span>, <span class='ident'>w2</span>, <span class='ident'>w5</span>, <span class='ident'>w6</span>, <span class='ident'>w8</span>);
<span class='macro'>rounds4</span><span class='macro'>!</span>(<span class='ident'>ae</span>, <span class='ident'>bf</span>, <span class='ident'>cg</span>, <span class='ident'>dh</span>, <span class='ident'>k</span>[<span class='number'>18</span>] <span class='op'>+</span> <span class='ident'>w8</span>, <span class='ident'>k</span>[<span class='number'>19</span>] <span class='op'>+</span> <span class='ident'>w9</span>);
<span class='comment'>// Rounds 40..60</span>
<span class='ident'>w0</span> <span class='op'>=</span> <span class='macro'>schedule</span><span class='macro'>!</span>(<span class='ident'>w2</span>, <span class='ident'>w3</span>, <span class='ident'>w6</span>, <span class='ident'>w7</span>, <span class='ident'>w9</span>);
<span class='ident'>w1</span> <span class='op'>=</span> <span class='macro'>schedule</span><span class='macro'>!</span>(<span class='ident'>w3</span>, <span class='ident'>w4</span>, <span class='ident'>w7</span>, <span class='ident'>w8</span>, <span class='ident'>w0</span>);
<span class='macro'>rounds4</span><span class='macro'>!</span>(<span class='ident'>ae</span>, <span class='ident'>bf</span>, <span class='ident'>cg</span>, <span class='ident'>dh</span>, <span class='ident'>k</span>[<span class='number'>20</span>] <span class='op'>+</span> <span class='ident'>w0</span>, <span class='ident'>k</span>[<span class='number'>21</span>] <span class='op'>+</span> <span class='ident'>w1</span>);
<span class='ident'>w2</span> <span class='op'>=</span> <span class='macro'>schedule</span><span class='macro'>!</span>(<span class='ident'>w4</span>, <span class='ident'>w5</span>, <span class='ident'>w8</span>, <span class='ident'>w9</span>, <span class='ident'>w1</span>);
<span class='ident'>w3</span> <span class='op'>=</span> <span class='macro'>schedule</span><span class='macro'>!</span>(<span class='ident'>w5</span>, <span class='ident'>w6</span>, <span class='ident'>w9</span>, <span class='ident'>w0</span>, <span class='ident'>w2</span>);
<span class='macro'>rounds4</span><span class='macro'>!</span>(<span class='ident'>ae</span>, <span class='ident'>bf</span>, <span class='ident'>cg</span>, <span class='ident'>dh</span>, <span class='ident'>k</span>[<span class='number'>22</span>] <span class='op'>+</span> <span class='ident'>w2</span>, <span class='ident'>k</span>[<span class='number'>23</span>] <span class='op'>+</span> <span class='ident'>w3</span>);
<span class='ident'>w4</span> <span class='op'>=</span> <span class='macro'>schedule</span><span class='macro'>!</span>(<span class='ident'>w6</span>, <span class='ident'>w7</span>, <span class='ident'>w0</span>, <span class='ident'>w1</span>, <span class='ident'>w3</span>);
<span class='ident'>w5</span> <span class='op'>=</span> <span class='macro'>schedule</span><span class='macro'>!</span>(<span class='ident'>w7</span>, <span class='ident'>w8</span>, <span class='ident'>w1</span>, <span class='ident'>w2</span>, <span class='ident'>w4</span>);
<span class='macro'>rounds4</span><span class='macro'>!</span>(<span class='ident'>ae</span>, <span class='ident'>bf</span>, <span class='ident'>cg</span>, <span class='ident'>dh</span>, <span class='ident'>k</span>[<span class='number'>24</span>] <span class='op'>+</span> <span class='ident'>w4</span>, <span class='ident'>k</span>[<span class='number'>25</span>] <span class='op'>+</span> <span class='ident'>w5</span>);
<span class='ident'>w6</span> <span class='op'>=</span> <span class='macro'>schedule</span><span class='macro'>!</span>(<span class='ident'>w8</span>, <span class='ident'>w9</span>, <span class='ident'>w2</span>, <span class='ident'>w3</span>, <span class='ident'>w5</span>);
<span class='ident'>w7</span> <span class='op'>=</span> <span class='macro'>schedule</span><span class='macro'>!</span>(<span class='ident'>w9</span>, <span class='ident'>w0</span>, <span class='ident'>w3</span>, <span class='ident'>w4</span>, <span class='ident'>w6</span>);
<span class='macro'>rounds4</span><span class='macro'>!</span>(<span class='ident'>ae</span>, <span class='ident'>bf</span>, <span class='ident'>cg</span>, <span class='ident'>dh</span>, <span class='ident'>k</span>[<span class='number'>26</span>] <span class='op'>+</span> <span class='ident'>w6</span>, <span class='ident'>k</span>[<span class='number'>27</span>] <span class='op'>+</span> <span class='ident'>w7</span>);
<span class='ident'>w8</span> <span class='op'>=</span> <span class='macro'>schedule</span><span class='macro'>!</span>(<span class='ident'>w0</span>, <span class='ident'>w1</span>, <span class='ident'>w4</span>, <span class='ident'>w5</span>, <span class='ident'>w7</span>);
<span class='ident'>w9</span> <span class='op'>=</span> <span class='macro'>schedule</span><span class='macro'>!</span>(<span class='ident'>w1</span>, <span class='ident'>w2</span>, <span class='ident'>w5</span>, <span class='ident'>w6</span>, <span class='ident'>w8</span>);
<span class='macro'>rounds4</span><span class='macro'>!</span>(<span class='ident'>ae</span>, <span class='ident'>bf</span>, <span class='ident'>cg</span>, <span class='ident'>dh</span>, <span class='ident'>k</span>[<span class='number'>28</span>] <span class='op'>+</span> <span class='ident'>w8</span>, <span class='ident'>k</span>[<span class='number'>29</span>] <span class='op'>+</span> <span class='ident'>w9</span>);
<span class='comment'>// Rounds 60..80</span>
<span class='ident'>w0</span> <span class='op'>=</span> <span class='macro'>schedule</span><span class='macro'>!</span>(<span class='ident'>w2</span>, <span class='ident'>w3</span>, <span class='ident'>w6</span>, <span class='ident'>w7</span>, <span class='ident'>w9</span>);
<span class='ident'>w1</span> <span class='op'>=</span> <span class='macro'>schedule</span><span class='macro'>!</span>(<span class='ident'>w3</span>, <span class='ident'>w4</span>, <span class='ident'>w7</span>, <span class='ident'>w8</span>, <span class='ident'>w0</span>);
<span class='macro'>rounds4</span><span class='macro'>!</span>(<span class='ident'>ae</span>, <span class='ident'>bf</span>, <span class='ident'>cg</span>, <span class='ident'>dh</span>, <span class='ident'>k</span>[<span class='number'>30</span>] <span class='op'>+</span> <span class='ident'>w0</span>, <span class='ident'>k</span>[<span class='number'>31</span>] <span class='op'>+</span> <span class='ident'>w1</span>);
<span class='ident'>w2</span> <span class='op'>=</span> <span class='macro'>schedule</span><span class='macro'>!</span>(<span class='ident'>w4</span>, <span class='ident'>w5</span>, <span class='ident'>w8</span>, <span class='ident'>w9</span>, <span class='ident'>w1</span>);
<span class='ident'>w3</span> <span class='op'>=</span> <span class='macro'>schedule</span><span class='macro'>!</span>(<span class='ident'>w5</span>, <span class='ident'>w6</span>, <span class='ident'>w9</span>, <span class='ident'>w0</span>, <span class='ident'>w2</span>);
<span class='macro'>rounds4</span><span class='macro'>!</span>(<span class='ident'>ae</span>, <span class='ident'>bf</span>, <span class='ident'>cg</span>, <span class='ident'>dh</span>, <span class='ident'>k</span>[<span class='number'>32</span>] <span class='op'>+</span> <span class='ident'>w2</span>, <span class='ident'>k</span>[<span class='number'>33</span>] <span class='op'>+</span> <span class='ident'>w3</span>);
<span class='ident'>w4</span> <span class='op'>=</span> <span class='macro'>schedule</span><span class='macro'>!</span>(<span class='ident'>w6</span>, <span class='ident'>w7</span>, <span class='ident'>w0</span>, <span class='ident'>w1</span>, <span class='ident'>w3</span>);
<span class='ident'>w5</span> <span class='op'>=</span> <span class='macro'>schedule</span><span class='macro'>!</span>(<span class='ident'>w7</span>, <span class='ident'>w8</span>, <span class='ident'>w1</span>, <span class='ident'>w2</span>, <span class='ident'>w4</span>);
<span class='macro'>rounds4</span><span class='macro'>!</span>(<span class='ident'>ae</span>, <span class='ident'>bf</span>, <span class='ident'>cg</span>, <span class='ident'>dh</span>, <span class='ident'>k</span>[<span class='number'>34</span>] <span class='op'>+</span> <span class='ident'>w4</span>, <span class='ident'>k</span>[<span class='number'>35</span>] <span class='op'>+</span> <span class='ident'>w5</span>);
<span class='ident'>w6</span> <span class='op'>=</span> <span class='macro'>schedule</span><span class='macro'>!</span>(<span class='ident'>w8</span>, <span class='ident'>w9</span>, <span class='ident'>w2</span>, <span class='ident'>w3</span>, <span class='ident'>w5</span>);
<span class='ident'>w7</span> <span class='op'>=</span> <span class='macro'>schedule</span><span class='macro'>!</span>(<span class='ident'>w9</span>, <span class='ident'>w0</span>, <span class='ident'>w3</span>, <span class='ident'>w4</span>, <span class='ident'>w6</span>);
<span class='macro'>rounds4</span><span class='macro'>!</span>(<span class='ident'>ae</span>, <span class='ident'>bf</span>, <span class='ident'>cg</span>, <span class='ident'>dh</span>, <span class='ident'>k</span>[<span class='number'>36</span>] <span class='op'>+</span> <span class='ident'>w6</span>, <span class='ident'>k</span>[<span class='number'>37</span>] <span class='op'>+</span> <span class='ident'>w7</span>);
<span class='ident'>w8</span> <span class='op'>=</span> <span class='macro'>schedule</span><span class='macro'>!</span>(<span class='ident'>w0</span>, <span class='ident'>w1</span>, <span class='ident'>w4</span>, <span class='ident'>w5</span>, <span class='ident'>w7</span>);
<span class='ident'>w9</span> <span class='op'>=</span> <span class='macro'>schedule</span><span class='macro'>!</span>(<span class='ident'>w1</span>, <span class='ident'>w2</span>, <span class='ident'>w5</span>, <span class='ident'>w6</span>, <span class='ident'>w8</span>);
<span class='macro'>rounds4</span><span class='macro'>!</span>(<span class='ident'>ae</span>, <span class='ident'>bf</span>, <span class='ident'>cg</span>, <span class='ident'>dh</span>, <span class='ident'>k</span>[<span class='number'>38</span>] <span class='op'>+</span> <span class='ident'>w8</span>, <span class='ident'>k</span>[<span class='number'>39</span>] <span class='op'>+</span> <span class='ident'>w9</span>);
<span class='kw'>let</span> <span class='ident'>u64x2</span>(<span class='ident'>a</span>, <span class='ident'>e</span>) <span class='op'>=</span> <span class='ident'>ae</span>;
<span class='kw'>let</span> <span class='ident'>u64x2</span>(<span class='ident'>b</span>, <span class='ident'>f</span>) <span class='op'>=</span> <span class='ident'>bf</span>;
<span class='kw'>let</span> <span class='ident'>u64x2</span>(<span class='ident'>c</span>, <span class='ident'>g</span>) <span class='op'>=</span> <span class='ident'>cg</span>;
<span class='kw'>let</span> <span class='ident'>u64x2</span>(<span class='ident'>d</span>, <span class='ident'>h</span>) <span class='op'>=</span> <span class='ident'>dh</span>;
<span class='ident'>state</span>[<span class='number'>0</span>] <span class='op'>=</span> <span class='ident'>state</span>[<span class='number'>0</span>].<span class='ident'>wrapping_add</span>(<span class='ident'>a</span>);
<span class='ident'>state</span>[<span class='number'>1</span>] <span class='op'>=</span> <span class='ident'>state</span>[<span class='number'>1</span>].<span class='ident'>wrapping_add</span>(<span class='ident'>b</span>);
<span class='ident'>state</span>[<span class='number'>2</span>] <span class='op'>=</span> <span class='ident'>state</span>[<span class='number'>2</span>].<span class='ident'>wrapping_add</span>(<span class='ident'>c</span>);
<span class='ident'>state</span>[<span class='number'>3</span>] <span class='op'>=</span> <span class='ident'>state</span>[<span class='number'>3</span>].<span class='ident'>wrapping_add</span>(<span class='ident'>d</span>);
<span class='ident'>state</span>[<span class='number'>4</span>] <span class='op'>=</span> <span class='ident'>state</span>[<span class='number'>4</span>].<span class='ident'>wrapping_add</span>(<span class='ident'>e</span>);
<span class='ident'>state</span>[<span class='number'>5</span>] <span class='op'>=</span> <span class='ident'>state</span>[<span class='number'>5</span>].<span class='ident'>wrapping_add</span>(<span class='ident'>f</span>);
<span class='ident'>state</span>[<span class='number'>6</span>] <span class='op'>=</span> <span class='ident'>state</span>[<span class='number'>6</span>].<span class='ident'>wrapping_add</span>(<span class='ident'>g</span>);
<span class='ident'>state</span>[<span class='number'>7</span>] <span class='op'>=</span> <span class='ident'>state</span>[<span class='number'>7</span>].<span class='ident'>wrapping_add</span>(<span class='ident'>h</span>);
}
<span class='doccomment'>/// Process a block with the SHA-512 algorithm. (See more...)</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// Internally, this uses functions that resemble the new Intel SHA</span>
<span class='doccomment'>/// instruction set extensions, but since no architecture seems to</span>
<span class='doccomment'>/// have any designs, these may not be the final designs if and/or when</span>
<span class='doccomment'>/// there are instruction set extensions with SHA-512. So to summarize:</span>
<span class='doccomment'>/// SHA-1 and SHA-256 are being implemented in hardware soon (at the time</span>
<span class='doccomment'>/// of this writing), but it doesn't look like SHA-512 will be hardware</span>
<span class='doccomment'>/// accelerated any time soon.</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// # Implementation</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// These functions fall into two categories:</span>
<span class='doccomment'>/// message schedule calculation, and the message block 64-round digest calculation.</span>
<span class='doccomment'>/// The schedule-related functions allow 4 rounds to be calculated as:</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// ```ignore</span>
<span class='doccomment'>/// use std::simd::u64x2;</span>
<span class='doccomment'>/// use self::crypto::sha2::{</span>
<span class='doccomment'>/// sha512msg,</span>
<span class='doccomment'>/// sha512load</span>
<span class='doccomment'>/// };</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// fn schedule4_data(work: &mut [u64x2], w: &[u64]) {</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// // this is to illustrate the data order</span>
<span class='doccomment'>/// work[0] = u64x2(w[1], w[0]);</span>
<span class='doccomment'>/// work[1] = u64x2(w[3], w[2]);</span>
<span class='doccomment'>/// work[2] = u64x2(w[5], w[4]);</span>
<span class='doccomment'>/// work[3] = u64x2(w[7], w[6]);</span>
<span class='doccomment'>/// work[4] = u64x2(w[9], w[8]);</span>
<span class='doccomment'>/// work[5] = u64x2(w[11], w[10]);</span>
<span class='doccomment'>/// work[6] = u64x2(w[13], w[12]);</span>
<span class='doccomment'>/// work[7] = u64x2(w[15], w[14]);</span>
<span class='doccomment'>/// }</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// fn schedule4_work(work: &mut [u64x2], t: usize) {</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// // this is the core expression</span>
<span class='doccomment'>/// work[t] = sha512msg(work[t - 8],</span>
<span class='doccomment'>/// work[t - 7],</span>
<span class='doccomment'>/// sha512load(work[t - 4], work[t - 3]),</span>
<span class='doccomment'>/// work[t - 1]);</span>
<span class='doccomment'>/// }</span>
<span class='doccomment'>/// ```</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// instead of 4 rounds of:</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// ```ignore</span>
<span class='doccomment'>/// fn schedule_work(w: &mut [u64], t: usize) {</span>
<span class='doccomment'>/// w[t] = sigma1!(w[t - 2]) + w[t - 7] + sigma0!(w[t - 15]) + w[t - 16];</span>
<span class='doccomment'>/// }</span>
<span class='doccomment'>/// ```</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// and the digest-related functions allow 4 rounds to be calculated as:</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// ```ignore</span>
<span class='doccomment'>/// use std::simd::u64x2;</span>
<span class='doccomment'>/// use self::crypto::sha2::{K64X2, sha512rnd};</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// fn rounds4(state: &mut [u64; 8], work: &mut [u64x2], t: usize) {</span>
<span class='doccomment'>/// let [a, b, c, d, e, f, g, h]: [u64; 8] = *state;</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// // this is to illustrate the data order</span>
<span class='doccomment'>/// let mut ae = u64x2(a, e);</span>
<span class='doccomment'>/// let mut bf = u64x2(b, f);</span>
<span class='doccomment'>/// let mut cg = u64x2(c, g);</span>
<span class='doccomment'>/// let mut dh = u64x2(d, h);</span>
<span class='doccomment'>/// let u64x2(w1, w0) = K64X2[2*t] + work[2*t];</span>
<span class='doccomment'>/// let u64x2(w3, w2) = K64X2[2*t + 1] + work[2*t + 1];</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// // this is the core expression</span>
<span class='doccomment'>/// dh = sha512rnd(ae, bf, cg, dh, w0);</span>
<span class='doccomment'>/// cg = sha512rnd(dh, ae, bf, cg, w1);</span>
<span class='doccomment'>/// bf = sha512rnd(cg, dh, ae, bf, w2);</span>
<span class='doccomment'>/// ae = sha512rnd(bf, cg, dh, ae, w3);</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// *state = [ae.0, bf.0, cg.0, dh.0,</span>
<span class='doccomment'>/// ae.1, bf.1, cg.1, dh.1];</span>
<span class='doccomment'>/// }</span>
<span class='doccomment'>/// ```</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// instead of 4 rounds of:</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// ```ignore</span>
<span class='doccomment'>/// fn round(state: &mut [u64; 8], w: &mut [u64], t: usize) {</span>
<span class='doccomment'>/// let [a, b, c, mut d, e, f, g, mut h]: [u64; 8] = *state;</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// h += big_sigma1!(e) + choose!(e, f, g) + K64[t] + w[t]; d += h;</span>
<span class='doccomment'>/// h += big_sigma0!(a) + majority!(a, b, c);</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// *state = [h, a, b, c, d, e, f, g];</span>
<span class='doccomment'>/// }</span>
<span class='doccomment'>/// ```</span>
<span class='doccomment'>///</span>
<span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>sha512_digest_block</span>(<span class='ident'>state</span>: <span class='kw-2'>&</span><span class='kw-2'>mut</span> [<span class='ident'>u64</span>; <span class='number'>8</span>], <span class='ident'>block</span>: <span class='kw-2'>&</span>[<span class='ident'>u8</span><span class='comment'>/*; 128*/</span>]) {
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>block</span>.<span class='ident'>len</span>(), <span class='ident'>BLOCK_LEN</span><span class='kw-2'>*</span><span class='number'>8</span>);
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>block2</span> <span class='op'>=</span> [<span class='number'>0u64</span>; <span class='ident'>BLOCK_LEN</span>];
<span class='ident'>read_u64v_be</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>block2</span>[..], <span class='ident'>block</span>);
<span class='ident'>sha512_digest_block_u64</span>(<span class='ident'>state</span>, <span class='kw-2'>&</span><span class='ident'>block2</span>);
}
<span class='comment'>// A structure that represents that state of a digest computation for the SHA-2 512 family</span>
<span class='comment'>// of digest functions</span>
<span class='attribute'>#[<span class='ident'>derive</span>(<span class='ident'>Copy</span>, <span class='ident'>Clone</span>)]</span>
<span class='kw'>struct</span> <span class='ident'>Engine512State</span> {
<span class='ident'>h</span>: [<span class='ident'>u64</span>; <span class='number'>8</span>]
}
<span class='kw'>impl</span> <span class='ident'>Engine512State</span> {
<span class='kw'>fn</span> <span class='ident'>new</span>(<span class='ident'>h</span>: <span class='kw-2'>&</span>[<span class='ident'>u64</span>; <span class='number'>8</span>]) <span class='op'>-></span> <span class='ident'>Engine512State</span> {
<span class='ident'>Engine512State</span> {
<span class='ident'>h</span>: <span class='kw-2'>*</span><span class='ident'>h</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'>h</span>: <span class='kw-2'>&</span>[<span class='ident'>u64</span>; <span class='ident'>STATE_LEN</span>]) {
<span class='self'>self</span>.<span class='ident'>h</span> <span class='op'>=</span> <span class='kw-2'>*</span><span class='ident'>h</span>;
}
<span class='kw'>pub</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'>data</span>: <span class='kw-2'>&</span>[<span class='ident'>u8</span>]) {
<span class='ident'>sha512_digest_block</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>.<span class='ident'>h</span>, <span class='ident'>data</span>);
}
}
<span class='doccomment'>/// Constants necessary for SHA-512 family of digests.</span>
<span class='kw'>pub</span> <span class='kw'>const</span> <span class='ident'>K64</span>: [<span class='ident'>u64</span>; <span class='number'>80</span>] <span class='op'>=</span> [
<span class='number'>0x428a2f98d728ae22</span>, <span class='number'>0x7137449123ef65cd</span>, <span class='number'>0xb5c0fbcfec4d3b2f</span>, <span class='number'>0xe9b5dba58189dbbc</span>,
<span class='number'>0x3956c25bf348b538</span>, <span class='number'>0x59f111f1b605d019</span>, <span class='number'>0x923f82a4af194f9b</span>, <span class='number'>0xab1c5ed5da6d8118</span>,
<span class='number'>0xd807aa98a3030242</span>, <span class='number'>0x12835b0145706fbe</span>, <span class='number'>0x243185be4ee4b28c</span>, <span class='number'>0x550c7dc3d5ffb4e2</span>,
<span class='number'>0x72be5d74f27b896f</span>, <span class='number'>0x80deb1fe3b1696b1</span>, <span class='number'>0x9bdc06a725c71235</span>, <span class='number'>0xc19bf174cf692694</span>,
<span class='number'>0xe49b69c19ef14ad2</span>, <span class='number'>0xefbe4786384f25e3</span>, <span class='number'>0x0fc19dc68b8cd5b5</span>, <span class='number'>0x240ca1cc77ac9c65</span>,
<span class='number'>0x2de92c6f592b0275</span>, <span class='number'>0x4a7484aa6ea6e483</span>, <span class='number'>0x5cb0a9dcbd41fbd4</span>, <span class='number'>0x76f988da831153b5</span>,
<span class='number'>0x983e5152ee66dfab</span>, <span class='number'>0xa831c66d2db43210</span>, <span class='number'>0xb00327c898fb213f</span>, <span class='number'>0xbf597fc7beef0ee4</span>,
<span class='number'>0xc6e00bf33da88fc2</span>, <span class='number'>0xd5a79147930aa725</span>, <span class='number'>0x06ca6351e003826f</span>, <span class='number'>0x142929670a0e6e70</span>,
<span class='number'>0x27b70a8546d22ffc</span>, <span class='number'>0x2e1b21385c26c926</span>, <span class='number'>0x4d2c6dfc5ac42aed</span>, <span class='number'>0x53380d139d95b3df</span>,
<span class='number'>0x650a73548baf63de</span>, <span class='number'>0x766a0abb3c77b2a8</span>, <span class='number'>0x81c2c92e47edaee6</span>, <span class='number'>0x92722c851482353b</span>,
<span class='number'>0xa2bfe8a14cf10364</span>, <span class='number'>0xa81a664bbc423001</span>, <span class='number'>0xc24b8b70d0f89791</span>, <span class='number'>0xc76c51a30654be30</span>,
<span class='number'>0xd192e819d6ef5218</span>, <span class='number'>0xd69906245565a910</span>, <span class='number'>0xf40e35855771202a</span>, <span class='number'>0x106aa07032bbd1b8</span>,
<span class='number'>0x19a4c116b8d2d0c8</span>, <span class='number'>0x1e376c085141ab53</span>, <span class='number'>0x2748774cdf8eeb99</span>, <span class='number'>0x34b0bcb5e19b48a8</span>,
<span class='number'>0x391c0cb3c5c95a63</span>, <span class='number'>0x4ed8aa4ae3418acb</span>, <span class='number'>0x5b9cca4f7763e373</span>, <span class='number'>0x682e6ff3d6b2b8a3</span>,
<span class='number'>0x748f82ee5defb2fc</span>, <span class='number'>0x78a5636f43172f60</span>, <span class='number'>0x84c87814a1f0ab72</span>, <span class='number'>0x8cc702081a6439ec</span>,
<span class='number'>0x90befffa23631e28</span>, <span class='number'>0xa4506cebde82bde9</span>, <span class='number'>0xbef9a3f7b2c67915</span>, <span class='number'>0xc67178f2e372532b</span>,
<span class='number'>0xca273eceea26619c</span>, <span class='number'>0xd186b8c721c0c207</span>, <span class='number'>0xeada7dd6cde0eb1e</span>, <span class='number'>0xf57d4f7fee6ed178</span>,
<span class='number'>0x06f067aa72176fba</span>, <span class='number'>0x0a637dc5a2c898a6</span>, <span class='number'>0x113f9804bef90dae</span>, <span class='number'>0x1b710b35131c471b</span>,
<span class='number'>0x28db77f523047d84</span>, <span class='number'>0x32caab7b40c72493</span>, <span class='number'>0x3c9ebe0a15c9bebc</span>, <span class='number'>0x431d67c49c100d4c</span>,
<span class='number'>0x4cc5d4becb3e42b6</span>, <span class='number'>0x597f299cfc657e2a</span>, <span class='number'>0x5fcb6fab3ad6faec</span>, <span class='number'>0x6c44198c4a475817</span>
];
<span class='doccomment'>/// Constants necessary for SHA-512 family of digests.</span>
<span class='kw'>pub</span> <span class='kw'>const</span> <span class='ident'>K64X2</span>: [<span class='ident'>u64x2</span>; <span class='number'>40</span>] <span class='op'>=</span> [
<span class='ident'>u64x2</span>(<span class='ident'>K64</span>[<span class='number'>1</span>], <span class='ident'>K64</span>[<span class='number'>0</span>]), <span class='ident'>u64x2</span>(<span class='ident'>K64</span>[<span class='number'>3</span>], <span class='ident'>K64</span>[<span class='number'>2</span>]), <span class='ident'>u64x2</span>(<span class='ident'>K64</span>[<span class='number'>5</span>], <span class='ident'>K64</span>[<span class='number'>4</span>]), <span class='ident'>u64x2</span>(<span class='ident'>K64</span>[<span class='number'>7</span>], <span class='ident'>K64</span>[<span class='number'>6</span>]),
<span class='ident'>u64x2</span>(<span class='ident'>K64</span>[<span class='number'>9</span>], <span class='ident'>K64</span>[<span class='number'>8</span>]), <span class='ident'>u64x2</span>(<span class='ident'>K64</span>[<span class='number'>11</span>], <span class='ident'>K64</span>[<span class='number'>10</span>]), <span class='ident'>u64x2</span>(<span class='ident'>K64</span>[<span class='number'>13</span>], <span class='ident'>K64</span>[<span class='number'>12</span>]), <span class='ident'>u64x2</span>(<span class='ident'>K64</span>[<span class='number'>15</span>], <span class='ident'>K64</span>[<span class='number'>14</span>]),
<span class='ident'>u64x2</span>(<span class='ident'>K64</span>[<span class='number'>17</span>], <span class='ident'>K64</span>[<span class='number'>16</span>]), <span class='ident'>u64x2</span>(<span class='ident'>K64</span>[<span class='number'>19</span>], <span class='ident'>K64</span>[<span class='number'>18</span>]), <span class='ident'>u64x2</span>(<span class='ident'>K64</span>[<span class='number'>21</span>], <span class='ident'>K64</span>[<span class='number'>20</span>]), <span class='ident'>u64x2</span>(<span class='ident'>K64</span>[<span class='number'>23</span>], <span class='ident'>K64</span>[<span class='number'>22</span>]),
<span class='ident'>u64x2</span>(<span class='ident'>K64</span>[<span class='number'>25</span>], <span class='ident'>K64</span>[<span class='number'>24</span>]), <span class='ident'>u64x2</span>(<span class='ident'>K64</span>[<span class='number'>27</span>], <span class='ident'>K64</span>[<span class='number'>26</span>]), <span class='ident'>u64x2</span>(<span class='ident'>K64</span>[<span class='number'>29</span>], <span class='ident'>K64</span>[<span class='number'>28</span>]), <span class='ident'>u64x2</span>(<span class='ident'>K64</span>[<span class='number'>31</span>], <span class='ident'>K64</span>[<span class='number'>30</span>]),
<span class='ident'>u64x2</span>(<span class='ident'>K64</span>[<span class='number'>33</span>], <span class='ident'>K64</span>[<span class='number'>32</span>]), <span class='ident'>u64x2</span>(<span class='ident'>K64</span>[<span class='number'>35</span>], <span class='ident'>K64</span>[<span class='number'>34</span>]), <span class='ident'>u64x2</span>(<span class='ident'>K64</span>[<span class='number'>37</span>], <span class='ident'>K64</span>[<span class='number'>36</span>]), <span class='ident'>u64x2</span>(<span class='ident'>K64</span>[<span class='number'>39</span>], <span class='ident'>K64</span>[<span class='number'>38</span>]),
<span class='ident'>u64x2</span>(<span class='ident'>K64</span>[<span class='number'>41</span>], <span class='ident'>K64</span>[<span class='number'>40</span>]), <span class='ident'>u64x2</span>(<span class='ident'>K64</span>[<span class='number'>43</span>], <span class='ident'>K64</span>[<span class='number'>42</span>]), <span class='ident'>u64x2</span>(<span class='ident'>K64</span>[<span class='number'>45</span>], <span class='ident'>K64</span>[<span class='number'>44</span>]), <span class='ident'>u64x2</span>(<span class='ident'>K64</span>[<span class='number'>47</span>], <span class='ident'>K64</span>[<span class='number'>46</span>]),
<span class='ident'>u64x2</span>(<span class='ident'>K64</span>[<span class='number'>49</span>], <span class='ident'>K64</span>[<span class='number'>48</span>]), <span class='ident'>u64x2</span>(<span class='ident'>K64</span>[<span class='number'>51</span>], <span class='ident'>K64</span>[<span class='number'>50</span>]), <span class='ident'>u64x2</span>(<span class='ident'>K64</span>[<span class='number'>53</span>], <span class='ident'>K64</span>[<span class='number'>52</span>]), <span class='ident'>u64x2</span>(<span class='ident'>K64</span>[<span class='number'>55</span>], <span class='ident'>K64</span>[<span class='number'>54</span>]),
<span class='ident'>u64x2</span>(<span class='ident'>K64</span>[<span class='number'>57</span>], <span class='ident'>K64</span>[<span class='number'>56</span>]), <span class='ident'>u64x2</span>(<span class='ident'>K64</span>[<span class='number'>59</span>], <span class='ident'>K64</span>[<span class='number'>58</span>]), <span class='ident'>u64x2</span>(<span class='ident'>K64</span>[<span class='number'>61</span>], <span class='ident'>K64</span>[<span class='number'>60</span>]), <span class='ident'>u64x2</span>(<span class='ident'>K64</span>[<span class='number'>63</span>], <span class='ident'>K64</span>[<span class='number'>62</span>]),
<span class='ident'>u64x2</span>(<span class='ident'>K64</span>[<span class='number'>65</span>], <span class='ident'>K64</span>[<span class='number'>64</span>]), <span class='ident'>u64x2</span>(<span class='ident'>K64</span>[<span class='number'>67</span>], <span class='ident'>K64</span>[<span class='number'>66</span>]), <span class='ident'>u64x2</span>(<span class='ident'>K64</span>[<span class='number'>69</span>], <span class='ident'>K64</span>[<span class='number'>68</span>]), <span class='ident'>u64x2</span>(<span class='ident'>K64</span>[<span class='number'>71</span>], <span class='ident'>K64</span>[<span class='number'>70</span>]),
<span class='ident'>u64x2</span>(<span class='ident'>K64</span>[<span class='number'>73</span>], <span class='ident'>K64</span>[<span class='number'>72</span>]), <span class='ident'>u64x2</span>(<span class='ident'>K64</span>[<span class='number'>75</span>], <span class='ident'>K64</span>[<span class='number'>74</span>]), <span class='ident'>u64x2</span>(<span class='ident'>K64</span>[<span class='number'>77</span>], <span class='ident'>K64</span>[<span class='number'>76</span>]), <span class='ident'>u64x2</span>(<span class='ident'>K64</span>[<span class='number'>79</span>], <span class='ident'>K64</span>[<span class='number'>78</span>])
];
<span class='comment'>// A structure that keeps track of the state of the Sha-512 operation and contains the logic</span>
<span class='comment'>// necessary to perform the final calculations.</span>
<span class='attribute'>#[<span class='ident'>derive</span>(<span class='ident'>Copy</span>, <span class='ident'>Clone</span>)]</span>
<span class='kw'>struct</span> <span class='ident'>Engine512</span> {
<span class='ident'>length_bits</span>: (<span class='ident'>u64</span>, <span class='ident'>u64</span>),
<span class='ident'>buffer</span>: <span class='ident'>FixedBuffer128</span>,
<span class='ident'>state</span>: <span class='ident'>Engine512State</span>,
<span class='ident'>finished</span>: <span class='ident'>bool</span>,
}
<span class='kw'>impl</span> <span class='ident'>Engine512</span> {
<span class='kw'>fn</span> <span class='ident'>new</span>(<span class='ident'>h</span>: <span class='kw-2'>&</span>[<span class='ident'>u64</span>; <span class='ident'>STATE_LEN</span>]) <span class='op'>-></span> <span class='ident'>Engine512</span> {
<span class='ident'>Engine512</span> {
<span class='ident'>length_bits</span>: (<span class='number'>0</span>, <span class='number'>0</span>),
<span class='ident'>buffer</span>: <span class='ident'>FixedBuffer128</span>::<span class='ident'>new</span>(),
<span class='ident'>state</span>: <span class='ident'>Engine512State</span>::<span class='ident'>new</span>(<span class='ident'>h</span>),
<span class='ident'>finished</span>: <span class='bool-val'>false</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'>h</span>: <span class='kw-2'>&</span>[<span class='ident'>u64</span>; <span class='ident'>STATE_LEN</span>]) {
<span class='self'>self</span>.<span class='ident'>length_bits</span> <span class='op'>=</span> (<span class='number'>0</span>, <span class='number'>0</span>);
<span class='self'>self</span>.<span class='ident'>buffer</span>.<span class='ident'>reset</span>();
<span class='self'>self</span>.<span class='ident'>state</span>.<span class='ident'>reset</span>(<span class='ident'>h</span>);
<span class='self'>self</span>.<span class='ident'>finished</span> <span class='op'>=</span> <span class='bool-val'>false</span>;
}
<span class='kw'>fn</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'>input</span>: <span class='kw-2'>&</span>[<span class='ident'>u8</span>]) {
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='op'>!</span><span class='self'>self</span>.<span class='ident'>finished</span>);
<span class='comment'>// Assumes that input.len() can be converted to u64 without overflow</span>
<span class='self'>self</span>.<span class='ident'>length_bits</span> <span class='op'>=</span> <span class='ident'>add_bytes_to_bits_tuple</span>(<span class='self'>self</span>.<span class='ident'>length_bits</span>, <span class='ident'>input</span>.<span class='ident'>len</span>() <span class='kw'>as</span> <span class='ident'>u64</span>);
<span class='kw'>let</span> <span class='ident'>self_state</span> <span class='op'>=</span> <span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>.<span class='ident'>state</span>;
<span class='self'>self</span>.<span class='ident'>buffer</span>.<span class='ident'>input</span>(<span class='ident'>input</span>, <span class='op'>|</span><span class='ident'>input</span>: <span class='kw-2'>&</span>[<span class='ident'>u8</span>]<span class='op'>|</span> { <span class='ident'>self_state</span>.<span class='ident'>process_block</span>(<span class='ident'>input</span>) });
}
<span class='kw'>fn</span> <span class='ident'>finish</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>) {
<span class='kw'>if</span> <span class='self'>self</span>.<span class='ident'>finished</span> {
<span class='kw'>return</span>;
}
<span class='kw'>let</span> <span class='ident'>self_state</span> <span class='op'>=</span> <span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>.<span class='ident'>state</span>;
<span class='self'>self</span>.<span class='ident'>buffer</span>.<span class='ident'>standard_padding</span>(<span class='number'>16</span>, <span class='op'>|</span><span class='ident'>input</span>: <span class='kw-2'>&</span>[<span class='ident'>u8</span>]<span class='op'>|</span> { <span class='ident'>self_state</span>.<span class='ident'>process_block</span>(<span class='ident'>input</span>) });
<span class='kw'>match</span> <span class='self'>self</span>.<span class='ident'>length_bits</span> {
(<span class='ident'>hi</span>, <span class='ident'>low</span>) <span class='op'>=></span> {
<span class='ident'>write_u64_be</span>(<span class='self'>self</span>.<span class='ident'>buffer</span>.<span class='ident'>next</span>(<span class='number'>8</span>), <span class='ident'>hi</span>);
<span class='ident'>write_u64_be</span>(<span class='self'>self</span>.<span class='ident'>buffer</span>.<span class='ident'>next</span>(<span class='number'>8</span>), <span class='ident'>low</span>);
}
}
<span class='ident'>self_state</span>.<span class='ident'>process_block</span>(<span class='self'>self</span>.<span class='ident'>buffer</span>.<span class='ident'>full_buffer</span>());
<span class='self'>self</span>.<span class='ident'>finished</span> <span class='op'>=</span> <span class='bool-val'>true</span>;
}
}
<span class='doccomment'>/// The SHA-512 hash algorithm with the SHA-512 initial hash value.</span>
<span class='attribute'>#[<span class='ident'>derive</span>(<span class='ident'>Copy</span>, <span class='ident'>Clone</span>)]</span>
<span class='kw'>pub</span> <span class='kw'>struct</span> <span class='ident'>Sha512</span> {
<span class='ident'>engine</span>: <span class='ident'>Engine512</span>
}
<span class='kw'>impl</span> <span class='ident'>Sha512</span> {
<span class='doccomment'>/**
* Construct an new instance of a SHA-512 digest.
*/</span>
<span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>new</span>() <span class='op'>-></span> <span class='ident'>Sha512</span> {
<span class='ident'>Sha512</span> {
<span class='ident'>engine</span>: <span class='ident'>Engine512</span>::<span class='ident'>new</span>(<span class='kw-2'>&</span><span class='ident'>H512</span>)
}
}
}
<span class='kw'>impl</span> <span class='ident'>Digest</span> <span class='kw'>for</span> <span class='ident'>Sha512</span> {
<span class='kw'>fn</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'>d</span>: <span class='kw-2'>&</span>[<span class='ident'>u8</span>]) {
<span class='self'>self</span>.<span class='ident'>engine</span>.<span class='ident'>input</span>(<span class='ident'>d</span>);
}
<span class='kw'>fn</span> <span class='ident'>result</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='ident'>out</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'>engine</span>.<span class='ident'>finish</span>();
<span class='ident'>write_u64_be</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>out</span>[<span class='number'>0</span>..<span class='number'>8</span>], <span class='self'>self</span>.<span class='ident'>engine</span>.<span class='ident'>state</span>.<span class='ident'>h</span>[<span class='number'>0</span>]);
<span class='ident'>write_u64_be</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>out</span>[<span class='number'>8</span>..<span class='number'>16</span>], <span class='self'>self</span>.<span class='ident'>engine</span>.<span class='ident'>state</span>.<span class='ident'>h</span>[<span class='number'>1</span>]);
<span class='ident'>write_u64_be</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>out</span>[<span class='number'>16</span>..<span class='number'>24</span>], <span class='self'>self</span>.<span class='ident'>engine</span>.<span class='ident'>state</span>.<span class='ident'>h</span>[<span class='number'>2</span>]);
<span class='ident'>write_u64_be</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>out</span>[<span class='number'>24</span>..<span class='number'>32</span>], <span class='self'>self</span>.<span class='ident'>engine</span>.<span class='ident'>state</span>.<span class='ident'>h</span>[<span class='number'>3</span>]);
<span class='ident'>write_u64_be</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>out</span>[<span class='number'>32</span>..<span class='number'>40</span>], <span class='self'>self</span>.<span class='ident'>engine</span>.<span class='ident'>state</span>.<span class='ident'>h</span>[<span class='number'>4</span>]);
<span class='ident'>write_u64_be</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>out</span>[<span class='number'>40</span>..<span class='number'>48</span>], <span class='self'>self</span>.<span class='ident'>engine</span>.<span class='ident'>state</span>.<span class='ident'>h</span>[<span class='number'>5</span>]);
<span class='ident'>write_u64_be</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>out</span>[<span class='number'>48</span>..<span class='number'>56</span>], <span class='self'>self</span>.<span class='ident'>engine</span>.<span class='ident'>state</span>.<span class='ident'>h</span>[<span class='number'>6</span>]);
<span class='ident'>write_u64_be</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>out</span>[<span class='number'>56</span>..<span class='number'>64</span>], <span class='self'>self</span>.<span class='ident'>engine</span>.<span class='ident'>state</span>.<span class='ident'>h</span>[<span class='number'>7</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'>engine</span>.<span class='ident'>reset</span>(<span class='kw-2'>&</span><span class='ident'>H512</span>);
}
<span class='kw'>fn</span> <span class='ident'>output_bits</span>(<span class='kw-2'>&</span><span class='self'>self</span>) <span class='op'>-></span> <span class='ident'>usize</span> { <span class='number'>512</span> }
<span class='kw'>fn</span> <span class='ident'>block_size</span>(<span class='kw-2'>&</span><span class='self'>self</span>) <span class='op'>-></span> <span class='ident'>usize</span> { <span class='number'>128</span> }
}
<span class='kw'>static</span> <span class='ident'>H512</span>: [<span class='ident'>u64</span>; <span class='ident'>STATE_LEN</span>] <span class='op'>=</span> [
<span class='number'>0x6a09e667f3bcc908</span>,
<span class='number'>0xbb67ae8584caa73b</span>,
<span class='number'>0x3c6ef372fe94f82b</span>,
<span class='number'>0xa54ff53a5f1d36f1</span>,
<span class='number'>0x510e527fade682d1</span>,
<span class='number'>0x9b05688c2b3e6c1f</span>,
<span class='number'>0x1f83d9abfb41bd6b</span>,
<span class='number'>0x5be0cd19137e2179</span>
];
<span class='doccomment'>/// The SHA-512 hash algorithm with the SHA-384 initial hash value. The result is truncated to 384 bits.</span>
<span class='attribute'>#[<span class='ident'>derive</span>(<span class='ident'>Copy</span>, <span class='ident'>Clone</span>)]</span>
<span class='kw'>pub</span> <span class='kw'>struct</span> <span class='ident'>Sha384</span> {
<span class='ident'>engine</span>: <span class='ident'>Engine512</span>
}
<span class='kw'>impl</span> <span class='ident'>Sha384</span> {
<span class='doccomment'>/**
* Construct an new instance of a SHA-384 digest.
*/</span>
<span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>new</span>() <span class='op'>-></span> <span class='ident'>Sha384</span> {
<span class='ident'>Sha384</span> {
<span class='ident'>engine</span>: <span class='ident'>Engine512</span>::<span class='ident'>new</span>(<span class='kw-2'>&</span><span class='ident'>H384</span>)
}
}
}
<span class='kw'>impl</span> <span class='ident'>Digest</span> <span class='kw'>for</span> <span class='ident'>Sha384</span> {
<span class='kw'>fn</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'>d</span>: <span class='kw-2'>&</span>[<span class='ident'>u8</span>]) {
<span class='self'>self</span>.<span class='ident'>engine</span>.<span class='ident'>input</span>(<span class='ident'>d</span>);
}
<span class='kw'>fn</span> <span class='ident'>result</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='ident'>out</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'>engine</span>.<span class='ident'>finish</span>();
<span class='ident'>write_u64_be</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>out</span>[<span class='number'>0</span>..<span class='number'>8</span>], <span class='self'>self</span>.<span class='ident'>engine</span>.<span class='ident'>state</span>.<span class='ident'>h</span>[<span class='number'>0</span>]);
<span class='ident'>write_u64_be</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>out</span>[<span class='number'>8</span>..<span class='number'>16</span>], <span class='self'>self</span>.<span class='ident'>engine</span>.<span class='ident'>state</span>.<span class='ident'>h</span>[<span class='number'>1</span>]);
<span class='ident'>write_u64_be</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>out</span>[<span class='number'>16</span>..<span class='number'>24</span>], <span class='self'>self</span>.<span class='ident'>engine</span>.<span class='ident'>state</span>.<span class='ident'>h</span>[<span class='number'>2</span>]);
<span class='ident'>write_u64_be</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>out</span>[<span class='number'>24</span>..<span class='number'>32</span>], <span class='self'>self</span>.<span class='ident'>engine</span>.<span class='ident'>state</span>.<span class='ident'>h</span>[<span class='number'>3</span>]);
<span class='ident'>write_u64_be</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>out</span>[<span class='number'>32</span>..<span class='number'>40</span>], <span class='self'>self</span>.<span class='ident'>engine</span>.<span class='ident'>state</span>.<span class='ident'>h</span>[<span class='number'>4</span>]);
<span class='ident'>write_u64_be</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>out</span>[<span class='number'>40</span>..<span class='number'>48</span>], <span class='self'>self</span>.<span class='ident'>engine</span>.<span class='ident'>state</span>.<span class='ident'>h</span>[<span class='number'>5</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'>engine</span>.<span class='ident'>reset</span>(<span class='kw-2'>&</span><span class='ident'>H384</span>);
}
<span class='kw'>fn</span> <span class='ident'>output_bits</span>(<span class='kw-2'>&</span><span class='self'>self</span>) <span class='op'>-></span> <span class='ident'>usize</span> { <span class='number'>384</span> }
<span class='kw'>fn</span> <span class='ident'>block_size</span>(<span class='kw-2'>&</span><span class='self'>self</span>) <span class='op'>-></span> <span class='ident'>usize</span> { <span class='number'>128</span> }
}
<span class='kw'>static</span> <span class='ident'>H384</span>: [<span class='ident'>u64</span>; <span class='ident'>STATE_LEN</span>] <span class='op'>=</span> [
<span class='number'>0xcbbb9d5dc1059ed8</span>,
<span class='number'>0x629a292a367cd507</span>,
<span class='number'>0x9159015a3070dd17</span>,
<span class='number'>0x152fecd8f70e5939</span>,
<span class='number'>0x67332667ffc00b31</span>,
<span class='number'>0x8eb44a8768581511</span>,
<span class='number'>0xdb0c2e0d64f98fa7</span>,
<span class='number'>0x47b5481dbefa4fa4</span>
];
<span class='doccomment'>/// The SHA-512 hash algorithm with the SHA-512/256 initial hash value. The result is truncated to 256 bits.</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'>Sha512Trunc256</span> {
<span class='ident'>engine</span>: <span class='ident'>Engine512</span>
}
<span class='kw'>impl</span> <span class='ident'>Sha512Trunc256</span> {
<span class='doccomment'>/**
* Construct an new instance of a SHA-512/256 digest.
*/</span>
<span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>new</span>() <span class='op'>-></span> <span class='ident'>Sha512Trunc256</span> {
<span class='ident'>Sha512Trunc256</span> {
<span class='ident'>engine</span>: <span class='ident'>Engine512</span>::<span class='ident'>new</span>(<span class='kw-2'>&</span><span class='ident'>H512_TRUNC_256</span>)
}
}
}
<span class='kw'>impl</span> <span class='ident'>Digest</span> <span class='kw'>for</span> <span class='ident'>Sha512Trunc256</span> {
<span class='kw'>fn</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'>d</span>: <span class='kw-2'>&</span>[<span class='ident'>u8</span>]) {
<span class='self'>self</span>.<span class='ident'>engine</span>.<span class='ident'>input</span>(<span class='ident'>d</span>);
}
<span class='kw'>fn</span> <span class='ident'>result</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='ident'>out</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'>engine</span>.<span class='ident'>finish</span>();
<span class='ident'>write_u64_be</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>out</span>[<span class='number'>0</span>..<span class='number'>8</span>], <span class='self'>self</span>.<span class='ident'>engine</span>.<span class='ident'>state</span>.<span class='ident'>h</span>[<span class='number'>0</span>]);
<span class='ident'>write_u64_be</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>out</span>[<span class='number'>8</span>..<span class='number'>16</span>], <span class='self'>self</span>.<span class='ident'>engine</span>.<span class='ident'>state</span>.<span class='ident'>h</span>[<span class='number'>1</span>]);
<span class='ident'>write_u64_be</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>out</span>[<span class='number'>16</span>..<span class='number'>24</span>], <span class='self'>self</span>.<span class='ident'>engine</span>.<span class='ident'>state</span>.<span class='ident'>h</span>[<span class='number'>2</span>]);
<span class='ident'>write_u64_be</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>out</span>[<span class='number'>24</span>..<span class='number'>32</span>], <span class='self'>self</span>.<span class='ident'>engine</span>.<span class='ident'>state</span>.<span class='ident'>h</span>[<span class='number'>3</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'>engine</span>.<span class='ident'>reset</span>(<span class='kw-2'>&</span><span class='ident'>H512_TRUNC_256</span>);
}
<span class='kw'>fn</span> <span class='ident'>output_bits</span>(<span class='kw-2'>&</span><span class='self'>self</span>) <span class='op'>-></span> <span class='ident'>usize</span> { <span class='number'>256</span> }
<span class='kw'>fn</span> <span class='ident'>block_size</span>(<span class='kw-2'>&</span><span class='self'>self</span>) <span class='op'>-></span> <span class='ident'>usize</span> { <span class='number'>128</span> }
}
<span class='kw'>static</span> <span class='ident'>H512_TRUNC_256</span>: [<span class='ident'>u64</span>; <span class='ident'>STATE_LEN</span>] <span class='op'>=</span> [
<span class='number'>0x22312194fc2bf72c</span>,
<span class='number'>0x9f555fa3c84c64c2</span>,
<span class='number'>0x2393b86b6f53b151</span>,
<span class='number'>0x963877195940eabd</span>,
<span class='number'>0x96283ee2a88effe3</span>,
<span class='number'>0xbe5e1e2553863992</span>,
<span class='number'>0x2b0199fc2c85b8aa</span>,
<span class='number'>0x0eb72ddc81c52ca2</span>
];
<span class='doccomment'>/// The SHA-512 hash algorithm with the SHA-512/224 initial hash value. The result is truncated to 224 bits.</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'>Sha512Trunc224</span> {
<span class='ident'>engine</span>: <span class='ident'>Engine512</span>
}
<span class='kw'>impl</span> <span class='ident'>Sha512Trunc224</span> {
<span class='doccomment'>/**
* Construct an new instance of a SHA-512/224 digest.
*/</span>
<span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>new</span>() <span class='op'>-></span> <span class='ident'>Sha512Trunc224</span> {
<span class='ident'>Sha512Trunc224</span> {
<span class='ident'>engine</span>: <span class='ident'>Engine512</span>::<span class='ident'>new</span>(<span class='kw-2'>&</span><span class='ident'>H512_TRUNC_224</span>)
}
}
}
<span class='kw'>impl</span> <span class='ident'>Digest</span> <span class='kw'>for</span> <span class='ident'>Sha512Trunc224</span> {
<span class='kw'>fn</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'>d</span>: <span class='kw-2'>&</span>[<span class='ident'>u8</span>]) {
<span class='self'>self</span>.<span class='ident'>engine</span>.<span class='ident'>input</span>(<span class='ident'>d</span>);
}
<span class='kw'>fn</span> <span class='ident'>result</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='ident'>out</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'>engine</span>.<span class='ident'>finish</span>();
<span class='ident'>write_u64_be</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>out</span>[<span class='number'>0</span>..<span class='number'>8</span>], <span class='self'>self</span>.<span class='ident'>engine</span>.<span class='ident'>state</span>.<span class='ident'>h</span>[<span class='number'>0</span>]);
<span class='ident'>write_u64_be</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>out</span>[<span class='number'>8</span>..<span class='number'>16</span>], <span class='self'>self</span>.<span class='ident'>engine</span>.<span class='ident'>state</span>.<span class='ident'>h</span>[<span class='number'>1</span>]);
<span class='ident'>write_u64_be</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>out</span>[<span class='number'>16</span>..<span class='number'>24</span>], <span class='self'>self</span>.<span class='ident'>engine</span>.<span class='ident'>state</span>.<span class='ident'>h</span>[<span class='number'>2</span>]);
<span class='ident'>write_u32_be</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>out</span>[<span class='number'>24</span>..<span class='number'>28</span>], (<span class='self'>self</span>.<span class='ident'>engine</span>.<span class='ident'>state</span>.<span class='ident'>h</span>[<span class='number'>3</span>] <span class='op'>>></span> <span class='number'>32</span>) <span class='kw'>as</span> <span class='ident'>u32</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'>engine</span>.<span class='ident'>reset</span>(<span class='kw-2'>&</span><span class='ident'>H512_TRUNC_224</span>);
}
<span class='kw'>fn</span> <span class='ident'>output_bits</span>(<span class='kw-2'>&</span><span class='self'>self</span>) <span class='op'>-></span> <span class='ident'>usize</span> { <span class='number'>224</span> }
<span class='kw'>fn</span> <span class='ident'>block_size</span>(<span class='kw-2'>&</span><span class='self'>self</span>) <span class='op'>-></span> <span class='ident'>usize</span> { <span class='number'>128</span> }
}
<span class='kw'>static</span> <span class='ident'>H512_TRUNC_224</span>: [<span class='ident'>u64</span>; <span class='ident'>STATE_LEN</span>] <span class='op'>=</span> [
<span class='number'>0x8c3d37c819544da2</span>,
<span class='number'>0x73e1996689dcd4d6</span>,
<span class='number'>0x1dfab7ae32ff9c82</span>,
<span class='number'>0x679dd514582f9fcf</span>,
<span class='number'>0x0f6d2b697bd44da8</span>,
<span class='number'>0x77e36f7304c48942</span>,
<span class='number'>0x3f9d85a86a1d36c8</span>,
<span class='number'>0x1112e6ad91d692a1</span>,
];
<span class='comment'>// A structure that represents that state of a digest computation for the SHA-2 512 family of digest</span>
<span class='comment'>// functions</span>
<span class='attribute'>#[<span class='ident'>derive</span>(<span class='ident'>Clone</span>, <span class='ident'>Copy</span>)]</span>
<span class='kw'>struct</span> <span class='ident'>Engine256State</span> {
<span class='ident'>h</span>: [<span class='ident'>u32</span>; <span class='number'>8</span>],
}
<span class='kw'>impl</span> <span class='ident'>Engine256State</span> {
<span class='kw'>fn</span> <span class='ident'>new</span>(<span class='ident'>h</span>: <span class='kw-2'>&</span>[<span class='ident'>u32</span>; <span class='ident'>STATE_LEN</span>]) <span class='op'>-></span> <span class='ident'>Engine256State</span> {
<span class='ident'>Engine256State</span> {
<span class='ident'>h</span>: <span class='kw-2'>*</span><span class='ident'>h</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'>h</span>: <span class='kw-2'>&</span>[<span class='ident'>u32</span>; <span class='ident'>STATE_LEN</span>]) {
<span class='self'>self</span>.<span class='ident'>h</span> <span class='op'>=</span> <span class='kw-2'>*</span><span class='ident'>h</span>;
}
<span class='kw'>pub</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'>data</span>: <span class='kw-2'>&</span>[<span class='ident'>u8</span>]) {
<span class='ident'>sha256_digest_block</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>.<span class='ident'>h</span>, <span class='ident'>data</span>);
}
}
<span class='doccomment'>/// Constants necessary for SHA-256 family of digests.</span>
<span class='kw'>pub</span> <span class='kw'>const</span> <span class='ident'>K32</span>: [<span class='ident'>u32</span>; <span class='number'>64</span>] <span class='op'>=</span> [
<span class='number'>0x428a2f98</span>, <span class='number'>0x71374491</span>, <span class='number'>0xb5c0fbcf</span>, <span class='number'>0xe9b5dba5</span>,
<span class='number'>0x3956c25b</span>, <span class='number'>0x59f111f1</span>, <span class='number'>0x923f82a4</span>, <span class='number'>0xab1c5ed5</span>,
<span class='number'>0xd807aa98</span>, <span class='number'>0x12835b01</span>, <span class='number'>0x243185be</span>, <span class='number'>0x550c7dc3</span>,
<span class='number'>0x72be5d74</span>, <span class='number'>0x80deb1fe</span>, <span class='number'>0x9bdc06a7</span>, <span class='number'>0xc19bf174</span>,
<span class='number'>0xe49b69c1</span>, <span class='number'>0xefbe4786</span>, <span class='number'>0x0fc19dc6</span>, <span class='number'>0x240ca1cc</span>,
<span class='number'>0x2de92c6f</span>, <span class='number'>0x4a7484aa</span>, <span class='number'>0x5cb0a9dc</span>, <span class='number'>0x76f988da</span>,
<span class='number'>0x983e5152</span>, <span class='number'>0xa831c66d</span>, <span class='number'>0xb00327c8</span>, <span class='number'>0xbf597fc7</span>,
<span class='number'>0xc6e00bf3</span>, <span class='number'>0xd5a79147</span>, <span class='number'>0x06ca6351</span>, <span class='number'>0x14292967</span>,
<span class='number'>0x27b70a85</span>, <span class='number'>0x2e1b2138</span>, <span class='number'>0x4d2c6dfc</span>, <span class='number'>0x53380d13</span>,
<span class='number'>0x650a7354</span>, <span class='number'>0x766a0abb</span>, <span class='number'>0x81c2c92e</span>, <span class='number'>0x92722c85</span>,
<span class='number'>0xa2bfe8a1</span>, <span class='number'>0xa81a664b</span>, <span class='number'>0xc24b8b70</span>, <span class='number'>0xc76c51a3</span>,
<span class='number'>0xd192e819</span>, <span class='number'>0xd6990624</span>, <span class='number'>0xf40e3585</span>, <span class='number'>0x106aa070</span>,
<span class='number'>0x19a4c116</span>, <span class='number'>0x1e376c08</span>, <span class='number'>0x2748774c</span>, <span class='number'>0x34b0bcb5</span>,
<span class='number'>0x391c0cb3</span>, <span class='number'>0x4ed8aa4a</span>, <span class='number'>0x5b9cca4f</span>, <span class='number'>0x682e6ff3</span>,
<span class='number'>0x748f82ee</span>, <span class='number'>0x78a5636f</span>, <span class='number'>0x84c87814</span>, <span class='number'>0x8cc70208</span>,
<span class='number'>0x90befffa</span>, <span class='number'>0xa4506ceb</span>, <span class='number'>0xbef9a3f7</span>, <span class='number'>0xc67178f2</span>
];
<span class='doccomment'>/// Constants necessary for SHA-256 family of digests.</span>
<span class='kw'>pub</span> <span class='kw'>const</span> <span class='ident'>K32X4</span>: [<span class='ident'>u32x4</span>; <span class='number'>16</span>] <span class='op'>=</span> [
<span class='ident'>u32x4</span>(<span class='ident'>K32</span>[<span class='number'>3</span>], <span class='ident'>K32</span>[<span class='number'>2</span>], <span class='ident'>K32</span>[<span class='number'>1</span>], <span class='ident'>K32</span>[<span class='number'>0</span>]),
<span class='ident'>u32x4</span>(<span class='ident'>K32</span>[<span class='number'>7</span>], <span class='ident'>K32</span>[<span class='number'>6</span>], <span class='ident'>K32</span>[<span class='number'>5</span>], <span class='ident'>K32</span>[<span class='number'>4</span>]),
<span class='ident'>u32x4</span>(<span class='ident'>K32</span>[<span class='number'>11</span>], <span class='ident'>K32</span>[<span class='number'>10</span>], <span class='ident'>K32</span>[<span class='number'>9</span>], <span class='ident'>K32</span>[<span class='number'>8</span>]),
<span class='ident'>u32x4</span>(<span class='ident'>K32</span>[<span class='number'>15</span>], <span class='ident'>K32</span>[<span class='number'>14</span>], <span class='ident'>K32</span>[<span class='number'>13</span>], <span class='ident'>K32</span>[<span class='number'>12</span>]),
<span class='ident'>u32x4</span>(<span class='ident'>K32</span>[<span class='number'>19</span>], <span class='ident'>K32</span>[<span class='number'>18</span>], <span class='ident'>K32</span>[<span class='number'>17</span>], <span class='ident'>K32</span>[<span class='number'>16</span>]),
<span class='ident'>u32x4</span>(<span class='ident'>K32</span>[<span class='number'>23</span>], <span class='ident'>K32</span>[<span class='number'>22</span>], <span class='ident'>K32</span>[<span class='number'>21</span>], <span class='ident'>K32</span>[<span class='number'>20</span>]),
<span class='ident'>u32x4</span>(<span class='ident'>K32</span>[<span class='number'>27</span>], <span class='ident'>K32</span>[<span class='number'>26</span>], <span class='ident'>K32</span>[<span class='number'>25</span>], <span class='ident'>K32</span>[<span class='number'>24</span>]),
<span class='ident'>u32x4</span>(<span class='ident'>K32</span>[<span class='number'>31</span>], <span class='ident'>K32</span>[<span class='number'>30</span>], <span class='ident'>K32</span>[<span class='number'>29</span>], <span class='ident'>K32</span>[<span class='number'>28</span>]),
<span class='ident'>u32x4</span>(<span class='ident'>K32</span>[<span class='number'>35</span>], <span class='ident'>K32</span>[<span class='number'>34</span>], <span class='ident'>K32</span>[<span class='number'>33</span>], <span class='ident'>K32</span>[<span class='number'>32</span>]),
<span class='ident'>u32x4</span>(<span class='ident'>K32</span>[<span class='number'>39</span>], <span class='ident'>K32</span>[<span class='number'>38</span>], <span class='ident'>K32</span>[<span class='number'>37</span>], <span class='ident'>K32</span>[<span class='number'>36</span>]),
<span class='ident'>u32x4</span>(<span class='ident'>K32</span>[<span class='number'>43</span>], <span class='ident'>K32</span>[<span class='number'>42</span>], <span class='ident'>K32</span>[<span class='number'>41</span>], <span class='ident'>K32</span>[<span class='number'>40</span>]),
<span class='ident'>u32x4</span>(<span class='ident'>K32</span>[<span class='number'>47</span>], <span class='ident'>K32</span>[<span class='number'>46</span>], <span class='ident'>K32</span>[<span class='number'>45</span>], <span class='ident'>K32</span>[<span class='number'>44</span>]),
<span class='ident'>u32x4</span>(<span class='ident'>K32</span>[<span class='number'>51</span>], <span class='ident'>K32</span>[<span class='number'>50</span>], <span class='ident'>K32</span>[<span class='number'>49</span>], <span class='ident'>K32</span>[<span class='number'>48</span>]),
<span class='ident'>u32x4</span>(<span class='ident'>K32</span>[<span class='number'>55</span>], <span class='ident'>K32</span>[<span class='number'>54</span>], <span class='ident'>K32</span>[<span class='number'>53</span>], <span class='ident'>K32</span>[<span class='number'>52</span>]),
<span class='ident'>u32x4</span>(<span class='ident'>K32</span>[<span class='number'>59</span>], <span class='ident'>K32</span>[<span class='number'>58</span>], <span class='ident'>K32</span>[<span class='number'>57</span>], <span class='ident'>K32</span>[<span class='number'>56</span>]),
<span class='ident'>u32x4</span>(<span class='ident'>K32</span>[<span class='number'>63</span>], <span class='ident'>K32</span>[<span class='number'>62</span>], <span class='ident'>K32</span>[<span class='number'>61</span>], <span class='ident'>K32</span>[<span class='number'>60</span>]),
];
<span class='comment'>// A structure that keeps track of the state of the Sha-256 operation and contains the logic</span>
<span class='comment'>// necessary to perform the final calculations.</span>
<span class='attribute'>#[<span class='ident'>derive</span>(<span class='ident'>Clone</span>, <span class='ident'>Copy</span>)]</span>
<span class='kw'>struct</span> <span class='ident'>Engine256</span> {
<span class='ident'>length_bits</span>: <span class='ident'>u64</span>,
<span class='ident'>buffer</span>: <span class='ident'>FixedBuffer64</span>,
<span class='ident'>state</span>: <span class='ident'>Engine256State</span>,
<span class='ident'>finished</span>: <span class='ident'>bool</span>,
}
<span class='kw'>impl</span> <span class='ident'>Engine256</span> {
<span class='kw'>fn</span> <span class='ident'>new</span>(<span class='ident'>h</span>: <span class='kw-2'>&</span>[<span class='ident'>u32</span>; <span class='ident'>STATE_LEN</span>]) <span class='op'>-></span> <span class='ident'>Engine256</span> {
<span class='ident'>Engine256</span> {
<span class='ident'>length_bits</span>: <span class='number'>0</span>,
<span class='ident'>buffer</span>: <span class='ident'>FixedBuffer64</span>::<span class='ident'>new</span>(),
<span class='ident'>state</span>: <span class='ident'>Engine256State</span>::<span class='ident'>new</span>(<span class='ident'>h</span>),
<span class='ident'>finished</span>: <span class='bool-val'>false</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'>h</span>: <span class='kw-2'>&</span>[<span class='ident'>u32</span>; <span class='ident'>STATE_LEN</span>]) {
<span class='self'>self</span>.<span class='ident'>length_bits</span> <span class='op'>=</span> <span class='number'>0</span>;
<span class='self'>self</span>.<span class='ident'>buffer</span>.<span class='ident'>reset</span>();
<span class='self'>self</span>.<span class='ident'>state</span>.<span class='ident'>reset</span>(<span class='ident'>h</span>);
<span class='self'>self</span>.<span class='ident'>finished</span> <span class='op'>=</span> <span class='bool-val'>false</span>;
}
<span class='kw'>fn</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'>input</span>: <span class='kw-2'>&</span>[<span class='ident'>u8</span>]) {
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='op'>!</span><span class='self'>self</span>.<span class='ident'>finished</span>);
<span class='comment'>// Assumes that input.len() can be converted to u64 without overflow</span>
<span class='self'>self</span>.<span class='ident'>length_bits</span> <span class='op'>=</span> <span class='ident'>add_bytes_to_bits</span>(<span class='self'>self</span>.<span class='ident'>length_bits</span>, <span class='ident'>input</span>.<span class='ident'>len</span>() <span class='kw'>as</span> <span class='ident'>u64</span>);
<span class='kw'>let</span> <span class='ident'>self_state</span> <span class='op'>=</span> <span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>.<span class='ident'>state</span>;
<span class='self'>self</span>.<span class='ident'>buffer</span>.<span class='ident'>input</span>(<span class='ident'>input</span>, <span class='op'>|</span><span class='ident'>input</span>: <span class='kw-2'>&</span>[<span class='ident'>u8</span>]<span class='op'>|</span> { <span class='ident'>self_state</span>.<span class='ident'>process_block</span>(<span class='ident'>input</span>) });
}
<span class='kw'>fn</span> <span class='ident'>finish</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>) {
<span class='kw'>if</span> <span class='self'>self</span>.<span class='ident'>finished</span> {
<span class='kw'>return</span>;
}
<span class='kw'>let</span> <span class='ident'>self_state</span> <span class='op'>=</span> <span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>.<span class='ident'>state</span>;
<span class='self'>self</span>.<span class='ident'>buffer</span>.<span class='ident'>standard_padding</span>(<span class='number'>8</span>, <span class='op'>|</span><span class='ident'>input</span>: <span class='kw-2'>&</span>[<span class='ident'>u8</span>]<span class='op'>|</span> { <span class='ident'>self_state</span>.<span class='ident'>process_block</span>(<span class='ident'>input</span>) });
<span class='ident'>write_u32_be</span>(<span class='self'>self</span>.<span class='ident'>buffer</span>.<span class='ident'>next</span>(<span class='number'>4</span>), (<span class='self'>self</span>.<span class='ident'>length_bits</span> <span class='op'>>></span> <span class='number'>32</span>) <span class='kw'>as</span> <span class='ident'>u32</span> );
<span class='ident'>write_u32_be</span>(<span class='self'>self</span>.<span class='ident'>buffer</span>.<span class='ident'>next</span>(<span class='number'>4</span>), <span class='self'>self</span>.<span class='ident'>length_bits</span> <span class='kw'>as</span> <span class='ident'>u32</span>);
<span class='ident'>self_state</span>.<span class='ident'>process_block</span>(<span class='self'>self</span>.<span class='ident'>buffer</span>.<span class='ident'>full_buffer</span>());
<span class='self'>self</span>.<span class='ident'>finished</span> <span class='op'>=</span> <span class='bool-val'>true</span>;
}
}
<span class='doccomment'>/// The SHA-256 hash algorithm with the SHA-256 initial hash value.</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'>Sha256</span> {
<span class='ident'>engine</span>: <span class='ident'>Engine256</span>
}
<span class='kw'>impl</span> <span class='ident'>Sha256</span> {
<span class='doccomment'>/**
* Construct an new instance of a SHA-256 digest.
*/</span>
<span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>new</span>() <span class='op'>-></span> <span class='ident'>Sha256</span> {
<span class='ident'>Sha256</span> {
<span class='ident'>engine</span>: <span class='ident'>Engine256</span>::<span class='ident'>new</span>(<span class='kw-2'>&</span><span class='ident'>H256</span>)
}
}
}
<span class='kw'>impl</span> <span class='ident'>Digest</span> <span class='kw'>for</span> <span class='ident'>Sha256</span> {
<span class='kw'>fn</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'>d</span>: <span class='kw-2'>&</span>[<span class='ident'>u8</span>]) {
<span class='self'>self</span>.<span class='ident'>engine</span>.<span class='ident'>input</span>(<span class='ident'>d</span>);
}
<span class='kw'>fn</span> <span class='ident'>result</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='ident'>out</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'>engine</span>.<span class='ident'>finish</span>();
<span class='ident'>write_u32_be</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>out</span>[<span class='number'>0</span>..<span class='number'>4</span>], <span class='self'>self</span>.<span class='ident'>engine</span>.<span class='ident'>state</span>.<span class='ident'>h</span>[<span class='number'>0</span>]);
<span class='ident'>write_u32_be</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>out</span>[<span class='number'>4</span>..<span class='number'>8</span>], <span class='self'>self</span>.<span class='ident'>engine</span>.<span class='ident'>state</span>.<span class='ident'>h</span>[<span class='number'>1</span>]);
<span class='ident'>write_u32_be</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>out</span>[<span class='number'>8</span>..<span class='number'>12</span>], <span class='self'>self</span>.<span class='ident'>engine</span>.<span class='ident'>state</span>.<span class='ident'>h</span>[<span class='number'>2</span>]);
<span class='ident'>write_u32_be</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>out</span>[<span class='number'>12</span>..<span class='number'>16</span>], <span class='self'>self</span>.<span class='ident'>engine</span>.<span class='ident'>state</span>.<span class='ident'>h</span>[<span class='number'>3</span>]);
<span class='ident'>write_u32_be</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>out</span>[<span class='number'>16</span>..<span class='number'>20</span>], <span class='self'>self</span>.<span class='ident'>engine</span>.<span class='ident'>state</span>.<span class='ident'>h</span>[<span class='number'>4</span>]);
<span class='ident'>write_u32_be</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>out</span>[<span class='number'>20</span>..<span class='number'>24</span>], <span class='self'>self</span>.<span class='ident'>engine</span>.<span class='ident'>state</span>.<span class='ident'>h</span>[<span class='number'>5</span>]);
<span class='ident'>write_u32_be</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>out</span>[<span class='number'>24</span>..<span class='number'>28</span>], <span class='self'>self</span>.<span class='ident'>engine</span>.<span class='ident'>state</span>.<span class='ident'>h</span>[<span class='number'>6</span>]);
<span class='ident'>write_u32_be</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>out</span>[<span class='number'>28</span>..<span class='number'>32</span>], <span class='self'>self</span>.<span class='ident'>engine</span>.<span class='ident'>state</span>.<span class='ident'>h</span>[<span class='number'>7</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'>engine</span>.<span class='ident'>reset</span>(<span class='kw-2'>&</span><span class='ident'>H256</span>);
}
<span class='kw'>fn</span> <span class='ident'>output_bits</span>(<span class='kw-2'>&</span><span class='self'>self</span>) <span class='op'>-></span> <span class='ident'>usize</span> { <span class='number'>256</span> }
<span class='kw'>fn</span> <span class='ident'>block_size</span>(<span class='kw-2'>&</span><span class='self'>self</span>) <span class='op'>-></span> <span class='ident'>usize</span> { <span class='number'>64</span> }
}
<span class='kw'>static</span> <span class='ident'>H256</span>: [<span class='ident'>u32</span>; <span class='ident'>STATE_LEN</span>] <span class='op'>=</span> [
<span class='number'>0x6a09e667</span>,
<span class='number'>0xbb67ae85</span>,
<span class='number'>0x3c6ef372</span>,
<span class='number'>0xa54ff53a</span>,
<span class='number'>0x510e527f</span>,
<span class='number'>0x9b05688c</span>,
<span class='number'>0x1f83d9ab</span>,
<span class='number'>0x5be0cd19</span>
];
<span class='doccomment'>/// The SHA-256 hash algorithm with the SHA-224 initial hash value. The result is truncated to 224 bits.</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'>Sha224</span> {
<span class='ident'>engine</span>: <span class='ident'>Engine256</span>
}
<span class='kw'>impl</span> <span class='ident'>Sha224</span> {
<span class='doccomment'>/**
* Construct an new instance of a SHA-224 digest.
*/</span>
<span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>new</span>() <span class='op'>-></span> <span class='ident'>Sha224</span> {
<span class='ident'>Sha224</span> {
<span class='ident'>engine</span>: <span class='ident'>Engine256</span>::<span class='ident'>new</span>(<span class='kw-2'>&</span><span class='ident'>H224</span>)
}
}
}
<span class='kw'>impl</span> <span class='ident'>Digest</span> <span class='kw'>for</span> <span class='ident'>Sha224</span> {
<span class='kw'>fn</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'>d</span>: <span class='kw-2'>&</span>[<span class='ident'>u8</span>]) {
<span class='self'>self</span>.<span class='ident'>engine</span>.<span class='ident'>input</span>(<span class='ident'>d</span>);
}
<span class='kw'>fn</span> <span class='ident'>result</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='ident'>out</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'>engine</span>.<span class='ident'>finish</span>();
<span class='ident'>write_u32_be</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>out</span>[<span class='number'>0</span>..<span class='number'>4</span>], <span class='self'>self</span>.<span class='ident'>engine</span>.<span class='ident'>state</span>.<span class='ident'>h</span>[<span class='number'>0</span>]);
<span class='ident'>write_u32_be</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>out</span>[<span class='number'>4</span>..<span class='number'>8</span>], <span class='self'>self</span>.<span class='ident'>engine</span>.<span class='ident'>state</span>.<span class='ident'>h</span>[<span class='number'>1</span>]);
<span class='ident'>write_u32_be</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>out</span>[<span class='number'>8</span>..<span class='number'>12</span>], <span class='self'>self</span>.<span class='ident'>engine</span>.<span class='ident'>state</span>.<span class='ident'>h</span>[<span class='number'>2</span>]);
<span class='ident'>write_u32_be</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>out</span>[<span class='number'>12</span>..<span class='number'>16</span>], <span class='self'>self</span>.<span class='ident'>engine</span>.<span class='ident'>state</span>.<span class='ident'>h</span>[<span class='number'>3</span>]);
<span class='ident'>write_u32_be</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>out</span>[<span class='number'>16</span>..<span class='number'>20</span>], <span class='self'>self</span>.<span class='ident'>engine</span>.<span class='ident'>state</span>.<span class='ident'>h</span>[<span class='number'>4</span>]);
<span class='ident'>write_u32_be</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>out</span>[<span class='number'>20</span>..<span class='number'>24</span>], <span class='self'>self</span>.<span class='ident'>engine</span>.<span class='ident'>state</span>.<span class='ident'>h</span>[<span class='number'>5</span>]);
<span class='ident'>write_u32_be</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>out</span>[<span class='number'>24</span>..<span class='number'>28</span>], <span class='self'>self</span>.<span class='ident'>engine</span>.<span class='ident'>state</span>.<span class='ident'>h</span>[<span class='number'>6</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'>engine</span>.<span class='ident'>reset</span>(<span class='kw-2'>&</span><span class='ident'>H224</span>);
}
<span class='kw'>fn</span> <span class='ident'>output_bits</span>(<span class='kw-2'>&</span><span class='self'>self</span>) <span class='op'>-></span> <span class='ident'>usize</span> { <span class='number'>224</span> }
<span class='kw'>fn</span> <span class='ident'>block_size</span>(<span class='kw-2'>&</span><span class='self'>self</span>) <span class='op'>-></span> <span class='ident'>usize</span> { <span class='number'>64</span> }
}
<span class='kw'>static</span> <span class='ident'>H224</span>: [<span class='ident'>u32</span>; <span class='ident'>STATE_LEN</span>] <span class='op'>=</span> [
<span class='number'>0xc1059ed8</span>,
<span class='number'>0x367cd507</span>,
<span class='number'>0x3070dd17</span>,
<span class='number'>0xf70e5939</span>,
<span class='number'>0xffc00b31</span>,
<span class='number'>0x68581511</span>,
<span class='number'>0x64f98fa7</span>,
<span class='number'>0xbefa4fa4</span>
];
<span class='attribute'>#[<span class='ident'>cfg</span>(<span class='ident'>test</span>)]</span>
<span class='kw'>mod</span> <span class='ident'>tests</span> {
<span class='kw'>use</span> <span class='ident'>cryptoutil</span>::<span class='ident'>test</span>::<span class='ident'>test_digest_1million_random</span>;
<span class='kw'>use</span> <span class='ident'>digest</span>::<span class='ident'>Digest</span>;
<span class='kw'>use</span> <span class='ident'>sha2</span>::{<span class='ident'>Sha512</span>, <span class='ident'>Sha384</span>, <span class='ident'>Sha512Trunc256</span>, <span class='ident'>Sha512Trunc224</span>, <span class='ident'>Sha256</span>, <span class='ident'>Sha224</span>};
<span class='kw'>struct</span> <span class='ident'>Test</span> {
<span class='ident'>input</span>: <span class='kw-2'>&</span><span class='lifetime'>'static</span> <span class='ident'>str</span>,
<span class='ident'>output_str</span>: <span class='kw-2'>&</span><span class='lifetime'>'static</span> <span class='ident'>str</span>,
}
<span class='kw'>fn</span> <span class='ident'>test_hash</span><span class='op'><</span><span class='ident'>D</span>: <span class='ident'>Digest</span><span class='op'>></span>(<span class='ident'>sh</span>: <span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>D</span>, <span class='ident'>tests</span>: <span class='kw-2'>&</span>[<span class='ident'>Test</span>]) {
<span class='comment'>// Test that it works when accepting the message all at once</span>
<span class='kw'>for</span> <span class='ident'>t</span> <span class='kw'>in</span> <span class='ident'>tests</span>.<span class='ident'>iter</span>() {
<span class='ident'>sh</span>.<span class='ident'>input_str</span>(<span class='ident'>t</span>.<span class='ident'>input</span>);
<span class='kw'>let</span> <span class='ident'>out_str</span> <span class='op'>=</span> <span class='ident'>sh</span>.<span class='ident'>result_str</span>();
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='kw-2'>&</span><span class='ident'>out_str</span>[..] <span class='op'>==</span> <span class='ident'>t</span>.<span class='ident'>output_str</span>);
<span class='ident'>sh</span>.<span class='ident'>reset</span>();
}
<span class='comment'>// Test that it works when accepting the message in pieces</span>
<span class='kw'>for</span> <span class='ident'>t</span> <span class='kw'>in</span> <span class='ident'>tests</span>.<span class='ident'>iter</span>() {
<span class='kw'>let</span> <span class='ident'>len</span> <span class='op'>=</span> <span class='ident'>t</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'>left</span> <span class='op'>=</span> <span class='ident'>len</span>;
<span class='kw'>while</span> <span class='ident'>left</span> <span class='op'>></span> <span class='number'>0</span> {
<span class='kw'>let</span> <span class='ident'>take</span> <span class='op'>=</span> (<span class='ident'>left</span> <span class='op'>+</span> <span class='number'>1</span>) <span class='op'>/</span> <span class='number'>2</span>;
<span class='ident'>sh</span>.<span class='ident'>input_str</span>(<span class='kw-2'>&</span><span class='ident'>t</span>.<span class='ident'>input</span>[<span class='ident'>len</span> <span class='op'>-</span> <span class='ident'>left</span>..<span class='ident'>take</span> <span class='op'>+</span> <span class='ident'>len</span> <span class='op'>-</span> <span class='ident'>left</span>]);
<span class='ident'>left</span> <span class='op'>=</span> <span class='ident'>left</span> <span class='op'>-</span> <span class='ident'>take</span>;
}
<span class='kw'>let</span> <span class='ident'>out_str</span> <span class='op'>=</span> <span class='ident'>sh</span>.<span class='ident'>result_str</span>();
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='kw-2'>&</span><span class='ident'>out_str</span>[..] <span class='op'>==</span> <span class='ident'>t</span>.<span class='ident'>output_str</span>);
<span class='ident'>sh</span>.<span class='ident'>reset</span>();
}
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='kw'>fn</span> <span class='ident'>test_sha512</span>() {
<span class='comment'>// Examples from wikipedia</span>
<span class='kw'>let</span> <span class='ident'>wikipedia_tests</span> <span class='op'>=</span> <span class='macro'>vec</span><span class='macro'>!</span>[
<span class='ident'>Test</span> {
<span class='ident'>input</span>: <span class='string'>""</span>,
<span class='ident'>output_str</span>: <span class='string'>"cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e"</span>
},
<span class='ident'>Test</span> {
<span class='ident'>input</span>: <span class='string'>"The quick brown fox jumps over the lazy dog"</span>,
<span class='ident'>output_str</span>: <span class='string'>"07e547d9586f6a73f73fbac0435ed76951218fb7d0c8d788a309d785436bbb642e93a252a954f23912547d1e8a3b5ed6e1bfd7097821233fa0538f3db854fee6"</span>
},
<span class='ident'>Test</span> {
<span class='ident'>input</span>: <span class='string'>"The quick brown fox jumps over the lazy dog."</span>,
<span class='ident'>output_str</span>: <span class='string'>"91ea1245f20d46ae9a037a989f54f1f790f0a47607eeb8a14d12890cea77a1bbc6c7ed9cf205e67b7f2b8fd4c7dfd3a7a8617e45f3c463d481c7e586c39ac1ed"</span>
},
];
<span class='kw'>let</span> <span class='ident'>tests</span> <span class='op'>=</span> <span class='ident'>wikipedia_tests</span>;
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>sh</span> <span class='op'>=</span> <span class='ident'>Box</span>::<span class='ident'>new</span>(<span class='ident'>Sha512</span>::<span class='ident'>new</span>());
<span class='ident'>test_hash</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='kw-2'>*</span><span class='ident'>sh</span>, <span class='kw-2'>&</span><span class='ident'>tests</span>[..]);
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='kw'>fn</span> <span class='ident'>test_sha384</span>() {
<span class='comment'>// Examples from wikipedia</span>
<span class='kw'>let</span> <span class='ident'>wikipedia_tests</span> <span class='op'>=</span> <span class='macro'>vec</span><span class='macro'>!</span>[
<span class='ident'>Test</span> {
<span class='ident'>input</span>: <span class='string'>""</span>,
<span class='ident'>output_str</span>: <span class='string'>"38b060a751ac96384cd9327eb1b1e36a21fdb71114be07434c0cc7bf63f6e1da274edebfe76f65fbd51ad2f14898b95b"</span>
},
<span class='ident'>Test</span> {
<span class='ident'>input</span>: <span class='string'>"The quick brown fox jumps over the lazy dog"</span>,
<span class='ident'>output_str</span>: <span class='string'>"ca737f1014a48f4c0b6dd43cb177b0afd9e5169367544c494011e3317dbf9a509cb1e5dc1e85a941bbee3d7f2afbc9b1"</span>
},
<span class='ident'>Test</span> {
<span class='ident'>input</span>: <span class='string'>"The quick brown fox jumps over the lazy dog."</span>,
<span class='ident'>output_str</span>: <span class='string'>"ed892481d8272ca6df370bf706e4d7bc1b5739fa2177aae6c50e946678718fc67a7af2819a021c2fc34e91bdb63409d7"</span>
},
];
<span class='kw'>let</span> <span class='ident'>tests</span> <span class='op'>=</span> <span class='ident'>wikipedia_tests</span>;
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>sh</span> <span class='op'>=</span> <span class='ident'>Box</span>::<span class='ident'>new</span>(<span class='ident'>Sha384</span>::<span class='ident'>new</span>());
<span class='ident'>test_hash</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='kw-2'>*</span><span class='ident'>sh</span>, <span class='kw-2'>&</span><span class='ident'>tests</span>[..]);
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='kw'>fn</span> <span class='ident'>test_sha512_256</span>() {
<span class='comment'>// Examples from wikipedia</span>
<span class='kw'>let</span> <span class='ident'>wikipedia_tests</span> <span class='op'>=</span> <span class='macro'>vec</span><span class='macro'>!</span>[
<span class='ident'>Test</span> {
<span class='ident'>input</span>: <span class='string'>""</span>,
<span class='ident'>output_str</span>: <span class='string'>"c672b8d1ef56ed28ab87c3622c5114069bdd3ad7b8f9737498d0c01ecef0967a"</span>
},
<span class='ident'>Test</span> {
<span class='ident'>input</span>: <span class='string'>"The quick brown fox jumps over the lazy dog"</span>,
<span class='ident'>output_str</span>: <span class='string'>"dd9d67b371519c339ed8dbd25af90e976a1eeefd4ad3d889005e532fc5bef04d"</span>
},
<span class='ident'>Test</span> {
<span class='ident'>input</span>: <span class='string'>"The quick brown fox jumps over the lazy dog."</span>,
<span class='ident'>output_str</span>: <span class='string'>"1546741840f8a492b959d9b8b2344b9b0eb51b004bba35c0aebaac86d45264c3"</span>
},
];
<span class='kw'>let</span> <span class='ident'>tests</span> <span class='op'>=</span> <span class='ident'>wikipedia_tests</span>;
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>sh</span> <span class='op'>=</span> <span class='ident'>Box</span>::<span class='ident'>new</span>(<span class='ident'>Sha512Trunc256</span>::<span class='ident'>new</span>());
<span class='ident'>test_hash</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='kw-2'>*</span><span class='ident'>sh</span>, <span class='kw-2'>&</span><span class='ident'>tests</span>[..]);
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='kw'>fn</span> <span class='ident'>test_sha512_224</span>() {
<span class='comment'>// Examples from wikipedia</span>
<span class='kw'>let</span> <span class='ident'>wikipedia_tests</span> <span class='op'>=</span> <span class='macro'>vec</span><span class='macro'>!</span>[
<span class='ident'>Test</span> {
<span class='ident'>input</span>: <span class='string'>""</span>,
<span class='ident'>output_str</span>: <span class='string'>"6ed0dd02806fa89e25de060c19d3ac86cabb87d6a0ddd05c333b84f4"</span>
},
<span class='ident'>Test</span> {
<span class='ident'>input</span>: <span class='string'>"The quick brown fox jumps over the lazy dog"</span>,
<span class='ident'>output_str</span>: <span class='string'>"944cd2847fb54558d4775db0485a50003111c8e5daa63fe722c6aa37"</span>
},
<span class='ident'>Test</span> {
<span class='ident'>input</span>: <span class='string'>"The quick brown fox jumps over the lazy dog."</span>,
<span class='ident'>output_str</span>: <span class='string'>"6d6a9279495ec4061769752e7ff9c68b6b0b3c5a281b7917ce0572de"</span>
},
];
<span class='kw'>let</span> <span class='ident'>tests</span> <span class='op'>=</span> <span class='ident'>wikipedia_tests</span>;
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>sh</span> <span class='op'>=</span> <span class='ident'>Box</span>::<span class='ident'>new</span>(<span class='ident'>Sha512Trunc224</span>::<span class='ident'>new</span>());
<span class='ident'>test_hash</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='kw-2'>*</span><span class='ident'>sh</span>, <span class='kw-2'>&</span><span class='ident'>tests</span>[..]);
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='kw'>fn</span> <span class='ident'>test_sha256</span>() {
<span class='comment'>// Examples from wikipedia</span>
<span class='kw'>let</span> <span class='ident'>wikipedia_tests</span> <span class='op'>=</span> <span class='macro'>vec</span><span class='macro'>!</span>[
<span class='ident'>Test</span> {
<span class='ident'>input</span>: <span class='string'>""</span>,
<span class='ident'>output_str</span>: <span class='string'>"e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"</span>
},
<span class='ident'>Test</span> {
<span class='ident'>input</span>: <span class='string'>"The quick brown fox jumps over the lazy dog"</span>,
<span class='ident'>output_str</span>: <span class='string'>"d7a8fbb307d7809469ca9abcb0082e4f8d5651e46d3cdb762d02d0bf37c9e592"</span>
},
<span class='ident'>Test</span> {
<span class='ident'>input</span>: <span class='string'>"The quick brown fox jumps over the lazy dog."</span>,
<span class='ident'>output_str</span>: <span class='string'>"ef537f25c895bfa782526529a9b63d97aa631564d5d789c2b765448c8635fb6c"</span>
},
];
<span class='kw'>let</span> <span class='ident'>tests</span> <span class='op'>=</span> <span class='ident'>wikipedia_tests</span>;
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>sh</span> <span class='op'>=</span> <span class='ident'>Box</span>::<span class='ident'>new</span>(<span class='ident'>Sha256</span>::<span class='ident'>new</span>());
<span class='ident'>test_hash</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='kw-2'>*</span><span class='ident'>sh</span>, <span class='kw-2'>&</span><span class='ident'>tests</span>[..]);
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='kw'>fn</span> <span class='ident'>test_sha224</span>() {
<span class='comment'>// Examples from wikipedia</span>
<span class='kw'>let</span> <span class='ident'>wikipedia_tests</span> <span class='op'>=</span> <span class='macro'>vec</span><span class='macro'>!</span>[
<span class='ident'>Test</span> {
<span class='ident'>input</span>: <span class='string'>""</span>,
<span class='ident'>output_str</span>: <span class='string'>"d14a028c2a3a2bc9476102bb288234c415a2b01f828ea62ac5b3e42f"</span>
},
<span class='ident'>Test</span> {
<span class='ident'>input</span>: <span class='string'>"The quick brown fox jumps over the lazy dog"</span>,
<span class='ident'>output_str</span>: <span class='string'>"730e109bd7a8a32b1cb9d9a09aa2325d2430587ddbc0c38bad911525"</span>
},
<span class='ident'>Test</span> {
<span class='ident'>input</span>: <span class='string'>"The quick brown fox jumps over the lazy dog."</span>,
<span class='ident'>output_str</span>: <span class='string'>"619cba8e8e05826e9b8c519c0a5c68f4fb653e8a3d8aa04bb2c8cd4c"</span>
},
];
<span class='kw'>let</span> <span class='ident'>tests</span> <span class='op'>=</span> <span class='ident'>wikipedia_tests</span>;
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>sh</span> <span class='op'>=</span> <span class='ident'>Box</span>::<span class='ident'>new</span>(<span class='ident'>Sha224</span>::<span class='ident'>new</span>());
<span class='ident'>test_hash</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='kw-2'>*</span><span class='ident'>sh</span>, <span class='kw-2'>&</span><span class='ident'>tests</span>[..]);
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='kw'>fn</span> <span class='ident'>test_1million_random_sha512</span>() {
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>sh</span> <span class='op'>=</span> <span class='ident'>Sha512</span>::<span class='ident'>new</span>();
<span class='ident'>test_digest_1million_random</span>(
<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>sh</span>,
<span class='number'>128</span>,
<span class='string'>"e718483d0ce769644e2e42c7bc15b4638e1f98b13b2044285632a803afa973ebde0ff244877ea60a4cb0432ce577c31beb009c5c2c49aa2e4eadb217ad8cc09b"</span>);
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='kw'>fn</span> <span class='ident'>test_1million_random_sha256</span>() {
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>sh</span> <span class='op'>=</span> <span class='ident'>Sha256</span>::<span class='ident'>new</span>();
<span class='ident'>test_digest_1million_random</span>(
<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>sh</span>,
<span class='number'>64</span>,
<span class='string'>"cdc76e5c9914fb9281a1c7e284d73e67f1809a48a497200e046d39ccc7112cd0"</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'>test</span>::<span class='ident'>Bencher</span>;
<span class='kw'>use</span> <span class='ident'>digest</span>::<span class='ident'>Digest</span>;
<span class='kw'>use</span> <span class='ident'>sha2</span>::{<span class='ident'>STATE_LEN</span>, <span class='ident'>BLOCK_LEN</span>};
<span class='kw'>use</span> <span class='ident'>sha2</span>::{<span class='ident'>Sha256</span>, <span class='ident'>Sha512</span>, <span class='ident'>sha256_digest_block_u32</span>, <span class='ident'>sha512_digest_block_u64</span>};
<span class='attribute'>#[<span class='ident'>bench</span>]</span>
<span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>sha256_block</span>(<span class='ident'>bh</span>: <span class='op'>&</span> <span class='kw-2'>mut</span> <span class='ident'>Bencher</span>) {
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>state</span> <span class='op'>=</span> [<span class='number'>0u32</span>; <span class='ident'>STATE_LEN</span>];
<span class='kw'>let</span> <span class='ident'>words</span> <span class='op'>=</span> [<span class='number'>1u32</span>; <span class='ident'>BLOCK_LEN</span>];
<span class='ident'>bh</span>.<span class='ident'>iter</span>( <span class='op'>||</span> {
<span class='ident'>sha256_digest_block_u32</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>state</span>, <span class='kw-2'>&</span><span class='ident'>words</span>);
});
<span class='ident'>bh</span>.<span class='ident'>bytes</span> <span class='op'>=</span> <span class='number'>64u64</span>;
}
<span class='attribute'>#[<span class='ident'>bench</span>]</span>
<span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>sha512_block</span>(<span class='ident'>bh</span>: <span class='op'>&</span> <span class='kw-2'>mut</span> <span class='ident'>Bencher</span>) {
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>state</span> <span class='op'>=</span> [<span class='number'>0u64</span>; <span class='ident'>STATE_LEN</span>];
<span class='kw'>let</span> <span class='ident'>words</span> <span class='op'>=</span> [<span class='number'>1u64</span>; <span class='ident'>BLOCK_LEN</span>];
<span class='ident'>bh</span>.<span class='ident'>iter</span>( <span class='op'>||</span> {
<span class='ident'>sha512_digest_block_u64</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>state</span>, <span class='kw-2'>&</span><span class='ident'>words</span>);
});
<span class='ident'>bh</span>.<span class='ident'>bytes</span> <span class='op'>=</span> <span class='number'>128u64</span>;
}
<span class='attribute'>#[<span class='ident'>bench</span>]</span>
<span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>sha256_10</span>(<span class='ident'>bh</span>: <span class='op'>&</span> <span class='kw-2'>mut</span> <span class='ident'>Bencher</span>) {
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>sh</span> <span class='op'>=</span> <span class='ident'>Sha256</span>::<span class='ident'>new</span>();
<span class='kw'>let</span> <span class='ident'>bytes</span> <span class='op'>=</span> [<span class='number'>1u8</span>; <span class='number'>10</span>];
<span class='ident'>bh</span>.<span class='ident'>iter</span>( <span class='op'>||</span> {
<span class='ident'>sh</span>.<span class='ident'>input</span>(<span class='kw-2'>&</span><span class='ident'>bytes</span>);
});
<span class='ident'>bh</span>.<span class='ident'>bytes</span> <span class='op'>=</span> <span class='ident'>bytes</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'>sha256_1k</span>(<span class='ident'>bh</span>: <span class='op'>&</span> <span class='kw-2'>mut</span> <span class='ident'>Bencher</span>) {
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>sh</span> <span class='op'>=</span> <span class='ident'>Sha256</span>::<span class='ident'>new</span>();
<span class='kw'>let</span> <span class='ident'>bytes</span> <span class='op'>=</span> [<span class='number'>1u8</span>; <span class='number'>1024</span>];
<span class='ident'>bh</span>.<span class='ident'>iter</span>( <span class='op'>||</span> {
<span class='ident'>sh</span>.<span class='ident'>input</span>(<span class='kw-2'>&</span><span class='ident'>bytes</span>);
});
<span class='ident'>bh</span>.<span class='ident'>bytes</span> <span class='op'>=</span> <span class='ident'>bytes</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'>sha256_64k</span>(<span class='ident'>bh</span>: <span class='op'>&</span> <span class='kw-2'>mut</span> <span class='ident'>Bencher</span>) {
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>sh</span> <span class='op'>=</span> <span class='ident'>Sha256</span>::<span class='ident'>new</span>();
<span class='kw'>let</span> <span class='ident'>bytes</span> <span class='op'>=</span> [<span class='number'>1u8</span>; <span class='number'>65536</span>];
<span class='ident'>bh</span>.<span class='ident'>iter</span>( <span class='op'>||</span> {
<span class='ident'>sh</span>.<span class='ident'>input</span>(<span class='kw-2'>&</span><span class='ident'>bytes</span>);
});
<span class='ident'>bh</span>.<span class='ident'>bytes</span> <span class='op'>=</span> <span class='ident'>bytes</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'>sha512_10</span>(<span class='ident'>bh</span>: <span class='op'>&</span> <span class='kw-2'>mut</span> <span class='ident'>Bencher</span>) {
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>sh</span> <span class='op'>=</span> <span class='ident'>Sha512</span>::<span class='ident'>new</span>();
<span class='kw'>let</span> <span class='ident'>bytes</span> <span class='op'>=</span> [<span class='number'>1u8</span>; <span class='number'>10</span>];
<span class='ident'>bh</span>.<span class='ident'>iter</span>( <span class='op'>||</span> {
<span class='ident'>sh</span>.<span class='ident'>input</span>(<span class='kw-2'>&</span><span class='ident'>bytes</span>);
});
<span class='ident'>bh</span>.<span class='ident'>bytes</span> <span class='op'>=</span> <span class='ident'>bytes</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'>sha512_1k</span>(<span class='ident'>bh</span>: <span class='op'>&</span> <span class='kw-2'>mut</span> <span class='ident'>Bencher</span>) {
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>sh</span> <span class='op'>=</span> <span class='ident'>Sha512</span>::<span class='ident'>new</span>();
<span class='kw'>let</span> <span class='ident'>bytes</span> <span class='op'>=</span> [<span class='number'>1u8</span>; <span class='number'>1024</span>];
<span class='ident'>bh</span>.<span class='ident'>iter</span>( <span class='op'>||</span> {
<span class='ident'>sh</span>.<span class='ident'>input</span>(<span class='kw-2'>&</span><span class='ident'>bytes</span>);
});
<span class='ident'>bh</span>.<span class='ident'>bytes</span> <span class='op'>=</span> <span class='ident'>bytes</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'>sha512_64k</span>(<span class='ident'>bh</span>: <span class='op'>&</span> <span class='kw-2'>mut</span> <span class='ident'>Bencher</span>) {
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>sh</span> <span class='op'>=</span> <span class='ident'>Sha512</span>::<span class='ident'>new</span>();
<span class='kw'>let</span> <span class='ident'>bytes</span> <span class='op'>=</span> [<span class='number'>1u8</span>; <span class='number'>65536</span>];
<span class='ident'>bh</span>.<span class='ident'>iter</span>( <span class='op'>||</span> {
<span class='ident'>sh</span>.<span class='ident'>input</span>(<span class='kw-2'>&</span><span class='ident'>bytes</span>);
});
<span class='ident'>bh</span>.<span class='ident'>bytes</span> <span class='op'>=</span> <span class='ident'>bytes</span>.<span class='ident'>len</span>() <span class='kw'>as</span> <span class='ident'>u64</span>;
}
}
</pre>
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