libreauth/
hash.rs

1//! Hash functions used in the library
2
3use std::fmt;
4use std::str::FromStr;
5
6pub enum HashFunctionError {
7	ImportError,
8}
9
10/// ## C interface
11/// The C interface uses an enum of type `libreauth_hash_function` and
12/// the members has been renamed as follows:
13/// <table>
14///     <thead>
15///         <tr>
16///             <th>Rust</th>
17///             <th>C</th>
18///         </tr>
19///     </thead>
20///     <tbody>
21///         <tr>
22///             <td>Sha1</td>
23///             <td>LIBREAUTH_HASH_SHA_1</td>
24///         </tr>
25///         <tr>
26///             <td>Sha224</td>
27///             <td>LIBREAUTH_HASH_SHA_224</td>
28///         </tr>
29///         <tr>
30///             <td>Sha256</td>
31///             <td>LIBREAUTH_HASH_SHA_256</td>
32///         </tr>
33///         <tr>
34///             <td>Sha384</td>
35///             <td>LIBREAUTH_HASH_SHA_384</td>
36///         </tr>
37///         <tr>
38///             <td>Sha512</td>
39///             <td>LIBREAUTH_HASH_SHA_512</td>
40///         </tr>
41///         <tr>
42///             <td>Sha512Trunc224</td>
43///             <td>LIBREAUTH_HASH_SHA_512_TRUNC_224</td>
44///         </tr>
45///         <tr>
46///             <td>Sha512Trunc256</td>
47///             <td>LIBREAUTH_HASH_SHA_512_TRUNC_256</td>
48///         </tr>
49///         <tr>
50///             <td>Sha3_224</td>
51///             <td>LIBREAUTH_HASH_SHA_3_224</td>
52///         </tr>
53///         <tr>
54///             <td>Sha3_256</td>
55///             <td>LIBREAUTH_HASH_SHA_3_256</td>
56///         </tr>
57///         <tr>
58///             <td>Sha3_384</td>
59///             <td>LIBREAUTH_HASH_SHA_3_384</td>
60///         </tr>
61///         <tr>
62///             <td>Sha3_512</td>
63///             <td>LIBREAUTH_HASH_SHA_3_512</td>
64///         </tr>
65///         <tr>
66///             <td>Keccak224</td>
67///             <td>LIBREAUTH_HASH_KECCAK_224</td>
68///         </tr>
69///         <tr>
70///             <td>Keccak256</td>
71///             <td>LIBREAUTH_HASH_KECCAK_256</td>
72///         </tr>
73///         <tr>
74///             <td>Keccak384</td>
75///             <td>LIBREAUTH_HASH_KECCAK_384</td>
76///         </tr>
77///         <tr>
78///             <td>Keccak512</td>
79///             <td>LIBREAUTH_HASH_KECCAK_512</td>
80///         </tr>
81///     </tbody>
82/// </table>
83#[repr(C)]
84#[derive(Clone, Copy, Eq, PartialEq)]
85pub enum HashFunction {
86	Sha1 = 1,
87	Sha224 = 2,
88	Sha256 = 3,
89	Sha384 = 4,
90	Sha512 = 5,
91	Sha512Trunc224 = 6,
92	Sha512Trunc256 = 7,
93	Sha3_224 = 8,
94	Sha3_256 = 9,
95	Sha3_384 = 10,
96	Sha3_512 = 11,
97	Keccak224 = 12,
98	Keccak256 = 13,
99	Keccak384 = 14,
100	Keccak512 = 15,
101}
102
103impl fmt::Display for HashFunction {
104	fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
105		let s = match self {
106			HashFunction::Sha1 => "SHA1",
107			HashFunction::Sha224 => "SHA224",
108			HashFunction::Sha256 => "SHA256",
109			HashFunction::Sha384 => "SHA384",
110			HashFunction::Sha512 => "SHA512",
111			HashFunction::Sha512Trunc224 => "SHA512-224",
112			HashFunction::Sha512Trunc256 => "SHA512-256",
113			HashFunction::Sha3_224 => "SHA3-224",
114			HashFunction::Sha3_256 => "SHA3-256",
115			HashFunction::Sha3_384 => "SHA3-384",
116			HashFunction::Sha3_512 => "SHA3-512",
117			HashFunction::Keccak224 => "Keccak224",
118			HashFunction::Keccak256 => "Keccak256",
119			HashFunction::Keccak384 => "Keccak384",
120			HashFunction::Keccak512 => "Keccak512",
121		};
122		write!(f, "{}", s)
123	}
124}
125
126impl FromStr for HashFunction {
127	type Err = HashFunctionError;
128
129	fn from_str(data: &str) -> Result<Self, Self::Err> {
130		Ok(match data.to_lowercase().as_str() {
131			"sha1" => HashFunction::Sha1,
132			"sha224" => HashFunction::Sha224,
133			"sha256" => HashFunction::Sha256,
134			"sha384" => HashFunction::Sha384,
135			"sha512" => HashFunction::Sha512,
136			"sha512-224" | "sha512t224" => HashFunction::Sha512Trunc224,
137			"sha512-256" | "sha512t256" => HashFunction::Sha512Trunc256,
138			"sha3-224" => HashFunction::Sha3_224,
139			"sha3-256" => HashFunction::Sha3_256,
140			"sha3-384" => HashFunction::Sha3_384,
141			"sha3-512" => HashFunction::Sha3_512,
142			"keccak224" => HashFunction::Keccak224,
143			"keccak256" => HashFunction::Keccak256,
144			"keccak384" => HashFunction::Keccak384,
145			"keccak512" => HashFunction::Keccak512,
146			_ => {
147				return Err(HashFunctionError::ImportError);
148			}
149		})
150	}
151}
libreauth/hash.rs

libreauth/
hash.rs
