crypto/sha3/
sha3_512.rs

1use super::keccak::Keccak;
2use crate::{Bytes, Hash, Hasher};
3
4const SHA3_512_RATE: usize = 72;
5const SHA3_512_DOMAIN_SEPARATOR: u8 = 0x06;
6
7/// SHA3-512 hash function (FIPS 202).
8///
9/// Implements the [`Hasher`] trait.
10///
11/// # One-shot API
12///
13/// ```ignore
14/// use crypto::{Hasher, sha3::Sha3_512};
15///
16/// let hash = Sha3_512::hash(b"hello world");
17/// ```
18///
19/// # Incremental API
20///
21/// ```ignore
22/// use crypto::{Hasher, sha3::Sha3_512};
23///
24/// let mut hasher = Sha3_512::new();
25/// hasher.update(b"hello ");
26/// hasher.update(b"world");
27/// let hash = hasher.sum();
28/// ```
29#[derive(Clone)]
30#[cfg_attr(feature = "zeroize", derive(zeroize::Zeroize, zeroize::ZeroizeOnDrop))]
31pub struct Sha3_512 {
32    keccak: Keccak<24>,
33}
34
35impl Sha3_512 {
36    #[inline]
37    pub fn new() -> Self {
38        return Sha3_512 {
39            keccak: Keccak::new(SHA3_512_RATE, SHA3_512_DOMAIN_SEPARATOR),
40        };
41    }
42}
43
44impl Hasher for Sha3_512 {
45    const BLOCK_SIZE: usize = SHA3_512_RATE;
46    const OUTPUT_SIZE: usize = 64;
47
48    #[inline]
49    fn new() -> Self {
50        return Sha3_512::new();
51    }
52
53    #[inline]
54    fn update(&mut self, data: &[u8]) {
55        self.keccak.absorb(data);
56    }
57
58    #[inline]
59    fn sum(mut self) -> Hash {
60        let mut hash = Bytes::<64>::with_length(Self::OUTPUT_SIZE);
61        self.keccak.squeeze(hash.as_mut());
62        return Hash(hash);
63    }
64}
65
66#[cfg(test)]
67mod tests {
68    use super::Sha3_512;
69    use crate::Hasher;
70
71    fn vectors_sha3_512() -> Vec<(Vec<u8>, &'static str)> {
72        vec![
73            (
74                b"".to_vec(),
75                "a69f73cca23a9ac5c8b567dc185a756e97c982164fe25859e0d1dcc1475c80a615b2123af1f5f94c11e3e9402c3ac558f500199d95b6d3e301758586281dcd26",
76            ),
77            (
78                b"abc".to_vec(),
79                "b751850b1a57168a5693cd924b6b096e08f621827444f70d884f5d0240d2712e10e116e9192af3c91a7ec57647e3934057340b4cf408d5a56592f8274eec53f0",
80            ),
81            (
82                b"hello world".to_vec(),
83                "840006653e9ac9e95117a15c915caab81662918e925de9e004f774ff82d7079a40d4d27b1b372657c61d46d470304c88c788b3a4527ad074d1dccbee5dbaa99a",
84            ),
85            (
86                b"The quick brown fox jumps over the lazy dog".to_vec(),
87                "01dedd5de4ef14642445ba5f5b97c15e47b9ad931326e4b0727cd94cefc44fff23f07bf543139939b49128caf436dc1bdee54fcb24023a08d9403f9b4bf0d450",
88            ),
89            (
90                b"The quick brown fox jumps over the lazy dog.".to_vec(),
91                "18f4f4bd419603f95538837003d9d254c26c23765565162247483f65c50303597bc9ce4d289f21d1c2f1f458828e33dc442100331b35e7eb031b5d38ba6460f8",
92            ),
93            (
94                vec![b'a'; 1_000_000],
95                "3c3a876da14034ab60627c077bb98f7e120a2a5370212dffb3385a18d4f38859ed311d0a9d5141ce9cc5c66ee689b266a8aa18ace8282a0e0db596c90b0a7b87",
96            ),
97        ]
98    }
99
100    #[test]
101    fn known_vectors_single_update() {
102        for (input, expected) in vectors_sha3_512() {
103            assert_eq!(hex::encode(<Sha3_512 as Hasher>::hash(&input)), expected);
104        }
105    }
106
107    #[test]
108    fn known_vectors_incremental() {
109        for (input, expected) in vectors_sha3_512() {
110            let mut sha3_512 = <Sha3_512 as Hasher>::new();
111            for chunk in input.chunks(11) {
112                sha3_512.update(chunk);
113            }
114            assert_eq!(hex::encode(sha3_512.sum().as_ref()), expected);
115        }
116    }
117
118    #[test]
119    fn hasher_trait_impl() {
120        for (input, expected) in vectors_sha3_512() {
121            let digest = <Sha3_512 as Hasher>::hash(&input);
122            assert_eq!(hex::encode(digest.as_ref()), expected);
123        }
124    }
125}
crypto/sha3/sha3_512.rs

crypto/sha3/
sha3_512.rs
