tiny-keccak
An implementation of Keccak derived functions specified in FIPS-202, SP800-185 and KangarooTwelve.
The Keccak-f[1600] permutation is fully unrolled; it's nearly as fast as the Keccak team's optimized permutation.
Usage
In your Cargo.toml specify what features (hash functions, you are intending to use). Available options are: cshake, fips202, k12, keccak, kmac, parallel_hash, sha3, shake, sp800, tuple_hash.
[dependencies]
tiny-keccak = { version = "2.0", features = ["sha3"] }
Example
use tiny_keccak::Sha3;
fn main() {
let mut sha3 = Sha3::v256();
let mut output = [0u8; 32];
let expected = b"\
\x64\x4b\xcc\x7e\x56\x43\x73\x04\x09\x99\xaa\xc8\x9e\x76\x22\xf3\
\xca\x71\xfb\xa1\xd9\x72\xfd\x94\xa3\x1c\x3b\xfb\xf2\x4e\x39\x38\
";
sha3.update(b"hello");
sha3.update(b" ");
sha3.update(b"world");
sha3.finalize(&mut output);
assert_eq!(expected, &output);
}
Benchmarks
Benchmarked with rust-crypto sha3 on:
MacBook Pro (Retina, 15-inch, Mid 2015)
2,5 GHz Intel Core i7
16 GB 1600 MHz DDR3
Intel Iris Pro 1536 MB
Benchmark code is available here
running 4 tests
test rust_crypto_sha3_256_input_32_bytes ... bench: 677 ns/iter (+/- 113) = 47 MB/s
test rust_crypto_sha3_256_input_4096_bytes ... bench: 17,619 ns/iter (+/- 4,174) = 232 MB/s
test tiny_keccak_sha3_256_input_32_bytes ... bench: 569 ns/iter (+/- 204) = 56 MB/s
test tiny_keccak_sha3_256_input_4096_bytes ... bench: 17,185 ns/iter (+/- 4,575) = 238 MB/s
