lighthouse/eth2/utils/hashing/src/lib.rs
Paul Hauner 35c914baa6
Revert "Merge pull request #200 from sigp/new-structure"
This reverts commit d7a3545be1, reversing
changes made to 1da06c156c.
2019-02-14 12:09:18 +11:00

29 lines
753 B
Rust

use tiny_keccak::Keccak;
pub fn hash(input: &[u8]) -> Vec<u8> {
let mut keccak = Keccak::new_keccak256();
keccak.update(input);
let mut result = vec![0; 32];
keccak.finalize(result.as_mut_slice());
result
}
#[cfg(test)]
mod tests {
use super::*;
use std::convert::From;
#[test]
fn test_hashing() {
let input: Vec<u8> = From::from("hello");
let output = hash(input.as_ref());
let expected = &[
0x1c, 0x8a, 0xff, 0x95, 0x06, 0x85, 0xc2, 0xed, 0x4b, 0xc3, 0x17, 0x4f, 0x34, 0x72,
0x28, 0x7b, 0x56, 0xd9, 0x51, 0x7b, 0x9c, 0x94, 0x81, 0x27, 0x31, 0x9a, 0x09, 0xa7,
0xa3, 0x6d, 0xea, 0xc8,
];
assert_eq!(expected, output.as_slice());
}
}