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use crate::constants::CRYPTO_HASH_SHA512_BYTES;
use crate::sha512::*;
pub type Digest = [u8; CRYPTO_HASH_SHA512_BYTES];
pub fn crypto_hash_sha512(output: &mut Digest, input: &[u8]) {
let mut state = crypto_hash_sha512_init();
crypto_hash_sha512_update(&mut state, input);
crypto_hash_sha512_final(state, output);
}
pub struct Sha512State {
pub(super) hasher: Sha512,
}
impl Default for Sha512State {
fn default() -> Self {
Self {
hasher: Sha512::new(),
}
}
}
pub fn crypto_hash_sha512_init() -> Sha512State {
Sha512State::default()
}
pub fn crypto_hash_sha512_update(state: &mut Sha512State, input: &[u8]) {
state.hasher.update(input);
}
pub fn crypto_hash_sha512_final(state: Sha512State, output: &mut Digest) {
state.hasher.finalize_into_bytes(output)
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn test_crypto_hash_sha512() {
use sodiumoxide::crypto::hash;
use crate::rng::randombytes_buf;
let r = randombytes_buf(64);
let their_digest = hash::hash(&r);
let mut our_digest = [0u8; CRYPTO_HASH_SHA512_BYTES];
crypto_hash_sha512(&mut our_digest, &r);
assert_eq!(their_digest.as_ref(), our_digest);
}
#[test]
fn test_crypto_hash_sha512_update() {
use sodiumoxide::crypto::hash;
use crate::rng::randombytes_buf;
let mut their_state = hash::State::new();
let mut our_state = crypto_hash_sha512_init();
for _ in 0..10 {
let r = randombytes_buf(64);
their_state.update(&r);
crypto_hash_sha512_update(&mut our_state, &r);
}
let their_digest = their_state.finalize();
let mut our_digest = [0u8; CRYPTO_HASH_SHA512_BYTES];
crypto_hash_sha512_final(our_state, &mut our_digest);
assert_eq!(their_digest.as_ref(), our_digest);
}
}