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@ Mike Dilger
2025-02-12 19:41:33
// blake3 = "1.5"
// digest = "0.10"
// ed25519-dalek = { version = "2.1", features = [ "rand_core", "digest" ] }
use digest::generic_array::typenum::U64;
use digest::generic_array::GenericArray;
use digest::{FixedOutput, HashMarker, OutputSizeUser, Reset, Update};
/// This is a Blake3 Hasher implementing the traits required for use in
/// the ed25519 construction in place of SHA-512
#[derive(Clone)]
pub struct Blake3 {
pub(crate) h: blake3::Hasher,
}
impl Update for Blake3 {
#[inline]
fn update(&mut self, data: &[u8]) {
self.h.update(data.as_ref());
}
}
impl Reset for Blake3 {
#[inline]
fn reset(&mut self) {
self.h.reset();
}
}
impl Default for Blake3 {
#[inline]
fn default() -> Self {
Blake3 {
h: blake3::Hasher::new(),
}
}
}
impl FixedOutput for Blake3 {
#[inline]
fn finalize_into(self, out: &mut GenericArray<u8, Self::OutputSize>) {
self.h.finalize_xof().fill(out);
}
}
impl OutputSizeUser for Blake3 {
type OutputSize = U64;
}
impl HashMarker for Blake3 {}