1 unstable release
0.1.0 | Jul 11, 2024 |
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#35 in Programming languages
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rustc-stable-hash
A stable hashing algorithm used by rustc
: cross-platform, deterministic, not secure.
This crate provides facilities with the StableHasher
structure to create stable hashers over unstable hashers by abstracting over them the handling of endian-ness and the target usize
/isize
bit size difference.
Currently, this crate provides it's own implementation of 128-bit SipHasher
: SipHasher128
; with StableSipHasher128
for the stable variant.
Usage
use rustc_stable_hash::hashers::{StableSipHasher128, SipHasher128Hash};
use rustc_stable_hash::FromStableHash;
use std::hash::Hasher;
struct Hash128([u64; 2]);
impl FromStableHash for Hash128 {
type Hash = SipHasher128Hash;
fn from(SipHasher128Hash(hash): SipHasher128Hash) -> Hash128 {
Hash128(hash)
}
}
let mut hasher = StableSipHasher128::new();
hasher.write_usize(0xFA);
let hash: Hash128 = hasher.finish();