RustCrypto/hashes

View on GitHub

Collection of cryptographic hash functions written in pure Rust

Stars: 2.3k
Forks: 340
Open beginner issues: 0
Indexed issues: 20
Avg merge: 12h 31m
Merged PRs (30d): 2

Dominant language: Rust
License: No license data
Last GitHub push: Sep 1, 2026
Latest indexed: Sep 19, 2026
Contributing guide: No contributing guide
Code of conduct: No code of conduct
Beginner labels: help wanted

Beginner friendly Everything

Open All

20 open issues indexed

`blake2::Blake2b512` does not implement `ZeroizeOnDrop` Open

Difficulty 3/5 1-2 days Newbie friendliness 68/100

RustCrypto/hashes#912 · Opened Aug 27, 2026
sha1-checked: hardware acceleration on arm64 Open

Difficulty 4/5 3-5 days Newbie friendliness 38/100

RustCrypto/hashes#909 · 4 comments · Opened Aug 18, 2026
sha1-checked v0.11.0 release tracking issue Open

Difficulty 5/5 Over a week Newbie friendliness 20/100

RustCrypto/hashes#908 · Opened Aug 12, 2026
blake2b: unusable in XOF fashion. Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

RustCrypto/hashes#763 · 1 comment · Opened Dec 21, 2025
blake2: implement `CustomizedInit` using `digest` macro Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

RustCrypto/hashes#747 · 1 comment · Opened Oct 24, 2025
groestl: add AVX512/GFNI backend Open

performance

Difficulty 4/5 3-5 days Newbie friendliness 35/100

RustCrypto/hashes#718 · 2 comments · Opened Aug 11, 2025
Exposing blake2 compression function Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

RustCrypto/hashes#709 · 5 comments · Opened Jul 21, 2025
skein: improve performance Open

performance

Difficulty 4/5 3-5 days Newbie friendliness 25/100

RustCrypto/hashes#684 · 2 comments · Opened Apr 24, 2025
Potential speed improvements for SHA512 via BMI2 instructions Open

performance

Difficulty 5/5 Over a week Newbie friendliness 25/100

RustCrypto/hashes#640 · 2 reactions · Opened Jan 25, 2025
Use Intel SHA Extensions for SHA-512 Open

performance

Difficulty 4/5 3-5 days Newbie friendliness 38/100

RustCrypto/hashes#634 · 3 comments · Opened Dec 19, 2024
jh: remove dependency on `ppv-lite86` Open

help wanted

Difficulty 5/5 Over a week Newbie friendliness 25/100

RustCrypto/hashes#546 · 2 reactions · Opened Jan 11, 2024
docs for hasher states could use a reference to the `Digest` trait Open

Difficulty 2/5 1-3 hours Newbie friendliness 45/100

RustCrypto/hashes#441 · 5 comments · 3 reactions · Opened Dec 13, 2022
blake2 simd benches produce unexpected results Open

Difficulty 3/5 1-2 days Newbie friendliness 42/100

RustCrypto/hashes#407 · 1 comment · Opened Sep 13, 2022
Blake2 missing functionality while migrating from `blake2-rfc` Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

RustCrypto/hashes#360 · 3 comments · 5 reactions · Opened Feb 14, 2022
sm3: add hardware accelerated backend for ARM targets Open

help wanted performance

Difficulty 4/5 3-5 days Newbie friendliness 35/100

RustCrypto/hashes#329 · Opened Dec 7, 2021
sha2: explore addition of SSE and AVX2 backends for SHA-256 Open

enhancement performance

Difficulty 5/5 Over a week Newbie friendliness 25/100

RustCrypto/hashes#327 · 18 comments · 6 reactions · Opened Nov 30, 2021
`blake2` code size very high (overuse of`#[inline(always)]`?) Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

RustCrypto/hashes#322 · 1 comment · Opened Oct 7, 2021
`const fn` hashing Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

RustCrypto/hashes#288 · 4 comments · 1 reaction · Opened Jul 14, 2021
Port blake2 on coresimd Open

enhancement help wanted

Difficulty 4/5 3-5 days Newbie friendliness 35/100

RustCrypto/hashes#56 · 12 comments · 4 reactions · Opened Jun 21, 2018
Missing hash functions Open

enhancement help wanted

Difficulty 5/5 Over a week Newbie friendliness 20/100

RustCrypto/hashes#1 · 57 comments · 1 reaction · Opened Nov 18, 2016

RustCrypto/hashes

Get new issues in your inbox