google/highwayhash

Health v2 · maintenance only

Flags: no_releases archived

Adoption not part of the score

1605 stars · 189 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

A C++ library providing fast, strong (well-distributed and unpredictable) hash functions: a portable SipHash implementation and HighwayHash, a SIMD-accelerated hash roughly 5x faster than SipHash with security claims. It supports 64/128/256-bit outputs, runtime CPU dispatch, and C-callable bindings.

Use cases

• fast keyed hashing for hash tables
• replace weak non-cryptographic hashes with strong ones
• compute 64/128/256-bit hashes of buffers
• hash data at high throughput with SIMD
• generate checksum-like digests similar to sha1sum
• use SipHash from C code

When to avoid

• you need a general-purpose cryptographic hash like SHA-256 for signatures or integrity verification
• you need streaming/incremental hashing of very large files
• you need a hash for non-security purposes where speed matters more than unpredictability (e.g. xxHash, MurmurHash)

Facets

library · maturity maintenance

cryptography security benchmarking developer-tools security performance developer-tools windows cpp cross-platform hash-functions siphash highwayhash simd keyed-hashing c-plus-plus algorithms linux macos

Member repositories

For agents

markdown · JSON · MCP: product_card(name="google/highwayhash")