Xxhash Vs Md5 Jun 2026

Attackers can easily generate two different inputs that produce the exact same MD5 hash (a collision).

To help give you the best advice for your project, let me know: What or framework are you using? xxhash vs md5

for: Real-time data processing, fast checksums to detect accidental corruption, and hash table lookups in games or databases. Attackers can easily generate two different inputs that

For the 64‑bit variants, the expected number of collisions aligns almost perfectly with the theoretical birthday bound. In a test generating 100 billion 64‑bit hashes (where 312.5 collisions are expected), XXH3 produced 314 collisions, XXH64 gave 294, and XXH128's low 64 bits produced 291 — all well within the statistically acceptable range. For the 128‑bit version, the probability of a single collision is described as . For the 64‑bit variants, the expected number of

These numbers are not just theoretical. In a Node.js benchmark that compares streaming throughput across multiple platforms, xxHash consistently outperforms MD5 by a huge margin. On macOS arm64 (Apple Clang 17.0.0, Node.js v24), the results are: