BLAKE2b Hash Generator
Compute a BLAKE2b digest — faster than MD5 on 64-bit hardware while being as secure as SHA-3.
Input
BLAKE2b
Enter something above to see the result.
Fast and keyed by design
BLAKE2 came out of the SHA-3 competition finalist BLAKE, tuned for speed on ordinary CPUs. On 64-bit hardware BLAKE2b outruns MD5 while offering security comparable to SHA-3.
It takes a key directly, so it is a MAC without the nested-hash dance HMAC requires. Argon2 — the current recommendation for password hashing — is built on BLAKE2b for exactly this reason.
- BLAKE2b — 64-bit words, digests up to 64 bytes. Use it on any modern machine.
- BLAKE2s — 32-bit words, digests up to 32 bytes. For embedded and 32-bit targets.
Frequently asked questions
BLAKE2 or SHA-256?
SHA-256 where interoperability matters — it is everywhere and hardware-accelerated. BLAKE2 where you control both ends and want throughput, or where you want a keyed hash without HMAC.
What about BLAKE3?
BLAKE3 is faster still, via a tree structure that parallelises. It is not implemented here yet; BLAKE2b covers the same security ground.