Generate high-performance BLAKE2b hashes optimized for 64-bit.
About
BLAKE2b is a high-performance hash function optimized for 64-bit platforms that produces variable-length hashes up to 512 bits, based on the BLAKE finalist from the SHA-3 competition. It is faster than MD5 yet secure.
Specifications
Output Size512 bits
StandardRFC 7693
Standard Year2015
Origin BLAKE2 paper
Origin Year 2013
Use Cases
—High-performance file integrity checks
—Password hashing with key derivation
—Modern cryptographic applications
Frequently Asked Questions
BLAKE2b is a fast modern hash with strong security and good performance on 64-bit systems.
BLAKE2b is typically 2-3x faster than SHA-256 on 64-bit platforms while providing similar or better security. On modern x86-64 processors, BLAKE2b can process data at rates exceeding 1 GB/s per core. The speed advantage comes from fewer rounds and better cache utilization while maintaining security margins.
Yes, BLAKE2b has native keyed mode support (BLAKE2b keyed hashing) which can replace HMAC-SHA256 with better performance. Simply provide a key during initialization. For applications requiring standard HMAC construction (FIPS compliance), use HMAC-BLAKE2b. The keyed mode is faster and simpler than HMAC.