BLAKE2b, BLAKE2b fast cryptographic hash
Technical Specifications
- Hash Length:
- 512 bit (128 hex characters) - variable length supported
- Security Level:
- Very high - comparable to SHA-512
- Block Size:
- 1024 bit
- Speed:
- Faster than SHA-3, SHA-512 and MD5
- Optimization:
- Optimized for 64-bit platforms
Usage Areas
- Digital signatures and authentication
- Data integrity verification
- Password hashing (in KDFs like Argon2)
- High-performance applications
- Blockchain and cryptocurrency applications
- File checksum and verification
Features
- Faster than SHA-512: Optimized performance
- Faster than SHA-3: Modern design advantages
- High security: Comparable security guarantees to SHA-512
- Flexible length: Variable hash length from 1 to 512 bits
- Keyed hashing: HMAC-like keyed hash support
- Tree hashing: Parallel hash computation support
- AES-NI hardware support: Optimized performance on modern CPUs
Standards and References
- RFC 7693
- ISO/IEC 10118-3:2018 (BLAKE2 supplement)