SHA-512, The 512-bit output version of the SHA-2 (Secure Hash Algorithm 2) family. It provides longer hash output than SHA-256 and is preferred for applications requiring higher security levels.
Technical Specifications
- Hash Length:
- 512 bit (128 hex characters)
- Security Level:
- Very high - Cryptographically secure
- Block Size:
- 1024 bit
- Maximum Message Size:
- 2^128 - 1 bit
- Speed:
- High performance, optimized for 64-bit systems
Usage Areas
- Digital signatures and certificates (X.509)
- Password hashing (PBKDF2, bcrypt)
- High security applications
- Blockchain technologies
- Secure protocols and encryption systems
Features
- Same input always produces the same hash (deterministic)
- Impossible to derive original data from hash (one-way)
- Avalanche effect: Small input changes produce completely different hash
- Collision resistance: Two different inputs cannot produce the same hash (practically)
- Can be faster than SHA-256 on 64-bit systems
Standards and References
- FIPS PUB 180-4 (SHA-2 Standard)
- ISO/IEC 10118-3
- RFC 6234