SHA-224, The 224-bit output version of the SHA-2 (Secure Hash Algorithm 2) family. It's a truncated version of SHA-256, designed for applications requiring shorter hash output.
Technical Specifications
- Hash Length:
- 224 bit (56 hex characters)
- Security Level:
- High - Cryptographically secure
- Block Size:
- 512 bit
- Maximum Message Size:
- 2^64 - 1 bit
- Speed:
- High performance, hardware and software optimization available
Usage Areas
- Digital signatures and certificates
- Secure protocols
- Data integrity verification
- Applications requiring shorter hash output
Features
- Truncated version of SHA-256: Uses first 224 bits
- 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
- Same algorithm as SHA-256, only output length differs
Standards and References
- FIPS PUB 180-4 (SHA-2 Standard)
- ISO/IEC 10118-3
- RFC 6234