🛡️ SHA Hash Generator
Generate SHA-1, SHA-256, SHA-512 hash online
✅ SHA-256 and above are currently secure hash algorithms, suitable for data integrity verification
Hash Value
All Algorithms
📚 User Guide
What is SHA？
SHA (Secure Hash Algorithm) is a series of cryptographic hash functions designed by the US National Security Agency. The SHA algorithm series can convert data of any length into a fixed-length hash value.
SHA Algorithm Comparison
| Algorithm | Output length | Security | Recommendation |
|---|---|---|---|
| SHA-1 | 160 bits (40 chars) | ❌ Broken | Not recommended |
| SHA-256 | 256 bits (64 chars) | ✅ Secure | Recommended |
| SHA-512 | 512 bits (128 chars) | ✅ Most secure | High security needs |
Use Cases
- File integrity verification
- Digital signatures
- Password storage (with salt)
- Blockchain technology
- Data deduplication
SHA vs MD5
- SHA-256 outputs longer, lower collision probability
- SHA-256 slower but more secure
- MD5 has proven collision vulnerabilities
- New projects should use SHA-256 or higher
Best Practices
- Password storage: Use SHA-256 + salt + multiple iterations
- File verification: SHA-256 is sufficient
- Digital signatures: SHA-256 or SHA-512
- Blockchain: SHA-256 (Bitcoin uses)