Categories
Hash Generator
Generate MD5, SHA-256, SHA-512 hashes for API signatures and data integrity checks
Enter text above to generate hashes
Common Uses
API Signature Verification
Many APIs require HMAC signatures using SHA-256. Hash your request body or parameters to create a signature for authentication.
Data Integrity Checks
Use hashes to verify that data hasn't been modified. Compare hash values before and after transmission to detect changes.
Cache Keys
Generate consistent cache keys by hashing request parameters. This ensures the same inputs always produce the same cache key.
Understanding Cryptographic Hash Functions
Cryptographic hash functions convert input data of any size into a fixed-size output. This free hash generator supports multiple algorithms for different security needs.
Hash Algorithm Comparison
- MD5 - 128-bit, fast but cryptographically broken. Use only for checksums
- SHA-1 - 160-bit, deprecated for security. Legacy systems only
- SHA-256 - 256-bit, recommended for most security applications
- SHA-384 - 384-bit, truncated SHA-512 for performance
- SHA-512 - 512-bit, maximum security for critical applications
When to Use Each Algorithm
- API Signatures - Use SHA-256 for HMAC authentication
- File Checksums - MD5 or SHA-256 for integrity verification
- Password Storage - Never use plain hashes, use bcrypt or Argon2
- Digital Certificates - SHA-256 or SHA-384
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