Hash Generator
Generate MD5, SHA-1, SHA-256, SHA-384, and SHA-512 hashes from text or files. Compare hashes, generate HMACs, and verify checksums.
What is a Hash Generator?
A hash generator computes cryptographic hash values from text or files. A hash function takes input of any size and produces a fixed-size output (digest) that uniquely represents the input. This tool supports MD5, SHA-1, SHA-256, SHA-384, SHA-512, and HMAC variants using the Web Crypto API for secure client-side computation.
Common Use Cases
- •Generating checksums to verify file integrity
- •Creating password hashes for security testing
- •Computing HMAC signatures for API authentication
- •Verifying downloaded files against published hashes
- •Hashing sensitive data for comparison without exposing originals
Frequently Asked Questions
What is the difference between MD5 and SHA-256?
MD5 produces a 128-bit hash and is fast but cryptographically broken — collisions can be generated easily. SHA-256 produces a 256-bit hash and is currently considered secure. Use SHA-256 or SHA-512 for any security-sensitive application.
What is HMAC?
HMAC (Hash-based Message Authentication Code) combines a hash function with a secret key to verify both data integrity and authenticity. Unlike a plain hash, HMAC proves the message was created by someone who knows the secret key.