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HMAC Calculator

Compute HMAC message authentication codes with SHA-1/SHA-256/SHA-384/SHA-512.

Encryption / Hash
Input text
Secret key
Algorithm:
HMAC Result
Waiting for input...

What is HMAC?

HMAC (Hash-based Message Authentication Code) combines a secret key with a hash function to verify data integrity and authenticity.

Supported Algorithms

  • HMAC-MD5
  • HMAC-SHA1
  • HMAC-SHA256
  • HMAC-SHA384
  • HMAC-SHA512

Use Cases

  • API authentication signatures
  • Message integrity verification
  • Webhook validation