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HMAC Generator

Generate HMAC signatures using various cryptographic hash functions.

Common Examples:
Simple Example API Signature
HMAC Signature:
Algorithm: , Format:

How to Use

  1. Enter the message you want to sign
  2. Provide a secret key
  3. Select hash algorithm and output format
  4. Generate and copy the HMAC signature
Important: Keep your secret key secure. HMAC signatures are only secure if the key remains confidential. MD5 and SHA-1 are shown for compatibility but not recommended for security purposes.