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WorkspaceHMAC Generator
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HMAC Generator

Local processing
Generate HMAC signatures using various algorithms
Input
Message
Secret Key
HMAC-SHA256
HMAC Result
Click “Generate HMAC” to create a signature
About HMAC
HMAC combines a secret key and a hash function to authenticate a message. A plain hash alone does not authenticate its sender.
Use HMAC for API request signing and webhook checks when both parties share a secret key.
Algorithm Comparison
HMAC-SHA1160-bit outputLegacy, not recommended for security
HMAC-SHA256256-bit outputMost commonly used, good security
HMAC-SHA384384-bit outputHigher security, truncated SHA-512
HMAC-SHA512512-bit outputHighest security, best for sensitive data
Common Use Cases
  • API authentication signatures
  • Webhook payload verification
  • Session token validation
  • Data integrity checks
  • OAuth 1.0 signatures