Generate HMAC signatures for API authentication using SHA256, SHA1, and MD5 algorithms
API Signature Generator
Signature Configuration
Configure your HMAC signature
Algorithm
Output Format
API Secret *
HTTP Method
Request Path
Query Parameters
Request Body (JSON)
Timestamp (Unix epoch)
Or use custom payload (overrides above)
Leave empty to auto-build from method, path, params, body, and timestamp
Generated Signature
HMAC signature will appear here
HMAC signatures provide message authentication using a secret key. The signature is generated by hashing the payload with your API secret. Use SHA256 for new implementations. Always include timestamps to prevent replay attacks.