HMAC Generator

Generate HMAC signatures using SHA-1, SHA-256, SHA-384, SHA-512 with a secret key

How to Use HMAC Generator

1. Enter the message you want to sign and your secret key in the input fields
2. Select the hash algorithm (SHA-1, SHA-256, SHA-384, or SHA-512) and your key format (Text, Hex, or Base64)
3. Click Generate HMAC to compute the signature — use the copy button to save the result, or paste an expected value to verify

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