HMAC Generator
Generate HMAC signatures with SHA-256, SHA-384, and SHA-512
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How to Use HMAC Generator
- Enter your message or data to sign
- Enter the secret key
- Choose the hash algorithm and copy the HMAC signature
Frequently Asked Questions
What is HMAC?
HMAC (Hash-based Message Authentication Code) combines a secret key with a message to produce a signature that verifies both data integrity and authenticity.
When do I need HMAC?
For verifying webhook payloads (Stripe, GitHub), API request signing (AWS), token generation, and any scenario requiring message authentication.
Which algorithm should I use?
SHA-256 is the most common and recommended. SHA-512 offers extra security for sensitive applications.