HMAC Generator

Verify data integrity and authenticity with HMAC.

HMAC Generator

Compute HMAC-SHA256 or HMAC-SHA512 from a message and a secret key, fully in-browser.

Message

Secret key

What is HMAC Generator?

HMAC (Hash-based Message Authentication Code) uses a cryptographic hash function in combination with a secret key. It is used to simultaneously verify both the data integrity and the authenticity of a message. It is a standard for securing webhooks, API requests, and financial transactions.

When to use HMAC Generator?

Signing API requests for secure communication

Verifying webhooks from services like GitHub or Stripe

Authenticating messages in distributed systems

Testing cryptographic implementations of HMAC

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