HMAC (Hash-based Message Authentication Code) is a mechanism for message authentication using cryptographic hash functions. It verifies both data integrity and authenticity of a message.

What algorithms are supported?

This tool supports HMAC generation with SHA-1, SHA-256, SHA-384, and SHA-512 algorithms. SHA-256 is recommended for most use cases.

HMAC is considered secure when used with a strong hash function (SHA-256 or above) and a sufficiently long secret key. SHA-1 is deprecated for security-critical applications.

What is HMAC used for?

HMAC is commonly used for API authentication, verifying message integrity, digital signatures, and secure communication protocols like TLS and SSH.

HMAC Generator

Generate HMAC hash signatures using SHA-1, SHA-256, SHA-384, or SHA-512 algorithms. Secure message authentication.

