HMAC Generator
Generate HMAC (Hash-based Message Authentication Code) signatures using SHA-256, SHA-512, and other algorithms.
HMAC (Hash-based Message Authentication Code) is used to verify both data integrity and authenticity.
Common uses: API authentication, webhook signatures, JWT signing, secure cookies.
HMAC Authentication - Technical Details
HMAC combines a cryptographic hash function with a secret key to verify message integrity and authenticity. It's commonly used in API authentication, webhooks, and secure communications.
Command-line Alternative
// HMAC-SHA256 example\nHMAC(key, message) = hash(key XOR opad || hash(key XOR ipad || message))\n\n// Used in: AWS Signature, GitHub webhooks, Stripe