SUMMARY

emacs-hmac implements a Hash-Based Message Authentication Code around Emacs's built-in secure-hash function.

API

(hmac ALGORITHM KEY MESSAGE &optional BINARY)

ALGORITHM is the hash algorithm to use; it must be one of the symbols supported by secure-hash, that is: md5, sha1, sha224, sha256, sha384, or sha512. KEY is the private key to sign with, and MESSAGE is the message to sign. BINARY is a flag which indicates whether to return a binary or hexadecimal string.

Note that while secure-hash supports passing a buffer object as its MESSAGE argument, hmac does not.