NAME

       gnutls_hmac_fast - API function

SYNOPSIS

       #include <gnutls/crypto.h>

       int  gnutls_hmac_fast(gnutls_mac_algorithm_t  algorithm,  const void * key, size_t keylen,
       const void * ptext, size_t ptext_len, void * digest);

ARGUMENTS

       gnutls_mac_algorithm_t algorithm
                   the hash algorithm to use

       const void * key
                   the key to use

       size_t keylen
                   the length of the key

       const void * ptext
                   the data to hash

       size_t ptext_len
                   the length of data to hash

       void * digest
                   is the output value of the hash

DESCRIPTION

       This convenience function will hash the given data and return output  on  a  single  call.
       Note, this call will not work for MAC algorithms that require nonce (like UMAC or GMAC).

RETURNS

       Zero or a negative error code on error.

SINCE

       2.10.0

REPORTING BUGS

       Report bugs to <bugs@gnutls.org>.
       Home page: https://www.gnutls.org

COPYRIGHT

       Copyright © 2001-2023 Free Software Foundation, Inc., and others.
       Copying  and distribution of this file, with or without modification, are permitted in any
       medium without royalty provided the copyright notice and this notice are preserved.

SEE ALSO

       The  full  documentation  for  gnutls  is  maintained  as  a  Texinfo  manual.    If   the
       /usr/share/doc/gnutls/ directory does not contain the HTML form visit

       https://www.gnutls.org/manual/