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@deftypefun {int} {gnutls_hmac_fast} (gnutls_mac_algorithm_t @var{algorithm}, const void * @var{key}, size_t @var{keylen}, const void * @var{ptext}, size_t @var{ptext_len}, void * @var{digest})
@var{algorithm}: the hash algorithm to use
@var{key}: the key to use
@var{keylen}: the length of the key
@var{ptext}: the data to hash
@var{ptext_len}: the length of data to hash
@var{digest}: is the output value of the hash
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).
@strong{Returns:} Zero or a negative error code on error.
@strong{Since:} 2.10.0
@end deftypefun
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