gnutls_hmac_init(3) gnutls gnutls_hmac_init(3)
NAME
gnutls_hmac_init - API function
SYNOPSIS
#include <gnutls/crypto.h>
int gnutls_hmac_init(gnutls_hmac_hd_t * dig, gnutls_mac_algorithm_t al-
gorithm, const void * key, size_t keylen);
ARGUMENTS
gnutls_hmac_hd_t * dig
is a gnutls_hmac_hd_t type
gnutls_mac_algorithm_t algorithm
the HMAC algorithm to use
const void * key
the key to be used for encryption
size_t keylen
the length of the key
DESCRIPTION
This function will initialize an context that can be used to produce a
Message Authentication Code (MAC) of data. This will effectively use
the current crypto backend in use by gnutls or the cryptographic accel-
erator in use.
Note that despite the name of this function, it can be used for other
MAC algorithms than HMAC.
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- 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 no-
tice 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/
gnutls 3.7.3 gnutls_hmac_init(3)
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