.\" DO NOT MODIFY THIS FILE!  It was generated by gdoc.

.TH "gnutls_hmac_init" 3 "3.6.14" "gnutls" "gnutls"

.SH NAME

gnutls_hmac_init \- API function

.SH SYNOPSIS

.B #include <gnutls/crypto.h>

.sp

.BI "int gnutls_hmac_init(gnutls_hmac_hd_t * " dig ", gnutls_mac_algorithm_t " algorithm ", const void * " key ", size_t " keylen ");"

.SH ARGUMENTS

.IP "gnutls_hmac_hd_t * dig" 12

is a \fBgnutls_hmac_hd_t\fP type

.IP "gnutls_mac_algorithm_t algorithm" 12

the HMAC algorithm to use

.IP "const void * key" 12

the key to be used for encryption

.IP "size_t keylen" 12

the length of the key

.SH "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 accelerator in use.

Note that despite the name of this function, it can be used

for other MAC algorithms than HMAC.

.SH "RETURNS"

Zero or a negative error code on error.

.SH "SINCE"

2.10.0

.SH "REPORTING BUGS"

Report bugs to <bugs@gnutls.org>.

.br

Home page: https://www.gnutls.org

.SH COPYRIGHT

Copyright \(co 2001- Free Software Foundation, Inc., and others.

.br

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.

.SH "SEE ALSO"

The full documentation for

.B gnutls

is maintained as a Texinfo manual.

If the /usr/share/doc/gnutls/

directory does not contain the HTML form visit

.B

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

.PP