.\" DO NOT MODIFY THIS FILE!  It was generated by gdoc.
.TH "gnutls_hmac_copy" 3 "3.8.8" "gnutls" "gnutls"
.SH NAME
gnutls_hmac_copy \- API function
.SH SYNOPSIS
.B #include <gnutls/crypto.h>
.sp
.BI "gnutls_hmac_hd_t gnutls_hmac_copy(gnutls_hmac_hd_t " handle ");"
.SH ARGUMENTS
.IP "gnutls_hmac_hd_t handle" 12
is a \fBgnutls_hmac_hd_t\fP type
.SH "DESCRIPTION"
This function will create a copy of MAC context, containing all its current
state. Copying contexts for MACs registered using
\fBgnutls_crypto_register_mac()\fP is not supported and will always result in an
error. In addition to that, some of the MAC implementations do not support
this operation. Applications should check the return value and provide a
proper fallback.
.SH "RETURNS"
new MAC context or NULL in case of an error.
.SH "SINCE"
3.6.9
.SH "REPORTING BUGS"
Report bugs to <bugs@gnutls.org>.
.br
Home page: https://www.gnutls.org

.SH COPYRIGHT
Copyright \(co 2001-2023 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