1gnutls_hmac_copy(3)                 gnutls                 gnutls_hmac_copy(3)
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NAME

6       gnutls_hmac_copy - API function
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SYNOPSIS

9       #include <gnutls/crypto.h>
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11       gnutls_hmac_hd_t gnutls_hmac_copy(gnutls_hmac_hd_t handle);
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ARGUMENTS

14       gnutls_hmac_hd_t handle
15                   is a gnutls_hmac_hd_t type
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DESCRIPTION

18       This  function  will  create  a copy of MAC context, containing all its
19       current   state.   Copying   contexts   for   MACs   registered   using
20       gnutls_crypto_register_mac() is not supported and will always result in
21       an error. In addition to that, some of the MAC implementations  do  not
22       support  this operation. Applications should check the return value and
23       provide a proper fallback.
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RETURNS

26       new MAC context or NULL in case of an error.
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SINCE

29       3.6.9
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REPORTING BUGS

32       Report bugs to <bugs@gnutls.org>.
33       Home page: https://www.gnutls.org
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37       Copyright © 2001-2023 Free Software Foundation, Inc., and others.
38       Copying and distribution of this file, with  or  without  modification,
39       are  permitted in any medium without royalty provided the copyright no‐
40       tice and this notice are preserved.
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SEE ALSO

43       The full documentation for gnutls is maintained as  a  Texinfo  manual.
44       If  the /usr/share/doc/gnutls/ directory does not contain the HTML form
45       visit
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47       https://www.gnutls.org/manual/
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49gnutls                               3.8.2                 gnutls_hmac_copy(3)
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