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gnutls_hmac_copy(3)                 gnutls                 gnutls_hmac_copy(3)


NAME

       gnutls_hmac_copy - API function


SYNOPSIS

       #include <gnutls/crypto.h>

       gnutls_hmac_hd_t gnutls_hmac_copy(gnutls_hmac_hd_t handle);


ARGUMENTS

       gnutls_hmac_hd_t handle
                   is a gnutls_hmac_hd_t type


DESCRIPTION

       This function will create a copy of MAC context, containing all its
       current state. Copying contexts for MACs registered using
       gnutls_crypto_register_mac() 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.


RETURNS

       new MAC context or NULL in case of an error.


SINCE

       3.6.9


REPORTING BUGS

       Report bugs to <bugs@gnutls.org>.
       Home page: https://www.gnutls.org


COPYRIGHT

       Copyright (C) 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
       notice and this notice are preserved.


SEE ALSO

       The full documentation for gnutls is maintained as a Texinfo manual.
       If the /usr/local/share/doc/gnutls/ directory does not contain the HTML
       form visit

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

gnutls                               3.7.9                 gnutls_hmac_copy(3)

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