NAME

       gnutls_privkey_sign_data - API function

SYNOPSIS

       #include <gnutls/abstract.h>

       int   gnutls_privkey_sign_data(gnutls_privkey_t  signer,  gnutls_digest_algorithm_t  hash,
       unsigned int flags, const gnutls_datum_t * data, gnutls_datum_t * signature);

ARGUMENTS

       gnutls_privkey_t signer
                   Holds the key

       gnutls_digest_algorithm_t hash
                   should be a digest algorithm

       unsigned int flags
                   Zero or one of gnutls_privkey_flags_t

       const gnutls_datum_t * data
                   holds the data to be signed

       gnutls_datum_t * signature
                   will contain the signature allocated with gnutls_malloc()

DESCRIPTION

       This function will sign the given data  using  a  signature  algorithm  supported  by  the
       private  key.  Signature  algorithms  are  always  used  together  with  a hash functions.
       Different hash functions may be used for the RSA algorithm, but only the  SHA  family  for
       the DSA keys.

       You may use gnutls_pubkey_get_preferred_hash_algorithm() to determine the hash algorithm.

RETURNS

       On success, GNUTLS_E_SUCCESS (0) is returned, otherwise a negative error value.

SINCE

       2.12.0

REPORTING BUGS

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

COPYRIGHT

       Copyright © 2001-2021 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/share/doc/gnutls/ directory does not contain the HTML form visit

       http://www.gnutls.org/manual/