Provided by: gnutls-doc_3.4.10-4ubuntu1.9_all bug

NAME
       gnutls_x509_privkey_sign_data - API function


SYNOPSIS
       #include <gnutls/x509.h>

       int   gnutls_x509_privkey_sign_data(gnutls_x509_privkey_t  key,  gnutls_digest_algorithm_t
       digest, unsigned int flags, const gnutls_datum_t  *  data,  void  *  signature,  size_t  *
       signature_size);


ARGUMENTS
       gnutls_x509_privkey_t key
                   a key

       gnutls_digest_algorithm_t digest
                   should be MD5 or SHA1

       unsigned int flags
                   should be 0 for now

       const gnutls_datum_t * data
                   holds the data to be signed

       void * signature
                   will contain the signature

       size_t * signature_size
                   holds the size of signature (and will be replaced by the new size)


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 SHA-1 for the DSA
       keys.

       If the buffer provided is not long enough to hold the output,  then  *  signature_size  is
       updated and GNUTLS_E_SHORT_MEMORY_BUFFER will be returned.

       Use gnutls_x509_crt_get_preferred_hash_algorithm() to determine the hash algorithm.


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


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/