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gnutls_x509_privkey_sign_data(3)     gnutls	gnutls_x509_privkey_sign_data(3)

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_di-
     gest_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 a digest algorithm

     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  sup-
     ported  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 * signa-
     ture_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: https://www.gnutls.org

COPYRIGHT
     Copyright (C) 2001-2023 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				     3.8.13	gnutls_x509_privkey_sign_data(3)

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