gnutls_x509_privkey_sign_data - sign data using the private key


#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);


gnutls_x509_privkey_t key Holds the 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)


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.


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


Report bugs to <>.


Copyright © 2008 Free Software Foundation. Permission is granted to make and distribute verbatim copies of this manual provided the copyright notice and this permission notice are preserved on all copies.


The full documentation for gnutls is maintained as a Texinfo manual. If the info and gnutls programs are properly installed at your site, the command
info gnutls
should give you access to the complete manual.

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