gnutls_x509_privkey_get_key_id(3)

NAME
gnutls_x509_privkey_get_key_id - Return unique ID of the key's parameters

SYNOPSIS
#include <gnutls/x509.h>

int gnutls_x509_privkey_get_key_id(gnutls_x509_privkey_t key, unsigned int flags, unsigned char * output_data, size_t * output_data_size);

ARGUMENTS

gnutls_x509_privkey_t key
    Holds the key

unsigned int flags
    should be 0 for now

unsigned char * output_data
    will contain the key ID

size_t * output_data_size
    holds the size of output_data (and will be replaced by the actual size of parameters)

DESCRIPTION
This function will return a unique ID the depends on the public key parameters. This ID can be used in checking whether a certificate corresponds to the given key. If the buffer provided is not long enough to hold the output, then *output_data_size is updated and GNUTLS_E_SHORT_MEMORY_BUFFER will be returned. The output will normally be a SHA-1 hash output, which is 20 bytes.

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

REPORTING BUGS
Report bugs to <bug-gnutls@gnu.org>.

COPYRIGHT
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.

SEE ALSO
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.