NAME
gnutls_x509_crt_get_key_id - Return unique ID of public key’s parameters
SYNOPSIS
#include <gnutls/x509.h>
int gnutls_x509_crt_get_key_id(gnutls_x509_crt_t crt, unsigned int flags, unsigned char * output_data, size_t * output_data_size);
ARGUMENTS
| gnutls_x509_crt_t crt | Holds the certificate |
| 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 private 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.
RETURN VALUE
In case of failure a negative value will be returned, and 0 on success.
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 | |
