gnutls_x509_privkey_get_key_id(3)

API function

Section 3 gnutls-doc bookworm source

Description

gnutls_x509_privkey_get_key_id

NAME

gnutls_x509_privkey_get_key_id - API function

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

a key

unsigned int flags

should be one of the flags from gnutls_keyid_flags_t

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 that 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 (0) is returned, otherwise a negative error value.

REPORTING BUGS

Report bugs to <bugs@gnutls.org>.
Home page: https://www.gnutls.org

COPYRIGHT

Copyright © 2001- 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.