gnutls_x509_crt_get_key_id3
Api function
Usage
#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 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)
Overview
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 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.
Returns
In case of failure a negative error code will be returned, and 0 on success.
Releases
10 releases since Debian 4.0 (Etch); the text changed 9 times.