gnutls_x509_crt_get_key_id (3) Linux Manual Page
gnutls_x509_crt_get_key_id – API function
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 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.Reporting Bugs
Report bugs to <bugs [at] gnutls.org>.Home page: http://www.gnutls.org
Copyright
Copyright © 2001-2014 Free Software Foundation, Inc..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.