gnutls_x509_crt_get_fingerprint(3) API function


#include <gnutls/x509.h>

int gnutls_x509_crt_get_fingerprint(gnutls_x509_crt_t cert, gnutls_digest_algorithm_t algo, void * buf, size_t * buf_size);


gnutls_x509_crt_t cert
should contain a gnutls_x509_crt_t type
gnutls_digest_algorithm_t algo
is a digest algorithm
void * buf
a pointer to a structure to hold the fingerprint (may be null)
size_t * buf_size
initially holds the size of buf


This function will calculate and copy the certificate's fingerprint in the provided buffer. The fingerprint is a hash of the DER-encoded data of the certificate.

If the buffer is null then only the size will be filled.


GNUTLS_E_SHORT_MEMORY_BUFFER if the provided buffer is not long enough, and in that case the *buf_size will be updated with the required size. On success 0 is returned.


Report bugs to <[email protected]>.
Home page:


Copyright © 2001-2016 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.