Scroll to navigation

gnutls_ocsp_resp_verify_direct(3) gnutls gnutls_ocsp_resp_verify_direct(3)


gnutls_ocsp_resp_verify_direct - API function


#include <gnutls/ocsp.h>

int gnutls_ocsp_resp_verify_direct(gnutls_ocsp_resp_t resp, gnutls_x509_crt_t issuer, unsigned int * verify, unsigned int flags);


gnutls_ocsp_resp_t resp
should contain a gnutls_ocsp_resp_t type
gnutls_x509_crt_t issuer
certificate believed to have signed the response
unsigned int * verify
output variable with verification status, an gnutls_ocsp_verify_reason_t
unsigned int flags
verification flags from gnutls_certificate_verify_flags


Verify signature of the Basic OCSP Response against the public key in the issuer certificate.

The output verify variable will hold verification status codes (e.g., GNUTLS_OCSP_VERIFY_SIGNER_NOT_FOUND, GNUTLS_OCSP_VERIFY_INSECURE_ALGORITHM) which are only valid if the function returned GNUTLS_E_SUCCESS.

Note that the function returns GNUTLS_E_SUCCESS even when verification failed. The caller must always inspect the verify variable to find out the verification status.

The flags variable should be 0 for now.


On success, GNUTLS_E_SUCCESS (0) is returned, otherwise a negative error value.


Report bugs to <>.
Home page:


Copyright © 2001-2021 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.


The full documentation for gnutls is maintained as a Texinfo manual. If the /usr/share/doc/gnutls/ directory does not contain the HTML form visit
3.6.7 gnutls