gnutls_x509_crt_verify_data2(3)    gnutls    gnutls_x509_crt_verify_data2(3)

NAME         top

       gnutls_x509_crt_verify_data2 - API function

SYNOPSIS         top

       #include <gnutls/x509.h>

       int gnutls_x509_crt_verify_data2(gnutls_x509_crt_t crt,
       gnutls_sign_algorithm_t algo, unsigned int flags, const
       gnutls_datum_t * data, const gnutls_datum_t * signature);

ARGUMENTS         top

       gnutls_x509_crt_t crt
                   Holds the certificate to verify with

       gnutls_sign_algorithm_t algo
                   The signature algorithm used

       unsigned int flags
                   Zero or an OR list of gnutls_certificate_verify_flags

       const gnutls_datum_t * data
                   holds the signed data

       const gnutls_datum_t * signature
                   contains the signature

DESCRIPTION         top

       This function will verify the given signed data, using the parameters
       from the certificate.

RETURNS         top

       In case of a verification failure GNUTLS_E_PK_SIG_VERIFY_FAILED is
       returned, GNUTLS_E_EXPIRED or GNUTLS_E_NOT_YET_ACTIVATED on expired
       or not yet activated certificate and zero or positive code on

       Note that since GnuTLS 3.5.6 this function introduces checks in the
       end certificate ( crt ), including time checks and key usage checks.

SINCE         top


REPORTING BUGS         top

       Report bugs to <>.
       Home page:

COPYRIGHT         top

       Copyright © 2001-2018 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.

SEE ALSO         top

       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 

COLOPHON         top

       This page is part of the GnuTLS (GnuTLS Transport Layer Security
       Library) project.  Information about the project can be found at 
       ⟨⟩.  If you have a bug report for this manual
       page, send it to  This page was obtained from the
       tarball gnutls-3.6.2.tar.xz fetched from
       ⟨⟩ on 2018-04-30.  If you discover
       any rendering problems in this HTML version of the page, or you
       believe there is a better or more up-to-date source for the page, or
       you have corrections or improvements to the information in this
       COLOPHON (which is not part of the original manual page), send a mail

gnutls                              3.6.2    gnutls_x509_crt_verify_data2(3)