gnutls\_x509\_crt\_verify(3) gnutls gnutls\_x509\_crt\_verify(3)

# [NAME](#NAME)

gnutls\_x509\_crt\_verify - API function

# [SYNOPSIS](#SYNOPSIS)

**#include <gnutls/x509.h>**

**int gnutls\_x509\_crt\_verify(gnutls\_x509\_crt\_t cert, const gnutls\_x509\_crt\_t * CA\_list, unsigned CA\_list\_length, unsigned int flags, unsigned int * verify);**

# [ARGUMENTS](#ARGUMENTS)

[gnutls\_x509\_crt\_t cert](#gnutls_x509_crt_t)

is the certificate to be verified

[const gnutls\_x509\_crt\_t * CA\_list](#const)

is one certificate that is considered to be trusted one

[unsigned CA\_list\_length](#unsigned)

holds the number of CA certificate in CA\_list

[unsigned int flags](#unsigned~2)

Flags that may be used to change the verification algorithm. Use OR of the gnutls\_certificate\_verify\_flags enumerations.

[unsigned int * verify](#unsigned~3)

will hold the certificate verification output.

# [DESCRIPTION](#DESCRIPTION)

This function will try to verify the given certificate and return its status. Note that a verification error does not imply a negative return status. In that case the *verify* status is set.

The details of the verification are the same as in **gnutls\_x509\_trust\_list\_verify\_crt2()**.

# [RETURNS](#RETURNS)

On success, **GNUTLS\_E\_SUCCESS** (0) is returned, otherwise a negative error value.

# [REPORTING BUGS](#REPORTING_BUGS)

Report bugs to <bugs@gnutls.org>.  
Home page: https://www.gnutls.org

# [COPYRIGHT](#COPYRIGHT)

Copyright © 2001-2023 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](#SEE_ALSO)

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

[https://www.gnutls.org/manual/](https://www.gnutls.org/manual/)

3.8.13 gnutls

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Document: gnutls_x509_crt_verify(3) from gnutls 3.8.13-r1 (Chainguard OS)
Source: https://gitlab.com/gnutls/gnutls