dane\_verify\_session\_crt(3) gnutls dane\_verify\_session\_crt(3)

# [NAME](#NAME)

dane\_verify\_session\_crt - API function

# [SYNOPSIS](#SYNOPSIS)

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

**int dane\_verify\_session\_crt(dane\_state\_t s, gnutls\_session\_t session, const char * hostname, const char * proto, unsigned int port, unsigned int sflags, unsigned int vflags, unsigned int * verify);**

# [ARGUMENTS](#ARGUMENTS)

[dane\_state\_t s](#dane_state_t)

A DANE state structure (may be NULL)

[gnutls\_session\_t session](#gnutls_session_t)

A gnutls session

[const char * hostname](#const)

The hostname associated with the chain

[const char * proto](#const~2)

The protocol of the service connecting (e.g. tcp)

[unsigned int port](#unsigned)

The port of the service connecting (e.g. 443)

[unsigned int sflags](#unsigned~2)

Flags for the initialization of *s* (if NULL)

[unsigned int vflags](#unsigned~3)

Verification flags; an OR'ed list of **dane\_verify\_flags\_t**.

[unsigned int * verify](#unsigned~4)

An OR'ed list of **dane\_verify\_status\_t**.

# [DESCRIPTION](#DESCRIPTION)

This function will verify session's certificate chain against the CA constrains and/or the certificate available via DANE. See **dane\_verify\_crt()** for more information.

This will not verify the chain for validity; unless the DANE verification is restricted to end certificates, this must be be performed separately using **gnutls\_certificate\_verify\_peers3()**.

# [RETURNS](#RETURNS)

a negative error code on error and **DANE\_E\_SUCCESS** (0) when the DANE entries were successfully parsed, irrespective of whether they were verified (see *verify* for that information). If no usable entries were encountered **DANE\_E\_REQUESTED\_DATA\_NOT\_AVAILABLE** will be returned.

# [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: dane_verify_session_crt(3) from gnutls 3.8.13-r3 (Chainguard OS)
Source: https://gitlab.com/gnutls/gnutls