---
name: "gnutls_openpgp_crt_check_hostname2"
section: "3"
platform: "linux"
package: "gnutls-doc"
version: "3.5.8-5+deb9u5"
release: "Debian 9 (Stretch)"
platforms: ["linux"]
url: "https://new.carta.tech/gnutls_openpgp_crt_check_hostname2"
---

# gnutls\_openpgp\_crt\_check\_hostname2(3)

API function

## NAME

gnutls\_openpgp\_crt\_check\_hostname2 - API function

## SYNOPSIS

**#include \<gnutls/openpgp.h\>**

**int gnutls\_openpgp\_crt\_check\_hostname2(gnutls\_openpgp\_crt\_t** *key***, const char \*** *hostname***, unsigned** *flags***);**

## ARGUMENTS

- gnutls\_openpgp\_crt\_t key

  should contain a **gnutls\_openpgp\_crt\_t** type

- const char \* hostname

  A null terminated string that contains a DNS name

- unsigned flags

  gnutls\_certificate\_verify\_flags

## DESCRIPTION

This function will check if the given key's owner matches the given hostname.

Unless, the flag **GNUTLS\_VERIFY\_DO\_NOT\_ALLOW\_WILDCARDS** is specified, wildcards are only considered if the domain name consists of three components or more, and the wildcard starts at the leftmost position.

## RETURNS

non-zero for a successful match, and zero on failure.

## REPORTING BUGS

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

## COPYRIGHT

Copyright © 2001-2020 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

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

- http://www.gnutls.org/manual/