---
name: "gnutls_x509_crt_check_email"
section: "3"
platform: "linux"
package: "gnutls"
version: "3.8.13-3"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/gnutls_x509_crt_check_email"
---

# gnutls\_x509\_crt\_check\_email(3)

API function

## NAME

gnutls\_x509\_crt\_check\_email - API function

## SYNOPSIS

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

**unsigned gnutls\_x509\_crt\_check\_email(gnutls\_x509\_crt\_t** *cert***, const char \*** *email***, unsigned int** *flags***);**

## ARGUMENTS

- gnutls\_x509\_crt\_t cert

  should contain an gnutls\_x509\_crt\_t type

- const char \* email

  A null terminated string that contains an email address (RFC822)

- unsigned int flags

  should be zero

## DESCRIPTION

This function will check if the given certificate's subject matches the given email address.

## RETURNS

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

## REPORTING BUGS

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

## 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

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/