gnutls\_tdb\_set\_verify\_func(3) gnutls gnutls\_tdb\_set\_verify\_func(3)

# [NAME](#NAME)

gnutls\_tdb\_set\_verify\_func - API function

# [SYNOPSIS](#SYNOPSIS)

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

**void gnutls\_tdb\_set\_verify\_func(gnutls\_tdb\_t tdb, gnutls\_tdb\_verify\_func verify);**

# [ARGUMENTS](#ARGUMENTS)

[gnutls\_tdb\_t tdb](#gnutls_tdb_t)

The trust storage

[gnutls\_tdb\_verify\_func verify](#gnutls_tdb_verify_func)

The verification function

# [DESCRIPTION](#DESCRIPTION)

This function will associate a retrieval function with the trust storage structure. The function is of the following form.

int gnutls\_tdb\_verify\_func(const char* db\_name, const char* host, const char* service, const gnutls\_datum\_t* pubkey);

The verify function should return zero on a match, **GNUTLS\_E\_CERTIFICATE\_KEY\_MISMATCH** if there is a mismatch and any other negative error code otherwise.

The *db\_name* should be used to pass any private data to this function.

# [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_tdb_set_verify_func(3) from gnutls 3.8.13-r1 (Chainguard OS)
Source: https://gitlab.com/gnutls/gnutls