---
name: "gnutls_pem_base64_decode"
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_pem_base64_decode"
---

# gnutls\_pem\_base64\_decode(3)

API function

## NAME

gnutls\_pem\_base64\_decode - API function

## SYNOPSIS

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

**int gnutls\_pem\_base64\_decode(const char \*** *header***, const gnutls\_datum\_t \*** *b64\_data***, unsigned char \*** *result***, size\_t \*** *result\_size***);**

## ARGUMENTS

- const char \* header

  A null terminated string with the PEM header (eg. CERTIFICATE)

- const gnutls\_datum\_t \* b64\_data

  contain the encoded data

- unsigned char \* result

  the place where decoded data will be copied

- size\_t \* result\_size

  holds the size of the result

## DESCRIPTION

This function will decode the given encoded data.  If the header given is non **NULL** this function will search for "-----BEGIN header" and decode only this part.  Otherwise it will decode the first PEM packet found.

## RETURNS

On success **GNUTLS\_E\_SUCCESS** (0) is returned, **GNUTLS\_E\_SHORT\_MEMORY\_BUFFER** is returned if the buffer given is not long enough, or 0 on success.

## 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/