---
name: "gnutls_rsa_params_export_pkcs1"
section: "3"
platform: "linux"
package: "gnutls-doc"
version: "3.3.8-6+deb8u7"
release: "Debian 8 (Jessie)"
platforms: ["linux"]
url: "https://new.carta.tech/gnutls_rsa_params_export_pkcs1"
---

# gnutls\_rsa\_params\_export\_pkcs1(3)

API function

## NAME

gnutls\_rsa\_params\_export\_pkcs1 - API function

## SYNOPSIS

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

**int gnutls\_rsa\_params\_export\_pkcs1(gnutls\_rsa\_params\_t** *params***, gnutls\_x509\_crt\_fmt\_t** *format***, unsigned char \*** *params\_data***, size\_t \*** *params\_data\_size***);**

## ARGUMENTS

- gnutls\_rsa\_params\_t params

  Holds the RSA parameters

- gnutls\_x509\_crt\_fmt\_t format

  the format of output params. One of PEM or DER.

- unsigned char \* params\_data

  will contain a PKCS1 RSAPrivateKey structure PEM or DER encoded

- size\_t \* params\_data\_size

  holds the size of params\_data (and will be replaced by the actual size of parameters)

## DESCRIPTION

This function will export the given RSA parameters to a PKCS1 RSAPrivateKey structure. If the buffer provided is not long enough to hold the output, then GNUTLS\_E\_SHORT\_MEMORY\_BUFFER will be returned.

If the structure is PEM encoded, it will have a header of "BEGIN RSA PRIVATE KEY".

## RETURNS

**GNUTLS\_E\_SUCCESS** on success, or an negative error code.

## REPORTING BUGS

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

## COPYRIGHT

Copyright © 2001-2014 Free Software Foundation, Inc..\
 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/