---
name: "gnutls_pubkey_encrypt_data"
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_pubkey_encrypt_data"
---

# gnutls\_pubkey\_encrypt\_data(3)

API function

## NAME

gnutls\_pubkey\_encrypt\_data - API function

## SYNOPSIS

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

**int gnutls\_pubkey\_encrypt\_data(gnutls\_pubkey\_t** *key***, unsigned int** *flags***, const gnutls\_datum\_t \*** *plaintext***, gnutls\_datum\_t \*** *ciphertext***);**

## ARGUMENTS

- gnutls\_pubkey\_t key

  Holds the public key

- unsigned int flags

  should be 0 for now

- const gnutls\_datum\_t \* plaintext

  The data to be encrypted

- gnutls\_datum\_t \* ciphertext

  contains the encrypted data

## DESCRIPTION

This function will encrypt the given data, using the public key. On success the  *ciphertext* will be allocated using **gnutls\_malloc()**.

## RETURNS

On success, **GNUTLS\_E\_SUCCESS** (0) is returned, otherwise a negative error value.

## SINCE

3\.0

## 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/