gnutls\_privkey\_decrypt\_data2(3) gnutls gnutls\_privkey\_decrypt\_data2(3)

# [NAME](#NAME)

gnutls\_privkey\_decrypt\_data2 - API function

# [SYNOPSIS](#SYNOPSIS)

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

**int gnutls\_privkey\_decrypt\_data2(gnutls\_privkey\_t key, unsigned int flags, const gnutls\_datum\_t * ciphertext, unsigned char * plaintext, size\_t plaintext\_size);**

# [ARGUMENTS](#ARGUMENTS)

[gnutls\_privkey\_t key](#gnutls_privkey_t)

Holds the key

[unsigned int flags](#unsigned)

zero for now

[const gnutls\_datum\_t * ciphertext](#const)

holds the data to be decrypted

[unsigned char * plaintext](#unsigned~2)

a preallocated buffer that will be filled with the plaintext

[size\_t plaintext\_size](#size_t)

in/out size of the plaintext

# [DESCRIPTION](#DESCRIPTION)

This function will decrypt the given data using the algorithm supported by the private key. Unlike with **gnutls\_privkey\_decrypt\_data()** this function operates in constant time and constant memory access.

# [RETURNS](#RETURNS)

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

# [SINCE](#SINCE)

3.6.5

# [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_privkey_decrypt_data2(3) from gnutls 3.8.13-r3 (Chainguard OS)
Source: https://gitlab.com/gnutls/gnutls