gnutls_aead_cipher_decrypt man page

gnutls_aead_cipher_decrypt — API function

Synopsis

#include <gnutls/crypto.h>

int gnutls_aead_cipher_decrypt(gnutls_aead_cipher_hd_t handle, const void * nonce, size_t nonce_len, const void * auth, size_t auth_len, size_t tag_size, const void * ctext, size_t ctext_len, void * ptext, size_t * ptext_len);

Arguments

gnutls_aead_cipher_hd_t handle

is a gnutls_aead_cipher_hd_t type.

const void * nonce

the nonce to set

size_t nonce_len

The length of the nonce

const void * auth

the data to be authenticated

size_t auth_len

The length of the data

size_t tag_size

The size of the tag to use (use zero for the default)

const void * ctext

the data to decrypt

size_t ctext_len

the length of data to decrypt (includes tag size)

void * ptext

the decrypted data

size_t * ptext_len

the length of decrypted data (initially must hold the maximum available size)

Description

This function will decrypt the given data using the algorithm specified by the context. This function must be provided the whole data to be decrypted, including the tag, and will fail if the tag verification fails.

Returns

Zero or a negative error code on error.

Since

3.4.0

Reporting Bugs

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

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/

Info

3.5.10 gnutls