gnutls_cipher_decrypt2 — API function


#include <gnutls/crypto.h>

int gnutls_cipher_decrypt2(gnutls_cipher_hd_t handle, const void * ctext, size_t ctext_len, void * ptext, size_t ptext_len);


gnutls_cipher_hd_t handle

is a gnutls_cipher_hd_t type

const void * ctext

the data to decrypt

size_t ctext_len

the length of data to decrypt

void * ptext

the decrypted data

size_t ptext_len

the available length for decrypted data


This function will decrypt the given data using the algorithm specified by the context. For block ciphers the  ctext_len must be a multiple of the block size. For the supported ciphers the plaintext data length will equal the ciphertext size.

Note that in AEAD ciphers, this will not check the tag. You will need to compare the tag sent with the value returned from gnutls_cipher_tag().


Zero or a negative error code on error.



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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


3.6.9 gnutls