gnutls_cipher_decrypt2 − API function


, const void * int gnutls_cipher_decrypt2(gnutls_cipher_hd_t

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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