gnutls_aead_cipher_decrypt − API function


, const void * int
gnutls_aead_cipher_decrypt(gnutls_aead_cipher_hd_t handle

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

const void * ctext
            the data to decrypt

size_t ctext_len
            the length of data to decrypt (includes tag

void * ptext
            the decrypted data

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

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.

Zero or a negative error code on error.



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