void kcapi_aead_getdata_input(struct kcapi_handle * handle, uint8_t * encdata, size_t encdatalen, int enc, uint8_t ** aad, size_t * aadlen, uint8_t ** data, size_t * datalen, uint8_t ** tag, size_t * taglen);
[in] cipher handle
[in] data buffer returned by the encryption operation
[in] size of the encryption data buffer
[in] does output buffer hold encryption or decryption result?
[out] AD buffer pointer; when set to NULL, no data pointer is returned
[out] length of AD; when aad was set to NULL, no information is returned
[out] pointer to output buffer from AEAD encryption operation when set to NULL, no data pointer is returned
[out] length of data buffer; when data was set to NULL, no information is returned
[out] tag buffer pointer; when set to NULL, no data pointer is returned
[out] length of tag; when tag was set to NULL, no information is returned
This function is a service function to the consumer to locate the right ciphertext buffer offset holding the authentication tag. In addition, it provides the consumer with the length of the tag and the length of the ciphertext.
Stephan Mueller <firstname.lastname@example.org>