Provided by: libkcapi-dev_1.1.3-1_amd64
kcapi_aead_getdata_input - get the pointers into input buffer
void kcapi_aead_getdata_input(struct kcapi_handle * handle, uint8_t * encdata, uint32_t encdatalen, int enc, uint8_t ** aad, uint32_t * aadlen, uint8_t ** data, uint32_t * datalen, uint8_t ** tag, uint32_t * taglen);
handle [in] cipher handle encdata [in] data buffer returned by the encryption operation encdatalen [in] size of the encryption data buffer enc [in] does output buffer hold encryption or decryption result? aad [out] AD buffer pointer; when set to NULL, no data pointer is returned aadlen [out] length of AD; when aad was set to NULL, no information is returned data [out] pointer to output buffer from AEAD encryption operation when set to NULL, no data pointer is returned datalen [out] length of data buffer; when data was set to NULL, no information is returned tag [out] tag buffer pointer; when set to NULL, no data pointer is returned taglen [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> Author.