#include "xf_security/ofb.hpp"
static void aes128OfbEncrypt ( hls::stream <ap_uint <128>>& plaintextStrm, hls::stream <bool>& endPlaintextStrm, hls::stream <ap_uint <128>>& cipherkeyStrm, hls::stream <ap_uint <128>>& IVStrm, hls::stream <ap_uint <128>>& ciphertextStrm, hls::stream <bool>& endCiphertextStrm )
aes128OfbEncrypt is OFB encryption mode with AES-128 single block cipher.
The algorithm reference is : “Recommendation for Block Cipher Modes of Operation - Methods and Techniques” The implementation is modified for better performance.
Parameters:
| plaintextStrm | Input block stream text to be encrypted, each block is 128 bits. |
| endPlaintextStrm | End flag of block stream plaintext, 1 bit. |
| cipherkeyStrm | Input cipher key used in encryption, 128 bits. |
| IVStrm | Initialization vector for the fisrt iteration of AES encrypition, 128 bits. |
| ciphertextStrm | Output encrypted block stream text, each block is 128 bits. |
| endCiphertextStrm | End flag of block stream ciphertext, 1 bit. |