Encrypt Toyota Camry rf signals keyfob

void ToyotaCamryRFEncrypt(uint8_t key[], uint8_t seed[], uint8_t plaintext[]) {
  uint8_t ciphertext[8];
  uint8_t LFSR[8];
  uint8_t i, j, temp;

  for (i = 0; i < 8; i++) {
    LFSR[i] = seed[i];
  }

  for (i = 0; i < 8; i++) {
    ciphertext[i] = plaintext[i];
  }

  for (i = 0; i < 8; i++) {
    for (j = 0; j < 8; j++) {
      temp = (((((key[j] ^ LFSR[j]) & 0x80) >> 6) ^ ((LFSR[j] & 0x40) >> 5)) & 1) << 6;
      LFSR[j] = (((LFSR[j] << 1) & 0xFF) | (((LFSR[j] & 0x80) >> 7)