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craft.cpp
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/*
Modified version of designer's implementation
* Simmulation of boomerang analysis for Skinny
* Date: March 21, 2020
* Author: Hosein Hadipour
* Contact: [email protected]
*/
// CRAFT Cipher
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <time.h>
#include <string>
#include <math.h>
#include <omp.h>
#include <iostream>
using namespace std;
#define Nthreads 12 // Number of parallel threads
typedef unsigned long long int UINT64;
//0x0, 0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7, 0x8, 0x9, 0xA, 0xB, 0xC, 0xD, 0xE, 0xF
const uint8_t S[16] = { 0xc, 0xa, 0xd, 0x3, 0xe, 0xb, 0xf, 0x7, 0x8, 0x9, 0x1, 0x5, 0x0, 0x2, 0x4, 0x6 };
const uint8_t P[16] = { 0xF, 0xC, 0xD, 0xE, 0xA, 0x9, 0x8, 0xB, 0x6, 0x5, 0x4, 0x7, 0x1, 0x2, 0x3, 0x0 };
const uint8_t Q[16] = { 0xC, 0xA, 0xF, 0x5, 0xE, 0x8, 0x9, 0x2, 0xB, 0x3, 0x7, 0x4, 0x6, 0x0, 0x1, 0xD };
const uint8_t RC3[32] = { 0x1, 0x4, 0x2, 0x5, 0x6, 0x7, 0x3, 0x1, 0x4, 0x2, 0x5, 0x6, 0x7, 0x3, 0x1, 0x4, 0x2, 0x5, 0x6, 0x7, 0x3, 0x1, 0x4, 0x2, 0x5, 0x6, 0x7, 0x3, 0x1, 0x4, 0x2, 0x5 };
const uint8_t RC4[32] = { 0x1, 0x8, 0x4, 0x2, 0x9, 0xc, 0x6, 0xb, 0x5, 0xa, 0xd, 0xe, 0xf, 0x7, 0x3, 0x1, 0x8, 0x4, 0x2, 0x9, 0xc, 0x6, 0xb, 0x5, 0xa, 0xd, 0xe, 0xf, 0x7, 0x3, 0x1, 0x8 };
void print_state(uint8_t state[16])
{
for (int i = 0; i < 16; i++)
printf("%01x", state[i]);
printf("\n");
}
void convert_hexstr_to_statearray(string hex_str, uint8_t int_array[16], bool reversed = false)
{
if (reversed == true)
for (size_t i = 0; i < 16; i++)
int_array[15 - i] = static_cast<uint8_t>(stoi(hex_str.substr(i, 1), 0, 16) & 0xf);
else
for (size_t i = 0; i < 16; i++)
int_array[i] = static_cast<uint8_t>(stoi(hex_str.substr(i, 1), 0, 16) & 0xf);
}
void initialize(uint8_t key0[16], uint8_t key1[16], uint8_t master_tweak[16], uint8_t tk[][16]) {
for (uint8_t i = 0; i < 16; i++)
tk[0][i] = (key0[i] & 0xf);
for (uint8_t i = 0; i < 16; i++)
tk[1][i] = (key1[i] & 0xf);
for (uint8_t i = 0; i < 16; i++)
tk[2][i] = tk[0][i];
for (uint8_t i = 0; i < 16; i++)
tk[3][i] = tk[1][i];
for (uint8_t i = 0; i < 16; i++)
tk[0][i] ^= (master_tweak[i] & 0xf);
for (uint8_t i = 0; i < 16; i++)
tk[1][i] ^= (master_tweak[i] & 0xf);
for (uint8_t i = 0; i < 16; i++)
tk[2][i] ^= (master_tweak[Q[i]] & 0xf);
for (uint8_t i = 0; i < 16; i++)
tk[3][i] ^= (master_tweak[Q[i]] & 0xf);
// printf("\nTK_enc00: ");
// for (uint8_t i = 0; i < 16; i++)
// printf("%X", tk[0][i]);
// printf("\nTK_enc01: ");
// for (uint8_t i = 0; i < 16; i++)
// printf("%X", tk[1][i]);
// printf("\nTK_enc10: ");
// for (uint8_t i = 0; i < 16; i++)
// printf("%X", tk[2][i]);
// printf("\nTK_enc11: ");
// for (uint8_t i = 0; i < 16; i++)
// printf("%X", tk[3][i]);
}
void enc(uint8_t R, uint8_t plaintext[16], uint8_t ciphertext[16], uint8_t tk[][16]) {
for (uint8_t i = 0; i < 16; i++) {
ciphertext[i] = plaintext[i] & 0xf;
}
for (uint8_t r = 0; r < R; r++) {
//MixColumn
for (uint8_t i = 0; i < 4; i++) {
ciphertext[i] ^= (ciphertext[i + 8] ^ ciphertext[i + 12]);
ciphertext[i + 4] ^= ciphertext[i + 12];
}
//AddConstant
ciphertext[4] ^= RC4[r];
ciphertext[5] ^= RC3[r];
//AddTweakey
for (uint8_t i = 0; i < 16; i++) {
ciphertext[i] ^= tk[r % 4][i];
}
if (r != 31) {
//Permutation
uint8_t Temp[16];
for (uint8_t i = 0; i < 16; i++)
Temp[P[i]] = ciphertext[i];
// SBox
for (uint8_t i = 0; i < 16; i++)
ciphertext[i] = S[Temp[i]];
}
// Next State
// printf("\nR%02d : ", r + 1);
// for (uint8_t i = 0; i < 16; i++)
// printf("%X", ciphertext[i]);
}
}
void dec(uint8_t R, uint8_t plaintext[16], uint8_t ciphertext[16], uint8_t tk[][16]) {
for (uint8_t i = 0; i < 16; i++) {
plaintext[i] = ciphertext[i] & 0xf;
}
int ind;
for (int r = 0; r < R; r++) {
// SBox
for (uint8_t i = 0; i < 16; i++)
plaintext[i] = S[plaintext[i]];
//Permutation
uint8_t Temp[16];
for (uint8_t i = 0; i < 16; i++)
Temp[i] = plaintext[P[i]];
//AddTweakey
ind = R - r - 1;
for (uint8_t i = 0; i < 16; i++)
plaintext[i] = Temp[i] ^ tk[ind % 4][i];
//AddConstant
plaintext[4] ^= RC4[ind];
plaintext[5] ^= RC3[ind];
//MixColumn
for (uint8_t i = 0; i < 4; i++) {
plaintext[i] ^= (plaintext[i + 8] ^ plaintext[i + 12]);
plaintext[i + 4] ^= plaintext[i + 12];
}
//Next State
// printf("\nR%02d : ", r + 1);
// for (uint8_t i = 0; i < 16; i++)
// printf("%X", plaintext[i]);
}
}
int main() {
int r = 12; // Number of rounds
string k0_str = "1e97469ac59c9ea9";
string k1_str = "fe87e344887e3ee5";
string tweak_str = "c1bd0a3437864c1f";
string p1_str = "7f39ad1a3683588f";
string p2_str = "7f93ad103c235885";
string p3_str = "4329c595f6d51b67";
string p4_str = "4383c59ffc751b6d";
//#################################################################################
uint8_t key0[16];
uint8_t key1[16];
uint8_t master_tweak[16];
uint8_t tk[4][16];
uint8_t p1[16];
uint8_t p2[16];
uint8_t p3[16];
uint8_t p4[16];
uint8_t c1[16];
uint8_t c2[16];
uint8_t c3[16];
uint8_t c4[16];
bool reversed = false;
convert_hexstr_to_statearray(p1_str, p1, reversed);
convert_hexstr_to_statearray(p2_str, p2, reversed);
convert_hexstr_to_statearray(p3_str, p3, reversed);
convert_hexstr_to_statearray(p4_str, p4, reversed);
convert_hexstr_to_statearray(k0_str, key0, reversed);
convert_hexstr_to_statearray(k1_str, key1, reversed);
convert_hexstr_to_statearray(tweak_str, master_tweak, reversed);
initialize(key0, key1, master_tweak, tk);
enc(r, p1, c1, tk);
enc(r, p2, c2, tk);
enc(r, p3, c3, tk);
enc(r, p4, c4, tk);
printf("p1: ");
print_state(p1);
printf("p2: ");
print_state(p2);
printf("c1: ");
print_state(c1);
printf("c2: ");
print_state(c2);
printf("\np3: ");
print_state(p3);
printf("p4: ");
print_state(p4);
printf("c3: ");
print_state(c3);
printf("c4: ");
print_state(c4);
return 0;
}