testing improved + OFB
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@ -1,402 +0,0 @@
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#include <stdio.h>
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#include <stdint.h>
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/* AES-128 simple implementation template and testing */
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/*
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Author: Ondrej Hladuvka, hladuond@fit.cvut.cz
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Template: Jiri Bucek 2017
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AES specification:
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http://csrc.nist.gov/publications/fips/fips197/fips-197.pdf
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*/
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/* AES Constants */
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// forward sbox
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const uint8_t SBOX[256] = {
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// 0 1 2 3 4 5 6 7 8 9 A B C D E F
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0x63, 0x7c, 0x77, 0x7b, 0xf2, 0x6b, 0x6f, 0xc5, 0x30, 0x01, 0x67, 0x2b, 0xfe, 0xd7, 0xab, 0x76, // 0
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0xca, 0x82, 0xc9, 0x7d, 0xfa, 0x59, 0x47, 0xf0, 0xad, 0xd4, 0xa2, 0xaf, 0x9c, 0xa4, 0x72, 0xc0, // 1
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0xb7, 0xfd, 0x93, 0x26, 0x36, 0x3f, 0xf7, 0xcc, 0x34, 0xa5, 0xe5, 0xf1, 0x71, 0xd8, 0x31, 0x15, // 2
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0x04, 0xc7, 0x23, 0xc3, 0x18, 0x96, 0x05, 0x9a, 0x07, 0x12, 0x80, 0xe2, 0xeb, 0x27, 0xb2, 0x75, // 3
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0x09, 0x83, 0x2c, 0x1a, 0x1b, 0x6e, 0x5a, 0xa0, 0x52, 0x3b, 0xd6, 0xb3, 0x29, 0xe3, 0x2f, 0x84, // 4
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0x53, 0xd1, 0x00, 0xed, 0x20, 0xfc, 0xb1, 0x5b, 0x6a, 0xcb, 0xbe, 0x39, 0x4a, 0x4c, 0x58, 0xcf, // 5
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0xd0, 0xef, 0xaa, 0xfb, 0x43, 0x4d, 0x33, 0x85, 0x45, 0xf9, 0x02, 0x7f, 0x50, 0x3c, 0x9f, 0xa8, // 6
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0x51, 0xa3, 0x40, 0x8f, 0x92, 0x9d, 0x38, 0xf5, 0xbc, 0xb6, 0xda, 0x21, 0x10, 0xff, 0xf3, 0xd2, // 7
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0xcd, 0x0c, 0x13, 0xec, 0x5f, 0x97, 0x44, 0x17, 0xc4, 0xa7, 0x7e, 0x3d, 0x64, 0x5d, 0x19, 0x73, // 8
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0x60, 0x81, 0x4f, 0xdc, 0x22, 0x2a, 0x90, 0x88, 0x46, 0xee, 0xb8, 0x14, 0xde, 0x5e, 0x0b, 0xdb, // 9
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0xe0, 0x32, 0x3a, 0x0a, 0x49, 0x06, 0x24, 0x5c, 0xc2, 0xd3, 0xac, 0x62, 0x91, 0x95, 0xe4, 0x79, // A
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0xe7, 0xc8, 0x37, 0x6d, 0x8d, 0xd5, 0x4e, 0xa9, 0x6c, 0x56, 0xf4, 0xea, 0x65, 0x7a, 0xae, 0x08, // B
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0xba, 0x78, 0x25, 0x2e, 0x1c, 0xa6, 0xb4, 0xc6, 0xe8, 0xdd, 0x74, 0x1f, 0x4b, 0xbd, 0x8b, 0x8a, // C
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0x70, 0x3e, 0xb5, 0x66, 0x48, 0x03, 0xf6, 0x0e, 0x61, 0x35, 0x57, 0xb9, 0x86, 0xc1, 0x1d, 0x9e, // D
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0xe1, 0xf8, 0x98, 0x11, 0x69, 0xd9, 0x8e, 0x94, 0x9b, 0x1e, 0x87, 0xe9, 0xce, 0x55, 0x28, 0xdf, // E
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0x8c, 0xa1, 0x89, 0x0d, 0xbf, 0xe6, 0x42, 0x68, 0x41, 0x99, 0x2d, 0x0f, 0xb0, 0x54, 0xbb, 0x16 // F
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};
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const uint8_t rCon[12] = {
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0x8d, 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36,
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};
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/* AES state type */
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typedef uint32_t t_state[4];
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/* Helper functions */
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void hexprint16(uint8_t *p) {
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for (int i = 0; i < 16; i++)
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printf("%02hhx ", p[i]);
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puts("");
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}
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void hexprintw(uint32_t w) {
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for (int i = 0; i < 32; i += 8)
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printf("%02hhx ", (w >> i) & 0xffU);
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}
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void hexprintws(uint32_t * p, int cnt) {
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for (int i = 0; i < cnt; i++)
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hexprintw(p[i]);
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puts("");
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}
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void printstate(t_state s) {
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hexprintw(s[0]);
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hexprintw(s[1]);
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hexprintw(s[2]);
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hexprintw(s[3]);
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puts("");
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}
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uint32_t word(uint8_t a0, uint8_t a1, uint8_t a2, uint8_t a3) {
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return a0 | (uint32_t)a1 << 8 | (uint32_t)a2 << 16 | (uint32_t)a3 << 24;
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}
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uint8_t wbyte(uint32_t w, int pos) {
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return (w >> (pos * 8)) & 0xff;
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}
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// **************** AES functions ****************
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uint32_t subWord(uint32_t w) {
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return word(SBOX[wbyte(w, 0)], SBOX[wbyte(w, 1)], SBOX[wbyte(w, 2)], SBOX[wbyte(w, 3)]);
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}
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void subBytes(t_state s) {
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unsigned char* p = reinterpret_cast<unsigned char*>(s);
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for (int i = 0; i < 16; ++i)
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p[i] = SBOX[p[i]];
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}
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void shiftRows(t_state s) {
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uint32_t tmp[4];
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tmp[0] = s[0] & 0x0000FF00;
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tmp[1] = s[1] & 0x0000FF00;
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tmp[2] = s[2] & 0x0000FF00;
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tmp[3] = s[3] & 0x0000FF00;
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s[0] = (s[0] & 0xFFFF00FF) | tmp[1];
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s[1] = (s[1] & 0xFFFF00FF) | tmp[2];
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s[2] = (s[2] & 0xFFFF00FF) | tmp[3];
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s[3] = (s[3] & 0xFFFF00FF) | tmp[0];
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tmp[0] = s[0] & 0x00FF0000;
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tmp[1] = s[1] & 0x00FF0000;
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tmp[2] = s[2] & 0x00FF0000;
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tmp[3] = s[3] & 0x00FF0000;
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s[0] = (s[0] & 0xFF00FFFF) | tmp[2];
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s[1] = (s[1] & 0xFF00FFFF) | tmp[3];
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s[2] = (s[2] & 0xFF00FFFF) | tmp[0];
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s[3] = (s[3] & 0xFF00FFFF) | tmp[1];
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tmp[0] = s[0] & 0xFF000000;
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tmp[1] = s[1] & 0xFF000000;
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tmp[2] = s[2] & 0xFF000000;
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tmp[3] = s[3] & 0xFF000000;
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s[0] = (s[0] & 0x00FFFFFF) | tmp[3];
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s[1] = (s[1] & 0x00FFFFFF) | tmp[0];
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s[2] = (s[2] & 0x00FFFFFF) | tmp[1];
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s[3] = (s[3] & 0x00FFFFFF) | tmp[2];
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}
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uint8_t xtime(uint8_t c) {
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uint8_t m = ((c & 0x80) >> 7) * 0x1B;
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return (c << 1) ^ m;
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}
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void mixColumns(t_state s) {
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for (int i = 0; i < 4; i++) {
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uint8_t a0 = wbyte(s[i], 0);
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uint8_t a1 = wbyte(s[i], 1);
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uint8_t a2 = wbyte(s[i], 2);
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uint8_t a3 = wbyte(s[i], 3);
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uint8_t r0 = xtime(a0) ^ xtime(a1) ^ a1 ^ a2 ^ a3;
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uint8_t r1 = xtime(a1) ^ xtime(a2) ^ a2 ^ a3 ^ a0;
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uint8_t r2 = xtime(a2) ^ xtime(a3) ^ a3 ^ a0 ^ a1;
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uint8_t r3 = xtime(a3) ^ xtime(a0) ^ a0 ^ a1 ^ a2;
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s[i] = word(r0, r1, r2, r3);
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}
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}
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/*
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* Key expansion from 128bits (4*32b)
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* to 11 round keys (11*4*32b)
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* each round key is 4*32b
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*/
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void expandKey(uint8_t k[16], uint32_t ek[44]) {
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for (int i = 0; i < 4; i++) {
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ek[i] = word(k[4*i], k[4*i + 1], k[4*i + 2], k[4*i + 3]);
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}
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for (int i = 4; i < 44; i++) {
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uint32_t temp = ek[i - 1];
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if (i % 4 == 0) {
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// RotWord, SubWord, and XOR with Rcon
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temp = subWord((temp >> 8) | (temp << 24)) ^ rCon[i / 4];
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}
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ek[i] = ek[i - 4] ^ temp;
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}
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}
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/* Adding expanded round key (prepared before) */
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void addRoundKey(t_state s, uint32_t ek[], short index) {
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for (int i = 0; i < 4; i++) {
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s[i] ^= ek[index + i];
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}
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}
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void aes128(uint8_t *in, uint8_t *out, uint32_t * expKey)
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{
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t_state state;
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state[0] = word(in[0], in[1], in[2], in[3]);
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state[1] = word(in[4], in[5], in[6], in[7]);
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state[2] = word(in[8], in[9], in[10], in[11]);
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state[3] = word(in[12], in[13], in[14], in[15]);
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printf("IN: ");
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printstate(state);
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for (int i = 0; i < 11; i++) {
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printf("K%02d: ", i);
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hexprintws(expKey + 4 * i, 4);
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}
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addRoundKey(state, expKey, 0);
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for (int round = 0; round < 9; ++round) {
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printf("round: %d\n", round);
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subBytes(state);
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shiftRows(state);
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mixColumns(state);
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addRoundKey(state, expKey, round * 4 + 4);
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}
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subBytes(state);
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shiftRows(state);
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addRoundKey(state, expKey, 10 * 4);
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out[0] = wbyte(state[0], 0);
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out[1] = wbyte(state[0], 1);
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out[2] = wbyte(state[0], 2);
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out[3] = wbyte(state[0], 3);
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out[4] = wbyte(state[1], 0);
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out[5] = wbyte(state[1], 1);
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out[6] = wbyte(state[1], 2);
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out[7] = wbyte(state[1], 3);
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out[8] = wbyte(state[2], 0);
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out[9] = wbyte(state[2], 1);
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out[10] = wbyte(state[2], 2);
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out[11] = wbyte(state[2], 3);
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out[12] = wbyte(state[3], 0);
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out[13] = wbyte(state[3], 1);
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out[14] = wbyte(state[3], 2);
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out[15] = wbyte(state[3], 3);
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}
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//****************************
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// MAIN function: AES testing
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//****************************
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int main(int argc, char* argv[])
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{
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int test_failed = 0;
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// test subBytes
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printf("Testing subBytes\n");
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{
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t_state state = { 0x01234567,
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0x89abcdef,
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0xdeadbeef,
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0x00112233 };
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t_state res_state = { 0x7c266e85,
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0xa762bddf,
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0x1d95aedf,
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0x638293c3 };
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subBytes(state);
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// printf("0x%08x, 0x%08x, 0x%08x, 0x%08x\n", state[0], state[1], state[2], state[3]);
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for (int i = 0; i < 4; i++) {
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if (state[i] != res_state[i]) { printf("Mismatch at state[%d]!\n", i); test_failed = 1; }
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}
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}
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// test shiftRows
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printf("Testing shiftRows\n");
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{
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t_state state = { 0x01234567,
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0x89abcdef,
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0xdeadbeef,
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0x00112233 };
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t_state res_state = { 0x00adcd67,
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0x0111beef,
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0x892322ef,
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0xdeab4533 };
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shiftRows(state);
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// printf("0x%08x, 0x%08x, 0x%08x, 0x%08x\n", state[0], state[1], state[2], state[3]);
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for (int i = 0; i < 4; i++) {
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if (state[i] != res_state[i]) { printf("Mismatch at state[%d]! 0x%08x 0x%08x\n", i, res_state[i], state[i]); test_failed = 1; }
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}
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}
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// test xtime
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printf("Testing xtime\n");
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{
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uint8_t res[256] = { 0x00, 0x02, 0x04, 0x06, 0x08, 0x0a, 0x0c, 0x0e, 0x10, 0x12,
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0x14, 0x16, 0x18, 0x1a, 0x1c, 0x1e, 0x20, 0x22, 0x24, 0x26,
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0x28, 0x2a, 0x2c, 0x2e, 0x30, 0x32, 0x34, 0x36, 0x38, 0x3a,
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0x3c, 0x3e, 0x40, 0x42, 0x44, 0x46, 0x48, 0x4a, 0x4c, 0x4e,
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0x50, 0x52, 0x54, 0x56, 0x58, 0x5a, 0x5c, 0x5e, 0x60, 0x62,
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0x64, 0x66, 0x68, 0x6a, 0x6c, 0x6e, 0x70, 0x72, 0x74, 0x76,
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0x78, 0x7a, 0x7c, 0x7e, 0x80, 0x82, 0x84, 0x86, 0x88, 0x8a,
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0x8c, 0x8e, 0x90, 0x92, 0x94, 0x96, 0x98, 0x9a, 0x9c, 0x9e,
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0xa0, 0xa2, 0xa4, 0xa6, 0xa8, 0xaa, 0xac, 0xae, 0xb0, 0xb2,
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0xb4, 0xb6, 0xb8, 0xba, 0xbc, 0xbe, 0xc0, 0xc2, 0xc4, 0xc6,
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0xc8, 0xca, 0xcc, 0xce, 0xd0, 0xd2, 0xd4, 0xd6, 0xd8, 0xda,
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0xdc, 0xde, 0xe0, 0xe2, 0xe4, 0xe6, 0xe8, 0xea, 0xec, 0xee,
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0xf0, 0xf2, 0xf4, 0xf6, 0xf8, 0xfa, 0xfc, 0xfe, 0x1b, 0x19,
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0x1f, 0x1d, 0x13, 0x11, 0x17, 0x15, 0x0b, 0x09, 0x0f, 0x0d,
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0x03, 0x01, 0x07, 0x05, 0x3b, 0x39, 0x3f, 0x3d, 0x33, 0x31,
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0x37, 0x35, 0x2b, 0x29, 0x2f, 0x2d, 0x23, 0x21, 0x27, 0x25,
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0x5b, 0x59, 0x5f, 0x5d, 0x53, 0x51, 0x57, 0x55, 0x4b, 0x49,
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0x4f, 0x4d, 0x43, 0x41, 0x47, 0x45, 0x7b, 0x79, 0x7f, 0x7d,
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0x73, 0x71, 0x77, 0x75, 0x6b, 0x69, 0x6f, 0x6d, 0x63, 0x61,
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0x67, 0x65, 0x9b, 0x99, 0x9f, 0x9d, 0x93, 0x91, 0x97, 0x95,
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0x8b, 0x89, 0x8f, 0x8d, 0x83, 0x81, 0x87, 0x85, 0xbb, 0xb9,
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0xbf, 0xbd, 0xb3, 0xb1, 0xb7, 0xb5, 0xab, 0xa9, 0xaf, 0xad,
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0xa3, 0xa1, 0xa7, 0xa5, 0xdb, 0xd9, 0xdf, 0xdd, 0xd3, 0xd1,
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0xd7, 0xd5, 0xcb, 0xc9, 0xcf, 0xcd, 0xc3, 0xc1, 0xc7, 0xc5,
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0xfb, 0xf9, 0xff, 0xfd, 0xf3, 0xf1, 0xf7, 0xf5, 0xeb, 0xe9,
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0xef, 0xed, 0xe3, 0xe1, 0xe7, 0xe5 };
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for (uint16_t i = 0; i < 256; i++) {
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//printf("0x%02hhx, ", xtime((uint8_t)i));
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if (xtime((uint8_t)i)!=res[i]) {
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printf("\nMismatch at xtime(0x%02x)! Comparison interrupted.\n", i); test_failed = 1;
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break;
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}
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}
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// puts("");
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}
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// test mixColumns
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printf("Testing mixColumns\n");
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{
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t_state state = { 0x01234567,
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0x89abcdef,
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0xdeadbeef,
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0x00112233 };
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t_state res_state = { 0xcd678923,
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0x45ef01ab,
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0x9e69ba6f,
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0x66334411 };
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mixColumns(state);
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// printf("0x%08x, 0x%08x, 0x%08x, 0x%08x\n", state[0], state[1], state[2], state[3]);
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// printf("0x%08x, 0x%08x, 0x%08x, 0x%08x\n", res_state[0], res_state[1], res_state[2], res_state[3]);
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for (int i = 0; i < 4; i++) {
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if (state[i] != res_state[i]) { printf("Mismatch at state[%d]! 0x%08x\n", i, state[i]); test_failed = 1; }
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}
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}
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// test key expansion
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printf("Testing expandKey\n");
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{
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uint8_t key_b[16] = { 0xef, 0xbe, 0xad, 0xde, 0xbe, 0xba, 0xfe, 0xca, 0x0D, 0xF0, 0xAD, 0xBA, 0x00, 0x11, 0x22, 0x33 };
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uint32_t key_w[44] = { 0 /*, ...*/ };
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uint32_t res_key_w[44] = {
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0xdeadbeef, 0xcafebabe, 0xbaadf00d, 0x33221100,
|
||||
0xbd6e2d6c, 0x779097d2, 0xcd3d67df, 0xfe1f76df,
|
||||
0x23d5ed56, 0x54457a84, 0x99781d5b, 0x67676b84,
|
||||
0x7c50682d, 0x281512a9, 0xb16d0ff2, 0xd60a6476,
|
||||
0x44a60f66, 0x6cb31dcf, 0xddde123d, 0x0bd4764b,
|
||||
0xf78d474e, 0x9b3e5a81, 0x46e048bc, 0x4d343ef7,
|
||||
0x9f6e5fdc, 0x0450055d, 0x42b04de1, 0x0f847316,
|
||||
0xd8180013, 0xdc48054e, 0x9ef848af, 0x917c3bb9,
|
||||
0x8e991071, 0x52d1153f, 0xcc295d90, 0x5d556629,
|
||||
0x2bd5ec59, 0x7904f966, 0xb52da4f6, 0xe878c2df,
|
||||
0xb54e504a, 0xcc4aa92c, 0x79670dda, 0x911fcf05,
|
||||
};
|
||||
expandKey(key_b, key_w);
|
||||
for (int i = 0; i < 44; i++) {
|
||||
// printf("0x%08x, ", key_w[i]);
|
||||
// if (i % 4 == 3) printf("\n");
|
||||
}
|
||||
|
||||
for (int i = 0; i < 44; i++) {
|
||||
if (key_w[i] != res_key_w[i]) {
|
||||
printf("Mismatch at key_w[%d]! Comparison interrupted.\n", i); test_failed = 1;
|
||||
break;
|
||||
}
|
||||
}
|
||||
printf("Testing addRoundKey\n");
|
||||
// test AddRoundKey (last round)
|
||||
t_state state = { 0x01234567, 0x89abcdef, 0xdeadbeef, 0x00112233 };
|
||||
t_state res_state = { 0xb46d152d, 0x45e164c3, 0xa7cab335, 0x910eed36 };
|
||||
addRoundKey(state, key_w, 40);
|
||||
printf("0x%08x, 0x%08x, 0x%08x, 0x%08x\n", state[0], state[1], state[2], state[3]);
|
||||
for (int i = 0; i < 4; i++) {
|
||||
if (state[i] != res_state[i]) { printf("Mismatch at state[%d]!\n", i); }
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
// test aes encryption
|
||||
printf("Testing aes\n");
|
||||
{
|
||||
uint8_t key[16] = { 0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77, 0x88, 0x99, 0xaa, 0xbb, 0xcc, 0xdd, 0xee, 0xff };
|
||||
uint8_t in[16] = { 0xab, 0xcd, 0xef, 0x01, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef, 0x01, 0x23, 0x45, 0x67, 0x89 };
|
||||
uint8_t out[16] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
|
||||
uint8_t res[16] = { 0xa3, 0x3a, 0xca, 0x68, 0x72, 0xa2, 0x27, 0x74, 0xbf, 0x99, 0xf3, 0x71, 0xaa, 0x99, 0xd2, 0x5a };
|
||||
|
||||
printf("Key: ");
|
||||
hexprint16(key);
|
||||
puts("");
|
||||
printf("In: ");
|
||||
hexprint16(in);
|
||||
puts("");
|
||||
|
||||
uint32_t expKey[11 * 4];
|
||||
expandKey(key, expKey);
|
||||
|
||||
aes128(in, out, expKey);
|
||||
|
||||
printf("Out: ");
|
||||
hexprint16(out);
|
||||
puts("");
|
||||
|
||||
for (int i = 0; i < 16; i++) {
|
||||
if (out[i] != res[i]) { printf("Mismatch at out[%02d]! 0x%02x 0x%02x\n", i, out[i], res[i]); test_failed = 1; }
|
||||
}
|
||||
}
|
||||
if (test_failed) {
|
||||
printf("|*********** SOME TEST(S) FAILED ***********|\n");
|
||||
printf("Please fix me!\n");
|
||||
}
|
||||
else {
|
||||
printf("============== All tests OK! ===============\n");
|
||||
}
|
||||
return test_failed;
|
||||
}
|
||||
|
|
@ -0,0 +1,391 @@
|
|||
#include <stdio.h>
|
||||
#include <stdint.h>
|
||||
|
||||
/* AES-128 simple implementation template and testing */
|
||||
|
||||
/*
|
||||
Author: Ondrej Hladuvka, hladuond@fit.cvut.cz
|
||||
Template: Jiri Bucek 2017
|
||||
AES specification:
|
||||
http://csrc.nist.gov/publications/fips/fips197/fips-197.pdf
|
||||
*/
|
||||
|
||||
/* AES Constants */
|
||||
|
||||
// forward sbox
|
||||
const uint8_t SBOX[256] = {
|
||||
// 0 1 2 3 4 5 6 7 8 9 A B C D E F
|
||||
0x63, 0x7c, 0x77, 0x7b, 0xf2, 0x6b, 0x6f, 0xc5, 0x30, 0x01, 0x67, 0x2b, 0xfe, 0xd7, 0xab, 0x76, // 0
|
||||
0xca, 0x82, 0xc9, 0x7d, 0xfa, 0x59, 0x47, 0xf0, 0xad, 0xd4, 0xa2, 0xaf, 0x9c, 0xa4, 0x72, 0xc0, // 1
|
||||
0xb7, 0xfd, 0x93, 0x26, 0x36, 0x3f, 0xf7, 0xcc, 0x34, 0xa5, 0xe5, 0xf1, 0x71, 0xd8, 0x31, 0x15, // 2
|
||||
0x04, 0xc7, 0x23, 0xc3, 0x18, 0x96, 0x05, 0x9a, 0x07, 0x12, 0x80, 0xe2, 0xeb, 0x27, 0xb2, 0x75, // 3
|
||||
0x09, 0x83, 0x2c, 0x1a, 0x1b, 0x6e, 0x5a, 0xa0, 0x52, 0x3b, 0xd6, 0xb3, 0x29, 0xe3, 0x2f, 0x84, // 4
|
||||
0x53, 0xd1, 0x00, 0xed, 0x20, 0xfc, 0xb1, 0x5b, 0x6a, 0xcb, 0xbe, 0x39, 0x4a, 0x4c, 0x58, 0xcf, // 5
|
||||
0xd0, 0xef, 0xaa, 0xfb, 0x43, 0x4d, 0x33, 0x85, 0x45, 0xf9, 0x02, 0x7f, 0x50, 0x3c, 0x9f, 0xa8, // 6
|
||||
0x51, 0xa3, 0x40, 0x8f, 0x92, 0x9d, 0x38, 0xf5, 0xbc, 0xb6, 0xda, 0x21, 0x10, 0xff, 0xf3, 0xd2, // 7
|
||||
0xcd, 0x0c, 0x13, 0xec, 0x5f, 0x97, 0x44, 0x17, 0xc4, 0xa7, 0x7e, 0x3d, 0x64, 0x5d, 0x19, 0x73, // 8
|
||||
0x60, 0x81, 0x4f, 0xdc, 0x22, 0x2a, 0x90, 0x88, 0x46, 0xee, 0xb8, 0x14, 0xde, 0x5e, 0x0b, 0xdb, // 9
|
||||
0xe0, 0x32, 0x3a, 0x0a, 0x49, 0x06, 0x24, 0x5c, 0xc2, 0xd3, 0xac, 0x62, 0x91, 0x95, 0xe4, 0x79, // A
|
||||
0xe7, 0xc8, 0x37, 0x6d, 0x8d, 0xd5, 0x4e, 0xa9, 0x6c, 0x56, 0xf4, 0xea, 0x65, 0x7a, 0xae, 0x08, // B
|
||||
0xba, 0x78, 0x25, 0x2e, 0x1c, 0xa6, 0xb4, 0xc6, 0xe8, 0xdd, 0x74, 0x1f, 0x4b, 0xbd, 0x8b, 0x8a, // C
|
||||
0x70, 0x3e, 0xb5, 0x66, 0x48, 0x03, 0xf6, 0x0e, 0x61, 0x35, 0x57, 0xb9, 0x86, 0xc1, 0x1d, 0x9e, // D
|
||||
0xe1, 0xf8, 0x98, 0x11, 0x69, 0xd9, 0x8e, 0x94, 0x9b, 0x1e, 0x87, 0xe9, 0xce, 0x55, 0x28, 0xdf, // E
|
||||
0x8c, 0xa1, 0x89, 0x0d, 0xbf, 0xe6, 0x42, 0x68, 0x41, 0x99, 0x2d, 0x0f, 0xb0, 0x54, 0xbb, 0x16 // F
|
||||
};
|
||||
|
||||
const uint8_t rCon[12] = {
|
||||
0x8d, 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36,
|
||||
};
|
||||
|
||||
/* AES state type */
|
||||
typedef uint32_t t_state[4];
|
||||
|
||||
/* Helper functions */
|
||||
void hexprint16(uint8_t *p) {
|
||||
for (int i = 0; i < 16; i++)
|
||||
printf("%02hhx ", p[i]);
|
||||
puts("");
|
||||
}
|
||||
|
||||
void hexprintw(uint32_t w) {
|
||||
for (int i = 0; i < 32; i += 8)
|
||||
printf("%02hhx ", (w >> i) & 0xffU);
|
||||
}
|
||||
|
||||
void hexprintws(uint32_t * p, int cnt) {
|
||||
for (int i = 0; i < cnt; i++)
|
||||
hexprintw(p[i]);
|
||||
puts("");
|
||||
}
|
||||
void printstate(t_state s) {
|
||||
hexprintw(s[0]);
|
||||
hexprintw(s[1]);
|
||||
hexprintw(s[2]);
|
||||
hexprintw(s[3]);
|
||||
puts("");
|
||||
}
|
||||
|
||||
uint32_t word(uint8_t a0, uint8_t a1, uint8_t a2, uint8_t a3) {
|
||||
return a0 | (uint32_t)a1 << 8 | (uint32_t)a2 << 16 | (uint32_t)a3 << 24;
|
||||
}
|
||||
|
||||
uint8_t wbyte(uint32_t w, int pos) {
|
||||
return (w >> (pos * 8)) & 0xff;
|
||||
}
|
||||
|
||||
// **************** AES functions ****************
|
||||
uint32_t subWord(uint32_t w) {
|
||||
return word(SBOX[wbyte(w, 0)], SBOX[wbyte(w, 1)], SBOX[wbyte(w, 2)], SBOX[wbyte(w, 3)]);
|
||||
}
|
||||
|
||||
void subBytes(t_state s) {
|
||||
unsigned char* p = reinterpret_cast<unsigned char*>(s);
|
||||
for (int i = 0; i < 16; ++i)
|
||||
p[i] = SBOX[p[i]];
|
||||
}
|
||||
|
||||
void shiftRows(t_state s) {
|
||||
uint32_t tmp[4];
|
||||
|
||||
tmp[0] = s[0] & 0x0000FF00;
|
||||
tmp[1] = s[1] & 0x0000FF00;
|
||||
tmp[2] = s[2] & 0x0000FF00;
|
||||
tmp[3] = s[3] & 0x0000FF00;
|
||||
|
||||
s[0] = (s[0] & 0xFFFF00FF) | tmp[1];
|
||||
s[1] = (s[1] & 0xFFFF00FF) | tmp[2];
|
||||
s[2] = (s[2] & 0xFFFF00FF) | tmp[3];
|
||||
s[3] = (s[3] & 0xFFFF00FF) | tmp[0];
|
||||
|
||||
tmp[0] = s[0] & 0x00FF0000;
|
||||
tmp[1] = s[1] & 0x00FF0000;
|
||||
tmp[2] = s[2] & 0x00FF0000;
|
||||
tmp[3] = s[3] & 0x00FF0000;
|
||||
|
||||
s[0] = (s[0] & 0xFF00FFFF) | tmp[2];
|
||||
s[1] = (s[1] & 0xFF00FFFF) | tmp[3];
|
||||
s[2] = (s[2] & 0xFF00FFFF) | tmp[0];
|
||||
s[3] = (s[3] & 0xFF00FFFF) | tmp[1];
|
||||
|
||||
tmp[0] = s[0] & 0xFF000000;
|
||||
tmp[1] = s[1] & 0xFF000000;
|
||||
tmp[2] = s[2] & 0xFF000000;
|
||||
tmp[3] = s[3] & 0xFF000000;
|
||||
|
||||
s[0] = (s[0] & 0x00FFFFFF) | tmp[3];
|
||||
s[1] = (s[1] & 0x00FFFFFF) | tmp[0];
|
||||
s[2] = (s[2] & 0x00FFFFFF) | tmp[1];
|
||||
s[3] = (s[3] & 0x00FFFFFF) | tmp[2];
|
||||
}
|
||||
|
||||
uint8_t xtime(uint8_t c) {
|
||||
uint8_t m = ((c & 0x80) >> 7) * 0x1B;
|
||||
return (c << 1) ^ m;
|
||||
}
|
||||
|
||||
void mixColumns(t_state s) {
|
||||
for (int i = 0; i < 4; i++) {
|
||||
uint8_t a0 = wbyte(s[i], 0);
|
||||
uint8_t a1 = wbyte(s[i], 1);
|
||||
uint8_t a2 = wbyte(s[i], 2);
|
||||
uint8_t a3 = wbyte(s[i], 3);
|
||||
|
||||
uint8_t r0 = xtime(a0) ^ xtime(a1) ^ a1 ^ a2 ^ a3;
|
||||
uint8_t r1 = xtime(a1) ^ xtime(a2) ^ a2 ^ a3 ^ a0;
|
||||
uint8_t r2 = xtime(a2) ^ xtime(a3) ^ a3 ^ a0 ^ a1;
|
||||
uint8_t r3 = xtime(a3) ^ xtime(a0) ^ a0 ^ a1 ^ a2;
|
||||
|
||||
s[i] = word(r0, r1, r2, r3);
|
||||
}
|
||||
}
|
||||
|
||||
/*
|
||||
* Key expansion from 128bits (4*32b)
|
||||
* to 11 round keys (11*4*32b)
|
||||
* each round key is 4*32b
|
||||
*/
|
||||
void expandKey(uint8_t k[16], uint32_t ek[44]) {
|
||||
for (int i = 0; i < 4; i++) {
|
||||
ek[i] = word(k[4*i], k[4*i + 1], k[4*i + 2], k[4*i + 3]);
|
||||
}
|
||||
|
||||
for (int i = 4; i < 44; i++) {
|
||||
uint32_t temp = ek[i - 1];
|
||||
if (i % 4 == 0) {
|
||||
// RotWord, SubWord, and XOR with Rcon
|
||||
temp = subWord((temp >> 8) | (temp << 24)) ^ rCon[i / 4];
|
||||
}
|
||||
ek[i] = ek[i - 4] ^ temp;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
/* Adding expanded round key (prepared before) */
|
||||
void addRoundKey(t_state s, uint32_t ek[], short index) {
|
||||
for (int i = 0; i < 4; i++) {
|
||||
s[i] ^= ek[index + i];
|
||||
}
|
||||
}
|
||||
|
||||
void aes128_4(uint8_t *in, uint8_t *out, uint32_t * expKey) {
|
||||
t_state state;
|
||||
|
||||
state[0] = word(in[0], in[1], in[2], in[3]);
|
||||
state[1] = word(in[4], in[5], in[6], in[7]);
|
||||
state[2] = word(in[8], in[9], in[10], in[11]);
|
||||
state[3] = word(in[12], in[13], in[14], in[15]);
|
||||
|
||||
addRoundKey(state, expKey, 0);
|
||||
for (int round = 0; round < 9; ++round) {
|
||||
subBytes(state);
|
||||
shiftRows(state);
|
||||
mixColumns(state);
|
||||
addRoundKey(state, expKey, round * 4 + 4);
|
||||
}
|
||||
|
||||
subBytes(state);
|
||||
shiftRows(state);
|
||||
addRoundKey(state, expKey, 10 * 4);
|
||||
|
||||
out[0] = wbyte(state[0], 0);
|
||||
out[1] = wbyte(state[0], 1);
|
||||
out[2] = wbyte(state[0], 2);
|
||||
out[3] = wbyte(state[0], 3);
|
||||
|
||||
out[4] = wbyte(state[1], 0);
|
||||
out[5] = wbyte(state[1], 1);
|
||||
out[6] = wbyte(state[1], 2);
|
||||
out[7] = wbyte(state[1], 3);
|
||||
|
||||
out[8] = wbyte(state[2], 0);
|
||||
out[9] = wbyte(state[2], 1);
|
||||
out[10] = wbyte(state[2], 2);
|
||||
out[11] = wbyte(state[2], 3);
|
||||
|
||||
out[12] = wbyte(state[3], 0);
|
||||
out[13] = wbyte(state[3], 1);
|
||||
out[14] = wbyte(state[3], 2);
|
||||
out[15] = wbyte(state[3], 3);
|
||||
|
||||
}
|
||||
|
||||
//****************************
|
||||
// MAIN function: AES testing
|
||||
//****************************
|
||||
// int main(int argc, char* argv[])
|
||||
// {
|
||||
// int test_failed = 0;
|
||||
// // test subBytes
|
||||
// printf("Testing subBytes\n");
|
||||
// {
|
||||
// t_state state = { 0x01234567,
|
||||
// 0x89abcdef,
|
||||
// 0xdeadbeef,
|
||||
// 0x00112233 };
|
||||
|
||||
// t_state res_state = { 0x7c266e85,
|
||||
// 0xa762bddf,
|
||||
// 0x1d95aedf,
|
||||
// 0x638293c3 };
|
||||
// subBytes(state);
|
||||
// // printf("0x%08x, 0x%08x, 0x%08x, 0x%08x\n", state[0], state[1], state[2], state[3]);
|
||||
// for (int i = 0; i < 4; i++) {
|
||||
// if (state[i] != res_state[i]) { printf("Mismatch at state[%d]!\n", i); test_failed = 1; }
|
||||
// }
|
||||
// }
|
||||
// // test shiftRows
|
||||
// printf("Testing shiftRows\n");
|
||||
|
||||
// {
|
||||
// t_state state = { 0x01234567,
|
||||
// 0x89abcdef,
|
||||
// 0xdeadbeef,
|
||||
// 0x00112233 };
|
||||
|
||||
// t_state res_state = { 0x00adcd67,
|
||||
// 0x0111beef,
|
||||
// 0x892322ef,
|
||||
// 0xdeab4533 };
|
||||
// shiftRows(state);
|
||||
// // printf("0x%08x, 0x%08x, 0x%08x, 0x%08x\n", state[0], state[1], state[2], state[3]);
|
||||
// for (int i = 0; i < 4; i++) {
|
||||
// if (state[i] != res_state[i]) { printf("Mismatch at state[%d]! 0x%08x 0x%08x\n", i, res_state[i], state[i]); test_failed = 1; }
|
||||
// }
|
||||
// }
|
||||
// // test xtime
|
||||
// printf("Testing xtime\n");
|
||||
// {
|
||||
// uint8_t res[256] = { 0x00, 0x02, 0x04, 0x06, 0x08, 0x0a, 0x0c, 0x0e, 0x10, 0x12,
|
||||
// 0x14, 0x16, 0x18, 0x1a, 0x1c, 0x1e, 0x20, 0x22, 0x24, 0x26,
|
||||
// 0x28, 0x2a, 0x2c, 0x2e, 0x30, 0x32, 0x34, 0x36, 0x38, 0x3a,
|
||||
// 0x3c, 0x3e, 0x40, 0x42, 0x44, 0x46, 0x48, 0x4a, 0x4c, 0x4e,
|
||||
// 0x50, 0x52, 0x54, 0x56, 0x58, 0x5a, 0x5c, 0x5e, 0x60, 0x62,
|
||||
// 0x64, 0x66, 0x68, 0x6a, 0x6c, 0x6e, 0x70, 0x72, 0x74, 0x76,
|
||||
// 0x78, 0x7a, 0x7c, 0x7e, 0x80, 0x82, 0x84, 0x86, 0x88, 0x8a,
|
||||
// 0x8c, 0x8e, 0x90, 0x92, 0x94, 0x96, 0x98, 0x9a, 0x9c, 0x9e,
|
||||
// 0xa0, 0xa2, 0xa4, 0xa6, 0xa8, 0xaa, 0xac, 0xae, 0xb0, 0xb2,
|
||||
// 0xb4, 0xb6, 0xb8, 0xba, 0xbc, 0xbe, 0xc0, 0xc2, 0xc4, 0xc6,
|
||||
// 0xc8, 0xca, 0xcc, 0xce, 0xd0, 0xd2, 0xd4, 0xd6, 0xd8, 0xda,
|
||||
// 0xdc, 0xde, 0xe0, 0xe2, 0xe4, 0xe6, 0xe8, 0xea, 0xec, 0xee,
|
||||
// 0xf0, 0xf2, 0xf4, 0xf6, 0xf8, 0xfa, 0xfc, 0xfe, 0x1b, 0x19,
|
||||
// 0x1f, 0x1d, 0x13, 0x11, 0x17, 0x15, 0x0b, 0x09, 0x0f, 0x0d,
|
||||
// 0x03, 0x01, 0x07, 0x05, 0x3b, 0x39, 0x3f, 0x3d, 0x33, 0x31,
|
||||
// 0x37, 0x35, 0x2b, 0x29, 0x2f, 0x2d, 0x23, 0x21, 0x27, 0x25,
|
||||
// 0x5b, 0x59, 0x5f, 0x5d, 0x53, 0x51, 0x57, 0x55, 0x4b, 0x49,
|
||||
// 0x4f, 0x4d, 0x43, 0x41, 0x47, 0x45, 0x7b, 0x79, 0x7f, 0x7d,
|
||||
// 0x73, 0x71, 0x77, 0x75, 0x6b, 0x69, 0x6f, 0x6d, 0x63, 0x61,
|
||||
// 0x67, 0x65, 0x9b, 0x99, 0x9f, 0x9d, 0x93, 0x91, 0x97, 0x95,
|
||||
// 0x8b, 0x89, 0x8f, 0x8d, 0x83, 0x81, 0x87, 0x85, 0xbb, 0xb9,
|
||||
// 0xbf, 0xbd, 0xb3, 0xb1, 0xb7, 0xb5, 0xab, 0xa9, 0xaf, 0xad,
|
||||
// 0xa3, 0xa1, 0xa7, 0xa5, 0xdb, 0xd9, 0xdf, 0xdd, 0xd3, 0xd1,
|
||||
// 0xd7, 0xd5, 0xcb, 0xc9, 0xcf, 0xcd, 0xc3, 0xc1, 0xc7, 0xc5,
|
||||
// 0xfb, 0xf9, 0xff, 0xfd, 0xf3, 0xf1, 0xf7, 0xf5, 0xeb, 0xe9,
|
||||
// 0xef, 0xed, 0xe3, 0xe1, 0xe7, 0xe5 };
|
||||
// for (uint16_t i = 0; i < 256; i++) {
|
||||
// //printf("0x%02hhx, ", xtime((uint8_t)i));
|
||||
// if (xtime((uint8_t)i)!=res[i]) {
|
||||
// printf("\nMismatch at xtime(0x%02x)! Comparison interrupted.\n", i); test_failed = 1;
|
||||
// break;
|
||||
// }
|
||||
// }
|
||||
// // puts("");
|
||||
// }
|
||||
// // test mixColumns
|
||||
// printf("Testing mixColumns\n");
|
||||
// {
|
||||
// t_state state = { 0x01234567,
|
||||
// 0x89abcdef,
|
||||
// 0xdeadbeef,
|
||||
// 0x00112233 };
|
||||
|
||||
// t_state res_state = { 0xcd678923,
|
||||
// 0x45ef01ab,
|
||||
// 0x9e69ba6f,
|
||||
// 0x66334411 };
|
||||
// mixColumns(state);
|
||||
// // printf("0x%08x, 0x%08x, 0x%08x, 0x%08x\n", state[0], state[1], state[2], state[3]);
|
||||
// // printf("0x%08x, 0x%08x, 0x%08x, 0x%08x\n", res_state[0], res_state[1], res_state[2], res_state[3]);
|
||||
// for (int i = 0; i < 4; i++) {
|
||||
// if (state[i] != res_state[i]) { printf("Mismatch at state[%d]! 0x%08x\n", i, state[i]); test_failed = 1; }
|
||||
// }
|
||||
// }
|
||||
|
||||
// // test key expansion
|
||||
// printf("Testing expandKey\n");
|
||||
// {
|
||||
// uint8_t key_b[16] = { 0xef, 0xbe, 0xad, 0xde, 0xbe, 0xba, 0xfe, 0xca, 0x0D, 0xF0, 0xAD, 0xBA, 0x00, 0x11, 0x22, 0x33 };
|
||||
// uint32_t key_w[44] = { 0 /*, ...*/ };
|
||||
// uint32_t res_key_w[44] = {
|
||||
// 0xdeadbeef, 0xcafebabe, 0xbaadf00d, 0x33221100,
|
||||
// 0xbd6e2d6c, 0x779097d2, 0xcd3d67df, 0xfe1f76df,
|
||||
// 0x23d5ed56, 0x54457a84, 0x99781d5b, 0x67676b84,
|
||||
// 0x7c50682d, 0x281512a9, 0xb16d0ff2, 0xd60a6476,
|
||||
// 0x44a60f66, 0x6cb31dcf, 0xddde123d, 0x0bd4764b,
|
||||
// 0xf78d474e, 0x9b3e5a81, 0x46e048bc, 0x4d343ef7,
|
||||
// 0x9f6e5fdc, 0x0450055d, 0x42b04de1, 0x0f847316,
|
||||
// 0xd8180013, 0xdc48054e, 0x9ef848af, 0x917c3bb9,
|
||||
// 0x8e991071, 0x52d1153f, 0xcc295d90, 0x5d556629,
|
||||
// 0x2bd5ec59, 0x7904f966, 0xb52da4f6, 0xe878c2df,
|
||||
// 0xb54e504a, 0xcc4aa92c, 0x79670dda, 0x911fcf05,
|
||||
// };
|
||||
// expandKey(key_b, key_w);
|
||||
// for (int i = 0; i < 44; i++) {
|
||||
// // printf("0x%08x, ", key_w[i]);
|
||||
// // if (i % 4 == 3) printf("\n");
|
||||
// }
|
||||
|
||||
// for (int i = 0; i < 44; i++) {
|
||||
// if (key_w[i] != res_key_w[i]) {
|
||||
// printf("Mismatch at key_w[%d]! Comparison interrupted.\n", i); test_failed = 1;
|
||||
// break;
|
||||
// }
|
||||
// }
|
||||
// printf("Testing addRoundKey\n");
|
||||
// // test AddRoundKey (last round)
|
||||
// t_state state = { 0x01234567, 0x89abcdef, 0xdeadbeef, 0x00112233 };
|
||||
// t_state res_state = { 0xb46d152d, 0x45e164c3, 0xa7cab335, 0x910eed36 };
|
||||
// addRoundKey(state, key_w, 40);
|
||||
// printf("0x%08x, 0x%08x, 0x%08x, 0x%08x\n", state[0], state[1], state[2], state[3]);
|
||||
// for (int i = 0; i < 4; i++) {
|
||||
// if (state[i] != res_state[i]) { printf("Mismatch at state[%d]!\n", i); }
|
||||
// }
|
||||
|
||||
// }
|
||||
|
||||
// // test aes encryption
|
||||
// printf("Testing aes\n");
|
||||
// {
|
||||
// uint8_t key[16] = { 0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77, 0x88, 0x99, 0xaa, 0xbb, 0xcc, 0xdd, 0xee, 0xff };
|
||||
// uint8_t in[16] = { 0xab, 0xcd, 0xef, 0x01, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef, 0x01, 0x23, 0x45, 0x67, 0x89 };
|
||||
// uint8_t out[16] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
|
||||
// uint8_t res[16] = { 0xa3, 0x3a, 0xca, 0x68, 0x72, 0xa2, 0x27, 0x74, 0xbf, 0x99, 0xf3, 0x71, 0xaa, 0x99, 0xd2, 0x5a };
|
||||
|
||||
// // printf("Key: ");
|
||||
// // hexprint16(key);
|
||||
// // puts("");
|
||||
// // printf("In: ");
|
||||
// // hexprint16(in);
|
||||
// // puts("");
|
||||
|
||||
// uint32_t expKey[11 * 4];
|
||||
// expandKey(key, expKey);
|
||||
|
||||
// aes128(in, out, expKey);
|
||||
|
||||
// // printf("Out: ");
|
||||
// // hexprint16(out);
|
||||
// // puts("");
|
||||
|
||||
// for (int i = 0; i < 16; i++) {
|
||||
// if (out[i] != res[i]) { printf("Mismatch at out[%02d]! 0x%02x 0x%02x\n", i, out[i], res[i]); test_failed = 1; }
|
||||
// }
|
||||
// }
|
||||
// if (test_failed) {
|
||||
// printf("|*********** SOME TEST(S) FAILED ***********|\n");
|
||||
// printf("Please fix me!\n");
|
||||
// }
|
||||
// else {
|
||||
// printf("============== All tests OK! ===============\n");
|
||||
// }
|
||||
// return test_failed;
|
||||
// }
|
||||
|
|
@ -0,0 +1,186 @@
|
|||
#include <stdio.h>
|
||||
#include <stdint.h>
|
||||
|
||||
/* AES-128 simple implementation template and testing */
|
||||
|
||||
/*
|
||||
Author: Ondrej Hladuvka, hladuond@fit.cvut.cz
|
||||
Template: Jiri Bucek 2017
|
||||
AES specification:
|
||||
http://csrc.nist.gov/publications/fips/fips197/fips-197.pdf
|
||||
*/
|
||||
|
||||
namespace aes128_5a {
|
||||
|
||||
/* AES Constants */
|
||||
|
||||
// forward sbox
|
||||
const uint8_t SBOX[256] = {
|
||||
// 0 1 2 3 4 5 6 7 8 9 A B C D E F
|
||||
0x63, 0x7c, 0x77, 0x7b, 0xf2, 0x6b, 0x6f, 0xc5, 0x30, 0x01, 0x67, 0x2b, 0xfe, 0xd7, 0xab, 0x76, // 0
|
||||
0xca, 0x82, 0xc9, 0x7d, 0xfa, 0x59, 0x47, 0xf0, 0xad, 0xd4, 0xa2, 0xaf, 0x9c, 0xa4, 0x72, 0xc0, // 1
|
||||
0xb7, 0xfd, 0x93, 0x26, 0x36, 0x3f, 0xf7, 0xcc, 0x34, 0xa5, 0xe5, 0xf1, 0x71, 0xd8, 0x31, 0x15, // 2
|
||||
0x04, 0xc7, 0x23, 0xc3, 0x18, 0x96, 0x05, 0x9a, 0x07, 0x12, 0x80, 0xe2, 0xeb, 0x27, 0xb2, 0x75, // 3
|
||||
0x09, 0x83, 0x2c, 0x1a, 0x1b, 0x6e, 0x5a, 0xa0, 0x52, 0x3b, 0xd6, 0xb3, 0x29, 0xe3, 0x2f, 0x84, // 4
|
||||
0x53, 0xd1, 0x00, 0xed, 0x20, 0xfc, 0xb1, 0x5b, 0x6a, 0xcb, 0xbe, 0x39, 0x4a, 0x4c, 0x58, 0xcf, // 5
|
||||
0xd0, 0xef, 0xaa, 0xfb, 0x43, 0x4d, 0x33, 0x85, 0x45, 0xf9, 0x02, 0x7f, 0x50, 0x3c, 0x9f, 0xa8, // 6
|
||||
0x51, 0xa3, 0x40, 0x8f, 0x92, 0x9d, 0x38, 0xf5, 0xbc, 0xb6, 0xda, 0x21, 0x10, 0xff, 0xf3, 0xd2, // 7
|
||||
0xcd, 0x0c, 0x13, 0xec, 0x5f, 0x97, 0x44, 0x17, 0xc4, 0xa7, 0x7e, 0x3d, 0x64, 0x5d, 0x19, 0x73, // 8
|
||||
0x60, 0x81, 0x4f, 0xdc, 0x22, 0x2a, 0x90, 0x88, 0x46, 0xee, 0xb8, 0x14, 0xde, 0x5e, 0x0b, 0xdb, // 9
|
||||
0xe0, 0x32, 0x3a, 0x0a, 0x49, 0x06, 0x24, 0x5c, 0xc2, 0xd3, 0xac, 0x62, 0x91, 0x95, 0xe4, 0x79, // A
|
||||
0xe7, 0xc8, 0x37, 0x6d, 0x8d, 0xd5, 0x4e, 0xa9, 0x6c, 0x56, 0xf4, 0xea, 0x65, 0x7a, 0xae, 0x08, // B
|
||||
0xba, 0x78, 0x25, 0x2e, 0x1c, 0xa6, 0xb4, 0xc6, 0xe8, 0xdd, 0x74, 0x1f, 0x4b, 0xbd, 0x8b, 0x8a, // C
|
||||
0x70, 0x3e, 0xb5, 0x66, 0x48, 0x03, 0xf6, 0x0e, 0x61, 0x35, 0x57, 0xb9, 0x86, 0xc1, 0x1d, 0x9e, // D
|
||||
0xe1, 0xf8, 0x98, 0x11, 0x69, 0xd9, 0x8e, 0x94, 0x9b, 0x1e, 0x87, 0xe9, 0xce, 0x55, 0x28, 0xdf, // E
|
||||
0x8c, 0xa1, 0x89, 0x0d, 0xbf, 0xe6, 0x42, 0x68, 0x41, 0x99, 0x2d, 0x0f, 0xb0, 0x54, 0xbb, 0x16 // F
|
||||
};
|
||||
|
||||
const uint8_t rCon[12] = {
|
||||
0x8d, 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36,
|
||||
};
|
||||
|
||||
/* AES state type */
|
||||
typedef uint32_t t_state[4];
|
||||
|
||||
#define word(a0, a1, a2, a3) ((uint32_t)(a0) | ((uint32_t)(a1) << 8) | ((uint32_t)(a2) << 16) | ((uint32_t)(a3) << 24))
|
||||
|
||||
uint8_t wbyte(uint32_t w, int pos) {
|
||||
return (w >> (pos * 8)) & 0xff;
|
||||
}
|
||||
|
||||
// **************** AES functions ****************
|
||||
uint32_t subWord(uint32_t w) {
|
||||
return word(SBOX[wbyte(w, 0)], SBOX[wbyte(w, 1)], SBOX[wbyte(w, 2)], SBOX[wbyte(w, 3)]);
|
||||
}
|
||||
|
||||
void subBytes(t_state s) {
|
||||
unsigned char* p = reinterpret_cast<unsigned char*>(s);
|
||||
for (int i = 0; i < 16; ++i)
|
||||
p[i] = SBOX[p[i]];
|
||||
}
|
||||
|
||||
void shiftRows(t_state s) {
|
||||
uint32_t tmp[4];
|
||||
|
||||
tmp[0] = s[0] & 0x0000FF00;
|
||||
tmp[1] = s[1] & 0x0000FF00;
|
||||
tmp[2] = s[2] & 0x0000FF00;
|
||||
tmp[3] = s[3] & 0x0000FF00;
|
||||
|
||||
s[0] = (s[0] & 0xFFFF00FF) | tmp[1];
|
||||
s[1] = (s[1] & 0xFFFF00FF) | tmp[2];
|
||||
s[2] = (s[2] & 0xFFFF00FF) | tmp[3];
|
||||
s[3] = (s[3] & 0xFFFF00FF) | tmp[0];
|
||||
|
||||
tmp[0] = s[0] & 0x00FF0000;
|
||||
tmp[1] = s[1] & 0x00FF0000;
|
||||
tmp[2] = s[2] & 0x00FF0000;
|
||||
tmp[3] = s[3] & 0x00FF0000;
|
||||
|
||||
s[0] = (s[0] & 0xFF00FFFF) | tmp[2];
|
||||
s[1] = (s[1] & 0xFF00FFFF) | tmp[3];
|
||||
s[2] = (s[2] & 0xFF00FFFF) | tmp[0];
|
||||
s[3] = (s[3] & 0xFF00FFFF) | tmp[1];
|
||||
|
||||
tmp[0] = s[0] & 0xFF000000;
|
||||
tmp[1] = s[1] & 0xFF000000;
|
||||
tmp[2] = s[2] & 0xFF000000;
|
||||
tmp[3] = s[3] & 0xFF000000;
|
||||
|
||||
s[0] = (s[0] & 0x00FFFFFF) | tmp[3];
|
||||
s[1] = (s[1] & 0x00FFFFFF) | tmp[0];
|
||||
s[2] = (s[2] & 0x00FFFFFF) | tmp[1];
|
||||
s[3] = (s[3] & 0x00FFFFFF) | tmp[2];
|
||||
}
|
||||
|
||||
uint8_t xtime(uint8_t c) {
|
||||
uint8_t m = ((c & 0x80) >> 7) * 0x1B;
|
||||
return (c << 1) ^ m;
|
||||
}
|
||||
|
||||
void mixColumns(t_state s) {
|
||||
for (int i = 0; i < 4; i++) {
|
||||
uint8_t a0 = wbyte(s[i], 0);
|
||||
uint8_t a1 = wbyte(s[i], 1);
|
||||
uint8_t a2 = wbyte(s[i], 2);
|
||||
uint8_t a3 = wbyte(s[i], 3);
|
||||
|
||||
uint8_t r0 = xtime(a0) ^ xtime(a1) ^ a1 ^ a2 ^ a3;
|
||||
uint8_t r1 = xtime(a1) ^ xtime(a2) ^ a2 ^ a3 ^ a0;
|
||||
uint8_t r2 = xtime(a2) ^ xtime(a3) ^ a3 ^ a0 ^ a1;
|
||||
uint8_t r3 = xtime(a3) ^ xtime(a0) ^ a0 ^ a1 ^ a2;
|
||||
|
||||
s[i] = word(r0, r1, r2, r3);
|
||||
}
|
||||
}
|
||||
|
||||
/*
|
||||
* Key expansion from 128bits (4*32b)
|
||||
* to 11 round keys (11*4*32b)
|
||||
* each round key is 4*32b
|
||||
*/
|
||||
void expandKey(uint8_t k[16], uint32_t ek[44]) {
|
||||
for (int i = 0; i < 4; i++) {
|
||||
ek[i] = word(k[4*i], k[4*i + 1], k[4*i + 2], k[4*i + 3]);
|
||||
}
|
||||
|
||||
for (int i = 4; i < 44; i++) {
|
||||
uint32_t temp = ek[i - 1];
|
||||
if (i % 4 == 0) {
|
||||
// RotWord, SubWord, and XOR with Rcon
|
||||
temp = subWord((temp >> 8) | (temp << 24)) ^ rCon[i / 4];
|
||||
}
|
||||
ek[i] = ek[i - 4] ^ temp;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
/* Adding expanded round key (prepared before) */
|
||||
void addRoundKey(t_state s, uint32_t ek[], short index) {
|
||||
for (int i = 0; i < 4; i++) {
|
||||
s[i] ^= ek[index + i];
|
||||
}
|
||||
}
|
||||
|
||||
void aes128_5a(uint8_t *in, uint8_t *out, uint32_t * expKey) {
|
||||
t_state state;
|
||||
|
||||
state[0] = word(in[0], in[1], in[2], in[3]);
|
||||
state[1] = word(in[4], in[5], in[6], in[7]);
|
||||
state[2] = word(in[8], in[9], in[10], in[11]);
|
||||
state[3] = word(in[12], in[13], in[14], in[15]);
|
||||
|
||||
addRoundKey(state, expKey, 0);
|
||||
for (int round = 0; round < 9; ++round) {
|
||||
subBytes(state);
|
||||
shiftRows(state);
|
||||
mixColumns(state);
|
||||
addRoundKey(state, expKey, round * 4 + 4);
|
||||
}
|
||||
|
||||
subBytes(state);
|
||||
shiftRows(state);
|
||||
addRoundKey(state, expKey, 10 * 4);
|
||||
|
||||
out[0] = wbyte(state[0], 0);
|
||||
out[1] = wbyte(state[0], 1);
|
||||
out[2] = wbyte(state[0], 2);
|
||||
out[3] = wbyte(state[0], 3);
|
||||
|
||||
out[4] = wbyte(state[1], 0);
|
||||
out[5] = wbyte(state[1], 1);
|
||||
out[6] = wbyte(state[1], 2);
|
||||
out[7] = wbyte(state[1], 3);
|
||||
|
||||
out[8] = wbyte(state[2], 0);
|
||||
out[9] = wbyte(state[2], 1);
|
||||
out[10] = wbyte(state[2], 2);
|
||||
out[11] = wbyte(state[2], 3);
|
||||
|
||||
out[12] = wbyte(state[3], 0);
|
||||
out[13] = wbyte(state[3], 1);
|
||||
out[14] = wbyte(state[3], 2);
|
||||
out[15] = wbyte(state[3], 3);
|
||||
}
|
||||
|
||||
}
|
||||
|
|
@ -4,51 +4,215 @@
|
|||
#include <openssl/rand.h>
|
||||
#include <cstring>
|
||||
#include <chrono>
|
||||
#include "aes.cpp"
|
||||
#include <immintrin.h>
|
||||
#include <memory>
|
||||
#include <type_traits>
|
||||
#include "aes_4.cpp"
|
||||
#include "aes_5a.cpp"
|
||||
|
||||
// AES constants
|
||||
constexpr size_t blockSize = 16;
|
||||
constexpr size_t keySize = 16;
|
||||
|
||||
// Test constants
|
||||
constexpr size_t numTests = 1'000'000;
|
||||
constexpr size_t payloadSize = numTests * blockSize;
|
||||
|
||||
using TestTimeUnit = std::milli;
|
||||
using CycleTimeUnit = std::nano;
|
||||
|
||||
void xor_into_128bit_u(uint8_t *a, uint8_t *b) {
|
||||
__m128i vec_a = _mm_loadu_si128((__m128i*)a);
|
||||
__m128i vec_b = _mm_loadu_si128((__m128i*)b);
|
||||
|
||||
__m128i vec_result = _mm_xor_si128(vec_a, vec_b);
|
||||
|
||||
_mm_storeu_si128((__m128i*)a, vec_result);
|
||||
}
|
||||
|
||||
// aligned version
|
||||
void xor_128bit(__m128i *a, __m128i *b, __m128i *c) {
|
||||
__m128i vec_a = _mm_load_si128(a);
|
||||
__m128i vec_b = _mm_load_si128(b);
|
||||
|
||||
__m128i vec_result = _mm_xor_si128(vec_a, vec_b);
|
||||
|
||||
_mm_store_si128(c, vec_result);
|
||||
}
|
||||
|
||||
void mov_128bit(__m128i *a, __m128i *b) {
|
||||
__m128i tmp = _mm_load_si128(a);
|
||||
_mm_store_si128(b, tmp);
|
||||
}
|
||||
|
||||
void test(void (*aes)(uint8_t *in, uint8_t *out, uint32_t *expKey), uint8_t *in, uint8_t *refOut,
|
||||
uint32_t *expandedKey, uint8_t *iv,
|
||||
const std::string& name) {
|
||||
std::cout << "\n\ntesting: " << name << '\n';
|
||||
|
||||
uint8_t* tmpBlock(static_cast<uint8_t*>(std::aligned_alloc(blockSize, blockSize)));
|
||||
uint8_t* outBuf(static_cast<uint8_t*>(std::aligned_alloc(blockSize, payloadSize)));
|
||||
mov_128bit(reinterpret_cast<__m128i*>(iv), reinterpret_cast<__m128i*>(tmpBlock));
|
||||
|
||||
uint64_t cycles = __rdtsc();
|
||||
auto start = std::chrono::high_resolution_clock::now();
|
||||
for (size_t t = 0; t < numTests; ++t) {
|
||||
aes(tmpBlock, tmpBlock, expandedKey);
|
||||
xor_128bit(reinterpret_cast<__m128i*>(tmpBlock),
|
||||
reinterpret_cast<__m128i*>(in + blockSize * t),
|
||||
reinterpret_cast<__m128i*>(outBuf + blockSize * t));
|
||||
}
|
||||
cycles = __rdtsc() - cycles;
|
||||
auto end = std::chrono::high_resolution_clock::now();
|
||||
|
||||
if (std::memcmp(outBuf, refOut, payloadSize)) std::cout << "test failed!\n";
|
||||
else std::cout << "test passed\n";
|
||||
|
||||
std::chrono::duration<double, CycleTimeUnit> time = end - start;
|
||||
double timeAVG = time.count() / numTests;
|
||||
|
||||
std::cout << "time :" << time.count()/std::ratio_divide<CycleTimeUnit, TestTimeUnit>::den << "ms\navg time: " << timeAVG << "ns\navg cpu cycles: " << cycles/numTests << std::endl;
|
||||
std::free(tmpBlock);
|
||||
std::free(outBuf);
|
||||
}
|
||||
|
||||
|
||||
int main() {
|
||||
const int numTests = 1000000;
|
||||
const int blockSize = 16;
|
||||
const int keySize = 16;
|
||||
uint8_t key[keySize];
|
||||
uint8_t opensslOutput[blockSize];
|
||||
uint8_t myOutput[blockSize];
|
||||
uint8_t input[blockSize];
|
||||
|
||||
uint8_t iv[blockSize];
|
||||
uint32_t expandedKey[44];
|
||||
|
||||
std::chrono::duration<double, std::micro> opensslTime(0);
|
||||
std::chrono::duration<double, std::micro> myTime(0);
|
||||
|
||||
AES_KEY opensslKey;
|
||||
|
||||
for (int test = 0; test < numTests; ++test) {
|
||||
// Generate random key and input data using OpenSSL's random generator
|
||||
if (!RAND_bytes(key, keySize) || !RAND_bytes(input, blockSize)) {
|
||||
std::cerr << "Failed to generate random data using OpenSSL." << std::endl;
|
||||
return 1;
|
||||
}
|
||||
uint8_t* input(static_cast<uint8_t*>(std::aligned_alloc(blockSize, payloadSize)));
|
||||
uint8_t* opensslOutput(static_cast<uint8_t*>(std::aligned_alloc(blockSize, payloadSize)));
|
||||
|
||||
auto start = std::chrono::high_resolution_clock::now();
|
||||
RAND_bytes(key, keySize);
|
||||
RAND_bytes(iv, blockSize);
|
||||
RAND_bytes(input, payloadSize);
|
||||
|
||||
// OpenSSL
|
||||
std::cout << "testing: OpenSSL\n";
|
||||
#pragma GCC diagnostic push
|
||||
#pragma GCC diagnostic ignored "-Wdeprecated-declarations"
|
||||
AES_set_encrypt_key(key, 128, &opensslKey);
|
||||
AES_encrypt(input, opensslOutput, &opensslKey);
|
||||
auto end = std::chrono::high_resolution_clock::now();
|
||||
opensslTime += end - start;
|
||||
|
||||
start = std::chrono::high_resolution_clock::now();
|
||||
expandKey(key, expandedKey);
|
||||
aes128(input, myOutput, expandedKey);
|
||||
end = std::chrono::high_resolution_clock::now();
|
||||
myTime += end - start;
|
||||
if (std::memcmp(opensslOutput, myOutput, blockSize))
|
||||
std::cerr << "Mismatch at test " << test + 1 << "!" << std::endl;
|
||||
|
||||
|
||||
uint8_t* tmpBlock(static_cast<uint8_t*>(std::aligned_alloc(blockSize, blockSize)));
|
||||
mov_128bit(reinterpret_cast<__m128i*>(iv), reinterpret_cast<__m128i*>(tmpBlock));
|
||||
auto start = std::chrono::high_resolution_clock::now();
|
||||
size_t opensslCycles = __rdtsc();
|
||||
for (int test = 0; test < numTests; ++test) {
|
||||
AES_encrypt(tmpBlock, tmpBlock, &opensslKey);
|
||||
xor_128bit(reinterpret_cast<__m128i*>(tmpBlock),
|
||||
reinterpret_cast<__m128i*>(input + blockSize * test),
|
||||
reinterpret_cast<__m128i*>(opensslOutput + blockSize * test));
|
||||
}
|
||||
double avgOpenSSLTime = opensslTime.count() / numTests;
|
||||
double avgCustomTime = myTime.count() / numTests;
|
||||
opensslCycles = __rdtsc() - opensslCycles;
|
||||
auto end = std::chrono::high_resolution_clock::now();
|
||||
std::chrono::duration<double, std::nano> opensslTime = end - start;
|
||||
double timeAVG = opensslTime.count() / numTests;
|
||||
std::cout << "avg time: " << timeAVG << "ns\navg cycles: " << opensslCycles/numTests << std::endl;
|
||||
std::free(tmpBlock);
|
||||
#pragma GCC diagnostic pop
|
||||
|
||||
std::cout << "avg openssl time: " << avgOpenSSLTime << "us" << std::endl;
|
||||
std::cout << "avg my time: " << avgCustomTime << "us" << std::endl;
|
||||
expandKey(key, expandedKey);
|
||||
|
||||
test(aes128_4, input, opensslOutput, expandedKey, iv, "My original implementation");
|
||||
test(aes128_5a::aes128_5a, input, opensslOutput, expandedKey, iv, "My original implementation");
|
||||
// test(aes128, input, opensslOutput, expandedKey, iv, "My original implementation");
|
||||
|
||||
std::free(input);
|
||||
std::free(opensslOutput);
|
||||
return 0;
|
||||
}
|
||||
|
||||
// int main() {
|
||||
|
||||
// uint8_t key[keySize];
|
||||
|
||||
// uint8_t* opensslOutput = new uint8_t[payloadSize];
|
||||
// uint8_t* myOutput = new uint8_t[payloadSize];
|
||||
// uint8_t* myOptimOutput = new uint8_t[payloadSize];
|
||||
|
||||
// uint8_t* opensslInput = new uint8_t[payloadSize];
|
||||
// uint8_t* myInput = new uint8_t[payloadSize];
|
||||
// uint8_t* myOptimInput = new uint8_t[payloadSize];
|
||||
|
||||
// std::unique_ptr<uint8_t> iv(static_cast<uint8_t*>(std::aligned_alloc(blockSize, blockSize)));
|
||||
// uint32_t expandedKey[44];
|
||||
|
||||
// std::chrono::duration<double, std::nano> opensslTime(0);
|
||||
// std::chrono::duration<double, std::nano> myTime(0);
|
||||
// std::chrono::duration<double, std::nano> myOptimTime(0);
|
||||
|
||||
// uint64_t opensslCycles;
|
||||
// uint64_t myCycles;
|
||||
// uint64_t myOptimCycles;
|
||||
|
||||
// AES_KEY opensslKey;
|
||||
|
||||
// RAND_bytes(key, keySize);
|
||||
// RAND_bytes(opensslInput, payloadSize);
|
||||
|
||||
// RAND_bytes(iv.get(), blockSize);
|
||||
// xor_into_128bit_u(opensslInput, iv.get());
|
||||
// memcpy(myInput, opensslInput, payloadSize);
|
||||
// memcpy(myOptimInput, opensslInput, payloadSize);
|
||||
|
||||
// expandKey(key, expandedKey);
|
||||
// #pragma GCC diagnostic push
|
||||
// #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
|
||||
// AES_set_encrypt_key(key, 128, &opensslKey);
|
||||
|
||||
// // OPENSSL
|
||||
// auto start = std::chrono::high_resolution_clock::now();
|
||||
// opensslCycles = __rdtsc();
|
||||
// for (int test = 0; test < numTests; ++test) {
|
||||
// AES_encrypt(opensslInput + blockSize * test, opensslOutput + blockSize * test, &opensslKey);
|
||||
// xor_into_128bit_u(opensslInput + blockSize * test, opensslOutput + blockSize * test);
|
||||
// }
|
||||
// #pragma GCC diagnostic pop
|
||||
// opensslCycles = __rdtsc() - opensslCycles;
|
||||
// auto end = std::chrono::high_resolution_clock::now();
|
||||
// opensslTime += end - start;
|
||||
|
||||
// // My 4
|
||||
// start = std::chrono::high_resolution_clock::now();
|
||||
// myCycles = __rdtsc();
|
||||
// for (int test = 0; test < numTests; ++test) {
|
||||
// aes128(myInput + blockSize * test, myOutput + blockSize * test, expandedKey);
|
||||
// xor_into_128bit_u(myInput + blockSize * test, myOutput + blockSize * test);
|
||||
// }
|
||||
// myCycles = __rdtsc() - myCycles;
|
||||
// end = std::chrono::high_resolution_clock::now();
|
||||
// myTime += end - start;
|
||||
|
||||
// // My 5a
|
||||
// start = std::chrono::high_resolution_clock::now();
|
||||
// myOptimCycles = __rdtsc();
|
||||
// for (int test = 0; test < numTests; ++test) {
|
||||
// aes128(myOptimInput + blockSize * test, myOptimOutput + blockSize * test, expandedKey);
|
||||
// xor_into_128bit_u(myOptimInput + blockSize * test, myOptimOutput + blockSize * test);
|
||||
// }
|
||||
// myOptimCycles = __rdtsc() - myOptimCycles;
|
||||
// end = std::chrono::high_resolution_clock::now();
|
||||
// myOptimTime += end - start;
|
||||
|
||||
// // Verify
|
||||
// if (std::memcmp(myOptimOutput, opensslOutput, payloadSize)) {
|
||||
// std::cout << "Output differs\n";
|
||||
// for (int i = 0; i < 16; ++i)
|
||||
// std::cout << (int)myOutput[i] << "!=" << (int)opensslOutput[i] << '\n';
|
||||
// } else {
|
||||
// std::cout << "Output same\n";
|
||||
// }
|
||||
|
||||
// // Print perf stats
|
||||
// double opensslTimeAVG = opensslTime.count() / numTests;
|
||||
// double myTimeAVG = myTime.count() / numTests;
|
||||
// double myOptimTimeAVG = myOptimTime.count() / numTests;
|
||||
|
||||
// std::cout << "avg openssl time: " << opensslTimeAVG << "ns, cycles: " << opensslCycles/numTests << std::endl;
|
||||
// std::cout << "avg my time: " << myTimeAVG << "ns, cycles: " << myCycles/numTests << std::endl;
|
||||
// std::cout << "avg my optim time: " << myOptimTimeAVG << "ns, cycles: " << myOptimCycles/numTests << std::endl;
|
||||
|
||||
// return opensslOutput[0] ^ myOutput[0] ^ myOptimOutput[0];
|
||||
// }
|
||||
Loading…
Reference in New Issue