-
Notifications
You must be signed in to change notification settings - Fork 5
/
aes128k128d.c
454 lines (396 loc) · 14.3 KB
/
aes128k128d.c
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
#include <stdlib.h>
#include <stdio.h>
#include <wmmintrin.h>
extern int aesni_supported;
#define DEBUG 0
/*****************************/
/******** SBOX Table *********/
/*****************************/
unsigned char sbox_table[256] =
{
0x63, 0x7c, 0x77, 0x7b, 0xf2, 0x6b, 0x6f, 0xc5,
0x30, 0x01, 0x67, 0x2b, 0xfe, 0xd7, 0xab, 0x76,
0xca, 0x82, 0xc9, 0x7d, 0xfa, 0x59, 0x47, 0xf0,
0xad, 0xd4, 0xa2, 0xaf, 0x9c, 0xa4, 0x72, 0xc0,
0xb7, 0xfd, 0x93, 0x26, 0x36, 0x3f, 0xf7, 0xcc,
0x34, 0xa5, 0xe5, 0xf1, 0x71, 0xd8, 0x31, 0x15,
0x04, 0xc7, 0x23, 0xc3, 0x18, 0x96, 0x05, 0x9a,
0x07, 0x12, 0x80, 0xe2, 0xeb, 0x27, 0xb2, 0x75,
0x09, 0x83, 0x2c, 0x1a, 0x1b, 0x6e, 0x5a, 0xa0,
0x52, 0x3b, 0xd6, 0xb3, 0x29, 0xe3, 0x2f, 0x84,
0x53, 0xd1, 0x00, 0xed, 0x20, 0xfc, 0xb1, 0x5b,
0x6a, 0xcb, 0xbe, 0x39, 0x4a, 0x4c, 0x58, 0xcf,
0xd0, 0xef, 0xaa, 0xfb, 0x43, 0x4d, 0x33, 0x85,
0x45, 0xf9, 0x02, 0x7f, 0x50, 0x3c, 0x9f, 0xa8,
0x51, 0xa3, 0x40, 0x8f, 0x92, 0x9d, 0x38, 0xf5,
0xbc, 0xb6, 0xda, 0x21, 0x10, 0xff, 0xf3, 0xd2,
0xcd, 0x0c, 0x13, 0xec, 0x5f, 0x97, 0x44, 0x17,
0xc4, 0xa7, 0x7e, 0x3d, 0x64, 0x5d, 0x19, 0x73,
0x60, 0x81, 0x4f, 0xdc, 0x22, 0x2a, 0x90, 0x88,
0x46, 0xee, 0xb8, 0x14, 0xde, 0x5e, 0x0b, 0xdb,
0xe0, 0x32, 0x3a, 0x0a, 0x49, 0x06, 0x24, 0x5c,
0xc2, 0xd3, 0xac, 0x62, 0x91, 0x95, 0xe4, 0x79,
0xe7, 0xc8, 0x37, 0x6d, 0x8d, 0xd5, 0x4e, 0xa9,
0x6c, 0x56, 0xf4, 0xea, 0x65, 0x7a, 0xae, 0x08,
0xba, 0x78, 0x25, 0x2e, 0x1c, 0xa6, 0xb4, 0xc6,
0xe8, 0xdd, 0x74, 0x1f, 0x4b, 0xbd, 0x8b, 0x8a,
0x70, 0x3e, 0xb5, 0x66, 0x48, 0x03, 0xf6, 0x0e,
0x61, 0x35, 0x57, 0xb9, 0x86, 0xc1, 0x1d, 0x9e,
0xe1, 0xf8, 0x98, 0x11, 0x69, 0xd9, 0x8e, 0x94,
0x9b, 0x1e, 0x87, 0xe9, 0xce, 0x55, 0x28, 0xdf,
0x8c, 0xa1, 0x89, 0x0d, 0xbf, 0xe6, 0x42, 0x68,
0x41, 0x99, 0x2d, 0x0f, 0xb0, 0x54, 0xbb, 0x16
};
/*****************************/
/**** Function Prototypes ****/
/*****************************/
void xor_128(unsigned char *a, unsigned char *b, unsigned char *out);
void xor_32(unsigned char *a, unsigned char *b, unsigned char *out);
unsigned char sbox(unsigned char a);
void next_key(unsigned char *key, int round);
void byte_sub(unsigned char *in, unsigned char *out);
void shift_row(unsigned char *in, unsigned char *out);
void mix_column(unsigned char *in, unsigned char *out);
void add_round_key( unsigned char *shiftrow_in,
unsigned char *mcol_in,
unsigned char *block_in,
int round,
unsigned char *out);
void aesse128k128d(unsigned char *key, unsigned char *data, unsigned char *ciphertext);
void aesni128k128d(unsigned char *key, const unsigned char *data, const unsigned char *ciphertext);
void aes128k128d(unsigned char *key, unsigned char *data, unsigned char *ciphertext);
/****************************************/
/* aes128k128d() */
/* Performs a 128 bit AES encrypt with */
/* 128 bit data. */
/****************************************/
void xor_128(unsigned char *a, unsigned char *b, unsigned char *out)
{
int i;
for (i=0;i<16; i++)
{
out[i] = a[i] ^ b[i];
}
}
void xor_32(unsigned char *a, unsigned char *b, unsigned char *out)
{
int i;
for (i=0;i<4; i++)
{
out[i] = a[i] ^ b[i];
}
}
unsigned char sbox(unsigned char a)
{
return sbox_table[(int)a];
}
void next_key(unsigned char *key, int round)
{
unsigned char rcon;
unsigned char sbox_key[4];
unsigned char rcon_table[12] =
{
0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80,
0x1b, 0x36, 0x36, 0x36
};
sbox_key[0] = sbox(key[13]);
sbox_key[1] = sbox(key[14]);
sbox_key[2] = sbox(key[15]);
sbox_key[3] = sbox(key[12]);
rcon = rcon_table[round];
if (DEBUG >1) printf("rcon : %02X\n",rcon);
xor_32(&key[0], sbox_key, &key[0]);
key[0] = key[0] ^ rcon;
xor_32(&key[4], &key[0], &key[4]);
xor_32(&key[8], &key[4], &key[8]);
xor_32(&key[12], &key[8], &key[12]);
}
void byte_sub(unsigned char *in, unsigned char *out)
{
int i;
for (i=0; i< 16; i++)
{
out[i] = sbox(in[i]);
}
}
void shift_row(unsigned char *in, unsigned char *out)
{
out[0] = in[0];
out[1] = in[5];
out[2] = in[10];
out[3] = in[15];
out[4] = in[4];
out[5] = in[9];
out[6] = in[14];
out[7] = in[3];
out[8] = in[8];
out[9] = in[13];
out[10] = in[2];
out[11] = in[7];
out[12] = in[12];
out[13] = in[1];
out[14] = in[6];
out[15] = in[11];
}
void print32(char *astr, unsigned char *bits)
{
unsigned int data;
data = 0;
data = (unsigned int)bits[3];
data = (data << 8) + (unsigned int)bits[2];
data = (data << 8) + (unsigned int)bits[1];
data = (data << 8) + (unsigned int)bits[0];
if (DEBUG > 0)
{
printf("%s : %08X\n",astr,data);
}
}
void mix_column(unsigned char *in, unsigned char *out)
{
int i;
unsigned char add1b[4];
unsigned char add1bf7[4];
unsigned char rotl[4];
unsigned char swap_halfs[4];
unsigned char andf7[4];
unsigned char rotr[4];
unsigned char temp[4];
unsigned char tempb[4];
if (DEBUG > 1) print32("in",in);
for (i=0 ; i<4; i++)
{
if ((in[i] & 0x80)== 0x80)
add1b[i] = 0x1b;
else
add1b[i] = 0x00;
}
if (DEBUG > 1) print32("add1b",add1b);
swap_halfs[0] = in[2]; /* Swap halfs */
swap_halfs[1] = in[3];
swap_halfs[2] = in[0];
swap_halfs[3] = in[1];
if (DEBUG > 1) print32("swap_halfs",swap_halfs);
rotl[0] = in[3]; /* Rotate left 8 bits */
rotl[1] = in[0];
rotl[2] = in[1];
rotl[3] = in[2];
if (DEBUG > 1) print32("rotl",rotl);
andf7[0] = in[0] & 0x7f;
andf7[1] = in[1] & 0x7f;
andf7[2] = in[2] & 0x7f;
andf7[3] = in[3] & 0x7f;
if (DEBUG > 1) print32("andf7",andf7);
for (i = 3; i>0; i--) /* logical shift left 1 bit */
{
andf7[i] = andf7[i] << 1;
if ((andf7[i-1] & 0x80) == 0x80)
{
andf7[i] = (andf7[i] | 0x01);
}
}
andf7[0] = andf7[0] << 1;
andf7[0] = andf7[0] & 0xfe;
if (DEBUG > 1) print32("lsl",andf7);
xor_32(add1b, andf7, add1bf7);
if (DEBUG > 1) print32("add1bf7", add1bf7);
xor_32(in, add1bf7, rotr);
if (DEBUG > 1) print32("pre-rotr", rotr);
temp[0] = rotr[0]; /* Rotate right 8 bits */
rotr[0] = rotr[1];
rotr[1] = rotr[2];
rotr[2] = rotr[3];
rotr[3] = temp[0];
if (DEBUG > 1) print32("rotr", rotr);
xor_32(add1bf7, rotr, temp);
xor_32(swap_halfs, rotl,tempb);
xor_32(temp, tempb, out);
}
void print_round(int round)
{
if (DEBUG > 0) printf("ROUND %02X\n",round);
}
void print_rk(unsigned char *data)
{
int i;
if (DEBUG > 0) printf(" RK:");
if (DEBUG > 0) for(i=0;i<16;i++) printf("%02X",data[i]);
if (DEBUG > 0) printf("\n");
}
void print_ct(unsigned char *data)
{
int i;
if (DEBUG > 0) printf(" CT:");
if (DEBUG > 0) for(i=0;i<16;i++) printf("%02X",data[i]);
if (DEBUG > 0) printf("\n");
}
void print_bs(unsigned char *data)
{
int i;
if (DEBUG > 0) printf(" BS:");
if (DEBUG > 0) for(i=0;i<16;i++) printf("%02X",data[i]);
if (DEBUG > 0) printf("\n");
}
void print_sr(unsigned char *data)
{
int i;
if (DEBUG > 0) printf(" SR:");
if (DEBUG > 0) for(i=0;i<16;i++) printf("%02X",data[i]);
if (DEBUG > 0) printf("\n");
}
void print_mc(unsigned char *data)
{
int i;
if (DEBUG > 0) printf(" MC:");
if (DEBUG > 0) for(i=0;i<16;i++) printf("%02X",data[i]);
if (DEBUG > 0) printf("\n");
}
void print_ark(unsigned char *data)
{
int i;
if (DEBUG > 0) printf(" ARK:");
if (DEBUG > 0) for(i=0;i<16;i++) printf("%02X",data[i]);
if (DEBUG > 0) printf("\n");
}
void aessw128k128d(unsigned char *key, unsigned char *data, unsigned char *ciphertext)
{
int round;
int i;
unsigned char intermediatea[16];
unsigned char intermediateb[16];
unsigned char round_key[16];
for(i=0; i<16; i++) round_key[i] = key[i];
for (round = 0; round < 11; round++)
{
if (round == 0)
{
print_round(round);
xor_128(round_key, data, ciphertext);
print_ark(ciphertext);
next_key(round_key, round);
print_rk(round_key);
}
else if (round == 10)
{
print_round(round);
byte_sub(ciphertext, intermediatea);
print_bs(intermediatea);
shift_row(intermediatea, intermediateb);
print_sr(intermediateb);
xor_128(intermediateb, round_key, ciphertext);
print_ark(ciphertext);
}
else /* 1 - 9 */
{
print_round(round);
byte_sub(ciphertext, intermediatea);
print_bs(intermediatea);
shift_row(intermediatea, intermediateb);
print_sr(intermediateb);
mix_column(&intermediateb[0], &intermediatea[0]);
mix_column(&intermediateb[4], &intermediatea[4]);
mix_column(&intermediateb[8], &intermediatea[8]);
mix_column(&intermediateb[12], &intermediatea[12]);
print_mc(intermediatea);
xor_128(intermediatea, round_key, ciphertext);
print_ark(ciphertext);
next_key(round_key, round);
print_rk(round_key);
}
}
}
/* AESNI version using intrinsics library */
__m128i aes128_keyexpand(__m128i key, __m128i keygened)
{
key = _mm_xor_si128(key, _mm_slli_si128(key, 4));
key = _mm_xor_si128(key, _mm_slli_si128(key, 4));
key = _mm_xor_si128(key, _mm_slli_si128(key, 4));
keygened = _mm_shuffle_epi32(keygened, _MM_SHUFFLE(3,3,3,3));
return _mm_xor_si128(key, keygened);
}
#define KEYEXP(K, I) aes128_keyexpand(K, _mm_aeskeygenassist_si128(K, I))
void aesni128k128d(unsigned char *key, const unsigned char *plaintext, const unsigned char *ciphertext)
{
__m128i rk[11];
__m128i m;
/* 128 bit Key Expansion */
rk[0] = _mm_loadu_si128((__m128i*) key);
rk[1] = KEYEXP(rk[0], 0x01);
rk[2] = KEYEXP(rk[1], 0x02);
rk[3] = KEYEXP(rk[2], 0x04);
rk[4] = KEYEXP(rk[3], 0x08);
rk[5] = KEYEXP(rk[4], 0x10);
rk[6] = KEYEXP(rk[5], 0x20);
rk[7] = KEYEXP(rk[6], 0x40);
rk[8] = KEYEXP(rk[7], 0x80);
rk[9] = KEYEXP(rk[8], 0x1b);
rk[10]= KEYEXP(rk[9], 0x36);
// Do the encrypt
m = _mm_loadu_si128((const __m128i*) plaintext);
/* first 9 rounds */
m = _mm_xor_si128(m, rk[0]);
m = _mm_aesenc_si128(m, rk[1]);
m = _mm_aesenc_si128(m, rk[2]);
m = _mm_aesenc_si128(m, rk[3]);
m = _mm_aesenc_si128(m, rk[4]);
m = _mm_aesenc_si128(m, rk[5]);
m = _mm_aesenc_si128(m, rk[6]);
m = _mm_aesenc_si128(m, rk[7]);
m = _mm_aesenc_si128(m, rk[8]);
m = _mm_aesenc_si128(m, rk[9]);
/* Last round */
m = _mm_aesenclast_si128(m, rk[10]);
_mm_storeu_si128((__m128i*) ciphertext, m);
}
/*
void aesni256k128d(unsigned char *key, const unsigned char *plaintext, const unsigned char *ciphertext)
{
__m128i rk[15];
__m128i m;
256 bit Key Expansion
rk[0] = _mm_loadu_si128((const __m128i*) key);
rk[1] = _mm_loadu_si128((const __m128i*) (key+16));
rk[2] = _mm_xor_si128(aes128_keyexpand(rk[0]), _mm_shuffle_epi32(_mm_aeskeygenassist_si128(rk[1], 0x01), 0xff));
rk[3] = _mm_xor_si128(aes128_keyexpand(rk[1]), _mm_shuffle_epi32(_mm_aeskeygenassist_si128(rk[2], 0x00), 0xaa));
rk[4] = _mm_xor_si128(aes128_keyexpand(rk[2]), _mm_shuffle_epi32(_mm_aeskeygenassist_si128(rk[3], 0x02), 0xff));
rk[5] = _mm_xor_si128(aes128_keyexpand(rk[3]), _mm_shuffle_epi32(_mm_aeskeygenassist_si128(rk[4], 0x00), 0xaa));
rk[6] = _mm_xor_si128(aes128_keyexpand(rk[4]), _mm_shuffle_epi32(_mm_aeskeygenassist_si128(rk[5], 0x04), 0xff));
rk[7] = _mm_xor_si128(aes128_keyexpand(rk[5]), _mm_shuffle_epi32(_mm_aeskeygenassist_si128(rk[6], 0x00), 0xaa));
rk[8] = _mm_xor_si128(aes128_keyexpand(rk[6]), _mm_shuffle_epi32(_mm_aeskeygenassist_si128(rk[7], 0x08), 0xff));
rk[9] = _mm_xor_si128(aes128_keyexpand(rk[7]), _mm_shuffle_epi32(_mm_aeskeygenassist_si128(rk[8], 0x00), 0xaa));
rk[10] = _mm_xor_si128(aes128_keyexpand(rk[8]), _mm_shuffle_epi32(_mm_aeskeygenassist_si128(rk[9], 0x10), 0xff));
rk[11] = _mm_xor_si128(aes128_keyexpand(rk[9]), _mm_shuffle_epi32(_mm_aeskeygenassist_si128(rk[10], 0x00), 0xaa));
rk[12] = _mm_xor_si128(aes128_keyexpand(rk[10]), _mm_shuffle_epi32(_mm_aeskeygenassist_si128(rk[11], 0x20), 0xff));
rk[13] = _mm_xor_si128(aes128_keyexpand(rk[11]), _mm_shuffle_epi32(_mm_aeskeygenassist_si128(rk[12], 0x00), 0xaa));
rk[14] = _mm_xor_si128(aes128_keyexpand(rk[12]), _mm_shuffle_epi32(_mm_aeskeygenassist_si128(rk[13], 0x40), 0xff));
Do the encrypt
m = _mm_loadu_si128((const __m128i*) plaintext);
first 9 rounds
m = _mm_xor_si128(m, rk[0]);
m = _mm_aesenc_si128(m, rk[1]);
m = _mm_aesenc_si128(m, rk[2]);
m = _mm_aesenc_si128(m, rk[3]);
m = _mm_aesenc_si128(m, rk[4]);
m = _mm_aesenc_si128(m, rk[5]);
m = _mm_aesenc_si128(m, rk[6]);
m = _mm_aesenc_si128(m, rk[7]);
m = _mm_aesenc_si128(m, rk[8]);
m = _mm_aesenc_si128(m, rk[9]);
m = _mm_aesenc_si128(m, rk[10]);
m = _mm_aesenc_si128(m, rk[11]);
m = _mm_aesenc_si128(m, rk[12]);
m = _mm_aesenc_si128(m, rk[13]);
m = _mm_aesenclast_si128(m, rk[14]);
_mm_storeu_si128((__m128i*) ciphertext, m);
}
*/
/* Choose between the two */
void aes128k128d(unsigned char *key, unsigned char *data, unsigned char *ciphertext) {
if (aesni_supported==1) {
aesni128k128d(key, data, ciphertext);
/* printf("using HW AES\n");*/
}
else {
aessw128k128d(key, data, ciphertext);
/*printf("using SW AES\n");*/
}
}