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33#include "device.h"
34#include "80211hdr.h"
35
36
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43
44
45
46BYTE sbox_table[256] = {
47 0x63, 0x7c, 0x77, 0x7b, 0xf2, 0x6b, 0x6f, 0xc5, 0x30, 0x01, 0x67, 0x2b, 0xfe, 0xd7, 0xab, 0x76,
48 0xca, 0x82, 0xc9, 0x7d, 0xfa, 0x59, 0x47, 0xf0, 0xad, 0xd4, 0xa2, 0xaf, 0x9c, 0xa4, 0x72, 0xc0,
49 0xb7, 0xfd, 0x93, 0x26, 0x36, 0x3f, 0xf7, 0xcc, 0x34, 0xa5, 0xe5, 0xf1, 0x71, 0xd8, 0x31, 0x15,
50 0x04, 0xc7, 0x23, 0xc3, 0x18, 0x96, 0x05, 0x9a, 0x07, 0x12, 0x80, 0xe2, 0xeb, 0x27, 0xb2, 0x75,
51 0x09, 0x83, 0x2c, 0x1a, 0x1b, 0x6e, 0x5a, 0xa0, 0x52, 0x3b, 0xd6, 0xb3, 0x29, 0xe3, 0x2f, 0x84,
52 0x53, 0xd1, 0x00, 0xed, 0x20, 0xfc, 0xb1, 0x5b, 0x6a, 0xcb, 0xbe, 0x39, 0x4a, 0x4c, 0x58, 0xcf,
53 0xd0, 0xef, 0xaa, 0xfb, 0x43, 0x4d, 0x33, 0x85, 0x45, 0xf9, 0x02, 0x7f, 0x50, 0x3c, 0x9f, 0xa8,
54 0x51, 0xa3, 0x40, 0x8f, 0x92, 0x9d, 0x38, 0xf5, 0xbc, 0xb6, 0xda, 0x21, 0x10, 0xff, 0xf3, 0xd2,
55 0xcd, 0x0c, 0x13, 0xec, 0x5f, 0x97, 0x44, 0x17, 0xc4, 0xa7, 0x7e, 0x3d, 0x64, 0x5d, 0x19, 0x73,
56 0x60, 0x81, 0x4f, 0xdc, 0x22, 0x2a, 0x90, 0x88, 0x46, 0xee, 0xb8, 0x14, 0xde, 0x5e, 0x0b, 0xdb,
57 0xe0, 0x32, 0x3a, 0x0a, 0x49, 0x06, 0x24, 0x5c, 0xc2, 0xd3, 0xac, 0x62, 0x91, 0x95, 0xe4, 0x79,
58 0xe7, 0xc8, 0x37, 0x6d, 0x8d, 0xd5, 0x4e, 0xa9, 0x6c, 0x56, 0xf4, 0xea, 0x65, 0x7a, 0xae, 0x08,
59 0xba, 0x78, 0x25, 0x2e, 0x1c, 0xa6, 0xb4, 0xc6, 0xe8, 0xdd, 0x74, 0x1f, 0x4b, 0xbd, 0x8b, 0x8a,
60 0x70, 0x3e, 0xb5, 0x66, 0x48, 0x03, 0xf6, 0x0e, 0x61, 0x35, 0x57, 0xb9, 0x86, 0xc1, 0x1d, 0x9e,
61 0xe1, 0xf8, 0x98, 0x11, 0x69, 0xd9, 0x8e, 0x94, 0x9b, 0x1e, 0x87, 0xe9, 0xce, 0x55, 0x28, 0xdf,
62 0x8c, 0xa1, 0x89, 0x0d, 0xbf, 0xe6, 0x42, 0x68, 0x41, 0x99, 0x2d, 0x0f, 0xb0, 0x54, 0xbb, 0x16
63};
64
65BYTE dot2_table[256] = {
66 0x00, 0x02, 0x04, 0x06, 0x08, 0x0a, 0x0c, 0x0e, 0x10, 0x12, 0x14, 0x16, 0x18, 0x1a, 0x1c, 0x1e,
67 0x20, 0x22, 0x24, 0x26, 0x28, 0x2a, 0x2c, 0x2e, 0x30, 0x32, 0x34, 0x36, 0x38, 0x3a, 0x3c, 0x3e,
68 0x40, 0x42, 0x44, 0x46, 0x48, 0x4a, 0x4c, 0x4e, 0x50, 0x52, 0x54, 0x56, 0x58, 0x5a, 0x5c, 0x5e,
69 0x60, 0x62, 0x64, 0x66, 0x68, 0x6a, 0x6c, 0x6e, 0x70, 0x72, 0x74, 0x76, 0x78, 0x7a, 0x7c, 0x7e,
70 0x80, 0x82, 0x84, 0x86, 0x88, 0x8a, 0x8c, 0x8e, 0x90, 0x92, 0x94, 0x96, 0x98, 0x9a, 0x9c, 0x9e,
71 0xa0, 0xa2, 0xa4, 0xa6, 0xa8, 0xaa, 0xac, 0xae, 0xb0, 0xb2, 0xb4, 0xb6, 0xb8, 0xba, 0xbc, 0xbe,
72 0xc0, 0xc2, 0xc4, 0xc6, 0xc8, 0xca, 0xcc, 0xce, 0xd0, 0xd2, 0xd4, 0xd6, 0xd8, 0xda, 0xdc, 0xde,
73 0xe0, 0xe2, 0xe4, 0xe6, 0xe8, 0xea, 0xec, 0xee, 0xf0, 0xf2, 0xf4, 0xf6, 0xf8, 0xfa, 0xfc, 0xfe,
74 0x1b, 0x19, 0x1f, 0x1d, 0x13, 0x11, 0x17, 0x15, 0x0b, 0x09, 0x0f, 0x0d, 0x03, 0x01, 0x07, 0x05,
75 0x3b, 0x39, 0x3f, 0x3d, 0x33, 0x31, 0x37, 0x35, 0x2b, 0x29, 0x2f, 0x2d, 0x23, 0x21, 0x27, 0x25,
76 0x5b, 0x59, 0x5f, 0x5d, 0x53, 0x51, 0x57, 0x55, 0x4b, 0x49, 0x4f, 0x4d, 0x43, 0x41, 0x47, 0x45,
77 0x7b, 0x79, 0x7f, 0x7d, 0x73, 0x71, 0x77, 0x75, 0x6b, 0x69, 0x6f, 0x6d, 0x63, 0x61, 0x67, 0x65,
78 0x9b, 0x99, 0x9f, 0x9d, 0x93, 0x91, 0x97, 0x95, 0x8b, 0x89, 0x8f, 0x8d, 0x83, 0x81, 0x87, 0x85,
79 0xbb, 0xb9, 0xbf, 0xbd, 0xb3, 0xb1, 0xb7, 0xb5, 0xab, 0xa9, 0xaf, 0xad, 0xa3, 0xa1, 0xa7, 0xa5,
80 0xdb, 0xd9, 0xdf, 0xdd, 0xd3, 0xd1, 0xd7, 0xd5, 0xcb, 0xc9, 0xcf, 0xcd, 0xc3, 0xc1, 0xc7, 0xc5,
81 0xfb, 0xf9, 0xff, 0xfd, 0xf3, 0xf1, 0xf7, 0xf5, 0xeb, 0xe9, 0xef, 0xed, 0xe3, 0xe1, 0xe7, 0xe5
82};
83
84BYTE dot3_table[256] = {
85 0x00, 0x03, 0x06, 0x05, 0x0c, 0x0f, 0x0a, 0x09, 0x18, 0x1b, 0x1e, 0x1d, 0x14, 0x17, 0x12, 0x11,
86 0x30, 0x33, 0x36, 0x35, 0x3c, 0x3f, 0x3a, 0x39, 0x28, 0x2b, 0x2e, 0x2d, 0x24, 0x27, 0x22, 0x21,
87 0x60, 0x63, 0x66, 0x65, 0x6c, 0x6f, 0x6a, 0x69, 0x78, 0x7b, 0x7e, 0x7d, 0x74, 0x77, 0x72, 0x71,
88 0x50, 0x53, 0x56, 0x55, 0x5c, 0x5f, 0x5a, 0x59, 0x48, 0x4b, 0x4e, 0x4d, 0x44, 0x47, 0x42, 0x41,
89 0xc0, 0xc3, 0xc6, 0xc5, 0xcc, 0xcf, 0xca, 0xc9, 0xd8, 0xdb, 0xde, 0xdd, 0xd4, 0xd7, 0xd2, 0xd1,
90 0xf0, 0xf3, 0xf6, 0xf5, 0xfc, 0xff, 0xfa, 0xf9, 0xe8, 0xeb, 0xee, 0xed, 0xe4, 0xe7, 0xe2, 0xe1,
91 0xa0, 0xa3, 0xa6, 0xa5, 0xac, 0xaf, 0xaa, 0xa9, 0xb8, 0xbb, 0xbe, 0xbd, 0xb4, 0xb7, 0xb2, 0xb1,
92 0x90, 0x93, 0x96, 0x95, 0x9c, 0x9f, 0x9a, 0x99, 0x88, 0x8b, 0x8e, 0x8d, 0x84, 0x87, 0x82, 0x81,
93 0x9b, 0x98, 0x9d, 0x9e, 0x97, 0x94, 0x91, 0x92, 0x83, 0x80, 0x85, 0x86, 0x8f, 0x8c, 0x89, 0x8a,
94 0xab, 0xa8, 0xad, 0xae, 0xa7, 0xa4, 0xa1, 0xa2, 0xb3, 0xb0, 0xb5, 0xb6, 0xbf, 0xbc, 0xb9, 0xba,
95 0xfb, 0xf8, 0xfd, 0xfe, 0xf7, 0xf4, 0xf1, 0xf2, 0xe3, 0xe0, 0xe5, 0xe6, 0xef, 0xec, 0xe9, 0xea,
96 0xcb, 0xc8, 0xcd, 0xce, 0xc7, 0xc4, 0xc1, 0xc2, 0xd3, 0xd0, 0xd5, 0xd6, 0xdf, 0xdc, 0xd9, 0xda,
97 0x5b, 0x58, 0x5d, 0x5e, 0x57, 0x54, 0x51, 0x52, 0x43, 0x40, 0x45, 0x46, 0x4f, 0x4c, 0x49, 0x4a,
98 0x6b, 0x68, 0x6d, 0x6e, 0x67, 0x64, 0x61, 0x62, 0x73, 0x70, 0x75, 0x76, 0x7f, 0x7c, 0x79, 0x7a,
99 0x3b, 0x38, 0x3d, 0x3e, 0x37, 0x34, 0x31, 0x32, 0x23, 0x20, 0x25, 0x26, 0x2f, 0x2c, 0x29, 0x2a,
100 0x0b, 0x08, 0x0d, 0x0e, 0x07, 0x04, 0x01, 0x02, 0x13, 0x10, 0x15, 0x16, 0x1f, 0x1c, 0x19, 0x1a
101};
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108
109static void xor_128(BYTE *a, BYTE *b, BYTE *out)
110{
111 PDWORD dwPtrA = (PDWORD) a;
112 PDWORD dwPtrB = (PDWORD) b;
113 PDWORD dwPtrOut = (PDWORD) out;
114
115 (*dwPtrOut++) = (*dwPtrA++) ^ (*dwPtrB++);
116 (*dwPtrOut++) = (*dwPtrA++) ^ (*dwPtrB++);
117 (*dwPtrOut++) = (*dwPtrA++) ^ (*dwPtrB++);
118 (*dwPtrOut++) = (*dwPtrA++) ^ (*dwPtrB++);
119}
120
121
122static void xor_32(BYTE *a, BYTE *b, BYTE *out)
123{
124 PDWORD dwPtrA = (PDWORD) a;
125 PDWORD dwPtrB = (PDWORD) b;
126 PDWORD dwPtrOut = (PDWORD) out;
127
128 (*dwPtrOut++) = (*dwPtrA++) ^ (*dwPtrB++);
129}
130
131void AddRoundKey(BYTE *key, int round)
132{
133 BYTE sbox_key[4];
134 BYTE rcon_table[10] = { 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36};
135
136 sbox_key[0] = sbox_table[key[13]];
137 sbox_key[1] = sbox_table[key[14]];
138 sbox_key[2] = sbox_table[key[15]];
139 sbox_key[3] = sbox_table[key[12]];
140
141 key[0] = key[0] ^ rcon_table[round];
142 xor_32(&key[0], sbox_key, &key[0]);
143
144 xor_32(&key[4], &key[0], &key[4]);
145 xor_32(&key[8], &key[4], &key[8]);
146 xor_32(&key[12], &key[8], &key[12]);
147}
148
149void SubBytes(BYTE *in, BYTE *out)
150{
151 int i;
152
153 for (i = 0; i < 16; i++)
154 out[i] = sbox_table[in[i]];
155}
156
157void ShiftRows(BYTE *in, BYTE *out)
158{
159 out[0] = in[0];
160 out[1] = in[5];
161 out[2] = in[10];
162 out[3] = in[15];
163 out[4] = in[4];
164 out[5] = in[9];
165 out[6] = in[14];
166 out[7] = in[3];
167 out[8] = in[8];
168 out[9] = in[13];
169 out[10] = in[2];
170 out[11] = in[7];
171 out[12] = in[12];
172 out[13] = in[1];
173 out[14] = in[6];
174 out[15] = in[11];
175}
176
177void MixColumns(BYTE *in, BYTE *out)
178{
179
180 out[0] = dot2_table[in[0]] ^ dot3_table[in[1]] ^ in[2] ^ in[3];
181 out[1] = in[0] ^ dot2_table[in[1]] ^ dot3_table[in[2]] ^ in[3];
182 out[2] = in[0] ^ in[1] ^ dot2_table[in[2]] ^ dot3_table[in[3]];
183 out[3] = dot3_table[in[0]] ^ in[1] ^ in[2] ^ dot2_table[in[3]];
184}
185
186void AESv128(BYTE *key, BYTE *data, BYTE *ciphertext)
187{
188 int i;
189 int round;
190 BYTE TmpdataA[16];
191 BYTE TmpdataB[16];
192 BYTE abyRoundKey[16];
193
194 for (i = 0; i < 16; i++)
195 abyRoundKey[i] = key[i];
196
197 for (round = 0; round < 11; round++) {
198 if (round == 0) {
199 xor_128(abyRoundKey, data, ciphertext);
200 AddRoundKey(abyRoundKey, round);
201 } else if (round == 10) {
202 SubBytes(ciphertext, TmpdataA);
203 ShiftRows(TmpdataA, TmpdataB);
204 xor_128(TmpdataB, abyRoundKey, ciphertext);
205 } else {
206 SubBytes(ciphertext, TmpdataA);
207 ShiftRows(TmpdataA, TmpdataB);
208 MixColumns(&TmpdataB[0], &TmpdataA[0]);
209 MixColumns(&TmpdataB[4], &TmpdataA[4]);
210 MixColumns(&TmpdataB[8], &TmpdataA[8]);
211 MixColumns(&TmpdataB[12], &TmpdataA[12]);
212 xor_128(TmpdataA, abyRoundKey, ciphertext);
213 AddRoundKey(abyRoundKey, round);
214 }
215 }
216
217}
218
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232
233
234BOOL AESbGenCCMP(PBYTE pbyRxKey, PBYTE pbyFrame, WORD wFrameSize)
235{
236 BYTE abyNonce[13];
237 BYTE MIC_IV[16];
238 BYTE MIC_HDR1[16];
239 BYTE MIC_HDR2[16];
240 BYTE abyMIC[16];
241 BYTE abyCTRPLD[16];
242 BYTE abyTmp[16];
243 BYTE abyPlainText[16];
244 BYTE abyLastCipher[16];
245
246 PS802_11Header pMACHeader = (PS802_11Header) pbyFrame;
247 PBYTE pbyIV;
248 PBYTE pbyPayload;
249 WORD wHLen = 22;
250
251 WORD wPayloadSize = wFrameSize - 8 - 8 - 4 - WLAN_HDR_ADDR3_LEN;
252 BOOL bA4 = FALSE;
253 BYTE byTmp;
254 WORD wCnt;
255 int ii, jj, kk;
256
257 pbyIV = pbyFrame + WLAN_HDR_ADDR3_LEN;
258 if (WLAN_GET_FC_TODS(*(PWORD) pbyFrame) &&
259 WLAN_GET_FC_FROMDS(*(PWORD) pbyFrame)) {
260 bA4 = TRUE;
261 pbyIV += 6;
262 wHLen += 6;
263 wPayloadSize -= 6;
264 }
265 pbyPayload = pbyIV + 8;
266
267 abyNonce[0] = 0x00;
268 memcpy(&(abyNonce[1]), pMACHeader->abyAddr2, ETH_ALEN);
269 abyNonce[7] = pbyIV[7];
270 abyNonce[8] = pbyIV[6];
271 abyNonce[9] = pbyIV[5];
272 abyNonce[10] = pbyIV[4];
273 abyNonce[11] = pbyIV[1];
274 abyNonce[12] = pbyIV[0];
275
276
277 MIC_IV[0] = 0x59;
278 memcpy(&(MIC_IV[1]), &(abyNonce[0]), 13);
279 MIC_IV[14] = (BYTE)(wPayloadSize >> 8);
280 MIC_IV[15] = (BYTE)(wPayloadSize & 0xff);
281
282
283 MIC_HDR1[0] = (BYTE)(wHLen >> 8);
284 MIC_HDR1[1] = (BYTE)(wHLen & 0xff);
285 byTmp = (BYTE)(pMACHeader->wFrameCtl & 0xff);
286 MIC_HDR1[2] = byTmp & 0x8f;
287 byTmp = (BYTE)(pMACHeader->wFrameCtl >> 8);
288 byTmp &= 0x87;
289 MIC_HDR1[3] = byTmp | 0x40;
290 memcpy(&(MIC_HDR1[4]), pMACHeader->abyAddr1, ETH_ALEN);
291 memcpy(&(MIC_HDR1[10]), pMACHeader->abyAddr2, ETH_ALEN);
292
293
294 memcpy(&(MIC_HDR2[0]), pMACHeader->abyAddr3, ETH_ALEN);
295 byTmp = (BYTE)(pMACHeader->wSeqCtl & 0xff);
296 MIC_HDR2[6] = byTmp & 0x0f;
297 MIC_HDR2[7] = 0;
298
299 if (bA4) {
300 memcpy(&(MIC_HDR2[8]), pMACHeader->abyAddr4, ETH_ALEN);
301 } else {
302 MIC_HDR2[8] = 0x00;
303 MIC_HDR2[9] = 0x00;
304 MIC_HDR2[10] = 0x00;
305 MIC_HDR2[11] = 0x00;
306 MIC_HDR2[12] = 0x00;
307 MIC_HDR2[13] = 0x00;
308 }
309 MIC_HDR2[14] = 0x00;
310 MIC_HDR2[15] = 0x00;
311
312
313 AESv128(pbyRxKey, MIC_IV, abyMIC);
314 for (kk = 0; kk < 16; kk++)
315 abyTmp[kk] = MIC_HDR1[kk] ^ abyMIC[kk];
316
317 AESv128(pbyRxKey, abyTmp, abyMIC);
318 for (kk = 0; kk < 16; kk++)
319 abyTmp[kk] = MIC_HDR2[kk] ^ abyMIC[kk];
320
321 AESv128(pbyRxKey, abyTmp, abyMIC);
322
323 wCnt = 1;
324 abyCTRPLD[0] = 0x01;
325 memcpy(&(abyCTRPLD[1]), &(abyNonce[0]), 13);
326
327 for (jj = wPayloadSize; jj > 16; jj = jj-16) {
328
329 abyCTRPLD[14] = (BYTE) (wCnt >> 8);
330 abyCTRPLD[15] = (BYTE) (wCnt & 0xff);
331
332 AESv128(pbyRxKey, abyCTRPLD, abyTmp);
333
334 for (kk = 0; kk < 16; kk++)
335 abyPlainText[kk] = abyTmp[kk] ^ pbyPayload[kk];
336
337 for (kk = 0; kk < 16; kk++)
338 abyTmp[kk] = abyMIC[kk] ^ abyPlainText[kk];
339
340 AESv128(pbyRxKey, abyTmp, abyMIC);
341
342 memcpy(pbyPayload, abyPlainText, 16);
343 wCnt++;
344 pbyPayload += 16;
345 }
346
347
348 memcpy(&(abyLastCipher[0]), pbyPayload, jj);
349 for (ii = jj; ii < 16; ii++)
350 abyLastCipher[ii] = 0x00;
351
352 abyCTRPLD[14] = (BYTE) (wCnt >> 8);
353 abyCTRPLD[15] = (BYTE) (wCnt & 0xff);
354
355 AESv128(pbyRxKey, abyCTRPLD, abyTmp);
356 for (kk = 0; kk < 16; kk++)
357 abyPlainText[kk] = abyTmp[kk] ^ abyLastCipher[kk];
358
359 memcpy(pbyPayload, abyPlainText, jj);
360 pbyPayload += jj;
361
362
363 for (ii = jj; ii < 16; ii++)
364 abyPlainText[ii] = 0x00;
365 for (kk = 0; kk < 16; kk++)
366 abyTmp[kk] = abyMIC[kk] ^ abyPlainText[kk];
367
368 AESv128(pbyRxKey, abyTmp, abyMIC);
369
370
371
372 wCnt = 0;
373 abyCTRPLD[14] = (BYTE) (wCnt >> 8);
374 abyCTRPLD[15] = (BYTE) (wCnt & 0xff);
375 AESv128(pbyRxKey, abyCTRPLD, abyTmp);
376
377 for (kk = 0; kk < 8; kk++)
378 abyTmp[kk] = abyTmp[kk] ^ pbyPayload[kk];
379
380
381
382 if (!memcmp(abyMIC, abyTmp, 8))
383 return TRUE;
384 else
385 return FALSE;
386}
387
