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6a690e23 | 1 | /*++\r |
2 | \r | |
7a444476 | 3 | Copyright (c) 2004 - 2007, Intel Corporation\r |
4 | All rights reserved. This program and the accompanying materials\r | |
5 | are licensed and made available under the terms and conditions of the BSD License\r | |
6 | which accompanies this distribution. The full text of the license may be found at\r | |
7 | http://opensource.org/licenses/bsd-license.php\r | |
8 | \r | |
9 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
10 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
6a690e23 | 11 | \r |
12 | Module Name:\r | |
13 | \r | |
14 | Md5.c\r | |
15 | \r | |
16 | Abstract:\r | |
17 | \r | |
18 | Implementation of MD5 algorithm\r | |
19 | \r | |
20 | --*/\r | |
21 | \r | |
22 | #include "Md5.h"\r | |
23 | \r | |
24 | STATIC CONST UINT32 MD5_K[][2] = {\r | |
25 | { 0, 1 },\r | |
26 | { 1, 5 },\r | |
27 | { 5, 3 },\r | |
28 | { 0, 7 }\r | |
29 | };\r | |
30 | \r | |
31 | STATIC CONST UINT32 MD5_S[][4] = {\r | |
32 | { 7, 22, 17, 12 },\r | |
33 | { 5, 20, 14, 9 },\r | |
34 | { 4, 23, 16 ,11 },\r | |
35 | { 6, 21, 15, 10 },\r | |
36 | };\r | |
37 | \r | |
38 | STATIC CONST UINT32 MD5_T[] = {\r | |
39 | 0xD76AA478, 0xE8C7B756, 0x242070DB, 0xC1BDCEEE,\r | |
40 | 0xF57C0FAF, 0x4787C62A, 0xA8304613, 0xFD469501,\r | |
41 | 0x698098D8, 0x8B44F7AF, 0xFFFF5BB1, 0x895CD7BE,\r | |
42 | 0x6B901122, 0xFD987193, 0xA679438E, 0x49B40821,\r | |
43 | 0xF61E2562, 0xC040B340, 0x265E5A51, 0xE9B6C7AA,\r | |
44 | 0xD62F105D, 0x02441453, 0xD8A1E681, 0xE7D3FBC8,\r | |
45 | 0x21E1CDE6, 0xC33707D6, 0xF4D50D87, 0x455A14ED,\r | |
46 | 0xA9E3E905, 0xFCEFA3F8, 0x676F02D9, 0x8D2A4C8A,\r | |
47 | 0xFFFA3942, 0x8771F681, 0x6D9D6122, 0xFDE5380C,\r | |
48 | 0xA4BEEA44, 0x4BDECFA9, 0xF6BB4B60, 0xBEBFBC70,\r | |
49 | 0x289B7EC6, 0xEAA127FA, 0xD4EF3085, 0x04881D05,\r | |
50 | 0xD9D4D039, 0xE6DB99E5, 0x1FA27CF8, 0xC4AC5665,\r | |
51 | 0xF4292244, 0x432AFF97, 0xAB9423A7, 0xFC93A039,\r | |
52 | 0x655B59C3, 0x8F0CCC92, 0xFFEFF47D, 0x85845DD1,\r | |
53 | 0x6FA87E4F, 0xFE2CE6E0, 0xA3014314, 0x4E0811A1,\r | |
54 | 0xF7537E82, 0xBD3AF235, 0x2AD7D2BB, 0xEB86D391\r | |
55 | };\r | |
56 | \r | |
57 | STATIC CONST UINT8 Md5HashPadding[] =\r | |
58 | {\r | |
59 | 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,\r | |
60 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,\r | |
61 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,\r | |
62 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,\r | |
63 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,\r | |
64 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,\r | |
65 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,\r | |
66 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,\r | |
67 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \r | |
68 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,\r | |
69 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,\r | |
70 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,\r | |
71 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,\r | |
72 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,\r | |
73 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,\r | |
74 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 \r | |
75 | };\r | |
76 | \r | |
77 | //\r | |
78 | // ROTATE_LEFT rotates x left n bits.\r | |
79 | //\r | |
80 | #define ROTATE_LEFT(x, n) (((x) << (n)) | ((x) >> (32 - (n))))\r | |
81 | \r | |
82 | #define SA S[j & 3]\r | |
83 | #define SB S[(j + 1) & 3]\r | |
84 | #define SC S[(j + 2) & 3]\r | |
85 | #define SD S[(j + 3) & 3]\r | |
86 | \r | |
87 | //\r | |
88 | // TF1, TF2, TF3, TF4 are basic MD5 transform functions\r | |
89 | //\r | |
90 | UINT32 TF1 (UINT32 A, UINT32 B, UINT32 C)\r | |
91 | {\r | |
92 | return (A & B) | (~A & C);\r | |
93 | }\r | |
94 | \r | |
95 | UINT32 TF2 (UINT32 A, UINT32 B, UINT32 C)\r | |
96 | {\r | |
97 | return (A & C) | (B & ~C);\r | |
98 | }\r | |
99 | \r | |
100 | UINT32 TF3 (UINT32 A, UINT32 B, UINT32 C)\r | |
101 | {\r | |
102 | return A ^ B ^ C;\r | |
103 | }\r | |
104 | \r | |
105 | UINT32 TF4 (UINT32 A, UINT32 B, UINT32 C)\r | |
106 | {\r | |
107 | return B ^ (A | ~C);\r | |
108 | }\r | |
109 | \r | |
110 | typedef\r | |
111 | UINT32\r | |
112 | (*MD5_TRANSFORM_FUNC) (\r | |
113 | IN UINT32 A,\r | |
114 | IN UINT32 B,\r | |
115 | IN UINT32 C\r | |
116 | );\r | |
117 | \r | |
118 | STATIC CONST MD5_TRANSFORM_FUNC MD5_F[] = {\r | |
119 | TF1,\r | |
120 | TF2,\r | |
121 | TF3,\r | |
122 | TF4\r | |
123 | };\r | |
124 | \r | |
125 | STATIC\r | |
126 | VOID\r | |
127 | MD5Transform (\r | |
128 | IN MD5_CTX *Md5Ctx\r | |
129 | )\r | |
130 | /*++\r | |
131 | \r | |
132 | Routine Description:\r | |
133 | \r | |
134 | GC_TODO: Add function description\r | |
135 | \r | |
136 | Arguments:\r | |
137 | \r | |
138 | Md5Ctx - GC_TODO: add argument description\r | |
139 | \r | |
140 | Returns:\r | |
141 | \r | |
142 | GC_TODO: add return values\r | |
143 | \r | |
144 | --*/\r | |
145 | {\r | |
146 | UINT32 i;\r | |
147 | UINT32 j;\r | |
148 | UINT32 S[MD5_HASHSIZE >> 2];\r | |
149 | UINT32 *X;\r | |
150 | UINT32 k;\r | |
151 | UINT32 t;\r | |
152 | \r | |
153 | X = (UINT32 *) Md5Ctx->M;\r | |
154 | \r | |
155 | //\r | |
156 | // Copy MD5 states to S\r | |
157 | //\r | |
158 | NetCopyMem (S, Md5Ctx->States, MD5_HASHSIZE);\r | |
159 | \r | |
160 | t = 0;\r | |
161 | for (i = 0; i < 4; i++) {\r | |
162 | k = MD5_K[i][0];\r | |
163 | for (j = 16; j > 0; j--) {\r | |
164 | SA += (*MD5_F[i]) (SB, SC, SD) + X[k] + MD5_T[t];\r | |
165 | SA = ROTATE_LEFT (SA, MD5_S[i][j & 3]);\r | |
166 | SA += SB;\r | |
167 | \r | |
168 | k += MD5_K[i][1];\r | |
169 | k &= 15;\r | |
170 | \r | |
171 | t++;\r | |
172 | }\r | |
173 | }\r | |
174 | \r | |
175 | for (i = 0; i < 4; i++) {\r | |
176 | Md5Ctx->States[i] += S[i];\r | |
177 | }\r | |
178 | }\r | |
179 | \r | |
180 | STATIC\r | |
181 | VOID\r | |
182 | MD5UpdateBlock (\r | |
183 | IN MD5_CTX *Md5Ctx,\r | |
184 | IN CONST UINT8 *Data,\r | |
185 | IN UINTN DataLen\r | |
186 | )\r | |
187 | /*++\r | |
188 | \r | |
189 | Routine Description:\r | |
190 | \r | |
191 | GC_TODO: Add function description\r | |
192 | \r | |
193 | Arguments:\r | |
194 | \r | |
195 | Md5Ctx - GC_TODO: add argument description\r | |
196 | Data - GC_TODO: add argument description\r | |
197 | DataLen - GC_TODO: add argument description\r | |
198 | \r | |
199 | Returns:\r | |
200 | \r | |
201 | GC_TODO: add return values\r | |
202 | \r | |
203 | --*/\r | |
204 | {\r | |
205 | UINTN Limit;\r | |
206 | \r | |
207 | for (Limit = 64 - Md5Ctx->Count; DataLen >= 64 - Md5Ctx->Count; Limit = 64) {\r | |
208 | NetCopyMem (Md5Ctx->M + Md5Ctx->Count, (VOID *)Data, Limit);\r | |
209 | MD5Transform (Md5Ctx);\r | |
210 | \r | |
211 | Md5Ctx->Count = 0;\r | |
212 | Data += Limit;\r | |
213 | DataLen -= Limit;\r | |
214 | }\r | |
215 | \r | |
216 | NetCopyMem (Md5Ctx->M + Md5Ctx->Count, (VOID *)Data, DataLen);\r | |
217 | Md5Ctx->Count += DataLen;\r | |
218 | }\r | |
219 | \r | |
220 | EFI_STATUS\r | |
221 | MD5Init (\r | |
222 | IN MD5_CTX *Md5Ctx\r | |
223 | )\r | |
224 | /*++\r | |
225 | \r | |
226 | Routine Description:\r | |
227 | \r | |
228 | GC_TODO: Add function description\r | |
229 | \r | |
230 | Arguments:\r | |
231 | \r | |
232 | Md5Ctx - GC_TODO: add argument description\r | |
233 | \r | |
234 | Returns:\r | |
235 | \r | |
236 | EFI_SUCCESS - GC_TODO: Add description for return value\r | |
237 | \r | |
238 | --*/\r | |
239 | {\r | |
240 | NetZeroMem (Md5Ctx, sizeof (*Md5Ctx));\r | |
241 | \r | |
242 | //\r | |
243 | // Set magic initialization constants.\r | |
244 | //\r | |
245 | Md5Ctx->States[0] = 0x67452301;\r | |
246 | Md5Ctx->States[1] = 0xefcdab89;\r | |
247 | Md5Ctx->States[2] = 0x98badcfe;\r | |
248 | Md5Ctx->States[3] = 0x10325476; \r | |
249 | \r | |
250 | return EFI_SUCCESS;\r | |
251 | }\r | |
252 | \r | |
253 | EFI_STATUS\r | |
254 | MD5Update (\r | |
255 | IN MD5_CTX *Md5Ctx,\r | |
256 | IN VOID *Data,\r | |
257 | IN UINTN DataLen\r | |
258 | )\r | |
259 | /*++\r | |
260 | \r | |
261 | Routine Description:\r | |
262 | \r | |
263 | GC_TODO: Add function description\r | |
264 | \r | |
265 | Arguments:\r | |
266 | \r | |
267 | Md5Ctx - GC_TODO: add argument description\r | |
268 | Data - GC_TODO: add argument description\r | |
269 | DataLen - GC_TODO: add argument description\r | |
270 | \r | |
271 | Returns:\r | |
272 | \r | |
273 | EFI_SUCCESS - GC_TODO: Add description for return value\r | |
274 | \r | |
275 | --*/\r | |
276 | {\r | |
277 | if (EFI_ERROR (Md5Ctx->Status)) {\r | |
278 | return Md5Ctx->Status;\r | |
279 | }\r | |
280 | \r | |
281 | MD5UpdateBlock (Md5Ctx, (CONST UINT8 *) Data, DataLen);\r | |
282 | Md5Ctx->Length += DataLen;\r | |
283 | return EFI_SUCCESS;\r | |
284 | }\r | |
285 | \r | |
286 | EFI_STATUS\r | |
287 | MD5Final (\r | |
288 | IN MD5_CTX *Md5Ctx,\r | |
289 | OUT UINT8 *HashVal\r | |
290 | )\r | |
291 | /*++\r | |
292 | \r | |
293 | Routine Description:\r | |
294 | \r | |
295 | GC_TODO: Add function description\r | |
296 | \r | |
297 | Arguments:\r | |
298 | \r | |
299 | Md5Ctx - GC_TODO: add argument description\r | |
300 | HashVal - GC_TODO: add argument description\r | |
301 | \r | |
302 | Returns:\r | |
303 | \r | |
304 | EFI_SUCCESS - GC_TODO: Add description for return value\r | |
305 | \r | |
306 | --*/\r | |
307 | {\r | |
308 | UINTN PadLength;\r | |
309 | \r | |
310 | if (Md5Ctx->Status == EFI_ALREADY_STARTED) {\r | |
311 | //\r | |
312 | // Store Hashed value & Zeroize sensitive context information.\r | |
313 | //\r | |
314 | NetCopyMem (HashVal, (UINT8 *) Md5Ctx->States, MD5_HASHSIZE);\r | |
315 | NetZeroMem ((UINT8 *)Md5Ctx, sizeof (*Md5Ctx));\r | |
316 | \r | |
317 | return EFI_SUCCESS;\r | |
318 | }\r | |
319 | \r | |
320 | if (EFI_ERROR (Md5Ctx->Status)) {\r | |
321 | return Md5Ctx->Status;\r | |
322 | }\r | |
323 | \r | |
324 | PadLength = Md5Ctx->Count >= 56 ? 120 : 56;\r | |
325 | PadLength -= Md5Ctx->Count;\r | |
326 | MD5UpdateBlock (Md5Ctx, Md5HashPadding, PadLength);\r | |
327 | Md5Ctx->Length = LShiftU64 (Md5Ctx->Length, 3);\r | |
328 | MD5UpdateBlock (Md5Ctx, (CONST UINT8 *) &Md5Ctx->Length, 8);\r | |
329 | \r | |
330 | NetZeroMem (Md5Ctx->M, sizeof (Md5Ctx->M));\r | |
331 | Md5Ctx->Length = 0;\r | |
332 | Md5Ctx->Status = EFI_ALREADY_STARTED;\r | |
333 | return MD5Final (Md5Ctx, HashVal);\r | |
334 | }\r | |
335 | \r |