/src/krb5/src/lib/crypto/builtin/aes/aestab.c
Line | Count | Source |
1 | | /* |
2 | | --------------------------------------------------------------------------- |
3 | | Copyright (c) 1998-2013, Brian Gladman, Worcester, UK. All rights reserved. |
4 | | |
5 | | The redistribution and use of this software (with or without changes) |
6 | | is allowed without the payment of fees or royalties provided that: |
7 | | |
8 | | source code distributions include the above copyright notice, this |
9 | | list of conditions and the following disclaimer; |
10 | | |
11 | | binary distributions include the above copyright notice, this list |
12 | | of conditions and the following disclaimer in their documentation. |
13 | | |
14 | | This software is provided 'as is' with no explicit or implied warranties |
15 | | in respect of its operation, including, but not limited to, correctness |
16 | | and fitness for purpose. |
17 | | --------------------------------------------------------------------------- |
18 | | Issue Date: 20/12/2007 |
19 | | */ |
20 | | |
21 | | #define DO_TABLES |
22 | | |
23 | | #include "aes.h" |
24 | | #include "aesopt.h" |
25 | | |
26 | | #include "crypto_int.h" |
27 | | #ifdef K5_BUILTIN_AES |
28 | | |
29 | | #if defined(STATIC_TABLES) |
30 | | |
31 | | #define sb_data(w) {\ |
32 | | w(0x63), w(0x7c), w(0x77), w(0x7b), w(0xf2), w(0x6b), w(0x6f), w(0xc5),\ |
33 | | w(0x30), w(0x01), w(0x67), w(0x2b), w(0xfe), w(0xd7), w(0xab), w(0x76),\ |
34 | | w(0xca), w(0x82), w(0xc9), w(0x7d), w(0xfa), w(0x59), w(0x47), w(0xf0),\ |
35 | | w(0xad), w(0xd4), w(0xa2), w(0xaf), w(0x9c), w(0xa4), w(0x72), w(0xc0),\ |
36 | | w(0xb7), w(0xfd), w(0x93), w(0x26), w(0x36), w(0x3f), w(0xf7), w(0xcc),\ |
37 | | w(0x34), w(0xa5), w(0xe5), w(0xf1), w(0x71), w(0xd8), w(0x31), w(0x15),\ |
38 | | w(0x04), w(0xc7), w(0x23), w(0xc3), w(0x18), w(0x96), w(0x05), w(0x9a),\ |
39 | | w(0x07), w(0x12), w(0x80), w(0xe2), w(0xeb), w(0x27), w(0xb2), w(0x75),\ |
40 | | w(0x09), w(0x83), w(0x2c), w(0x1a), w(0x1b), w(0x6e), w(0x5a), w(0xa0),\ |
41 | | w(0x52), w(0x3b), w(0xd6), w(0xb3), w(0x29), w(0xe3), w(0x2f), w(0x84),\ |
42 | | w(0x53), w(0xd1), w(0x00), w(0xed), w(0x20), w(0xfc), w(0xb1), w(0x5b),\ |
43 | | w(0x6a), w(0xcb), w(0xbe), w(0x39), w(0x4a), w(0x4c), w(0x58), w(0xcf),\ |
44 | | w(0xd0), w(0xef), w(0xaa), w(0xfb), w(0x43), w(0x4d), w(0x33), w(0x85),\ |
45 | | w(0x45), w(0xf9), w(0x02), w(0x7f), w(0x50), w(0x3c), w(0x9f), w(0xa8),\ |
46 | | w(0x51), w(0xa3), w(0x40), w(0x8f), w(0x92), w(0x9d), w(0x38), w(0xf5),\ |
47 | | w(0xbc), w(0xb6), w(0xda), w(0x21), w(0x10), w(0xff), w(0xf3), w(0xd2),\ |
48 | | w(0xcd), w(0x0c), w(0x13), w(0xec), w(0x5f), w(0x97), w(0x44), w(0x17),\ |
49 | | w(0xc4), w(0xa7), w(0x7e), w(0x3d), w(0x64), w(0x5d), w(0x19), w(0x73),\ |
50 | | w(0x60), w(0x81), w(0x4f), w(0xdc), w(0x22), w(0x2a), w(0x90), w(0x88),\ |
51 | | w(0x46), w(0xee), w(0xb8), w(0x14), w(0xde), w(0x5e), w(0x0b), w(0xdb),\ |
52 | | w(0xe0), w(0x32), w(0x3a), w(0x0a), w(0x49), w(0x06), w(0x24), w(0x5c),\ |
53 | | w(0xc2), w(0xd3), w(0xac), w(0x62), w(0x91), w(0x95), w(0xe4), w(0x79),\ |
54 | | w(0xe7), w(0xc8), w(0x37), w(0x6d), w(0x8d), w(0xd5), w(0x4e), w(0xa9),\ |
55 | | w(0x6c), w(0x56), w(0xf4), w(0xea), w(0x65), w(0x7a), w(0xae), w(0x08),\ |
56 | | w(0xba), w(0x78), w(0x25), w(0x2e), w(0x1c), w(0xa6), w(0xb4), w(0xc6),\ |
57 | | w(0xe8), w(0xdd), w(0x74), w(0x1f), w(0x4b), w(0xbd), w(0x8b), w(0x8a),\ |
58 | | w(0x70), w(0x3e), w(0xb5), w(0x66), w(0x48), w(0x03), w(0xf6), w(0x0e),\ |
59 | | w(0x61), w(0x35), w(0x57), w(0xb9), w(0x86), w(0xc1), w(0x1d), w(0x9e),\ |
60 | | w(0xe1), w(0xf8), w(0x98), w(0x11), w(0x69), w(0xd9), w(0x8e), w(0x94),\ |
61 | | w(0x9b), w(0x1e), w(0x87), w(0xe9), w(0xce), w(0x55), w(0x28), w(0xdf),\ |
62 | | w(0x8c), w(0xa1), w(0x89), w(0x0d), w(0xbf), w(0xe6), w(0x42), w(0x68),\ |
63 | | w(0x41), w(0x99), w(0x2d), w(0x0f), w(0xb0), w(0x54), w(0xbb), w(0x16) } |
64 | | |
65 | | #define isb_data(w) {\ |
66 | | w(0x52), w(0x09), w(0x6a), w(0xd5), w(0x30), w(0x36), w(0xa5), w(0x38),\ |
67 | | w(0xbf), w(0x40), w(0xa3), w(0x9e), w(0x81), w(0xf3), w(0xd7), w(0xfb),\ |
68 | | w(0x7c), w(0xe3), w(0x39), w(0x82), w(0x9b), w(0x2f), w(0xff), w(0x87),\ |
69 | | w(0x34), w(0x8e), w(0x43), w(0x44), w(0xc4), w(0xde), w(0xe9), w(0xcb),\ |
70 | | w(0x54), w(0x7b), w(0x94), w(0x32), w(0xa6), w(0xc2), w(0x23), w(0x3d),\ |
71 | | w(0xee), w(0x4c), w(0x95), w(0x0b), w(0x42), w(0xfa), w(0xc3), w(0x4e),\ |
72 | | w(0x08), w(0x2e), w(0xa1), w(0x66), w(0x28), w(0xd9), w(0x24), w(0xb2),\ |
73 | | w(0x76), w(0x5b), w(0xa2), w(0x49), w(0x6d), w(0x8b), w(0xd1), w(0x25),\ |
74 | | w(0x72), w(0xf8), w(0xf6), w(0x64), w(0x86), w(0x68), w(0x98), w(0x16),\ |
75 | | w(0xd4), w(0xa4), w(0x5c), w(0xcc), w(0x5d), w(0x65), w(0xb6), w(0x92),\ |
76 | | w(0x6c), w(0x70), w(0x48), w(0x50), w(0xfd), w(0xed), w(0xb9), w(0xda),\ |
77 | | w(0x5e), w(0x15), w(0x46), w(0x57), w(0xa7), w(0x8d), w(0x9d), w(0x84),\ |
78 | | w(0x90), w(0xd8), w(0xab), w(0x00), w(0x8c), w(0xbc), w(0xd3), w(0x0a),\ |
79 | | w(0xf7), w(0xe4), w(0x58), w(0x05), w(0xb8), w(0xb3), w(0x45), w(0x06),\ |
80 | | w(0xd0), w(0x2c), w(0x1e), w(0x8f), w(0xca), w(0x3f), w(0x0f), w(0x02),\ |
81 | | w(0xc1), w(0xaf), w(0xbd), w(0x03), w(0x01), w(0x13), w(0x8a), w(0x6b),\ |
82 | | w(0x3a), w(0x91), w(0x11), w(0x41), w(0x4f), w(0x67), w(0xdc), w(0xea),\ |
83 | | w(0x97), w(0xf2), w(0xcf), w(0xce), w(0xf0), w(0xb4), w(0xe6), w(0x73),\ |
84 | | w(0x96), w(0xac), w(0x74), w(0x22), w(0xe7), w(0xad), w(0x35), w(0x85),\ |
85 | | w(0xe2), w(0xf9), w(0x37), w(0xe8), w(0x1c), w(0x75), w(0xdf), w(0x6e),\ |
86 | | w(0x47), w(0xf1), w(0x1a), w(0x71), w(0x1d), w(0x29), w(0xc5), w(0x89),\ |
87 | | w(0x6f), w(0xb7), w(0x62), w(0x0e), w(0xaa), w(0x18), w(0xbe), w(0x1b),\ |
88 | | w(0xfc), w(0x56), w(0x3e), w(0x4b), w(0xc6), w(0xd2), w(0x79), w(0x20),\ |
89 | | w(0x9a), w(0xdb), w(0xc0), w(0xfe), w(0x78), w(0xcd), w(0x5a), w(0xf4),\ |
90 | | w(0x1f), w(0xdd), w(0xa8), w(0x33), w(0x88), w(0x07), w(0xc7), w(0x31),\ |
91 | | w(0xb1), w(0x12), w(0x10), w(0x59), w(0x27), w(0x80), w(0xec), w(0x5f),\ |
92 | | w(0x60), w(0x51), w(0x7f), w(0xa9), w(0x19), w(0xb5), w(0x4a), w(0x0d),\ |
93 | | w(0x2d), w(0xe5), w(0x7a), w(0x9f), w(0x93), w(0xc9), w(0x9c), w(0xef),\ |
94 | | w(0xa0), w(0xe0), w(0x3b), w(0x4d), w(0xae), w(0x2a), w(0xf5), w(0xb0),\ |
95 | | w(0xc8), w(0xeb), w(0xbb), w(0x3c), w(0x83), w(0x53), w(0x99), w(0x61),\ |
96 | | w(0x17), w(0x2b), w(0x04), w(0x7e), w(0xba), w(0x77), w(0xd6), w(0x26),\ |
97 | | w(0xe1), w(0x69), w(0x14), w(0x63), w(0x55), w(0x21), w(0x0c), w(0x7d) } |
98 | | |
99 | | #define mm_data(w) {\ |
100 | | w(0x00), w(0x01), w(0x02), w(0x03), w(0x04), w(0x05), w(0x06), w(0x07),\ |
101 | | w(0x08), w(0x09), w(0x0a), w(0x0b), w(0x0c), w(0x0d), w(0x0e), w(0x0f),\ |
102 | | w(0x10), w(0x11), w(0x12), w(0x13), w(0x14), w(0x15), w(0x16), w(0x17),\ |
103 | | w(0x18), w(0x19), w(0x1a), w(0x1b), w(0x1c), w(0x1d), w(0x1e), w(0x1f),\ |
104 | | w(0x20), w(0x21), w(0x22), w(0x23), w(0x24), w(0x25), w(0x26), w(0x27),\ |
105 | | w(0x28), w(0x29), w(0x2a), w(0x2b), w(0x2c), w(0x2d), w(0x2e), w(0x2f),\ |
106 | | w(0x30), w(0x31), w(0x32), w(0x33), w(0x34), w(0x35), w(0x36), w(0x37),\ |
107 | | w(0x38), w(0x39), w(0x3a), w(0x3b), w(0x3c), w(0x3d), w(0x3e), w(0x3f),\ |
108 | | w(0x40), w(0x41), w(0x42), w(0x43), w(0x44), w(0x45), w(0x46), w(0x47),\ |
109 | | w(0x48), w(0x49), w(0x4a), w(0x4b), w(0x4c), w(0x4d), w(0x4e), w(0x4f),\ |
110 | | w(0x50), w(0x51), w(0x52), w(0x53), w(0x54), w(0x55), w(0x56), w(0x57),\ |
111 | | w(0x58), w(0x59), w(0x5a), w(0x5b), w(0x5c), w(0x5d), w(0x5e), w(0x5f),\ |
112 | | w(0x60), w(0x61), w(0x62), w(0x63), w(0x64), w(0x65), w(0x66), w(0x67),\ |
113 | | w(0x68), w(0x69), w(0x6a), w(0x6b), w(0x6c), w(0x6d), w(0x6e), w(0x6f),\ |
114 | | w(0x70), w(0x71), w(0x72), w(0x73), w(0x74), w(0x75), w(0x76), w(0x77),\ |
115 | | w(0x78), w(0x79), w(0x7a), w(0x7b), w(0x7c), w(0x7d), w(0x7e), w(0x7f),\ |
116 | | w(0x80), w(0x81), w(0x82), w(0x83), w(0x84), w(0x85), w(0x86), w(0x87),\ |
117 | | w(0x88), w(0x89), w(0x8a), w(0x8b), w(0x8c), w(0x8d), w(0x8e), w(0x8f),\ |
118 | | w(0x90), w(0x91), w(0x92), w(0x93), w(0x94), w(0x95), w(0x96), w(0x97),\ |
119 | | w(0x98), w(0x99), w(0x9a), w(0x9b), w(0x9c), w(0x9d), w(0x9e), w(0x9f),\ |
120 | | w(0xa0), w(0xa1), w(0xa2), w(0xa3), w(0xa4), w(0xa5), w(0xa6), w(0xa7),\ |
121 | | w(0xa8), w(0xa9), w(0xaa), w(0xab), w(0xac), w(0xad), w(0xae), w(0xaf),\ |
122 | | w(0xb0), w(0xb1), w(0xb2), w(0xb3), w(0xb4), w(0xb5), w(0xb6), w(0xb7),\ |
123 | | w(0xb8), w(0xb9), w(0xba), w(0xbb), w(0xbc), w(0xbd), w(0xbe), w(0xbf),\ |
124 | | w(0xc0), w(0xc1), w(0xc2), w(0xc3), w(0xc4), w(0xc5), w(0xc6), w(0xc7),\ |
125 | | w(0xc8), w(0xc9), w(0xca), w(0xcb), w(0xcc), w(0xcd), w(0xce), w(0xcf),\ |
126 | | w(0xd0), w(0xd1), w(0xd2), w(0xd3), w(0xd4), w(0xd5), w(0xd6), w(0xd7),\ |
127 | | w(0xd8), w(0xd9), w(0xda), w(0xdb), w(0xdc), w(0xdd), w(0xde), w(0xdf),\ |
128 | | w(0xe0), w(0xe1), w(0xe2), w(0xe3), w(0xe4), w(0xe5), w(0xe6), w(0xe7),\ |
129 | | w(0xe8), w(0xe9), w(0xea), w(0xeb), w(0xec), w(0xed), w(0xee), w(0xef),\ |
130 | | w(0xf0), w(0xf1), w(0xf2), w(0xf3), w(0xf4), w(0xf5), w(0xf6), w(0xf7),\ |
131 | | w(0xf8), w(0xf9), w(0xfa), w(0xfb), w(0xfc), w(0xfd), w(0xfe), w(0xff) } |
132 | | |
133 | | #define rc_data(w) {\ |
134 | | w(0x01), w(0x02), w(0x04), w(0x08), w(0x10),w(0x20), w(0x40), w(0x80),\ |
135 | | w(0x1b), w(0x36) } |
136 | | |
137 | | #define h0(x) (x) |
138 | | |
139 | | #define w0(p) bytes2word(p, 0, 0, 0) |
140 | | #define w1(p) bytes2word(0, p, 0, 0) |
141 | | #define w2(p) bytes2word(0, 0, p, 0) |
142 | | #define w3(p) bytes2word(0, 0, 0, p) |
143 | | |
144 | | #define u0(p) bytes2word(f2(p), p, p, f3(p)) |
145 | | #define u1(p) bytes2word(f3(p), f2(p), p, p) |
146 | | #define u2(p) bytes2word(p, f3(p), f2(p), p) |
147 | | #define u3(p) bytes2word(p, p, f3(p), f2(p)) |
148 | | |
149 | | #define v0(p) bytes2word(fe(p), f9(p), fd(p), fb(p)) |
150 | | #define v1(p) bytes2word(fb(p), fe(p), f9(p), fd(p)) |
151 | | #define v2(p) bytes2word(fd(p), fb(p), fe(p), f9(p)) |
152 | | #define v3(p) bytes2word(f9(p), fd(p), fb(p), fe(p)) |
153 | | |
154 | | #endif |
155 | | |
156 | | #if defined(STATIC_TABLES) || !defined(FF_TABLES) |
157 | | |
158 | | #define f2(x) ((x<<1) ^ (((x>>7) & 1) * WPOLY)) |
159 | | #define f4(x) ((x<<2) ^ (((x>>6) & 1) * WPOLY) ^ (((x>>6) & 2) * WPOLY)) |
160 | | #define f8(x) ((x<<3) ^ (((x>>5) & 1) * WPOLY) ^ (((x>>5) & 2) * WPOLY) \ |
161 | | ^ (((x>>5) & 4) * WPOLY)) |
162 | | #define f3(x) (f2(x) ^ x) |
163 | | #define f9(x) (f8(x) ^ x) |
164 | | #define fb(x) (f8(x) ^ f2(x) ^ x) |
165 | | #define fd(x) (f8(x) ^ f4(x) ^ x) |
166 | | #define fe(x) (f8(x) ^ f4(x) ^ f2(x)) |
167 | | |
168 | | #else |
169 | | |
170 | | #define f2(x) ((x) ? pow[log[x] + 0x19] : 0) |
171 | | #define f3(x) ((x) ? pow[log[x] + 0x01] : 0) |
172 | | #define f9(x) ((x) ? pow[log[x] + 0xc7] : 0) |
173 | | #define fb(x) ((x) ? pow[log[x] + 0x68] : 0) |
174 | | #define fd(x) ((x) ? pow[log[x] + 0xee] : 0) |
175 | | #define fe(x) ((x) ? pow[log[x] + 0xdf] : 0) |
176 | | |
177 | | #endif |
178 | | |
179 | | #include "aestab.h" |
180 | | |
181 | | #if defined(__cplusplus) |
182 | | extern "C" |
183 | | { |
184 | | #endif |
185 | | |
186 | | #if defined(STATIC_TABLES) |
187 | | |
188 | | /* implemented in case of wrong call for fixed tables */ |
189 | | |
190 | | AES_RETURN aes_init(void) |
191 | 0 | { |
192 | | return EXIT_SUCCESS; |
193 | 0 | } |
194 | | |
195 | | #else /* Generate the tables for the dynamic table option */ |
196 | | |
197 | | #if defined(FF_TABLES) |
198 | | |
199 | | #define gf_inv(x) ((x) ? pow[ 255 - log[x]] : 0) |
200 | | |
201 | | #else |
202 | | |
203 | | /* It will generally be sensible to use tables to compute finite |
204 | | field multiplies and inverses but where memory is scarse this |
205 | | code might sometimes be better. But it only has effect during |
206 | | initialisation so its pretty unimportant in overall terms. |
207 | | */ |
208 | | |
209 | | /* return 2 ^ (n - 1) where n is the bit number of the highest bit |
210 | | set in x with x in the range 1 < x < 0x00000200. This form is |
211 | | used so that locals within fi can be bytes rather than words |
212 | | */ |
213 | | |
214 | | static uint8_t hibit(const uint32_t x) |
215 | | { uint8_t r = (uint8_t)((x >> 1) | (x >> 2)); |
216 | | |
217 | | r |= (r >> 2); |
218 | | r |= (r >> 4); |
219 | | return (r + 1) >> 1; |
220 | | } |
221 | | |
222 | | /* return the inverse of the finite field element x */ |
223 | | |
224 | | static uint8_t gf_inv(const uint8_t x) |
225 | | { uint8_t p1 = x, p2 = BPOLY, n1 = hibit(x), n2 = 0x80, v1 = 1, v2 = 0; |
226 | | |
227 | | if(x < 2) |
228 | | return x; |
229 | | |
230 | | for( ; ; ) |
231 | | { |
232 | | if(n1) |
233 | | while(n2 >= n1) /* divide polynomial p2 by p1 */ |
234 | | { |
235 | | n2 /= n1; /* shift smaller polynomial left */ |
236 | | p2 ^= (p1 * n2) & 0xff; /* and remove from larger one */ |
237 | | v2 ^= v1 * n2; /* shift accumulated value and */ |
238 | | n2 = hibit(p2); /* add into result */ |
239 | | } |
240 | | else |
241 | | return v1; |
242 | | |
243 | | if(n2) /* repeat with values swapped */ |
244 | | while(n1 >= n2) |
245 | | { |
246 | | n1 /= n2; |
247 | | p1 ^= p2 * n1; |
248 | | v1 ^= v2 * n1; |
249 | | n1 = hibit(p1); |
250 | | } |
251 | | else |
252 | | return v2; |
253 | | } |
254 | | } |
255 | | |
256 | | #endif |
257 | | |
258 | | /* The forward and inverse affine transformations used in the S-box */ |
259 | | uint8_t fwd_affine(const uint8_t x) |
260 | | { uint32_t w = x; |
261 | | w ^= (w << 1) ^ (w << 2) ^ (w << 3) ^ (w << 4); |
262 | | return 0x63 ^ ((w ^ (w >> 8)) & 0xff); |
263 | | } |
264 | | |
265 | | uint8_t inv_affine(const uint8_t x) |
266 | | { uint32_t w = x; |
267 | | w = (w << 1) ^ (w << 3) ^ (w << 6); |
268 | | return 0x05 ^ ((w ^ (w >> 8)) & 0xff); |
269 | | } |
270 | | |
271 | | static int init = 0; |
272 | | |
273 | | AES_RETURN aes_init(void) |
274 | | { uint32_t i, w; |
275 | | |
276 | | #if defined(FF_TABLES) |
277 | | |
278 | | uint8_t pow[512], log[256]; |
279 | | |
280 | | if(init) |
281 | | return EXIT_SUCCESS; |
282 | | /* log and power tables for GF(2^8) finite field with |
283 | | WPOLY as modular polynomial - the simplest primitive |
284 | | root is 0x03, used here to generate the tables |
285 | | */ |
286 | | |
287 | | i = 0; w = 1; |
288 | | do |
289 | | { |
290 | | pow[i] = (uint8_t)w; |
291 | | pow[i + 255] = (uint8_t)w; |
292 | | log[w] = (uint8_t)i++; |
293 | | w ^= (w << 1) ^ (w & 0x80 ? WPOLY : 0); |
294 | | } |
295 | | while (w != 1); |
296 | | |
297 | | #else |
298 | | if(init) |
299 | | return EXIT_SUCCESS; |
300 | | #endif |
301 | | |
302 | | for(i = 0, w = 1; i < RC_LENGTH; ++i) |
303 | | { |
304 | | t_set(r,c)[i] = bytes2word(w, 0, 0, 0); |
305 | | w = f2(w); |
306 | | } |
307 | | |
308 | | for(i = 0; i < 256; ++i) |
309 | | { uint8_t b; |
310 | | |
311 | | b = fwd_affine(gf_inv((uint8_t)i)); |
312 | | w = bytes2word(f2(b), b, b, f3(b)); |
313 | | |
314 | | #if defined( SBX_SET ) |
315 | | t_set(s,box)[i] = b; |
316 | | #endif |
317 | | |
318 | | #if defined( FT1_SET ) /* tables for a normal encryption round */ |
319 | | t_set(f,n)[i] = w; |
320 | | #endif |
321 | | #if defined( FT4_SET ) |
322 | | t_set(f,n)[0][i] = w; |
323 | | t_set(f,n)[1][i] = upr(w,1); |
324 | | t_set(f,n)[2][i] = upr(w,2); |
325 | | t_set(f,n)[3][i] = upr(w,3); |
326 | | #endif |
327 | | w = bytes2word(b, 0, 0, 0); |
328 | | |
329 | | #if defined( FL1_SET ) /* tables for last encryption round (may also */ |
330 | | t_set(f,l)[i] = w; /* be used in the key schedule) */ |
331 | | #endif |
332 | | #if defined( FL4_SET ) |
333 | | t_set(f,l)[0][i] = w; |
334 | | t_set(f,l)[1][i] = upr(w,1); |
335 | | t_set(f,l)[2][i] = upr(w,2); |
336 | | t_set(f,l)[3][i] = upr(w,3); |
337 | | #endif |
338 | | |
339 | | #if defined( LS1_SET ) /* table for key schedule if t_set(f,l) above is*/ |
340 | | t_set(l,s)[i] = w; /* not of the required form */ |
341 | | #endif |
342 | | #if defined( LS4_SET ) |
343 | | t_set(l,s)[0][i] = w; |
344 | | t_set(l,s)[1][i] = upr(w,1); |
345 | | t_set(l,s)[2][i] = upr(w,2); |
346 | | t_set(l,s)[3][i] = upr(w,3); |
347 | | #endif |
348 | | |
349 | | b = gf_inv(inv_affine((uint8_t)i)); |
350 | | w = bytes2word(fe(b), f9(b), fd(b), fb(b)); |
351 | | |
352 | | #if defined( IM1_SET ) /* tables for the inverse mix column operation */ |
353 | | t_set(i,m)[b] = w; |
354 | | #endif |
355 | | #if defined( IM4_SET ) |
356 | | t_set(i,m)[0][b] = w; |
357 | | t_set(i,m)[1][b] = upr(w,1); |
358 | | t_set(i,m)[2][b] = upr(w,2); |
359 | | t_set(i,m)[3][b] = upr(w,3); |
360 | | #endif |
361 | | |
362 | | #if defined( ISB_SET ) |
363 | | t_set(i,box)[i] = b; |
364 | | #endif |
365 | | #if defined( IT1_SET ) /* tables for a normal decryption round */ |
366 | | t_set(i,n)[i] = w; |
367 | | #endif |
368 | | #if defined( IT4_SET ) |
369 | | t_set(i,n)[0][i] = w; |
370 | | t_set(i,n)[1][i] = upr(w,1); |
371 | | t_set(i,n)[2][i] = upr(w,2); |
372 | | t_set(i,n)[3][i] = upr(w,3); |
373 | | #endif |
374 | | w = bytes2word(b, 0, 0, 0); |
375 | | #if defined( IL1_SET ) /* tables for last decryption round */ |
376 | | t_set(i,l)[i] = w; |
377 | | #endif |
378 | | #if defined( IL4_SET ) |
379 | | t_set(i,l)[0][i] = w; |
380 | | t_set(i,l)[1][i] = upr(w,1); |
381 | | t_set(i,l)[2][i] = upr(w,2); |
382 | | t_set(i,l)[3][i] = upr(w,3); |
383 | | #endif |
384 | | } |
385 | | init = 1; |
386 | | return EXIT_SUCCESS; |
387 | | } |
388 | | |
389 | | /* |
390 | | Automatic code initialisation (suggested by by Henrik S. Gaßmann) |
391 | | based on code provided by Joe Lowe and placed in the public domain at: |
392 | | http://stackoverflow.com/questions/1113409/attribute-constructor-equivalent-in-vc |
393 | | */ |
394 | | |
395 | | #ifdef _MSC_VER |
396 | | |
397 | | #pragma section(".CRT$XCU", read) |
398 | | |
399 | | __declspec(allocate(".CRT$XCU")) void (__cdecl *aes_startup)(void) = aes_init; |
400 | | |
401 | | #elif defined(__GNUC__) |
402 | | |
403 | | static void aes_startup(void) __attribute__((constructor)); |
404 | | |
405 | | static void aes_startup(void) |
406 | | { |
407 | | aes_init(); |
408 | | } |
409 | | |
410 | | #else |
411 | | |
412 | | #pragma message( "dynamic tables must be initialised manually on your system" ) |
413 | | |
414 | | #endif |
415 | | |
416 | | #endif |
417 | | |
418 | | #if defined(__cplusplus) |
419 | | } |
420 | | #endif |
421 | | |
422 | | #else /* K5_BUILTIN_AES */ |
423 | | |
424 | | /* Include aestab.h for proper dependency generation, but without defining the |
425 | | * table objects. */ |
426 | | #undef DO_TABLES |
427 | | #include "aestab.h" |
428 | | |
429 | | #endif |