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| 1 /* |
| 2 * (C) Copyright 2010 |
| 3 * NVIDIA Corporation <www.nvidia.com> |
| 4 * |
| 5 * See file CREDITS for list of people who contributed to this |
| 6 * project. |
| 7 * |
| 8 * This program is free software; you can redistribute it and/or |
| 9 * modify it under the terms of the GNU General Public License as |
| 10 * published by the Free Software Foundation; either version 2 of |
| 11 * the License, or (at your option) any later version. |
| 12 * |
| 13 * This program is distributed in the hope that it will be useful, |
| 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 * GNU General Public License for more details. |
| 17 * |
| 18 * You should have received a copy of the GNU General Public License |
| 19 * along with this program; if not, write to the Free Software |
| 20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, |
| 21 * MA 02111-1307 USA |
| 22 */ |
| 23 |
| 24 /* advanced encryption standard |
| 25 * author: karl malbrain, malbrain@yahoo.com |
| 26 */ |
| 27 |
| 28 /* |
| 29 This work, including the source code, documentation |
| 30 and related data, is placed into the public domain. |
| 31 |
| 32 The orginal author is Karl Malbrain. |
| 33 |
| 34 THIS SOFTWARE IS PROVIDED AS-IS WITHOUT WARRANTY |
| 35 OF ANY KIND, NOT EVEN THE IMPLIED WARRANTY OF |
| 36 MERCHANTABILITY. THE AUTHOR OF THIS SOFTWARE, |
| 37 ASSUMES _NO_ RESPONSIBILITY FOR ANY CONSEQUENCE |
| 38 RESULTING FROM THE USE, MODIFICATION, OR |
| 39 REDISTRIBUTION OF THIS SOFTWARE. |
| 40 */ |
| 41 |
| 42 /* |
| 43 * Modifications by NVIDIA: |
| 44 * - Created nvaes_ref.h header. |
| 45 * - Replaced type definitions with NVIDIA standard types. |
| 46 * - Removed unneeded code that turns this source file into an executable. |
| 47 * - Created function prototypes for some of the functions. |
| 48 * - Reformatted the code to conform to coding conventions. |
| 49 */ |
| 50 |
| 51 #include <common.h> |
| 52 #include "nvaes_ref.h" |
| 53 |
| 54 static void shift_rows (NvU8 *state); |
| 55 static void inv_shift_rows (NvU8 *state); |
| 56 static void mix_sub_columns (NvU8 *state); |
| 57 static void inv_mix_sub_columns(NvU8 *state); |
| 58 static void add_round_key (NvU32 *state, NvU32 *key); |
| 59 |
| 60 static NvU8 s_Sbox[256] = |
| 61 { /* forward s-box */ |
| 62 0x63, 0x7c, 0x77, 0x7b, 0xf2, 0x6b, 0x6f, 0xc5, |
| 63 0x30, 0x01, 0x67, 0x2b, 0xfe, 0xd7, 0xab, 0x76, |
| 64 0xca, 0x82, 0xc9, 0x7d, 0xfa, 0x59, 0x47, 0xf0, |
| 65 0xad, 0xd4, 0xa2, 0xaf, 0x9c, 0xa4, 0x72, 0xc0, |
| 66 0xb7, 0xfd, 0x93, 0x26, 0x36, 0x3f, 0xf7, 0xcc, |
| 67 0x34, 0xa5, 0xe5, 0xf1, 0x71, 0xd8, 0x31, 0x15, |
| 68 0x04, 0xc7, 0x23, 0xc3, 0x18, 0x96, 0x05, 0x9a, |
| 69 0x07, 0x12, 0x80, 0xe2, 0xeb, 0x27, 0xb2, 0x75, |
| 70 0x09, 0x83, 0x2c, 0x1a, 0x1b, 0x6e, 0x5a, 0xa0, |
| 71 0x52, 0x3b, 0xd6, 0xb3, 0x29, 0xe3, 0x2f, 0x84, |
| 72 0x53, 0xd1, 0x00, 0xed, 0x20, 0xfc, 0xb1, 0x5b, |
| 73 0x6a, 0xcb, 0xbe, 0x39, 0x4a, 0x4c, 0x58, 0xcf, |
| 74 0xd0, 0xef, 0xaa, 0xfb, 0x43, 0x4d, 0x33, 0x85, |
| 75 0x45, 0xf9, 0x02, 0x7f, 0x50, 0x3c, 0x9f, 0xa8, |
| 76 0x51, 0xa3, 0x40, 0x8f, 0x92, 0x9d, 0x38, 0xf5, |
| 77 0xbc, 0xb6, 0xda, 0x21, 0x10, 0xff, 0xf3, 0xd2, |
| 78 0xcd, 0x0c, 0x13, 0xec, 0x5f, 0x97, 0x44, 0x17, |
| 79 0xc4, 0xa7, 0x7e, 0x3d, 0x64, 0x5d, 0x19, 0x73, |
| 80 0x60, 0x81, 0x4f, 0xdc, 0x22, 0x2a, 0x90, 0x88, |
| 81 0x46, 0xee, 0xb8, 0x14, 0xde, 0x5e, 0x0b, 0xdb, |
| 82 0xe0, 0x32, 0x3a, 0x0a, 0x49, 0x06, 0x24, 0x5c, |
| 83 0xc2, 0xd3, 0xac, 0x62, 0x91, 0x95, 0xe4, 0x79, |
| 84 0xe7, 0xc8, 0x37, 0x6d, 0x8d, 0xd5, 0x4e, 0xa9, |
| 85 0x6c, 0x56, 0xf4, 0xea, 0x65, 0x7a, 0xae, 0x08, |
| 86 0xba, 0x78, 0x25, 0x2e, 0x1c, 0xa6, 0xb4, 0xc6, |
| 87 0xe8, 0xdd, 0x74, 0x1f, 0x4b, 0xbd, 0x8b, 0x8a, |
| 88 0x70, 0x3e, 0xb5, 0x66, 0x48, 0x03, 0xf6, 0x0e, |
| 89 0x61, 0x35, 0x57, 0xb9, 0x86, 0xc1, 0x1d, 0x9e, |
| 90 0xe1, 0xf8, 0x98, 0x11, 0x69, 0xd9, 0x8e, 0x94, |
| 91 0x9b, 0x1e, 0x87, 0xe9, 0xce, 0x55, 0x28, 0xdf, |
| 92 0x8c, 0xa1, 0x89, 0x0d, 0xbf, 0xe6, 0x42, 0x68, |
| 93 0x41, 0x99, 0x2d, 0x0f, 0xb0, 0x54, 0xbb, 0x16 |
| 94 }; |
| 95 |
| 96 static NvU8 s_InvSbox[256] = |
| 97 { /* inverse s-box */ |
| 98 0x52, 0x09, 0x6a, 0xd5, 0x30, 0x36, 0xa5, 0x38, |
| 99 0xbf, 0x40, 0xa3, 0x9e, 0x81, 0xf3, 0xd7, 0xfb, |
| 100 0x7c, 0xe3, 0x39, 0x82, 0x9b, 0x2f, 0xff, 0x87, |
| 101 0x34, 0x8e, 0x43, 0x44, 0xc4, 0xde, 0xe9, 0xcb, |
| 102 0x54, 0x7b, 0x94, 0x32, 0xa6, 0xc2, 0x23, 0x3d, |
| 103 0xee, 0x4c, 0x95, 0x0b, 0x42, 0xfa, 0xc3, 0x4e, |
| 104 0x08, 0x2e, 0xa1, 0x66, 0x28, 0xd9, 0x24, 0xb2, |
| 105 0x76, 0x5b, 0xa2, 0x49, 0x6d, 0x8b, 0xd1, 0x25, |
| 106 0x72, 0xf8, 0xf6, 0x64, 0x86, 0x68, 0x98, 0x16, |
| 107 0xd4, 0xa4, 0x5c, 0xcc, 0x5d, 0x65, 0xb6, 0x92, |
| 108 0x6c, 0x70, 0x48, 0x50, 0xfd, 0xed, 0xb9, 0xda, |
| 109 0x5e, 0x15, 0x46, 0x57, 0xa7, 0x8d, 0x9d, 0x84, |
| 110 0x90, 0xd8, 0xab, 0x00, 0x8c, 0xbc, 0xd3, 0x0a, |
| 111 0xf7, 0xe4, 0x58, 0x05, 0xb8, 0xb3, 0x45, 0x06, |
| 112 0xd0, 0x2c, 0x1e, 0x8f, 0xca, 0x3f, 0x0f, 0x02, |
| 113 0xc1, 0xaf, 0xbd, 0x03, 0x01, 0x13, 0x8a, 0x6b, |
| 114 0x3a, 0x91, 0x11, 0x41, 0x4f, 0x67, 0xdc, 0xea, |
| 115 0x97, 0xf2, 0xcf, 0xce, 0xf0, 0xb4, 0xe6, 0x73, |
| 116 0x96, 0xac, 0x74, 0x22, 0xe7, 0xad, 0x35, 0x85, |
| 117 0xe2, 0xf9, 0x37, 0xe8, 0x1c, 0x75, 0xdf, 0x6e, |
| 118 0x47, 0xf1, 0x1a, 0x71, 0x1d, 0x29, 0xc5, 0x89, |
| 119 0x6f, 0xb7, 0x62, 0x0e, 0xaa, 0x18, 0xbe, 0x1b, |
| 120 0xfc, 0x56, 0x3e, 0x4b, 0xc6, 0xd2, 0x79, 0x20, |
| 121 0x9a, 0xdb, 0xc0, 0xfe, 0x78, 0xcd, 0x5a, 0xf4, |
| 122 0x1f, 0xdd, 0xa8, 0x33, 0x88, 0x07, 0xc7, 0x31, |
| 123 0xb1, 0x12, 0x10, 0x59, 0x27, 0x80, 0xec, 0x5f, |
| 124 0x60, 0x51, 0x7f, 0xa9, 0x19, 0xb5, 0x4a, 0x0d, |
| 125 0x2d, 0xe5, 0x7a, 0x9f, 0x93, 0xc9, 0x9c, 0xef, |
| 126 0xa0, 0xe0, 0x3b, 0x4d, 0xae, 0x2a, 0xf5, 0xb0, |
| 127 0xc8, 0xeb, 0xbb, 0x3c, 0x83, 0x53, 0x99, 0x61, |
| 128 0x17, 0x2b, 0x04, 0x7e, 0xba, 0x77, 0xd6, 0x26, |
| 129 0xe1, 0x69, 0x14, 0x63, 0x55, 0x21, 0x0c, 0x7d |
| 130 }; |
| 131 |
| 132 /* combined Xtimes2[Sbox[]] */ |
| 133 static NvU8 s_Xtime2Sbox[256] = |
| 134 { |
| 135 0xc6, 0xf8, 0xee, 0xf6, 0xff, 0xd6, 0xde, 0x91, |
| 136 0x60, 0x02, 0xce, 0x56, 0xe7, 0xb5, 0x4d, 0xec, |
| 137 0x8f, 0x1f, 0x89, 0xfa, 0xef, 0xb2, 0x8e, 0xfb, |
| 138 0x41, 0xb3, 0x5f, 0x45, 0x23, 0x53, 0xe4, 0x9b, |
| 139 0x75, 0xe1, 0x3d, 0x4c, 0x6c, 0x7e, 0xf5, 0x83, |
| 140 0x68, 0x51, 0xd1, 0xf9, 0xe2, 0xab, 0x62, 0x2a, |
| 141 0x08, 0x95, 0x46, 0x9d, 0x30, 0x37, 0x0a, 0x2f, |
| 142 0x0e, 0x24, 0x1b, 0xdf, 0xcd, 0x4e, 0x7f, 0xea, |
| 143 0x12, 0x1d, 0x58, 0x34, 0x36, 0xdc, 0xb4, 0x5b, |
| 144 0xa4, 0x76, 0xb7, 0x7d, 0x52, 0xdd, 0x5e, 0x13, |
| 145 0xa6, 0xb9, 0x00, 0xc1, 0x40, 0xe3, 0x79, 0xb6, |
| 146 0xd4, 0x8d, 0x67, 0x72, 0x94, 0x98, 0xb0, 0x85, |
| 147 0xbb, 0xc5, 0x4f, 0xed, 0x86, 0x9a, 0x66, 0x11, |
| 148 0x8a, 0xe9, 0x04, 0xfe, 0xa0, 0x78, 0x25, 0x4b, |
| 149 0xa2, 0x5d, 0x80, 0x05, 0x3f, 0x21, 0x70, 0xf1, |
| 150 0x63, 0x77, 0xaf, 0x42, 0x20, 0xe5, 0xfd, 0xbf, |
| 151 0x81, 0x18, 0x26, 0xc3, 0xbe, 0x35, 0x88, 0x2e, |
| 152 0x93, 0x55, 0xfc, 0x7a, 0xc8, 0xba, 0x32, 0xe6, |
| 153 0xc0, 0x19, 0x9e, 0xa3, 0x44, 0x54, 0x3b, 0x0b, |
| 154 0x8c, 0xc7, 0x6b, 0x28, 0xa7, 0xbc, 0x16, 0xad, |
| 155 0xdb, 0x64, 0x74, 0x14, 0x92, 0x0c, 0x48, 0xb8, |
| 156 0x9f, 0xbd, 0x43, 0xc4, 0x39, 0x31, 0xd3, 0xf2, |
| 157 0xd5, 0x8b, 0x6e, 0xda, 0x01, 0xb1, 0x9c, 0x49, |
| 158 0xd8, 0xac, 0xf3, 0xcf, 0xca, 0xf4, 0x47, 0x10, |
| 159 0x6f, 0xf0, 0x4a, 0x5c, 0x38, 0x57, 0x73, 0x97, |
| 160 0xcb, 0xa1, 0xe8, 0x3e, 0x96, 0x61, 0x0d, 0x0f, |
| 161 0xe0, 0x7c, 0x71, 0xcc, 0x90, 0x06, 0xf7, 0x1c, |
| 162 0xc2, 0x6a, 0xae, 0x69, 0x17, 0x99, 0x3a, 0x27, |
| 163 0xd9, 0xeb, 0x2b, 0x22, 0xd2, 0xa9, 0x07, 0x33, |
| 164 0x2d, 0x3c, 0x15, 0xc9, 0x87, 0xaa, 0x50, 0xa5, |
| 165 0x03, 0x59, 0x09, 0x1a, 0x65, 0xd7, 0x84, 0xd0, |
| 166 0x82, 0x29, 0x5a, 0x1e, 0x7b, 0xa8, 0x6d, 0x2c |
| 167 }; |
| 168 |
| 169 /* combined Xtimes3[Sbox[]] */ |
| 170 static NvU8 s_Xtime3Sbox[256] = |
| 171 { |
| 172 0xa5, 0x84, 0x99, 0x8d, 0x0d, 0xbd, 0xb1, 0x54, |
| 173 0x50, 0x03, 0xa9, 0x7d, 0x19, 0x62, 0xe6, 0x9a, |
| 174 0x45, 0x9d, 0x40, 0x87, 0x15, 0xeb, 0xc9, 0x0b, |
| 175 0xec, 0x67, 0xfd, 0xea, 0xbf, 0xf7, 0x96, 0x5b, |
| 176 0xc2, 0x1c, 0xae, 0x6a, 0x5a, 0x41, 0x02, 0x4f, |
| 177 0x5c, 0xf4, 0x34, 0x08, 0x93, 0x73, 0x53, 0x3f, |
| 178 0x0c, 0x52, 0x65, 0x5e, 0x28, 0xa1, 0x0f, 0xb5, |
| 179 0x09, 0x36, 0x9b, 0x3d, 0x26, 0x69, 0xcd, 0x9f, |
| 180 0x1b, 0x9e, 0x74, 0x2e, 0x2d, 0xb2, 0xee, 0xfb, |
| 181 0xf6, 0x4d, 0x61, 0xce, 0x7b, 0x3e, 0x71, 0x97, |
| 182 0xf5, 0x68, 0x00, 0x2c, 0x60, 0x1f, 0xc8, 0xed, |
| 183 0xbe, 0x46, 0xd9, 0x4b, 0xde, 0xd4, 0xe8, 0x4a, |
| 184 0x6b, 0x2a, 0xe5, 0x16, 0xc5, 0xd7, 0x55, 0x94, |
| 185 0xcf, 0x10, 0x06, 0x81, 0xf0, 0x44, 0xba, 0xe3, |
| 186 0xf3, 0xfe, 0xc0, 0x8a, 0xad, 0xbc, 0x48, 0x04, |
| 187 0xdf, 0xc1, 0x75, 0x63, 0x30, 0x1a, 0x0e, 0x6d, |
| 188 0x4c, 0x14, 0x35, 0x2f, 0xe1, 0xa2, 0xcc, 0x39, |
| 189 0x57, 0xf2, 0x82, 0x47, 0xac, 0xe7, 0x2b, 0x95, |
| 190 0xa0, 0x98, 0xd1, 0x7f, 0x66, 0x7e, 0xab, 0x83, |
| 191 0xca, 0x29, 0xd3, 0x3c, 0x79, 0xe2, 0x1d, 0x76, |
| 192 0x3b, 0x56, 0x4e, 0x1e, 0xdb, 0x0a, 0x6c, 0xe4, |
| 193 0x5d, 0x6e, 0xef, 0xa6, 0xa8, 0xa4, 0x37, 0x8b, |
| 194 0x32, 0x43, 0x59, 0xb7, 0x8c, 0x64, 0xd2, 0xe0, |
| 195 0xb4, 0xfa, 0x07, 0x25, 0xaf, 0x8e, 0xe9, 0x18, |
| 196 0xd5, 0x88, 0x6f, 0x72, 0x24, 0xf1, 0xc7, 0x51, |
| 197 0x23, 0x7c, 0x9c, 0x21, 0xdd, 0xdc, 0x86, 0x85, |
| 198 0x90, 0x42, 0xc4, 0xaa, 0xd8, 0x05, 0x01, 0x12, |
| 199 0xa3, 0x5f, 0xf9, 0xd0, 0x91, 0x58, 0x27, 0xb9, |
| 200 0x38, 0x13, 0xb3, 0x33, 0xbb, 0x70, 0x89, 0xa7, |
| 201 0xb6, 0x22, 0x92, 0x20, 0x49, 0xff, 0x78, 0x7a, |
| 202 0x8f, 0xf8, 0x80, 0x17, 0xda, 0x31, 0xc6, 0xb8, |
| 203 0xc3, 0xb0, 0x77, 0x11, 0xcb, 0xfc, 0xd6, 0x3a |
| 204 }; |
| 205 |
| 206 /* modular multiplication tables |
| 207 * based on: |
| 208 */ |
| 209 |
| 210 static NvU8 s_Xtime9[256] = |
| 211 { |
| 212 0x00, 0x09, 0x12, 0x1b, 0x24, 0x2d, 0x36, 0x3f, |
| 213 0x48, 0x41, 0x5a, 0x53, 0x6c, 0x65, 0x7e, 0x77, |
| 214 0x90, 0x99, 0x82, 0x8b, 0xb4, 0xbd, 0xa6, 0xaf, |
| 215 0xd8, 0xd1, 0xca, 0xc3, 0xfc, 0xf5, 0xee, 0xe7, |
| 216 0x3b, 0x32, 0x29, 0x20, 0x1f, 0x16, 0x0d, 0x04, |
| 217 0x73, 0x7a, 0x61, 0x68, 0x57, 0x5e, 0x45, 0x4c, |
| 218 0xab, 0xa2, 0xb9, 0xb0, 0x8f, 0x86, 0x9d, 0x94, |
| 219 0xe3, 0xea, 0xf1, 0xf8, 0xc7, 0xce, 0xd5, 0xdc, |
| 220 0x76, 0x7f, 0x64, 0x6d, 0x52, 0x5b, 0x40, 0x49, |
| 221 0x3e, 0x37, 0x2c, 0x25, 0x1a, 0x13, 0x08, 0x01, |
| 222 0xe6, 0xef, 0xf4, 0xfd, 0xc2, 0xcb, 0xd0, 0xd9, |
| 223 0xae, 0xa7, 0xbc, 0xb5, 0x8a, 0x83, 0x98, 0x91, |
| 224 0x4d, 0x44, 0x5f, 0x56, 0x69, 0x60, 0x7b, 0x72, |
| 225 0x05, 0x0c, 0x17, 0x1e, 0x21, 0x28, 0x33, 0x3a, |
| 226 0xdd, 0xd4, 0xcf, 0xc6, 0xf9, 0xf0, 0xeb, 0xe2, |
| 227 0x95, 0x9c, 0x87, 0x8e, 0xb1, 0xb8, 0xa3, 0xaa, |
| 228 0xec, 0xe5, 0xfe, 0xf7, 0xc8, 0xc1, 0xda, 0xd3, |
| 229 0xa4, 0xad, 0xb6, 0xbf, 0x80, 0x89, 0x92, 0x9b, |
| 230 0x7c, 0x75, 0x6e, 0x67, 0x58, 0x51, 0x4a, 0x43, |
| 231 0x34, 0x3d, 0x26, 0x2f, 0x10, 0x19, 0x02, 0x0b, |
| 232 0xd7, 0xde, 0xc5, 0xcc, 0xf3, 0xfa, 0xe1, 0xe8, |
| 233 0x9f, 0x96, 0x8d, 0x84, 0xbb, 0xb2, 0xa9, 0xa0, |
| 234 0x47, 0x4e, 0x55, 0x5c, 0x63, 0x6a, 0x71, 0x78, |
| 235 0x0f, 0x06, 0x1d, 0x14, 0x2b, 0x22, 0x39, 0x30, |
| 236 0x9a, 0x93, 0x88, 0x81, 0xbe, 0xb7, 0xac, 0xa5, |
| 237 0xd2, 0xdb, 0xc0, 0xc9, 0xf6, 0xff, 0xe4, 0xed, |
| 238 0x0a, 0x03, 0x18, 0x11, 0x2e, 0x27, 0x3c, 0x35, |
| 239 0x42, 0x4b, 0x50, 0x59, 0x66, 0x6f, 0x74, 0x7d, |
| 240 0xa1, 0xa8, 0xb3, 0xba, 0x85, 0x8c, 0x97, 0x9e, |
| 241 0xe9, 0xe0, 0xfb, 0xf2, 0xcd, 0xc4, 0xdf, 0xd6, |
| 242 0x31, 0x38, 0x23, 0x2a, 0x15, 0x1c, 0x07, 0x0e, |
| 243 0x79, 0x70, 0x6b, 0x62, 0x5d, 0x54, 0x4f, 0x46 |
| 244 }; |
| 245 |
| 246 static NvU8 s_XtimeB[256] = |
| 247 { |
| 248 0x00, 0x0b, 0x16, 0x1d, 0x2c, 0x27, 0x3a, 0x31, |
| 249 0x58, 0x53, 0x4e, 0x45, 0x74, 0x7f, 0x62, 0x69, |
| 250 0xb0, 0xbb, 0xa6, 0xad, 0x9c, 0x97, 0x8a, 0x81, |
| 251 0xe8, 0xe3, 0xfe, 0xf5, 0xc4, 0xcf, 0xd2, 0xd9, |
| 252 0x7b, 0x70, 0x6d, 0x66, 0x57, 0x5c, 0x41, 0x4a, |
| 253 0x23, 0x28, 0x35, 0x3e, 0x0f, 0x04, 0x19, 0x12, |
| 254 0xcb, 0xc0, 0xdd, 0xd6, 0xe7, 0xec, 0xf1, 0xfa, |
| 255 0x93, 0x98, 0x85, 0x8e, 0xbf, 0xb4, 0xa9, 0xa2, |
| 256 0xf6, 0xfd, 0xe0, 0xeb, 0xda, 0xd1, 0xcc, 0xc7, |
| 257 0xae, 0xa5, 0xb8, 0xb3, 0x82, 0x89, 0x94, 0x9f, |
| 258 0x46, 0x4d, 0x50, 0x5b, 0x6a, 0x61, 0x7c, 0x77, |
| 259 0x1e, 0x15, 0x08, 0x03, 0x32, 0x39, 0x24, 0x2f, |
| 260 0x8d, 0x86, 0x9b, 0x90, 0xa1, 0xaa, 0xb7, 0xbc, |
| 261 0xd5, 0xde, 0xc3, 0xc8, 0xf9, 0xf2, 0xef, 0xe4, |
| 262 0x3d, 0x36, 0x2b, 0x20, 0x11, 0x1a, 0x07, 0x0c, |
| 263 0x65, 0x6e, 0x73, 0x78, 0x49, 0x42, 0x5f, 0x54, |
| 264 0xf7, 0xfc, 0xe1, 0xea, 0xdb, 0xd0, 0xcd, 0xc6, |
| 265 0xaf, 0xa4, 0xb9, 0xb2, 0x83, 0x88, 0x95, 0x9e, |
| 266 0x47, 0x4c, 0x51, 0x5a, 0x6b, 0x60, 0x7d, 0x76, |
| 267 0x1f, 0x14, 0x09, 0x02, 0x33, 0x38, 0x25, 0x2e, |
| 268 0x8c, 0x87, 0x9a, 0x91, 0xa0, 0xab, 0xb6, 0xbd, |
| 269 0xd4, 0xdf, 0xc2, 0xc9, 0xf8, 0xf3, 0xee, 0xe5, |
| 270 0x3c, 0x37, 0x2a, 0x21, 0x10, 0x1b, 0x06, 0x0d, |
| 271 0x64, 0x6f, 0x72, 0x79, 0x48, 0x43, 0x5e, 0x55, |
| 272 0x01, 0x0a, 0x17, 0x1c, 0x2d, 0x26, 0x3b, 0x30, |
| 273 0x59, 0x52, 0x4f, 0x44, 0x75, 0x7e, 0x63, 0x68, |
| 274 0xb1, 0xba, 0xa7, 0xac, 0x9d, 0x96, 0x8b, 0x80, |
| 275 0xe9, 0xe2, 0xff, 0xf4, 0xc5, 0xce, 0xd3, 0xd8, |
| 276 0x7a, 0x71, 0x6c, 0x67, 0x56, 0x5d, 0x40, 0x4b, |
| 277 0x22, 0x29, 0x34, 0x3f, 0x0e, 0x05, 0x18, 0x13, |
| 278 0xca, 0xc1, 0xdc, 0xd7, 0xe6, 0xed, 0xf0, 0xfb, |
| 279 0x92, 0x99, 0x84, 0x8f, 0xbe, 0xb5, 0xa8, 0xa3 |
| 280 }; |
| 281 |
| 282 static NvU8 s_XtimeD[256] = |
| 283 { |
| 284 0x00, 0x0d, 0x1a, 0x17, 0x34, 0x39, 0x2e, 0x23, |
| 285 0x68, 0x65, 0x72, 0x7f, 0x5c, 0x51, 0x46, 0x4b, |
| 286 0xd0, 0xdd, 0xca, 0xc7, 0xe4, 0xe9, 0xfe, 0xf3, |
| 287 0xb8, 0xb5, 0xa2, 0xaf, 0x8c, 0x81, 0x96, 0x9b, |
| 288 0xbb, 0xb6, 0xa1, 0xac, 0x8f, 0x82, 0x95, 0x98, |
| 289 0xd3, 0xde, 0xc9, 0xc4, 0xe7, 0xea, 0xfd, 0xf0, |
| 290 0x6b, 0x66, 0x71, 0x7c, 0x5f, 0x52, 0x45, 0x48, |
| 291 0x03, 0x0e, 0x19, 0x14, 0x37, 0x3a, 0x2d, 0x20, |
| 292 0x6d, 0x60, 0x77, 0x7a, 0x59, 0x54, 0x43, 0x4e, |
| 293 0x05, 0x08, 0x1f, 0x12, 0x31, 0x3c, 0x2b, 0x26, |
| 294 0xbd, 0xb0, 0xa7, 0xaa, 0x89, 0x84, 0x93, 0x9e, |
| 295 0xd5, 0xd8, 0xcf, 0xc2, 0xe1, 0xec, 0xfb, 0xf6, |
| 296 0xd6, 0xdb, 0xcc, 0xc1, 0xe2, 0xef, 0xf8, 0xf5, |
| 297 0xbe, 0xb3, 0xa4, 0xa9, 0x8a, 0x87, 0x90, 0x9d, |
| 298 0x06, 0x0b, 0x1c, 0x11, 0x32, 0x3f, 0x28, 0x25, |
| 299 0x6e, 0x63, 0x74, 0x79, 0x5a, 0x57, 0x40, 0x4d, |
| 300 0xda, 0xd7, 0xc0, 0xcd, 0xee, 0xe3, 0xf4, 0xf9, |
| 301 0xb2, 0xbf, 0xa8, 0xa5, 0x86, 0x8b, 0x9c, 0x91, |
| 302 0x0a, 0x07, 0x10, 0x1d, 0x3e, 0x33, 0x24, 0x29, |
| 303 0x62, 0x6f, 0x78, 0x75, 0x56, 0x5b, 0x4c, 0x41, |
| 304 0x61, 0x6c, 0x7b, 0x76, 0x55, 0x58, 0x4f, 0x42, |
| 305 0x09, 0x04, 0x13, 0x1e, 0x3d, 0x30, 0x27, 0x2a, |
| 306 0xb1, 0xbc, 0xab, 0xa6, 0x85, 0x88, 0x9f, 0x92, |
| 307 0xd9, 0xd4, 0xc3, 0xce, 0xed, 0xe0, 0xf7, 0xfa, |
| 308 0xb7, 0xba, 0xad, 0xa0, 0x83, 0x8e, 0x99, 0x94, |
| 309 0xdf, 0xd2, 0xc5, 0xc8, 0xeb, 0xe6, 0xf1, 0xfc, |
| 310 0x67, 0x6a, 0x7d, 0x70, 0x53, 0x5e, 0x49, 0x44, |
| 311 0x0f, 0x02, 0x15, 0x18, 0x3b, 0x36, 0x21, 0x2c, |
| 312 0x0c, 0x01, 0x16, 0x1b, 0x38, 0x35, 0x22, 0x2f, |
| 313 0x64, 0x69, 0x7e, 0x73, 0x50, 0x5d, 0x4a, 0x47, |
| 314 0xdc, 0xd1, 0xc6, 0xcb, 0xe8, 0xe5, 0xf2, 0xff, |
| 315 0xb4, 0xb9, 0xae, 0xa3, 0x80, 0x8d, 0x9a, 0x97 |
| 316 }; |
| 317 |
| 318 static NvU8 s_XtimeE[256] = |
| 319 { |
| 320 0x00, 0x0e, 0x1c, 0x12, 0x38, 0x36, 0x24, 0x2a, |
| 321 0x70, 0x7e, 0x6c, 0x62, 0x48, 0x46, 0x54, 0x5a, |
| 322 0xe0, 0xee, 0xfc, 0xf2, 0xd8, 0xd6, 0xc4, 0xca, |
| 323 0x90, 0x9e, 0x8c, 0x82, 0xa8, 0xa6, 0xb4, 0xba, |
| 324 0xdb, 0xd5, 0xc7, 0xc9, 0xe3, 0xed, 0xff, 0xf1, |
| 325 0xab, 0xa5, 0xb7, 0xb9, 0x93, 0x9d, 0x8f, 0x81, |
| 326 0x3b, 0x35, 0x27, 0x29, 0x03, 0x0d, 0x1f, 0x11, |
| 327 0x4b, 0x45, 0x57, 0x59, 0x73, 0x7d, 0x6f, 0x61, |
| 328 0xad, 0xa3, 0xb1, 0xbf, 0x95, 0x9b, 0x89, 0x87, |
| 329 0xdd, 0xd3, 0xc1, 0xcf, 0xe5, 0xeb, 0xf9, 0xf7, |
| 330 0x4d, 0x43, 0x51, 0x5f, 0x75, 0x7b, 0x69, 0x67, |
| 331 0x3d, 0x33, 0x21, 0x2f, 0x05, 0x0b, 0x19, 0x17, |
| 332 0x76, 0x78, 0x6a, 0x64, 0x4e, 0x40, 0x52, 0x5c, |
| 333 0x06, 0x08, 0x1a, 0x14, 0x3e, 0x30, 0x22, 0x2c, |
| 334 0x96, 0x98, 0x8a, 0x84, 0xae, 0xa0, 0xb2, 0xbc, |
| 335 0xe6, 0xe8, 0xfa, 0xf4, 0xde, 0xd0, 0xc2, 0xcc, |
| 336 0x41, 0x4f, 0x5d, 0x53, 0x79, 0x77, 0x65, 0x6b, |
| 337 0x31, 0x3f, 0x2d, 0x23, 0x09, 0x07, 0x15, 0x1b, |
| 338 0xa1, 0xaf, 0xbd, 0xb3, 0x99, 0x97, 0x85, 0x8b, |
| 339 0xd1, 0xdf, 0xcd, 0xc3, 0xe9, 0xe7, 0xf5, 0xfb, |
| 340 0x9a, 0x94, 0x86, 0x88, 0xa2, 0xac, 0xbe, 0xb0, |
| 341 0xea, 0xe4, 0xf6, 0xf8, 0xd2, 0xdc, 0xce, 0xc0, |
| 342 0x7a, 0x74, 0x66, 0x68, 0x42, 0x4c, 0x5e, 0x50, |
| 343 0x0a, 0x04, 0x16, 0x18, 0x32, 0x3c, 0x2e, 0x20, |
| 344 0xec, 0xe2, 0xf0, 0xfe, 0xd4, 0xda, 0xc8, 0xc6, |
| 345 0x9c, 0x92, 0x80, 0x8e, 0xa4, 0xaa, 0xb8, 0xb6, |
| 346 0x0c, 0x02, 0x10, 0x1e, 0x34, 0x3a, 0x28, 0x26, |
| 347 0x7c, 0x72, 0x60, 0x6e, 0x44, 0x4a, 0x58, 0x56, |
| 348 0x37, 0x39, 0x2b, 0x25, 0x0f, 0x01, 0x13, 0x1d, |
| 349 0x47, 0x49, 0x5b, 0x55, 0x7f, 0x71, 0x63, 0x6d, |
| 350 0xd7, 0xd9, 0xcb, 0xc5, 0xef, 0xe1, 0xf3, 0xfd, |
| 351 0xa7, 0xa9, 0xbb, 0xb5, 0x9f, 0x91, 0x83, 0x8d |
| 352 }; |
| 353 |
| 354 /* exchanges columns in each of 4 rows |
| 355 * row0 - unchanged, row1- shifted left 1, |
| 356 * row2 - shifted left 2 and row3 - shifted left 3 |
| 357 */ |
| 358 void |
| 359 shift_rows(NvU8 *state) |
| 360 { |
| 361 NvU8 tmp; |
| 362 |
| 363 /* just substitute row 0 */ |
| 364 state[ 0] = s_Sbox[state[ 0]]; |
| 365 state[ 4] = s_Sbox[state[ 4]]; |
| 366 state[ 8] = s_Sbox[state[ 8]]; |
| 367 state[12] = s_Sbox[state[12]]; |
| 368 |
| 369 /* rotate row 1 */ |
| 370 tmp = s_Sbox[state[ 1]]; |
| 371 state[ 1] = s_Sbox[state[ 5]]; |
| 372 state[ 5] = s_Sbox[state[ 9]]; |
| 373 state[ 9] = s_Sbox[state[13]]; |
| 374 state[13] = tmp; |
| 375 |
| 376 /* rotate row 2 */ |
| 377 tmp = s_Sbox[state[ 2]]; |
| 378 state[ 2] = s_Sbox[state[10]]; |
| 379 state[10] = tmp; |
| 380 tmp = s_Sbox[state[ 6]]; |
| 381 state[ 6] = s_Sbox[state[14]]; |
| 382 state[14] = tmp; |
| 383 |
| 384 /* rotate row 3 */ |
| 385 tmp = s_Sbox[state[15]]; |
| 386 state[15] = s_Sbox[state[11]]; |
| 387 state[11] = s_Sbox[state[ 7]]; |
| 388 state[ 7] = s_Sbox[state[ 3]]; |
| 389 state[ 3] = tmp; |
| 390 } |
| 391 |
| 392 /* restores columns in each of 4 rows |
| 393 * row0 - unchanged, row1- shifted right 1, |
| 394 * row2 - shifted right 2 and row3 - shifted right 3 |
| 395 */ |
| 396 void |
| 397 inv_shift_rows(NvU8 *state) |
| 398 { |
| 399 NvU8 tmp; |
| 400 |
| 401 /* restore row 0 */ |
| 402 state[ 0] = s_InvSbox[state[ 0]]; |
| 403 state[ 4] = s_InvSbox[state[ 4]]; |
| 404 state[ 8] = s_InvSbox[state[ 8]]; |
| 405 state[12] = s_InvSbox[state[12]]; |
| 406 |
| 407 /* restore row 1 */ |
| 408 tmp = s_InvSbox[state[13]]; |
| 409 state[13] = s_InvSbox[state[ 9]]; |
| 410 state[ 9] = s_InvSbox[state[ 5]]; |
| 411 state[ 5] = s_InvSbox[state[ 1]]; |
| 412 state[ 1] = tmp; |
| 413 |
| 414 /* restore row 2 */ |
| 415 tmp = s_InvSbox[state[ 2]]; |
| 416 state[ 2] = s_InvSbox[state[10]]; |
| 417 state[10] = tmp; |
| 418 tmp = s_InvSbox[state[ 6]]; |
| 419 state[ 6] = s_InvSbox[state[14]]; |
| 420 state[14] = tmp; |
| 421 |
| 422 /* restore row 3 */ |
| 423 tmp = s_InvSbox[state[ 3]]; |
| 424 state[ 3] = s_InvSbox[state[ 7]]; |
| 425 state[ 7] = s_InvSbox[state[11]]; |
| 426 state[11] = s_InvSbox[state[15]]; |
| 427 state[15] = tmp; |
| 428 } |
| 429 |
| 430 /* recombine and mix each row in a column */ |
| 431 void |
| 432 mix_sub_columns(NvU8 *state) |
| 433 { |
| 434 NvU8 tmp[4 * NVAES_STATECOLS]; |
| 435 |
| 436 /* mixing column 0 */ |
| 437 tmp[ 0] = s_Xtime2Sbox[state[ 0]] ^ s_Xtime3Sbox[state[ 5]] ^ |
| 438 s_Sbox[state[10]] ^ s_Sbox[state[15]]; |
| 439 tmp[ 1] = s_Sbox[state[ 0]] ^ s_Xtime2Sbox[state[ 5]] ^ |
| 440 s_Xtime3Sbox[state[10]] ^ s_Sbox[state[15]]; |
| 441 tmp[ 2] = s_Sbox[state[ 0]] ^ s_Sbox[state[ 5]] ^ |
| 442 s_Xtime2Sbox[state[10]] ^ s_Xtime3Sbox[state[15]]; |
| 443 tmp[ 3] = s_Xtime3Sbox[state[ 0]] ^ s_Sbox[state[ 5]] ^ |
| 444 s_Sbox[state[10]] ^ s_Xtime2Sbox[state[15]]; |
| 445 |
| 446 /* mixing column 1 */ |
| 447 tmp[ 4] = s_Xtime2Sbox[state[ 4]] ^ s_Xtime3Sbox[state[ 9]] ^ |
| 448 s_Sbox[state[14]] ^ s_Sbox[state[ 3]]; |
| 449 tmp[ 5] = s_Sbox[state[ 4]] ^ s_Xtime2Sbox[state[ 9]] ^ |
| 450 s_Xtime3Sbox[state[14]] ^ s_Sbox[state[ 3]]; |
| 451 tmp[ 6] = s_Sbox[state[ 4]] ^ s_Sbox[state[ 9]] ^ |
| 452 s_Xtime2Sbox[state[14]] ^ s_Xtime3Sbox[state[ 3]]; |
| 453 tmp[ 7] = s_Xtime3Sbox[state[ 4]] ^ s_Sbox[state[ 9]] ^ |
| 454 s_Sbox[state[14]] ^ s_Xtime2Sbox[state[ 3]]; |
| 455 |
| 456 /* mixing column 2 */ |
| 457 tmp[ 8] = s_Xtime2Sbox[state[ 8]] ^ s_Xtime3Sbox[state[13]] ^ |
| 458 s_Sbox[state[ 2]] ^ s_Sbox[state[ 7]]; |
| 459 tmp[ 9] = s_Sbox[state[ 8]] ^ s_Xtime2Sbox[state[13]] ^ |
| 460 s_Xtime3Sbox[state[ 2]] ^ s_Sbox[state[ 7]]; |
| 461 tmp[10] = s_Sbox[state[ 8]] ^ s_Sbox[state[13]] ^ |
| 462 s_Xtime2Sbox[state[ 2]] ^ s_Xtime3Sbox[state[ 7]]; |
| 463 tmp[11] = s_Xtime3Sbox[state[ 8]] ^ s_Sbox[state[13]] ^ |
| 464 s_Sbox[state[ 2]] ^ s_Xtime2Sbox[state[ 7]]; |
| 465 |
| 466 /* mixing column 3 */ |
| 467 tmp[12] = s_Xtime2Sbox[state[12]] ^ s_Xtime3Sbox[state[ 1]] ^ |
| 468 s_Sbox[state[ 6]] ^ s_Sbox[state[11]]; |
| 469 tmp[13] = s_Sbox[state[12]] ^ s_Xtime2Sbox[state[ 1]] ^ |
| 470 s_Xtime3Sbox[state[ 6]] ^ s_Sbox[state[11]]; |
| 471 tmp[14] = s_Sbox[state[12]] ^ s_Sbox[state[ 1]] ^ |
| 472 s_Xtime2Sbox[state[ 6]] ^ s_Xtime3Sbox[state[11]]; |
| 473 tmp[15] = s_Xtime3Sbox[state[12]] ^ s_Sbox[state[ 1]] ^ |
| 474 s_Sbox[state[ 6]] ^ s_Xtime2Sbox[state[11]]; |
| 475 |
| 476 memcpy (state, tmp, sizeof(tmp)); |
| 477 } |
| 478 |
| 479 /* restore and un-mix each row in a column */ |
| 480 void inv_mix_sub_columns (NvU8 *state) |
| 481 { |
| 482 NvU8 tmp[4 * NVAES_STATECOLS]; |
| 483 int i; |
| 484 |
| 485 /* restore column 0 */ |
| 486 tmp[ 0] = s_XtimeE[state[ 0]] ^ s_XtimeB[state[ 1]] ^ |
| 487 s_XtimeD[state[ 2]] ^ s_Xtime9[state[ 3]]; |
| 488 tmp[ 5] = s_Xtime9[state[ 0]] ^ s_XtimeE[state[ 1]] ^ |
| 489 s_XtimeB[state[ 2]] ^ s_XtimeD[state[ 3]]; |
| 490 tmp[10] = s_XtimeD[state[ 0]] ^ s_Xtime9[state[ 1]] ^ |
| 491 s_XtimeE[state[ 2]] ^ s_XtimeB[state[ 3]]; |
| 492 tmp[15] = s_XtimeB[state[ 0]] ^ s_XtimeD[state[ 1]] ^ |
| 493 s_Xtime9[state[ 2]] ^ s_XtimeE[state[ 3]]; |
| 494 |
| 495 /* restore column 1 */ |
| 496 tmp[ 4] = s_XtimeE[state[ 4]] ^ s_XtimeB[state[ 5]] ^ |
| 497 s_XtimeD[state[ 6]] ^ s_Xtime9[state[ 7]]; |
| 498 tmp[ 9] = s_Xtime9[state[ 4]] ^ s_XtimeE[state[ 5]] ^ |
| 499 s_XtimeB[state[ 6]] ^ s_XtimeD[state[ 7]]; |
| 500 tmp[14] = s_XtimeD[state[ 4]] ^ s_Xtime9[state[ 5]] ^ |
| 501 s_XtimeE[state[ 6]] ^ s_XtimeB[state[ 7]]; |
| 502 tmp[ 3] = s_XtimeB[state[ 4]] ^ s_XtimeD[state[ 5]] ^ |
| 503 s_Xtime9[state[ 6]] ^ s_XtimeE[state[ 7]]; |
| 504 |
| 505 /* restore column 2 */ |
| 506 tmp[ 8] = s_XtimeE[state[ 8]] ^ s_XtimeB[state[ 9]] ^ |
| 507 s_XtimeD[state[10]] ^ s_Xtime9[state[11]]; |
| 508 tmp[13] = s_Xtime9[state[ 8]] ^ s_XtimeE[state[ 9]] ^ |
| 509 s_XtimeB[state[10]] ^ s_XtimeD[state[11]]; |
| 510 tmp[ 2] = s_XtimeD[state[ 8]] ^ s_Xtime9[state[ 9]] ^ |
| 511 s_XtimeE[state[10]] ^ s_XtimeB[state[11]]; |
| 512 tmp[ 7] = s_XtimeB[state[ 8]] ^ s_XtimeD[state[ 9]] ^ |
| 513 s_Xtime9[state[10]] ^ s_XtimeE[state[11]]; |
| 514 |
| 515 /* restore column 3 */ |
| 516 tmp[12] = s_XtimeE[state[12]] ^ s_XtimeB[state[13]] ^ |
| 517 s_XtimeD[state[14]] ^ s_Xtime9[state[15]]; |
| 518 tmp[ 1] = s_Xtime9[state[12]] ^ s_XtimeE[state[13]] ^ |
| 519 s_XtimeB[state[14]] ^ s_XtimeD[state[15]]; |
| 520 tmp[ 6] = s_XtimeD[state[12]] ^ s_Xtime9[state[13]] ^ |
| 521 s_XtimeE[state[14]] ^ s_XtimeB[state[15]]; |
| 522 tmp[11] = s_XtimeB[state[12]] ^ s_XtimeD[state[13]] ^ |
| 523 s_Xtime9[state[14]] ^ s_XtimeE[state[15]]; |
| 524 |
| 525 for (i=0; i < 4 * NVAES_STATECOLS; i++) |
| 526 state[i] = s_InvSbox[tmp[i]]; |
| 527 } |
| 528 |
| 529 /* encrypt/decrypt columns of the key |
| 530 * n.b. you can replace this with |
| 531 * byte-wise xor if you wish. |
| 532 */ |
| 533 |
| 534 void |
| 535 add_round_key(NvU32 *state, NvU32 *key) |
| 536 { |
| 537 int idx; |
| 538 |
| 539 for (idx = 0; idx < 4; idx++) |
| 540 state[idx] ^= key[idx]; |
| 541 } |
| 542 |
| 543 static NvU8 s_Rcon[11] = |
| 544 { |
| 545 0x00, 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36 |
| 546 }; |
| 547 |
| 548 /* produce NVAES_STATECOLS bytes for each round */ |
| 549 void |
| 550 nv_aes_expand_key(NvU8 *key, NvU8 *expkey) |
| 551 { |
| 552 NvU8 tmp0, tmp1, tmp2, tmp3, tmp4; |
| 553 NvU32 idx; |
| 554 |
| 555 memcpy(expkey, key, NVAES_KEYCOLS * 4); |
| 556 |
| 557 for (idx = NVAES_KEYCOLS; |
| 558 idx < NVAES_STATECOLS * (NVAES_ROUNDS + 1); |
| 559 idx++) { |
| 560 tmp0 = expkey[4*idx - 4]; |
| 561 tmp1 = expkey[4*idx - 3]; |
| 562 tmp2 = expkey[4*idx - 2]; |
| 563 tmp3 = expkey[4*idx - 1]; |
| 564 if (!(idx % NVAES_KEYCOLS)) { |
| 565 tmp4 = tmp3; |
| 566 tmp3 = s_Sbox[tmp0]; |
| 567 tmp0 = s_Sbox[tmp1] ^ s_Rcon[idx/NVAES_KEYCOLS]; |
| 568 tmp1 = s_Sbox[tmp2]; |
| 569 tmp2 = s_Sbox[tmp4]; |
| 570 } |
| 571 else if (NVAES_KEYCOLS > 6 && idx % NVAES_KEYCOLS == 4 ) { |
| 572 tmp0 = s_Sbox[tmp0]; |
| 573 tmp1 = s_Sbox[tmp1]; |
| 574 tmp2 = s_Sbox[tmp2]; |
| 575 tmp3 = s_Sbox[tmp3]; |
| 576 } |
| 577 |
| 578 expkey[4*idx+0] = expkey[4*idx - 4*NVAES_KEYCOLS + 0] ^ tmp0; |
| 579 expkey[4*idx+1] = expkey[4*idx - 4*NVAES_KEYCOLS + 1] ^ tmp1; |
| 580 expkey[4*idx+2] = expkey[4*idx - 4*NVAES_KEYCOLS + 2] ^ tmp2; |
| 581 expkey[4*idx+3] = expkey[4*idx - 4*NVAES_KEYCOLS + 3] ^ tmp3; |
| 582 } |
| 583 } |
| 584 |
| 585 /* encrypt one 128 bit block */ |
| 586 void |
| 587 nv_aes_encrypt(NvU8 *in, NvU8 *expkey, NvU8 *out) |
| 588 { |
| 589 NvU8 state[NVAES_STATECOLS * 4]; |
| 590 NvU32 round; |
| 591 |
| 592 memcpy(state, in, NVAES_STATECOLS * 4); |
| 593 add_round_key((NvU32 *)state, (NvU32 *)expkey); |
| 594 |
| 595 for (round = 1; round < NVAES_ROUNDS + 1; round++) { |
| 596 if( round < NVAES_ROUNDS ) |
| 597 mix_sub_columns (state); |
| 598 else |
| 599 shift_rows (state); |
| 600 |
| 601 add_round_key((NvU32 *)state, (NvU32 *)expkey + round * NVAES_ST
ATECOLS); |
| 602 } |
| 603 |
| 604 memcpy(out, state, sizeof(state)); |
| 605 } |
| 606 |
| 607 void |
| 608 nv_aes_decrypt(NvU8 *in, NvU8 *expkey, NvU8 *out) |
| 609 { |
| 610 NvU8 state[NVAES_STATECOLS * 4]; |
| 611 NvU32 round; |
| 612 |
| 613 memcpy(state, in, sizeof(state)); |
| 614 |
| 615 add_round_key((NvU32 *)state, |
| 616 (NvU32 *)expkey + NVAES_ROUNDS * NVAES_STATECOLS
); |
| 617 inv_shift_rows(state); |
| 618 |
| 619 for (round = NVAES_ROUNDS; round--; ) { |
| 620 add_round_key((NvU32 *)state, (NvU32 *)expkey + round * NVAES_ST
ATECOLS); |
| 621 if (round) |
| 622 inv_mix_sub_columns (state); |
| 623 } |
| 624 |
| 625 memcpy (out, state, sizeof(state)); |
| 626 } |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 4841001:
Tegra2: implement Warmboot code and lp0_vec (Closed)
Base URL: http://git.chromium.org/git/u-boot-next.git@chromeos-v2010.09