001: package ch.ethz.ssh2.crypto.cipher;
002:
003: /*
004: This file was shamelessly taken from the Bouncy Castle Crypto package.
005: Their licence file states the following:
006:
007: Copyright (c) 2000 - 2004 The Legion Of The Bouncy Castle
008: (http://www.bouncycastle.org)
009:
010: Permission is hereby granted, free of charge, to any person obtaining a copy
011: of this software and associated documentation files (the "Software"), to deal
012: in the Software without restriction, including without limitation the rights
013: to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
014: copies of the Software, and to permit persons to whom the Software is
015: furnished to do so, subject to the following conditions:
016:
017: The above copyright notice and this permission notice shall be included in
018: all copies or substantial portions of the Software.
019:
020: THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
021: IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
022: FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
023: AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
024: LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
025: OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
026: THE SOFTWARE.
027: */
028:
029: /**
030: * An implementation of the AES (Rijndael), from FIPS-197.
031: * <p>
032: * For further details see: <a
033: * href="http://csrc.nist.gov/encryption/aes/">http://csrc.nist.gov/encryption/aes/
034: * </a>.
035: *
036: * This implementation is based on optimizations from Dr. Brian Gladman's paper
037: * and C code at <a
038: * href="http://fp.gladman.plus.com/cryptography_technology/rijndael/">http://fp.gladman.plus.com/cryptography_technology/rijndael/
039: * </a>
040: *
041: * There are three levels of tradeoff of speed vs memory Because java has no
042: * preprocessor, they are written as three separate classes from which to choose
043: *
044: * The fastest uses 8Kbytes of static tables to precompute round calculations, 4
045: * 256 word tables for encryption and 4 for decryption.
046: *
047: * The middle performance version uses only one 256 word table for each, for a
048: * total of 2Kbytes, adding 12 rotate operations per round to compute the values
049: * contained in the other tables from the contents of the first
050: *
051: * The slowest version uses no static tables at all and computes the values in
052: * each round
053: * <p>
054: * This file contains the fast version with 8Kbytes of static tables for round
055: * precomputation
056: *
057: * @author See comments in the source file
058: * @version $Id: AES.java,v 1.4 2006/02/02 09:11:03 cplattne Exp $
059: */
060: public class AES implements BlockCipher {
061: // The S box
062: private static final byte[] S = { (byte) 99, (byte) 124,
063: (byte) 119, (byte) 123, (byte) 242, (byte) 107, (byte) 111,
064: (byte) 197, (byte) 48, (byte) 1, (byte) 103, (byte) 43,
065: (byte) 254, (byte) 215, (byte) 171, (byte) 118, (byte) 202,
066: (byte) 130, (byte) 201, (byte) 125, (byte) 250, (byte) 89,
067: (byte) 71, (byte) 240, (byte) 173, (byte) 212, (byte) 162,
068: (byte) 175, (byte) 156, (byte) 164, (byte) 114, (byte) 192,
069: (byte) 183, (byte) 253, (byte) 147, (byte) 38, (byte) 54,
070: (byte) 63, (byte) 247, (byte) 204, (byte) 52, (byte) 165,
071: (byte) 229, (byte) 241, (byte) 113, (byte) 216, (byte) 49,
072: (byte) 21, (byte) 4, (byte) 199, (byte) 35, (byte) 195,
073: (byte) 24, (byte) 150, (byte) 5, (byte) 154, (byte) 7,
074: (byte) 18, (byte) 128, (byte) 226, (byte) 235, (byte) 39,
075: (byte) 178, (byte) 117, (byte) 9, (byte) 131, (byte) 44,
076: (byte) 26, (byte) 27, (byte) 110, (byte) 90, (byte) 160,
077: (byte) 82, (byte) 59, (byte) 214, (byte) 179, (byte) 41,
078: (byte) 227, (byte) 47, (byte) 132, (byte) 83, (byte) 209,
079: (byte) 0, (byte) 237, (byte) 32, (byte) 252, (byte) 177,
080: (byte) 91, (byte) 106, (byte) 203, (byte) 190, (byte) 57,
081: (byte) 74, (byte) 76, (byte) 88, (byte) 207, (byte) 208,
082: (byte) 239, (byte) 170, (byte) 251, (byte) 67, (byte) 77,
083: (byte) 51, (byte) 133, (byte) 69, (byte) 249, (byte) 2,
084: (byte) 127, (byte) 80, (byte) 60, (byte) 159, (byte) 168,
085: (byte) 81, (byte) 163, (byte) 64, (byte) 143, (byte) 146,
086: (byte) 157, (byte) 56, (byte) 245, (byte) 188, (byte) 182,
087: (byte) 218, (byte) 33, (byte) 16, (byte) 255, (byte) 243,
088: (byte) 210, (byte) 205, (byte) 12, (byte) 19, (byte) 236,
089: (byte) 95, (byte) 151, (byte) 68, (byte) 23, (byte) 196,
090: (byte) 167, (byte) 126, (byte) 61, (byte) 100, (byte) 93,
091: (byte) 25, (byte) 115, (byte) 96, (byte) 129, (byte) 79,
092: (byte) 220, (byte) 34, (byte) 42, (byte) 144, (byte) 136,
093: (byte) 70, (byte) 238, (byte) 184, (byte) 20, (byte) 222,
094: (byte) 94, (byte) 11, (byte) 219, (byte) 224, (byte) 50,
095: (byte) 58, (byte) 10, (byte) 73, (byte) 6, (byte) 36,
096: (byte) 92, (byte) 194, (byte) 211, (byte) 172, (byte) 98,
097: (byte) 145, (byte) 149, (byte) 228, (byte) 121, (byte) 231,
098: (byte) 200, (byte) 55, (byte) 109, (byte) 141, (byte) 213,
099: (byte) 78, (byte) 169, (byte) 108, (byte) 86, (byte) 244,
100: (byte) 234, (byte) 101, (byte) 122, (byte) 174, (byte) 8,
101: (byte) 186, (byte) 120, (byte) 37, (byte) 46, (byte) 28,
102: (byte) 166, (byte) 180, (byte) 198, (byte) 232, (byte) 221,
103: (byte) 116, (byte) 31, (byte) 75, (byte) 189, (byte) 139,
104: (byte) 138, (byte) 112, (byte) 62, (byte) 181, (byte) 102,
105: (byte) 72, (byte) 3, (byte) 246, (byte) 14, (byte) 97,
106: (byte) 53, (byte) 87, (byte) 185, (byte) 134, (byte) 193,
107: (byte) 29, (byte) 158, (byte) 225, (byte) 248, (byte) 152,
108: (byte) 17, (byte) 105, (byte) 217, (byte) 142, (byte) 148,
109: (byte) 155, (byte) 30, (byte) 135, (byte) 233, (byte) 206,
110: (byte) 85, (byte) 40, (byte) 223, (byte) 140, (byte) 161,
111: (byte) 137, (byte) 13, (byte) 191, (byte) 230, (byte) 66,
112: (byte) 104, (byte) 65, (byte) 153, (byte) 45, (byte) 15,
113: (byte) 176, (byte) 84, (byte) 187, (byte) 22, };
114:
115: // The inverse S-box
116: private static final byte[] Si = { (byte) 82, (byte) 9, (byte) 106,
117: (byte) 213, (byte) 48, (byte) 54, (byte) 165, (byte) 56,
118: (byte) 191, (byte) 64, (byte) 163, (byte) 158, (byte) 129,
119: (byte) 243, (byte) 215, (byte) 251, (byte) 124, (byte) 227,
120: (byte) 57, (byte) 130, (byte) 155, (byte) 47, (byte) 255,
121: (byte) 135, (byte) 52, (byte) 142, (byte) 67, (byte) 68,
122: (byte) 196, (byte) 222, (byte) 233, (byte) 203, (byte) 84,
123: (byte) 123, (byte) 148, (byte) 50, (byte) 166, (byte) 194,
124: (byte) 35, (byte) 61, (byte) 238, (byte) 76, (byte) 149,
125: (byte) 11, (byte) 66, (byte) 250, (byte) 195, (byte) 78,
126: (byte) 8, (byte) 46, (byte) 161, (byte) 102, (byte) 40,
127: (byte) 217, (byte) 36, (byte) 178, (byte) 118, (byte) 91,
128: (byte) 162, (byte) 73, (byte) 109, (byte) 139, (byte) 209,
129: (byte) 37, (byte) 114, (byte) 248, (byte) 246, (byte) 100,
130: (byte) 134, (byte) 104, (byte) 152, (byte) 22, (byte) 212,
131: (byte) 164, (byte) 92, (byte) 204, (byte) 93, (byte) 101,
132: (byte) 182, (byte) 146, (byte) 108, (byte) 112, (byte) 72,
133: (byte) 80, (byte) 253, (byte) 237, (byte) 185, (byte) 218,
134: (byte) 94, (byte) 21, (byte) 70, (byte) 87, (byte) 167,
135: (byte) 141, (byte) 157, (byte) 132, (byte) 144, (byte) 216,
136: (byte) 171, (byte) 0, (byte) 140, (byte) 188, (byte) 211,
137: (byte) 10, (byte) 247, (byte) 228, (byte) 88, (byte) 5,
138: (byte) 184, (byte) 179, (byte) 69, (byte) 6, (byte) 208,
139: (byte) 44, (byte) 30, (byte) 143, (byte) 202, (byte) 63,
140: (byte) 15, (byte) 2, (byte) 193, (byte) 175, (byte) 189,
141: (byte) 3, (byte) 1, (byte) 19, (byte) 138, (byte) 107,
142: (byte) 58, (byte) 145, (byte) 17, (byte) 65, (byte) 79,
143: (byte) 103, (byte) 220, (byte) 234, (byte) 151, (byte) 242,
144: (byte) 207, (byte) 206, (byte) 240, (byte) 180, (byte) 230,
145: (byte) 115, (byte) 150, (byte) 172, (byte) 116, (byte) 34,
146: (byte) 231, (byte) 173, (byte) 53, (byte) 133, (byte) 226,
147: (byte) 249, (byte) 55, (byte) 232, (byte) 28, (byte) 117,
148: (byte) 223, (byte) 110, (byte) 71, (byte) 241, (byte) 26,
149: (byte) 113, (byte) 29, (byte) 41, (byte) 197, (byte) 137,
150: (byte) 111, (byte) 183, (byte) 98, (byte) 14, (byte) 170,
151: (byte) 24, (byte) 190, (byte) 27, (byte) 252, (byte) 86,
152: (byte) 62, (byte) 75, (byte) 198, (byte) 210, (byte) 121,
153: (byte) 32, (byte) 154, (byte) 219, (byte) 192, (byte) 254,
154: (byte) 120, (byte) 205, (byte) 90, (byte) 244, (byte) 31,
155: (byte) 221, (byte) 168, (byte) 51, (byte) 136, (byte) 7,
156: (byte) 199, (byte) 49, (byte) 177, (byte) 18, (byte) 16,
157: (byte) 89, (byte) 39, (byte) 128, (byte) 236, (byte) 95,
158: (byte) 96, (byte) 81, (byte) 127, (byte) 169, (byte) 25,
159: (byte) 181, (byte) 74, (byte) 13, (byte) 45, (byte) 229,
160: (byte) 122, (byte) 159, (byte) 147, (byte) 201, (byte) 156,
161: (byte) 239, (byte) 160, (byte) 224, (byte) 59, (byte) 77,
162: (byte) 174, (byte) 42, (byte) 245, (byte) 176, (byte) 200,
163: (byte) 235, (byte) 187, (byte) 60, (byte) 131, (byte) 83,
164: (byte) 153, (byte) 97, (byte) 23, (byte) 43, (byte) 4,
165: (byte) 126, (byte) 186, (byte) 119, (byte) 214, (byte) 38,
166: (byte) 225, (byte) 105, (byte) 20, (byte) 99, (byte) 85,
167: (byte) 33, (byte) 12, (byte) 125, };
168:
169: // vector used in calculating key schedule (powers of x in GF(256))
170: private static final int[] rcon = { 0x01, 0x02, 0x04, 0x08, 0x10,
171: 0x20, 0x40, 0x80, 0x1b, 0x36, 0x6c, 0xd8, 0xab, 0x4d, 0x9a,
172: 0x2f, 0x5e, 0xbc, 0x63, 0xc6, 0x97, 0x35, 0x6a, 0xd4, 0xb3,
173: 0x7d, 0xfa, 0xef, 0xc5, 0x91 };
174:
175: // precomputation tables of calculations for rounds
176: private static final int[] T0 = { 0xa56363c6, 0x847c7cf8,
177: 0x997777ee, 0x8d7b7bf6, 0x0df2f2ff, 0xbd6b6bd6, 0xb16f6fde,
178: 0x54c5c591, 0x50303060, 0x03010102, 0xa96767ce, 0x7d2b2b56,
179: 0x19fefee7, 0x62d7d7b5, 0xe6abab4d, 0x9a7676ec, 0x45caca8f,
180: 0x9d82821f, 0x40c9c989, 0x877d7dfa, 0x15fafaef, 0xeb5959b2,
181: 0xc947478e, 0x0bf0f0fb, 0xecadad41, 0x67d4d4b3, 0xfda2a25f,
182: 0xeaafaf45, 0xbf9c9c23, 0xf7a4a453, 0x967272e4, 0x5bc0c09b,
183: 0xc2b7b775, 0x1cfdfde1, 0xae93933d, 0x6a26264c, 0x5a36366c,
184: 0x413f3f7e, 0x02f7f7f5, 0x4fcccc83, 0x5c343468, 0xf4a5a551,
185: 0x34e5e5d1, 0x08f1f1f9, 0x937171e2, 0x73d8d8ab, 0x53313162,
186: 0x3f15152a, 0x0c040408, 0x52c7c795, 0x65232346, 0x5ec3c39d,
187: 0x28181830, 0xa1969637, 0x0f05050a, 0xb59a9a2f, 0x0907070e,
188: 0x36121224, 0x9b80801b, 0x3de2e2df, 0x26ebebcd, 0x6927274e,
189: 0xcdb2b27f, 0x9f7575ea, 0x1b090912, 0x9e83831d, 0x742c2c58,
190: 0x2e1a1a34, 0x2d1b1b36, 0xb26e6edc, 0xee5a5ab4, 0xfba0a05b,
191: 0xf65252a4, 0x4d3b3b76, 0x61d6d6b7, 0xceb3b37d, 0x7b292952,
192: 0x3ee3e3dd, 0x712f2f5e, 0x97848413, 0xf55353a6, 0x68d1d1b9,
193: 0x00000000, 0x2cededc1, 0x60202040, 0x1ffcfce3, 0xc8b1b179,
194: 0xed5b5bb6, 0xbe6a6ad4, 0x46cbcb8d, 0xd9bebe67, 0x4b393972,
195: 0xde4a4a94, 0xd44c4c98, 0xe85858b0, 0x4acfcf85, 0x6bd0d0bb,
196: 0x2aefefc5, 0xe5aaaa4f, 0x16fbfbed, 0xc5434386, 0xd74d4d9a,
197: 0x55333366, 0x94858511, 0xcf45458a, 0x10f9f9e9, 0x06020204,
198: 0x817f7ffe, 0xf05050a0, 0x443c3c78, 0xba9f9f25, 0xe3a8a84b,
199: 0xf35151a2, 0xfea3a35d, 0xc0404080, 0x8a8f8f05, 0xad92923f,
200: 0xbc9d9d21, 0x48383870, 0x04f5f5f1, 0xdfbcbc63, 0xc1b6b677,
201: 0x75dadaaf, 0x63212142, 0x30101020, 0x1affffe5, 0x0ef3f3fd,
202: 0x6dd2d2bf, 0x4ccdcd81, 0x140c0c18, 0x35131326, 0x2fececc3,
203: 0xe15f5fbe, 0xa2979735, 0xcc444488, 0x3917172e, 0x57c4c493,
204: 0xf2a7a755, 0x827e7efc, 0x473d3d7a, 0xac6464c8, 0xe75d5dba,
205: 0x2b191932, 0x957373e6, 0xa06060c0, 0x98818119, 0xd14f4f9e,
206: 0x7fdcdca3, 0x66222244, 0x7e2a2a54, 0xab90903b, 0x8388880b,
207: 0xca46468c, 0x29eeeec7, 0xd3b8b86b, 0x3c141428, 0x79dedea7,
208: 0xe25e5ebc, 0x1d0b0b16, 0x76dbdbad, 0x3be0e0db, 0x56323264,
209: 0x4e3a3a74, 0x1e0a0a14, 0xdb494992, 0x0a06060c, 0x6c242448,
210: 0xe45c5cb8, 0x5dc2c29f, 0x6ed3d3bd, 0xefacac43, 0xa66262c4,
211: 0xa8919139, 0xa4959531, 0x37e4e4d3, 0x8b7979f2, 0x32e7e7d5,
212: 0x43c8c88b, 0x5937376e, 0xb76d6dda, 0x8c8d8d01, 0x64d5d5b1,
213: 0xd24e4e9c, 0xe0a9a949, 0xb46c6cd8, 0xfa5656ac, 0x07f4f4f3,
214: 0x25eaeacf, 0xaf6565ca, 0x8e7a7af4, 0xe9aeae47, 0x18080810,
215: 0xd5baba6f, 0x887878f0, 0x6f25254a, 0x722e2e5c, 0x241c1c38,
216: 0xf1a6a657, 0xc7b4b473, 0x51c6c697, 0x23e8e8cb, 0x7cdddda1,
217: 0x9c7474e8, 0x211f1f3e, 0xdd4b4b96, 0xdcbdbd61, 0x868b8b0d,
218: 0x858a8a0f, 0x907070e0, 0x423e3e7c, 0xc4b5b571, 0xaa6666cc,
219: 0xd8484890, 0x05030306, 0x01f6f6f7, 0x120e0e1c, 0xa36161c2,
220: 0x5f35356a, 0xf95757ae, 0xd0b9b969, 0x91868617, 0x58c1c199,
221: 0x271d1d3a, 0xb99e9e27, 0x38e1e1d9, 0x13f8f8eb, 0xb398982b,
222: 0x33111122, 0xbb6969d2, 0x70d9d9a9, 0x898e8e07, 0xa7949433,
223: 0xb69b9b2d, 0x221e1e3c, 0x92878715, 0x20e9e9c9, 0x49cece87,
224: 0xff5555aa, 0x78282850, 0x7adfdfa5, 0x8f8c8c03, 0xf8a1a159,
225: 0x80898909, 0x170d0d1a, 0xdabfbf65, 0x31e6e6d7, 0xc6424284,
226: 0xb86868d0, 0xc3414182, 0xb0999929, 0x772d2d5a, 0x110f0f1e,
227: 0xcbb0b07b, 0xfc5454a8, 0xd6bbbb6d, 0x3a16162c };
228:
229: private static final int[] T1 = { 0x6363c6a5, 0x7c7cf884,
230: 0x7777ee99, 0x7b7bf68d, 0xf2f2ff0d, 0x6b6bd6bd, 0x6f6fdeb1,
231: 0xc5c59154, 0x30306050, 0x01010203, 0x6767cea9, 0x2b2b567d,
232: 0xfefee719, 0xd7d7b562, 0xabab4de6, 0x7676ec9a, 0xcaca8f45,
233: 0x82821f9d, 0xc9c98940, 0x7d7dfa87, 0xfafaef15, 0x5959b2eb,
234: 0x47478ec9, 0xf0f0fb0b, 0xadad41ec, 0xd4d4b367, 0xa2a25ffd,
235: 0xafaf45ea, 0x9c9c23bf, 0xa4a453f7, 0x7272e496, 0xc0c09b5b,
236: 0xb7b775c2, 0xfdfde11c, 0x93933dae, 0x26264c6a, 0x36366c5a,
237: 0x3f3f7e41, 0xf7f7f502, 0xcccc834f, 0x3434685c, 0xa5a551f4,
238: 0xe5e5d134, 0xf1f1f908, 0x7171e293, 0xd8d8ab73, 0x31316253,
239: 0x15152a3f, 0x0404080c, 0xc7c79552, 0x23234665, 0xc3c39d5e,
240: 0x18183028, 0x969637a1, 0x05050a0f, 0x9a9a2fb5, 0x07070e09,
241: 0x12122436, 0x80801b9b, 0xe2e2df3d, 0xebebcd26, 0x27274e69,
242: 0xb2b27fcd, 0x7575ea9f, 0x0909121b, 0x83831d9e, 0x2c2c5874,
243: 0x1a1a342e, 0x1b1b362d, 0x6e6edcb2, 0x5a5ab4ee, 0xa0a05bfb,
244: 0x5252a4f6, 0x3b3b764d, 0xd6d6b761, 0xb3b37dce, 0x2929527b,
245: 0xe3e3dd3e, 0x2f2f5e71, 0x84841397, 0x5353a6f5, 0xd1d1b968,
246: 0x00000000, 0xededc12c, 0x20204060, 0xfcfce31f, 0xb1b179c8,
247: 0x5b5bb6ed, 0x6a6ad4be, 0xcbcb8d46, 0xbebe67d9, 0x3939724b,
248: 0x4a4a94de, 0x4c4c98d4, 0x5858b0e8, 0xcfcf854a, 0xd0d0bb6b,
249: 0xefefc52a, 0xaaaa4fe5, 0xfbfbed16, 0x434386c5, 0x4d4d9ad7,
250: 0x33336655, 0x85851194, 0x45458acf, 0xf9f9e910, 0x02020406,
251: 0x7f7ffe81, 0x5050a0f0, 0x3c3c7844, 0x9f9f25ba, 0xa8a84be3,
252: 0x5151a2f3, 0xa3a35dfe, 0x404080c0, 0x8f8f058a, 0x92923fad,
253: 0x9d9d21bc, 0x38387048, 0xf5f5f104, 0xbcbc63df, 0xb6b677c1,
254: 0xdadaaf75, 0x21214263, 0x10102030, 0xffffe51a, 0xf3f3fd0e,
255: 0xd2d2bf6d, 0xcdcd814c, 0x0c0c1814, 0x13132635, 0xececc32f,
256: 0x5f5fbee1, 0x979735a2, 0x444488cc, 0x17172e39, 0xc4c49357,
257: 0xa7a755f2, 0x7e7efc82, 0x3d3d7a47, 0x6464c8ac, 0x5d5dbae7,
258: 0x1919322b, 0x7373e695, 0x6060c0a0, 0x81811998, 0x4f4f9ed1,
259: 0xdcdca37f, 0x22224466, 0x2a2a547e, 0x90903bab, 0x88880b83,
260: 0x46468cca, 0xeeeec729, 0xb8b86bd3, 0x1414283c, 0xdedea779,
261: 0x5e5ebce2, 0x0b0b161d, 0xdbdbad76, 0xe0e0db3b, 0x32326456,
262: 0x3a3a744e, 0x0a0a141e, 0x494992db, 0x06060c0a, 0x2424486c,
263: 0x5c5cb8e4, 0xc2c29f5d, 0xd3d3bd6e, 0xacac43ef, 0x6262c4a6,
264: 0x919139a8, 0x959531a4, 0xe4e4d337, 0x7979f28b, 0xe7e7d532,
265: 0xc8c88b43, 0x37376e59, 0x6d6ddab7, 0x8d8d018c, 0xd5d5b164,
266: 0x4e4e9cd2, 0xa9a949e0, 0x6c6cd8b4, 0x5656acfa, 0xf4f4f307,
267: 0xeaeacf25, 0x6565caaf, 0x7a7af48e, 0xaeae47e9, 0x08081018,
268: 0xbaba6fd5, 0x7878f088, 0x25254a6f, 0x2e2e5c72, 0x1c1c3824,
269: 0xa6a657f1, 0xb4b473c7, 0xc6c69751, 0xe8e8cb23, 0xdddda17c,
270: 0x7474e89c, 0x1f1f3e21, 0x4b4b96dd, 0xbdbd61dc, 0x8b8b0d86,
271: 0x8a8a0f85, 0x7070e090, 0x3e3e7c42, 0xb5b571c4, 0x6666ccaa,
272: 0x484890d8, 0x03030605, 0xf6f6f701, 0x0e0e1c12, 0x6161c2a3,
273: 0x35356a5f, 0x5757aef9, 0xb9b969d0, 0x86861791, 0xc1c19958,
274: 0x1d1d3a27, 0x9e9e27b9, 0xe1e1d938, 0xf8f8eb13, 0x98982bb3,
275: 0x11112233, 0x6969d2bb, 0xd9d9a970, 0x8e8e0789, 0x949433a7,
276: 0x9b9b2db6, 0x1e1e3c22, 0x87871592, 0xe9e9c920, 0xcece8749,
277: 0x5555aaff, 0x28285078, 0xdfdfa57a, 0x8c8c038f, 0xa1a159f8,
278: 0x89890980, 0x0d0d1a17, 0xbfbf65da, 0xe6e6d731, 0x424284c6,
279: 0x6868d0b8, 0x414182c3, 0x999929b0, 0x2d2d5a77, 0x0f0f1e11,
280: 0xb0b07bcb, 0x5454a8fc, 0xbbbb6dd6, 0x16162c3a };
281:
282: private static final int[] T2 = { 0x63c6a563, 0x7cf8847c,
283: 0x77ee9977, 0x7bf68d7b, 0xf2ff0df2, 0x6bd6bd6b, 0x6fdeb16f,
284: 0xc59154c5, 0x30605030, 0x01020301, 0x67cea967, 0x2b567d2b,
285: 0xfee719fe, 0xd7b562d7, 0xab4de6ab, 0x76ec9a76, 0xca8f45ca,
286: 0x821f9d82, 0xc98940c9, 0x7dfa877d, 0xfaef15fa, 0x59b2eb59,
287: 0x478ec947, 0xf0fb0bf0, 0xad41ecad, 0xd4b367d4, 0xa25ffda2,
288: 0xaf45eaaf, 0x9c23bf9c, 0xa453f7a4, 0x72e49672, 0xc09b5bc0,
289: 0xb775c2b7, 0xfde11cfd, 0x933dae93, 0x264c6a26, 0x366c5a36,
290: 0x3f7e413f, 0xf7f502f7, 0xcc834fcc, 0x34685c34, 0xa551f4a5,
291: 0xe5d134e5, 0xf1f908f1, 0x71e29371, 0xd8ab73d8, 0x31625331,
292: 0x152a3f15, 0x04080c04, 0xc79552c7, 0x23466523, 0xc39d5ec3,
293: 0x18302818, 0x9637a196, 0x050a0f05, 0x9a2fb59a, 0x070e0907,
294: 0x12243612, 0x801b9b80, 0xe2df3de2, 0xebcd26eb, 0x274e6927,
295: 0xb27fcdb2, 0x75ea9f75, 0x09121b09, 0x831d9e83, 0x2c58742c,
296: 0x1a342e1a, 0x1b362d1b, 0x6edcb26e, 0x5ab4ee5a, 0xa05bfba0,
297: 0x52a4f652, 0x3b764d3b, 0xd6b761d6, 0xb37dceb3, 0x29527b29,
298: 0xe3dd3ee3, 0x2f5e712f, 0x84139784, 0x53a6f553, 0xd1b968d1,
299: 0x00000000, 0xedc12ced, 0x20406020, 0xfce31ffc, 0xb179c8b1,
300: 0x5bb6ed5b, 0x6ad4be6a, 0xcb8d46cb, 0xbe67d9be, 0x39724b39,
301: 0x4a94de4a, 0x4c98d44c, 0x58b0e858, 0xcf854acf, 0xd0bb6bd0,
302: 0xefc52aef, 0xaa4fe5aa, 0xfbed16fb, 0x4386c543, 0x4d9ad74d,
303: 0x33665533, 0x85119485, 0x458acf45, 0xf9e910f9, 0x02040602,
304: 0x7ffe817f, 0x50a0f050, 0x3c78443c, 0x9f25ba9f, 0xa84be3a8,
305: 0x51a2f351, 0xa35dfea3, 0x4080c040, 0x8f058a8f, 0x923fad92,
306: 0x9d21bc9d, 0x38704838, 0xf5f104f5, 0xbc63dfbc, 0xb677c1b6,
307: 0xdaaf75da, 0x21426321, 0x10203010, 0xffe51aff, 0xf3fd0ef3,
308: 0xd2bf6dd2, 0xcd814ccd, 0x0c18140c, 0x13263513, 0xecc32fec,
309: 0x5fbee15f, 0x9735a297, 0x4488cc44, 0x172e3917, 0xc49357c4,
310: 0xa755f2a7, 0x7efc827e, 0x3d7a473d, 0x64c8ac64, 0x5dbae75d,
311: 0x19322b19, 0x73e69573, 0x60c0a060, 0x81199881, 0x4f9ed14f,
312: 0xdca37fdc, 0x22446622, 0x2a547e2a, 0x903bab90, 0x880b8388,
313: 0x468cca46, 0xeec729ee, 0xb86bd3b8, 0x14283c14, 0xdea779de,
314: 0x5ebce25e, 0x0b161d0b, 0xdbad76db, 0xe0db3be0, 0x32645632,
315: 0x3a744e3a, 0x0a141e0a, 0x4992db49, 0x060c0a06, 0x24486c24,
316: 0x5cb8e45c, 0xc29f5dc2, 0xd3bd6ed3, 0xac43efac, 0x62c4a662,
317: 0x9139a891, 0x9531a495, 0xe4d337e4, 0x79f28b79, 0xe7d532e7,
318: 0xc88b43c8, 0x376e5937, 0x6ddab76d, 0x8d018c8d, 0xd5b164d5,
319: 0x4e9cd24e, 0xa949e0a9, 0x6cd8b46c, 0x56acfa56, 0xf4f307f4,
320: 0xeacf25ea, 0x65caaf65, 0x7af48e7a, 0xae47e9ae, 0x08101808,
321: 0xba6fd5ba, 0x78f08878, 0x254a6f25, 0x2e5c722e, 0x1c38241c,
322: 0xa657f1a6, 0xb473c7b4, 0xc69751c6, 0xe8cb23e8, 0xdda17cdd,
323: 0x74e89c74, 0x1f3e211f, 0x4b96dd4b, 0xbd61dcbd, 0x8b0d868b,
324: 0x8a0f858a, 0x70e09070, 0x3e7c423e, 0xb571c4b5, 0x66ccaa66,
325: 0x4890d848, 0x03060503, 0xf6f701f6, 0x0e1c120e, 0x61c2a361,
326: 0x356a5f35, 0x57aef957, 0xb969d0b9, 0x86179186, 0xc19958c1,
327: 0x1d3a271d, 0x9e27b99e, 0xe1d938e1, 0xf8eb13f8, 0x982bb398,
328: 0x11223311, 0x69d2bb69, 0xd9a970d9, 0x8e07898e, 0x9433a794,
329: 0x9b2db69b, 0x1e3c221e, 0x87159287, 0xe9c920e9, 0xce8749ce,
330: 0x55aaff55, 0x28507828, 0xdfa57adf, 0x8c038f8c, 0xa159f8a1,
331: 0x89098089, 0x0d1a170d, 0xbf65dabf, 0xe6d731e6, 0x4284c642,
332: 0x68d0b868, 0x4182c341, 0x9929b099, 0x2d5a772d, 0x0f1e110f,
333: 0xb07bcbb0, 0x54a8fc54, 0xbb6dd6bb, 0x162c3a16 };
334:
335: private static final int[] T3 = { 0xc6a56363, 0xf8847c7c,
336: 0xee997777, 0xf68d7b7b, 0xff0df2f2, 0xd6bd6b6b, 0xdeb16f6f,
337: 0x9154c5c5, 0x60503030, 0x02030101, 0xcea96767, 0x567d2b2b,
338: 0xe719fefe, 0xb562d7d7, 0x4de6abab, 0xec9a7676, 0x8f45caca,
339: 0x1f9d8282, 0x8940c9c9, 0xfa877d7d, 0xef15fafa, 0xb2eb5959,
340: 0x8ec94747, 0xfb0bf0f0, 0x41ecadad, 0xb367d4d4, 0x5ffda2a2,
341: 0x45eaafaf, 0x23bf9c9c, 0x53f7a4a4, 0xe4967272, 0x9b5bc0c0,
342: 0x75c2b7b7, 0xe11cfdfd, 0x3dae9393, 0x4c6a2626, 0x6c5a3636,
343: 0x7e413f3f, 0xf502f7f7, 0x834fcccc, 0x685c3434, 0x51f4a5a5,
344: 0xd134e5e5, 0xf908f1f1, 0xe2937171, 0xab73d8d8, 0x62533131,
345: 0x2a3f1515, 0x080c0404, 0x9552c7c7, 0x46652323, 0x9d5ec3c3,
346: 0x30281818, 0x37a19696, 0x0a0f0505, 0x2fb59a9a, 0x0e090707,
347: 0x24361212, 0x1b9b8080, 0xdf3de2e2, 0xcd26ebeb, 0x4e692727,
348: 0x7fcdb2b2, 0xea9f7575, 0x121b0909, 0x1d9e8383, 0x58742c2c,
349: 0x342e1a1a, 0x362d1b1b, 0xdcb26e6e, 0xb4ee5a5a, 0x5bfba0a0,
350: 0xa4f65252, 0x764d3b3b, 0xb761d6d6, 0x7dceb3b3, 0x527b2929,
351: 0xdd3ee3e3, 0x5e712f2f, 0x13978484, 0xa6f55353, 0xb968d1d1,
352: 0x00000000, 0xc12ceded, 0x40602020, 0xe31ffcfc, 0x79c8b1b1,
353: 0xb6ed5b5b, 0xd4be6a6a, 0x8d46cbcb, 0x67d9bebe, 0x724b3939,
354: 0x94de4a4a, 0x98d44c4c, 0xb0e85858, 0x854acfcf, 0xbb6bd0d0,
355: 0xc52aefef, 0x4fe5aaaa, 0xed16fbfb, 0x86c54343, 0x9ad74d4d,
356: 0x66553333, 0x11948585, 0x8acf4545, 0xe910f9f9, 0x04060202,
357: 0xfe817f7f, 0xa0f05050, 0x78443c3c, 0x25ba9f9f, 0x4be3a8a8,
358: 0xa2f35151, 0x5dfea3a3, 0x80c04040, 0x058a8f8f, 0x3fad9292,
359: 0x21bc9d9d, 0x70483838, 0xf104f5f5, 0x63dfbcbc, 0x77c1b6b6,
360: 0xaf75dada, 0x42632121, 0x20301010, 0xe51affff, 0xfd0ef3f3,
361: 0xbf6dd2d2, 0x814ccdcd, 0x18140c0c, 0x26351313, 0xc32fecec,
362: 0xbee15f5f, 0x35a29797, 0x88cc4444, 0x2e391717, 0x9357c4c4,
363: 0x55f2a7a7, 0xfc827e7e, 0x7a473d3d, 0xc8ac6464, 0xbae75d5d,
364: 0x322b1919, 0xe6957373, 0xc0a06060, 0x19988181, 0x9ed14f4f,
365: 0xa37fdcdc, 0x44662222, 0x547e2a2a, 0x3bab9090, 0x0b838888,
366: 0x8cca4646, 0xc729eeee, 0x6bd3b8b8, 0x283c1414, 0xa779dede,
367: 0xbce25e5e, 0x161d0b0b, 0xad76dbdb, 0xdb3be0e0, 0x64563232,
368: 0x744e3a3a, 0x141e0a0a, 0x92db4949, 0x0c0a0606, 0x486c2424,
369: 0xb8e45c5c, 0x9f5dc2c2, 0xbd6ed3d3, 0x43efacac, 0xc4a66262,
370: 0x39a89191, 0x31a49595, 0xd337e4e4, 0xf28b7979, 0xd532e7e7,
371: 0x8b43c8c8, 0x6e593737, 0xdab76d6d, 0x018c8d8d, 0xb164d5d5,
372: 0x9cd24e4e, 0x49e0a9a9, 0xd8b46c6c, 0xacfa5656, 0xf307f4f4,
373: 0xcf25eaea, 0xcaaf6565, 0xf48e7a7a, 0x47e9aeae, 0x10180808,
374: 0x6fd5baba, 0xf0887878, 0x4a6f2525, 0x5c722e2e, 0x38241c1c,
375: 0x57f1a6a6, 0x73c7b4b4, 0x9751c6c6, 0xcb23e8e8, 0xa17cdddd,
376: 0xe89c7474, 0x3e211f1f, 0x96dd4b4b, 0x61dcbdbd, 0x0d868b8b,
377: 0x0f858a8a, 0xe0907070, 0x7c423e3e, 0x71c4b5b5, 0xccaa6666,
378: 0x90d84848, 0x06050303, 0xf701f6f6, 0x1c120e0e, 0xc2a36161,
379: 0x6a5f3535, 0xaef95757, 0x69d0b9b9, 0x17918686, 0x9958c1c1,
380: 0x3a271d1d, 0x27b99e9e, 0xd938e1e1, 0xeb13f8f8, 0x2bb39898,
381: 0x22331111, 0xd2bb6969, 0xa970d9d9, 0x07898e8e, 0x33a79494,
382: 0x2db69b9b, 0x3c221e1e, 0x15928787, 0xc920e9e9, 0x8749cece,
383: 0xaaff5555, 0x50782828, 0xa57adfdf, 0x038f8c8c, 0x59f8a1a1,
384: 0x09808989, 0x1a170d0d, 0x65dabfbf, 0xd731e6e6, 0x84c64242,
385: 0xd0b86868, 0x82c34141, 0x29b09999, 0x5a772d2d, 0x1e110f0f,
386: 0x7bcbb0b0, 0xa8fc5454, 0x6dd6bbbb, 0x2c3a1616 };
387:
388: private static final int[] Tinv0 = { 0x50a7f451, 0x5365417e,
389: 0xc3a4171a, 0x965e273a, 0xcb6bab3b, 0xf1459d1f, 0xab58faac,
390: 0x9303e34b, 0x55fa3020, 0xf66d76ad, 0x9176cc88, 0x254c02f5,
391: 0xfcd7e54f, 0xd7cb2ac5, 0x80443526, 0x8fa362b5, 0x495ab1de,
392: 0x671bba25, 0x980eea45, 0xe1c0fe5d, 0x02752fc3, 0x12f04c81,
393: 0xa397468d, 0xc6f9d36b, 0xe75f8f03, 0x959c9215, 0xeb7a6dbf,
394: 0xda595295, 0x2d83bed4, 0xd3217458, 0x2969e049, 0x44c8c98e,
395: 0x6a89c275, 0x78798ef4, 0x6b3e5899, 0xdd71b927, 0xb64fe1be,
396: 0x17ad88f0, 0x66ac20c9, 0xb43ace7d, 0x184adf63, 0x82311ae5,
397: 0x60335197, 0x457f5362, 0xe07764b1, 0x84ae6bbb, 0x1ca081fe,
398: 0x942b08f9, 0x58684870, 0x19fd458f, 0x876cde94, 0xb7f87b52,
399: 0x23d373ab, 0xe2024b72, 0x578f1fe3, 0x2aab5566, 0x0728ebb2,
400: 0x03c2b52f, 0x9a7bc586, 0xa50837d3, 0xf2872830, 0xb2a5bf23,
401: 0xba6a0302, 0x5c8216ed, 0x2b1ccf8a, 0x92b479a7, 0xf0f207f3,
402: 0xa1e2694e, 0xcdf4da65, 0xd5be0506, 0x1f6234d1, 0x8afea6c4,
403: 0x9d532e34, 0xa055f3a2, 0x32e18a05, 0x75ebf6a4, 0x39ec830b,
404: 0xaaef6040, 0x069f715e, 0x51106ebd, 0xf98a213e, 0x3d06dd96,
405: 0xae053edd, 0x46bde64d, 0xb58d5491, 0x055dc471, 0x6fd40604,
406: 0xff155060, 0x24fb9819, 0x97e9bdd6, 0xcc434089, 0x779ed967,
407: 0xbd42e8b0, 0x888b8907, 0x385b19e7, 0xdbeec879, 0x470a7ca1,
408: 0xe90f427c, 0xc91e84f8, 0x00000000, 0x83868009, 0x48ed2b32,
409: 0xac70111e, 0x4e725a6c, 0xfbff0efd, 0x5638850f, 0x1ed5ae3d,
410: 0x27392d36, 0x64d90f0a, 0x21a65c68, 0xd1545b9b, 0x3a2e3624,
411: 0xb1670a0c, 0x0fe75793, 0xd296eeb4, 0x9e919b1b, 0x4fc5c080,
412: 0xa220dc61, 0x694b775a, 0x161a121c, 0x0aba93e2, 0xe52aa0c0,
413: 0x43e0223c, 0x1d171b12, 0x0b0d090e, 0xadc78bf2, 0xb9a8b62d,
414: 0xc8a91e14, 0x8519f157, 0x4c0775af, 0xbbdd99ee, 0xfd607fa3,
415: 0x9f2601f7, 0xbcf5725c, 0xc53b6644, 0x347efb5b, 0x7629438b,
416: 0xdcc623cb, 0x68fcedb6, 0x63f1e4b8, 0xcadc31d7, 0x10856342,
417: 0x40229713, 0x2011c684, 0x7d244a85, 0xf83dbbd2, 0x1132f9ae,
418: 0x6da129c7, 0x4b2f9e1d, 0xf330b2dc, 0xec52860d, 0xd0e3c177,
419: 0x6c16b32b, 0x99b970a9, 0xfa489411, 0x2264e947, 0xc48cfca8,
420: 0x1a3ff0a0, 0xd82c7d56, 0xef903322, 0xc74e4987, 0xc1d138d9,
421: 0xfea2ca8c, 0x360bd498, 0xcf81f5a6, 0x28de7aa5, 0x268eb7da,
422: 0xa4bfad3f, 0xe49d3a2c, 0x0d927850, 0x9bcc5f6a, 0x62467e54,
423: 0xc2138df6, 0xe8b8d890, 0x5ef7392e, 0xf5afc382, 0xbe805d9f,
424: 0x7c93d069, 0xa92dd56f, 0xb31225cf, 0x3b99acc8, 0xa77d1810,
425: 0x6e639ce8, 0x7bbb3bdb, 0x097826cd, 0xf418596e, 0x01b79aec,
426: 0xa89a4f83, 0x656e95e6, 0x7ee6ffaa, 0x08cfbc21, 0xe6e815ef,
427: 0xd99be7ba, 0xce366f4a, 0xd4099fea, 0xd67cb029, 0xafb2a431,
428: 0x31233f2a, 0x3094a5c6, 0xc066a235, 0x37bc4e74, 0xa6ca82fc,
429: 0xb0d090e0, 0x15d8a733, 0x4a9804f1, 0xf7daec41, 0x0e50cd7f,
430: 0x2ff69117, 0x8dd64d76, 0x4db0ef43, 0x544daacc, 0xdf0496e4,
431: 0xe3b5d19e, 0x1b886a4c, 0xb81f2cc1, 0x7f516546, 0x04ea5e9d,
432: 0x5d358c01, 0x737487fa, 0x2e410bfb, 0x5a1d67b3, 0x52d2db92,
433: 0x335610e9, 0x1347d66d, 0x8c61d79a, 0x7a0ca137, 0x8e14f859,
434: 0x893c13eb, 0xee27a9ce, 0x35c961b7, 0xede51ce1, 0x3cb1477a,
435: 0x59dfd29c, 0x3f73f255, 0x79ce1418, 0xbf37c773, 0xeacdf753,
436: 0x5baafd5f, 0x146f3ddf, 0x86db4478, 0x81f3afca, 0x3ec468b9,
437: 0x2c342438, 0x5f40a3c2, 0x72c31d16, 0x0c25e2bc, 0x8b493c28,
438: 0x41950dff, 0x7101a839, 0xdeb30c08, 0x9ce4b4d8, 0x90c15664,
439: 0x6184cb7b, 0x70b632d5, 0x745c6c48, 0x4257b8d0 };
440:
441: private static final int[] Tinv1 = { 0xa7f45150, 0x65417e53,
442: 0xa4171ac3, 0x5e273a96, 0x6bab3bcb, 0x459d1ff1, 0x58faacab,
443: 0x03e34b93, 0xfa302055, 0x6d76adf6, 0x76cc8891, 0x4c02f525,
444: 0xd7e54ffc, 0xcb2ac5d7, 0x44352680, 0xa362b58f, 0x5ab1de49,
445: 0x1bba2567, 0x0eea4598, 0xc0fe5de1, 0x752fc302, 0xf04c8112,
446: 0x97468da3, 0xf9d36bc6, 0x5f8f03e7, 0x9c921595, 0x7a6dbfeb,
447: 0x595295da, 0x83bed42d, 0x217458d3, 0x69e04929, 0xc8c98e44,
448: 0x89c2756a, 0x798ef478, 0x3e58996b, 0x71b927dd, 0x4fe1beb6,
449: 0xad88f017, 0xac20c966, 0x3ace7db4, 0x4adf6318, 0x311ae582,
450: 0x33519760, 0x7f536245, 0x7764b1e0, 0xae6bbb84, 0xa081fe1c,
451: 0x2b08f994, 0x68487058, 0xfd458f19, 0x6cde9487, 0xf87b52b7,
452: 0xd373ab23, 0x024b72e2, 0x8f1fe357, 0xab55662a, 0x28ebb207,
453: 0xc2b52f03, 0x7bc5869a, 0x0837d3a5, 0x872830f2, 0xa5bf23b2,
454: 0x6a0302ba, 0x8216ed5c, 0x1ccf8a2b, 0xb479a792, 0xf207f3f0,
455: 0xe2694ea1, 0xf4da65cd, 0xbe0506d5, 0x6234d11f, 0xfea6c48a,
456: 0x532e349d, 0x55f3a2a0, 0xe18a0532, 0xebf6a475, 0xec830b39,
457: 0xef6040aa, 0x9f715e06, 0x106ebd51, 0x8a213ef9, 0x06dd963d,
458: 0x053eddae, 0xbde64d46, 0x8d5491b5, 0x5dc47105, 0xd406046f,
459: 0x155060ff, 0xfb981924, 0xe9bdd697, 0x434089cc, 0x9ed96777,
460: 0x42e8b0bd, 0x8b890788, 0x5b19e738, 0xeec879db, 0x0a7ca147,
461: 0x0f427ce9, 0x1e84f8c9, 0x00000000, 0x86800983, 0xed2b3248,
462: 0x70111eac, 0x725a6c4e, 0xff0efdfb, 0x38850f56, 0xd5ae3d1e,
463: 0x392d3627, 0xd90f0a64, 0xa65c6821, 0x545b9bd1, 0x2e36243a,
464: 0x670a0cb1, 0xe757930f, 0x96eeb4d2, 0x919b1b9e, 0xc5c0804f,
465: 0x20dc61a2, 0x4b775a69, 0x1a121c16, 0xba93e20a, 0x2aa0c0e5,
466: 0xe0223c43, 0x171b121d, 0x0d090e0b, 0xc78bf2ad, 0xa8b62db9,
467: 0xa91e14c8, 0x19f15785, 0x0775af4c, 0xdd99eebb, 0x607fa3fd,
468: 0x2601f79f, 0xf5725cbc, 0x3b6644c5, 0x7efb5b34, 0x29438b76,
469: 0xc623cbdc, 0xfcedb668, 0xf1e4b863, 0xdc31d7ca, 0x85634210,
470: 0x22971340, 0x11c68420, 0x244a857d, 0x3dbbd2f8, 0x32f9ae11,
471: 0xa129c76d, 0x2f9e1d4b, 0x30b2dcf3, 0x52860dec, 0xe3c177d0,
472: 0x16b32b6c, 0xb970a999, 0x489411fa, 0x64e94722, 0x8cfca8c4,
473: 0x3ff0a01a, 0x2c7d56d8, 0x903322ef, 0x4e4987c7, 0xd138d9c1,
474: 0xa2ca8cfe, 0x0bd49836, 0x81f5a6cf, 0xde7aa528, 0x8eb7da26,
475: 0xbfad3fa4, 0x9d3a2ce4, 0x9278500d, 0xcc5f6a9b, 0x467e5462,
476: 0x138df6c2, 0xb8d890e8, 0xf7392e5e, 0xafc382f5, 0x805d9fbe,
477: 0x93d0697c, 0x2dd56fa9, 0x1225cfb3, 0x99acc83b, 0x7d1810a7,
478: 0x639ce86e, 0xbb3bdb7b, 0x7826cd09, 0x18596ef4, 0xb79aec01,
479: 0x9a4f83a8, 0x6e95e665, 0xe6ffaa7e, 0xcfbc2108, 0xe815efe6,
480: 0x9be7bad9, 0x366f4ace, 0x099fead4, 0x7cb029d6, 0xb2a431af,
481: 0x233f2a31, 0x94a5c630, 0x66a235c0, 0xbc4e7437, 0xca82fca6,
482: 0xd090e0b0, 0xd8a73315, 0x9804f14a, 0xdaec41f7, 0x50cd7f0e,
483: 0xf691172f, 0xd64d768d, 0xb0ef434d, 0x4daacc54, 0x0496e4df,
484: 0xb5d19ee3, 0x886a4c1b, 0x1f2cc1b8, 0x5165467f, 0xea5e9d04,
485: 0x358c015d, 0x7487fa73, 0x410bfb2e, 0x1d67b35a, 0xd2db9252,
486: 0x5610e933, 0x47d66d13, 0x61d79a8c, 0x0ca1377a, 0x14f8598e,
487: 0x3c13eb89, 0x27a9ceee, 0xc961b735, 0xe51ce1ed, 0xb1477a3c,
488: 0xdfd29c59, 0x73f2553f, 0xce141879, 0x37c773bf, 0xcdf753ea,
489: 0xaafd5f5b, 0x6f3ddf14, 0xdb447886, 0xf3afca81, 0xc468b93e,
490: 0x3424382c, 0x40a3c25f, 0xc31d1672, 0x25e2bc0c, 0x493c288b,
491: 0x950dff41, 0x01a83971, 0xb30c08de, 0xe4b4d89c, 0xc1566490,
492: 0x84cb7b61, 0xb632d570, 0x5c6c4874, 0x57b8d042 };
493:
494: private static final int[] Tinv2 = { 0xf45150a7, 0x417e5365,
495: 0x171ac3a4, 0x273a965e, 0xab3bcb6b, 0x9d1ff145, 0xfaacab58,
496: 0xe34b9303, 0x302055fa, 0x76adf66d, 0xcc889176, 0x02f5254c,
497: 0xe54ffcd7, 0x2ac5d7cb, 0x35268044, 0x62b58fa3, 0xb1de495a,
498: 0xba25671b, 0xea45980e, 0xfe5de1c0, 0x2fc30275, 0x4c8112f0,
499: 0x468da397, 0xd36bc6f9, 0x8f03e75f, 0x9215959c, 0x6dbfeb7a,
500: 0x5295da59, 0xbed42d83, 0x7458d321, 0xe0492969, 0xc98e44c8,
501: 0xc2756a89, 0x8ef47879, 0x58996b3e, 0xb927dd71, 0xe1beb64f,
502: 0x88f017ad, 0x20c966ac, 0xce7db43a, 0xdf63184a, 0x1ae58231,
503: 0x51976033, 0x5362457f, 0x64b1e077, 0x6bbb84ae, 0x81fe1ca0,
504: 0x08f9942b, 0x48705868, 0x458f19fd, 0xde94876c, 0x7b52b7f8,
505: 0x73ab23d3, 0x4b72e202, 0x1fe3578f, 0x55662aab, 0xebb20728,
506: 0xb52f03c2, 0xc5869a7b, 0x37d3a508, 0x2830f287, 0xbf23b2a5,
507: 0x0302ba6a, 0x16ed5c82, 0xcf8a2b1c, 0x79a792b4, 0x07f3f0f2,
508: 0x694ea1e2, 0xda65cdf4, 0x0506d5be, 0x34d11f62, 0xa6c48afe,
509: 0x2e349d53, 0xf3a2a055, 0x8a0532e1, 0xf6a475eb, 0x830b39ec,
510: 0x6040aaef, 0x715e069f, 0x6ebd5110, 0x213ef98a, 0xdd963d06,
511: 0x3eddae05, 0xe64d46bd, 0x5491b58d, 0xc471055d, 0x06046fd4,
512: 0x5060ff15, 0x981924fb, 0xbdd697e9, 0x4089cc43, 0xd967779e,
513: 0xe8b0bd42, 0x8907888b, 0x19e7385b, 0xc879dbee, 0x7ca1470a,
514: 0x427ce90f, 0x84f8c91e, 0x00000000, 0x80098386, 0x2b3248ed,
515: 0x111eac70, 0x5a6c4e72, 0x0efdfbff, 0x850f5638, 0xae3d1ed5,
516: 0x2d362739, 0x0f0a64d9, 0x5c6821a6, 0x5b9bd154, 0x36243a2e,
517: 0x0a0cb167, 0x57930fe7, 0xeeb4d296, 0x9b1b9e91, 0xc0804fc5,
518: 0xdc61a220, 0x775a694b, 0x121c161a, 0x93e20aba, 0xa0c0e52a,
519: 0x223c43e0, 0x1b121d17, 0x090e0b0d, 0x8bf2adc7, 0xb62db9a8,
520: 0x1e14c8a9, 0xf1578519, 0x75af4c07, 0x99eebbdd, 0x7fa3fd60,
521: 0x01f79f26, 0x725cbcf5, 0x6644c53b, 0xfb5b347e, 0x438b7629,
522: 0x23cbdcc6, 0xedb668fc, 0xe4b863f1, 0x31d7cadc, 0x63421085,
523: 0x97134022, 0xc6842011, 0x4a857d24, 0xbbd2f83d, 0xf9ae1132,
524: 0x29c76da1, 0x9e1d4b2f, 0xb2dcf330, 0x860dec52, 0xc177d0e3,
525: 0xb32b6c16, 0x70a999b9, 0x9411fa48, 0xe9472264, 0xfca8c48c,
526: 0xf0a01a3f, 0x7d56d82c, 0x3322ef90, 0x4987c74e, 0x38d9c1d1,
527: 0xca8cfea2, 0xd498360b, 0xf5a6cf81, 0x7aa528de, 0xb7da268e,
528: 0xad3fa4bf, 0x3a2ce49d, 0x78500d92, 0x5f6a9bcc, 0x7e546246,
529: 0x8df6c213, 0xd890e8b8, 0x392e5ef7, 0xc382f5af, 0x5d9fbe80,
530: 0xd0697c93, 0xd56fa92d, 0x25cfb312, 0xacc83b99, 0x1810a77d,
531: 0x9ce86e63, 0x3bdb7bbb, 0x26cd0978, 0x596ef418, 0x9aec01b7,
532: 0x4f83a89a, 0x95e6656e, 0xffaa7ee6, 0xbc2108cf, 0x15efe6e8,
533: 0xe7bad99b, 0x6f4ace36, 0x9fead409, 0xb029d67c, 0xa431afb2,
534: 0x3f2a3123, 0xa5c63094, 0xa235c066, 0x4e7437bc, 0x82fca6ca,
535: 0x90e0b0d0, 0xa73315d8, 0x04f14a98, 0xec41f7da, 0xcd7f0e50,
536: 0x91172ff6, 0x4d768dd6, 0xef434db0, 0xaacc544d, 0x96e4df04,
537: 0xd19ee3b5, 0x6a4c1b88, 0x2cc1b81f, 0x65467f51, 0x5e9d04ea,
538: 0x8c015d35, 0x87fa7374, 0x0bfb2e41, 0x67b35a1d, 0xdb9252d2,
539: 0x10e93356, 0xd66d1347, 0xd79a8c61, 0xa1377a0c, 0xf8598e14,
540: 0x13eb893c, 0xa9ceee27, 0x61b735c9, 0x1ce1ede5, 0x477a3cb1,
541: 0xd29c59df, 0xf2553f73, 0x141879ce, 0xc773bf37, 0xf753eacd,
542: 0xfd5f5baa, 0x3ddf146f, 0x447886db, 0xafca81f3, 0x68b93ec4,
543: 0x24382c34, 0xa3c25f40, 0x1d1672c3, 0xe2bc0c25, 0x3c288b49,
544: 0x0dff4195, 0xa8397101, 0x0c08deb3, 0xb4d89ce4, 0x566490c1,
545: 0xcb7b6184, 0x32d570b6, 0x6c48745c, 0xb8d04257 };
546:
547: private static final int[] Tinv3 = { 0x5150a7f4, 0x7e536541,
548: 0x1ac3a417, 0x3a965e27, 0x3bcb6bab, 0x1ff1459d, 0xacab58fa,
549: 0x4b9303e3, 0x2055fa30, 0xadf66d76, 0x889176cc, 0xf5254c02,
550: 0x4ffcd7e5, 0xc5d7cb2a, 0x26804435, 0xb58fa362, 0xde495ab1,
551: 0x25671bba, 0x45980eea, 0x5de1c0fe, 0xc302752f, 0x8112f04c,
552: 0x8da39746, 0x6bc6f9d3, 0x03e75f8f, 0x15959c92, 0xbfeb7a6d,
553: 0x95da5952, 0xd42d83be, 0x58d32174, 0x492969e0, 0x8e44c8c9,
554: 0x756a89c2, 0xf478798e, 0x996b3e58, 0x27dd71b9, 0xbeb64fe1,
555: 0xf017ad88, 0xc966ac20, 0x7db43ace, 0x63184adf, 0xe582311a,
556: 0x97603351, 0x62457f53, 0xb1e07764, 0xbb84ae6b, 0xfe1ca081,
557: 0xf9942b08, 0x70586848, 0x8f19fd45, 0x94876cde, 0x52b7f87b,
558: 0xab23d373, 0x72e2024b, 0xe3578f1f, 0x662aab55, 0xb20728eb,
559: 0x2f03c2b5, 0x869a7bc5, 0xd3a50837, 0x30f28728, 0x23b2a5bf,
560: 0x02ba6a03, 0xed5c8216, 0x8a2b1ccf, 0xa792b479, 0xf3f0f207,
561: 0x4ea1e269, 0x65cdf4da, 0x06d5be05, 0xd11f6234, 0xc48afea6,
562: 0x349d532e, 0xa2a055f3, 0x0532e18a, 0xa475ebf6, 0x0b39ec83,
563: 0x40aaef60, 0x5e069f71, 0xbd51106e, 0x3ef98a21, 0x963d06dd,
564: 0xddae053e, 0x4d46bde6, 0x91b58d54, 0x71055dc4, 0x046fd406,
565: 0x60ff1550, 0x1924fb98, 0xd697e9bd, 0x89cc4340, 0x67779ed9,
566: 0xb0bd42e8, 0x07888b89, 0xe7385b19, 0x79dbeec8, 0xa1470a7c,
567: 0x7ce90f42, 0xf8c91e84, 0x00000000, 0x09838680, 0x3248ed2b,
568: 0x1eac7011, 0x6c4e725a, 0xfdfbff0e, 0x0f563885, 0x3d1ed5ae,
569: 0x3627392d, 0x0a64d90f, 0x6821a65c, 0x9bd1545b, 0x243a2e36,
570: 0x0cb1670a, 0x930fe757, 0xb4d296ee, 0x1b9e919b, 0x804fc5c0,
571: 0x61a220dc, 0x5a694b77, 0x1c161a12, 0xe20aba93, 0xc0e52aa0,
572: 0x3c43e022, 0x121d171b, 0x0e0b0d09, 0xf2adc78b, 0x2db9a8b6,
573: 0x14c8a91e, 0x578519f1, 0xaf4c0775, 0xeebbdd99, 0xa3fd607f,
574: 0xf79f2601, 0x5cbcf572, 0x44c53b66, 0x5b347efb, 0x8b762943,
575: 0xcbdcc623, 0xb668fced, 0xb863f1e4, 0xd7cadc31, 0x42108563,
576: 0x13402297, 0x842011c6, 0x857d244a, 0xd2f83dbb, 0xae1132f9,
577: 0xc76da129, 0x1d4b2f9e, 0xdcf330b2, 0x0dec5286, 0x77d0e3c1,
578: 0x2b6c16b3, 0xa999b970, 0x11fa4894, 0x472264e9, 0xa8c48cfc,
579: 0xa01a3ff0, 0x56d82c7d, 0x22ef9033, 0x87c74e49, 0xd9c1d138,
580: 0x8cfea2ca, 0x98360bd4, 0xa6cf81f5, 0xa528de7a, 0xda268eb7,
581: 0x3fa4bfad, 0x2ce49d3a, 0x500d9278, 0x6a9bcc5f, 0x5462467e,
582: 0xf6c2138d, 0x90e8b8d8, 0x2e5ef739, 0x82f5afc3, 0x9fbe805d,
583: 0x697c93d0, 0x6fa92dd5, 0xcfb31225, 0xc83b99ac, 0x10a77d18,
584: 0xe86e639c, 0xdb7bbb3b, 0xcd097826, 0x6ef41859, 0xec01b79a,
585: 0x83a89a4f, 0xe6656e95, 0xaa7ee6ff, 0x2108cfbc, 0xefe6e815,
586: 0xbad99be7, 0x4ace366f, 0xead4099f, 0x29d67cb0, 0x31afb2a4,
587: 0x2a31233f, 0xc63094a5, 0x35c066a2, 0x7437bc4e, 0xfca6ca82,
588: 0xe0b0d090, 0x3315d8a7, 0xf14a9804, 0x41f7daec, 0x7f0e50cd,
589: 0x172ff691, 0x768dd64d, 0x434db0ef, 0xcc544daa, 0xe4df0496,
590: 0x9ee3b5d1, 0x4c1b886a, 0xc1b81f2c, 0x467f5165, 0x9d04ea5e,
591: 0x015d358c, 0xfa737487, 0xfb2e410b, 0xb35a1d67, 0x9252d2db,
592: 0xe9335610, 0x6d1347d6, 0x9a8c61d7, 0x377a0ca1, 0x598e14f8,
593: 0xeb893c13, 0xceee27a9, 0xb735c961, 0xe1ede51c, 0x7a3cb147,
594: 0x9c59dfd2, 0x553f73f2, 0x1879ce14, 0x73bf37c7, 0x53eacdf7,
595: 0x5f5baafd, 0xdf146f3d, 0x7886db44, 0xca81f3af, 0xb93ec468,
596: 0x382c3424, 0xc25f40a3, 0x1672c31d, 0xbc0c25e2, 0x288b493c,
597: 0xff41950d, 0x397101a8, 0x08deb30c, 0xd89ce4b4, 0x6490c156,
598: 0x7b6184cb, 0xd570b632, 0x48745c6c, 0xd04257b8 };
599:
600: private final int shift(int r, int shift) {
601: return (((r >>> shift) | (r << (32 - shift))));
602: }
603:
604: /* multiply four bytes in GF(2^8) by 'x' {02} in parallel */
605:
606: private static final int m1 = 0x80808080;
607: private static final int m2 = 0x7f7f7f7f;
608: private static final int m3 = 0x0000001b;
609:
610: private final int FFmulX(int x) {
611: return (((x & m2) << 1) ^ (((x & m1) >>> 7) * m3));
612: }
613:
614: /*
615: * The following defines provide alternative definitions of FFmulX that
616: * might give improved performance if a fast 32-bit multiply is not
617: * available.
618: *
619: * private int FFmulX(int x) { int u = x & m1; u |= (u >> 1); return ((x &
620: * m2) < < 1) ^ ((u >>> 3) | (u >>> 6)); } private static final int m4 =
621: * 0x1b1b1b1b; private int FFmulX(int x) { int u = x & m1; return ((x & m2) < <
622: * 1) ^ ((u - (u >>> 7)) & m4); }
623: *
624: */
625:
626: private final int inv_mcol(int x) {
627: int f2 = FFmulX(x);
628: int f4 = FFmulX(f2);
629: int f8 = FFmulX(f4);
630: int f9 = x ^ f8;
631:
632: return f2 ^ f4 ^ f8 ^ shift(f2 ^ f9, 8) ^ shift(f4 ^ f9, 16)
633: ^ shift(f9, 24);
634: }
635:
636: private final int subWord(int x) {
637: return (S[x & 255] & 255 | ((S[(x >> 8) & 255] & 255) << 8)
638: | ((S[(x >> 16) & 255] & 255) << 16) | S[(x >> 24) & 255] << 24);
639: }
640:
641: /**
642: * Calculate the necessary round keys The number of calculations depends on
643: * key size and block size AES specified a fixed block size of 128 bits and
644: * key sizes 128/192/256 bits This code is written assuming those are the
645: * only possible values
646: */
647: private final int[][] generateWorkingKey(byte[] key,
648: boolean forEncryption) {
649: int KC = key.length / 4; // key length in words
650: int t;
651:
652: if (((KC != 4) && (KC != 6) && (KC != 8))
653: || ((KC * 4) != key.length)) {
654: throw new IllegalArgumentException(
655: "Key length not 128/192/256 bits.");
656: }
657:
658: ROUNDS = KC + 6; // This is not always true for the generalized
659: // Rijndael that allows larger block sizes
660: int[][] W = new int[ROUNDS + 1][4]; // 4 words in a block
661:
662: //
663: // copy the key into the round key array
664: //
665:
666: t = 0;
667: for (int i = 0; i < key.length; t++) {
668: W[t >> 2][t & 3] = (key[i] & 0xff)
669: | ((key[i + 1] & 0xff) << 8)
670: | ((key[i + 2] & 0xff) << 16) | (key[i + 3] << 24);
671: i += 4;
672: }
673:
674: //
675: // while not enough round key material calculated
676: // calculate new values
677: //
678: int k = (ROUNDS + 1) << 2;
679: for (int i = KC; (i < k); i++) {
680: int temp = W[(i - 1) >> 2][(i - 1) & 3];
681: if ((i % KC) == 0) {
682: temp = subWord(shift(temp, 8)) ^ rcon[(i / KC) - 1];
683: } else if ((KC > 6) && ((i % KC) == 4)) {
684: temp = subWord(temp);
685: }
686:
687: W[i >> 2][i & 3] = W[(i - KC) >> 2][(i - KC) & 3] ^ temp;
688: }
689:
690: if (!forEncryption) {
691: for (int j = 1; j < ROUNDS; j++) {
692: for (int i = 0; i < 4; i++) {
693: W[j][i] = inv_mcol(W[j][i]);
694: }
695: }
696: }
697:
698: return W;
699: }
700:
701: private int ROUNDS;
702: private int[][] WorkingKey = null;
703: private int C0, C1, C2, C3;
704: private boolean doEncrypt;
705:
706: private static final int BLOCK_SIZE = 16;
707:
708: /**
709: * default constructor - 128 bit block size.
710: */
711: public AES() {
712: }
713:
714: /**
715: * initialise an AES cipher.
716: *
717: * @param forEncryption
718: * whether or not we are for encryption.
719: * @param key
720: * the key required to set up the cipher.
721: * @exception IllegalArgumentException
722: * if the params argument is inappropriate.
723: */
724:
725: public final void init(boolean forEncryption, byte[] key) {
726: WorkingKey = generateWorkingKey(key, forEncryption);
727: this .doEncrypt = forEncryption;
728: }
729:
730: public final String getAlgorithmName() {
731: return "AES";
732: }
733:
734: public final int getBlockSize() {
735: return BLOCK_SIZE;
736: }
737:
738: public final int processBlock(byte[] in, int inOff, byte[] out,
739: int outOff) {
740: if (WorkingKey == null) {
741: throw new IllegalStateException(
742: "AES engine not initialised");
743: }
744:
745: if ((inOff + (32 / 2)) > in.length) {
746: throw new IllegalArgumentException("input buffer too short");
747: }
748:
749: if ((outOff + (32 / 2)) > out.length) {
750: throw new IllegalArgumentException(
751: "output buffer too short");
752: }
753:
754: if (doEncrypt) {
755: unpackBlock(in, inOff);
756: encryptBlock(WorkingKey);
757: packBlock(out, outOff);
758: } else {
759: unpackBlock(in, inOff);
760: decryptBlock(WorkingKey);
761: packBlock(out, outOff);
762: }
763:
764: return BLOCK_SIZE;
765: }
766:
767: public final void reset() {
768: }
769:
770: private final void unpackBlock(byte[] bytes, int off) {
771: int index = off;
772:
773: C0 = (bytes[index++] & 0xff);
774: C0 |= (bytes[index++] & 0xff) << 8;
775: C0 |= (bytes[index++] & 0xff) << 16;
776: C0 |= bytes[index++] << 24;
777:
778: C1 = (bytes[index++] & 0xff);
779: C1 |= (bytes[index++] & 0xff) << 8;
780: C1 |= (bytes[index++] & 0xff) << 16;
781: C1 |= bytes[index++] << 24;
782:
783: C2 = (bytes[index++] & 0xff);
784: C2 |= (bytes[index++] & 0xff) << 8;
785: C2 |= (bytes[index++] & 0xff) << 16;
786: C2 |= bytes[index++] << 24;
787:
788: C3 = (bytes[index++] & 0xff);
789: C3 |= (bytes[index++] & 0xff) << 8;
790: C3 |= (bytes[index++] & 0xff) << 16;
791: C3 |= bytes[index++] << 24;
792: }
793:
794: private final void packBlock(byte[] bytes, int off) {
795: int index = off;
796:
797: bytes[index++] = (byte) C0;
798: bytes[index++] = (byte) (C0 >> 8);
799: bytes[index++] = (byte) (C0 >> 16);
800: bytes[index++] = (byte) (C0 >> 24);
801:
802: bytes[index++] = (byte) C1;
803: bytes[index++] = (byte) (C1 >> 8);
804: bytes[index++] = (byte) (C1 >> 16);
805: bytes[index++] = (byte) (C1 >> 24);
806:
807: bytes[index++] = (byte) C2;
808: bytes[index++] = (byte) (C2 >> 8);
809: bytes[index++] = (byte) (C2 >> 16);
810: bytes[index++] = (byte) (C2 >> 24);
811:
812: bytes[index++] = (byte) C3;
813: bytes[index++] = (byte) (C3 >> 8);
814: bytes[index++] = (byte) (C3 >> 16);
815: bytes[index++] = (byte) (C3 >> 24);
816: }
817:
818: private final void encryptBlock(int[][] KW) {
819: int r, r0, r1, r2, r3;
820:
821: C0 ^= KW[0][0];
822: C1 ^= KW[0][1];
823: C2 ^= KW[0][2];
824: C3 ^= KW[0][3];
825:
826: for (r = 1; r < ROUNDS - 1;) {
827: r0 = T0[C0 & 255] ^ T1[(C1 >> 8) & 255]
828: ^ T2[(C2 >> 16) & 255] ^ T3[(C3 >> 24) & 255]
829: ^ KW[r][0];
830: r1 = T0[C1 & 255] ^ T1[(C2 >> 8) & 255]
831: ^ T2[(C3 >> 16) & 255] ^ T3[(C0 >> 24) & 255]
832: ^ KW[r][1];
833: r2 = T0[C2 & 255] ^ T1[(C3 >> 8) & 255]
834: ^ T2[(C0 >> 16) & 255] ^ T3[(C1 >> 24) & 255]
835: ^ KW[r][2];
836: r3 = T0[C3 & 255] ^ T1[(C0 >> 8) & 255]
837: ^ T2[(C1 >> 16) & 255] ^ T3[(C2 >> 24) & 255]
838: ^ KW[r++][3];
839: C0 = T0[r0 & 255] ^ T1[(r1 >> 8) & 255]
840: ^ T2[(r2 >> 16) & 255] ^ T3[(r3 >> 24) & 255]
841: ^ KW[r][0];
842: C1 = T0[r1 & 255] ^ T1[(r2 >> 8) & 255]
843: ^ T2[(r3 >> 16) & 255] ^ T3[(r0 >> 24) & 255]
844: ^ KW[r][1];
845: C2 = T0[r2 & 255] ^ T1[(r3 >> 8) & 255]
846: ^ T2[(r0 >> 16) & 255] ^ T3[(r1 >> 24) & 255]
847: ^ KW[r][2];
848: C3 = T0[r3 & 255] ^ T1[(r0 >> 8) & 255]
849: ^ T2[(r1 >> 16) & 255] ^ T3[(r2 >> 24) & 255]
850: ^ KW[r++][3];
851: }
852:
853: r0 = T0[C0 & 255] ^ T1[(C1 >> 8) & 255] ^ T2[(C2 >> 16) & 255]
854: ^ T3[(C3 >> 24) & 255] ^ KW[r][0];
855: r1 = T0[C1 & 255] ^ T1[(C2 >> 8) & 255] ^ T2[(C3 >> 16) & 255]
856: ^ T3[(C0 >> 24) & 255] ^ KW[r][1];
857: r2 = T0[C2 & 255] ^ T1[(C3 >> 8) & 255] ^ T2[(C0 >> 16) & 255]
858: ^ T3[(C1 >> 24) & 255] ^ KW[r][2];
859: r3 = T0[C3 & 255] ^ T1[(C0 >> 8) & 255] ^ T2[(C1 >> 16) & 255]
860: ^ T3[(C2 >> 24) & 255] ^ KW[r++][3];
861:
862: // the final round's table is a simple function of S so we don't use a
863: // whole other four tables for it
864:
865: C0 = (S[r0 & 255] & 255) ^ ((S[(r1 >> 8) & 255] & 255) << 8)
866: ^ ((S[(r2 >> 16) & 255] & 255) << 16)
867: ^ (S[(r3 >> 24) & 255] << 24) ^ KW[r][0];
868: C1 = (S[r1 & 255] & 255) ^ ((S[(r2 >> 8) & 255] & 255) << 8)
869: ^ ((S[(r3 >> 16) & 255] & 255) << 16)
870: ^ (S[(r0 >> 24) & 255] << 24) ^ KW[r][1];
871: C2 = (S[r2 & 255] & 255) ^ ((S[(r3 >> 8) & 255] & 255) << 8)
872: ^ ((S[(r0 >> 16) & 255] & 255) << 16)
873: ^ (S[(r1 >> 24) & 255] << 24) ^ KW[r][2];
874: C3 = (S[r3 & 255] & 255) ^ ((S[(r0 >> 8) & 255] & 255) << 8)
875: ^ ((S[(r1 >> 16) & 255] & 255) << 16)
876: ^ (S[(r2 >> 24) & 255] << 24) ^ KW[r][3];
877:
878: }
879:
880: private final void decryptBlock(int[][] KW) {
881: int r, r0, r1, r2, r3;
882:
883: C0 ^= KW[ROUNDS][0];
884: C1 ^= KW[ROUNDS][1];
885: C2 ^= KW[ROUNDS][2];
886: C3 ^= KW[ROUNDS][3];
887:
888: for (r = ROUNDS - 1; r > 1;) {
889: r0 = Tinv0[C0 & 255] ^ Tinv1[(C3 >> 8) & 255]
890: ^ Tinv2[(C2 >> 16) & 255] ^ Tinv3[(C1 >> 24) & 255]
891: ^ KW[r][0];
892: r1 = Tinv0[C1 & 255] ^ Tinv1[(C0 >> 8) & 255]
893: ^ Tinv2[(C3 >> 16) & 255] ^ Tinv3[(C2 >> 24) & 255]
894: ^ KW[r][1];
895: r2 = Tinv0[C2 & 255] ^ Tinv1[(C1 >> 8) & 255]
896: ^ Tinv2[(C0 >> 16) & 255] ^ Tinv3[(C3 >> 24) & 255]
897: ^ KW[r][2];
898: r3 = Tinv0[C3 & 255] ^ Tinv1[(C2 >> 8) & 255]
899: ^ Tinv2[(C1 >> 16) & 255] ^ Tinv3[(C0 >> 24) & 255]
900: ^ KW[r--][3];
901: C0 = Tinv0[r0 & 255] ^ Tinv1[(r3 >> 8) & 255]
902: ^ Tinv2[(r2 >> 16) & 255] ^ Tinv3[(r1 >> 24) & 255]
903: ^ KW[r][0];
904: C1 = Tinv0[r1 & 255] ^ Tinv1[(r0 >> 8) & 255]
905: ^ Tinv2[(r3 >> 16) & 255] ^ Tinv3[(r2 >> 24) & 255]
906: ^ KW[r][1];
907: C2 = Tinv0[r2 & 255] ^ Tinv1[(r1 >> 8) & 255]
908: ^ Tinv2[(r0 >> 16) & 255] ^ Tinv3[(r3 >> 24) & 255]
909: ^ KW[r][2];
910: C3 = Tinv0[r3 & 255] ^ Tinv1[(r2 >> 8) & 255]
911: ^ Tinv2[(r1 >> 16) & 255] ^ Tinv3[(r0 >> 24) & 255]
912: ^ KW[r--][3];
913: }
914:
915: r0 = Tinv0[C0 & 255] ^ Tinv1[(C3 >> 8) & 255]
916: ^ Tinv2[(C2 >> 16) & 255] ^ Tinv3[(C1 >> 24) & 255]
917: ^ KW[r][0];
918: r1 = Tinv0[C1 & 255] ^ Tinv1[(C0 >> 8) & 255]
919: ^ Tinv2[(C3 >> 16) & 255] ^ Tinv3[(C2 >> 24) & 255]
920: ^ KW[r][1];
921: r2 = Tinv0[C2 & 255] ^ Tinv1[(C1 >> 8) & 255]
922: ^ Tinv2[(C0 >> 16) & 255] ^ Tinv3[(C3 >> 24) & 255]
923: ^ KW[r][2];
924: r3 = Tinv0[C3 & 255] ^ Tinv1[(C2 >> 8) & 255]
925: ^ Tinv2[(C1 >> 16) & 255] ^ Tinv3[(C0 >> 24) & 255]
926: ^ KW[r--][3];
927:
928: // the final round's table is a simple function of Si so we don't use a
929: // whole other four tables for it
930:
931: C0 = (Si[r0 & 255] & 255) ^ ((Si[(r3 >> 8) & 255] & 255) << 8)
932: ^ ((Si[(r2 >> 16) & 255] & 255) << 16)
933: ^ (Si[(r1 >> 24) & 255] << 24) ^ KW[0][0];
934: C1 = (Si[r1 & 255] & 255) ^ ((Si[(r0 >> 8) & 255] & 255) << 8)
935: ^ ((Si[(r3 >> 16) & 255] & 255) << 16)
936: ^ (Si[(r2 >> 24) & 255] << 24) ^ KW[0][1];
937: C2 = (Si[r2 & 255] & 255) ^ ((Si[(r1 >> 8) & 255] & 255) << 8)
938: ^ ((Si[(r0 >> 16) & 255] & 255) << 16)
939: ^ (Si[(r3 >> 24) & 255] << 24) ^ KW[0][2];
940: C3 = (Si[r3 & 255] & 255) ^ ((Si[(r2 >> 8) & 255] & 255) << 8)
941: ^ ((Si[(r1 >> 16) & 255] & 255) << 16)
942: ^ (Si[(r0 >> 24) & 255] << 24) ^ KW[0][3];
943: }
944:
945: public void transformBlock(byte[] src, int srcoff, byte[] dst,
946: int dstoff) {
947: processBlock(src, srcoff, dst, dstoff);
948: }
949: }
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