001: package org.bouncycastle.crypto.engines;
002:
003: import org.bouncycastle.crypto.BlockCipher;
004: import org.bouncycastle.crypto.CipherParameters;
005: import org.bouncycastle.crypto.DataLengthException;
006: import org.bouncycastle.crypto.params.KeyParameter;
007:
008: /**
009: * Implementation of the SEED algorithm as described in RFC 4009
010: */
011: public class SEEDEngine implements BlockCipher {
012: private final int BLOCK_SIZE = 16;
013:
014: private static final int[] SS0 = { 0x2989a1a8, 0x05858184,
015: 0x16c6d2d4, 0x13c3d3d0, 0x14445054, 0x1d0d111c, 0x2c8ca0ac,
016: 0x25052124, 0x1d4d515c, 0x03434340, 0x18081018, 0x1e0e121c,
017: 0x11415150, 0x3cccf0fc, 0x0acac2c8, 0x23436360, 0x28082028,
018: 0x04444044, 0x20002020, 0x1d8d919c, 0x20c0e0e0, 0x22c2e2e0,
019: 0x08c8c0c8, 0x17071314, 0x2585a1a4, 0x0f8f838c, 0x03030300,
020: 0x3b4b7378, 0x3b8bb3b8, 0x13031310, 0x12c2d2d0, 0x2ecee2ec,
021: 0x30407070, 0x0c8c808c, 0x3f0f333c, 0x2888a0a8, 0x32023230,
022: 0x1dcdd1dc, 0x36c6f2f4, 0x34447074, 0x2ccce0ec, 0x15859194,
023: 0x0b0b0308, 0x17475354, 0x1c4c505c, 0x1b4b5358, 0x3d8db1bc,
024: 0x01010100, 0x24042024, 0x1c0c101c, 0x33437370, 0x18889098,
025: 0x10001010, 0x0cccc0cc, 0x32c2f2f0, 0x19c9d1d8, 0x2c0c202c,
026: 0x27c7e3e4, 0x32427270, 0x03838380, 0x1b8b9398, 0x11c1d1d0,
027: 0x06868284, 0x09c9c1c8, 0x20406060, 0x10405050, 0x2383a3a0,
028: 0x2bcbe3e8, 0x0d0d010c, 0x3686b2b4, 0x1e8e929c, 0x0f4f434c,
029: 0x3787b3b4, 0x1a4a5258, 0x06c6c2c4, 0x38487078, 0x2686a2a4,
030: 0x12021210, 0x2f8fa3ac, 0x15c5d1d4, 0x21416160, 0x03c3c3c0,
031: 0x3484b0b4, 0x01414140, 0x12425250, 0x3d4d717c, 0x0d8d818c,
032: 0x08080008, 0x1f0f131c, 0x19899198, 0x00000000, 0x19091118,
033: 0x04040004, 0x13435350, 0x37c7f3f4, 0x21c1e1e0, 0x3dcdf1fc,
034: 0x36467274, 0x2f0f232c, 0x27072324, 0x3080b0b0, 0x0b8b8388,
035: 0x0e0e020c, 0x2b8ba3a8, 0x2282a2a0, 0x2e4e626c, 0x13839390,
036: 0x0d4d414c, 0x29496168, 0x3c4c707c, 0x09090108, 0x0a0a0208,
037: 0x3f8fb3bc, 0x2fcfe3ec, 0x33c3f3f0, 0x05c5c1c4, 0x07878384,
038: 0x14041014, 0x3ecef2fc, 0x24446064, 0x1eced2dc, 0x2e0e222c,
039: 0x0b4b4348, 0x1a0a1218, 0x06060204, 0x21012120, 0x2b4b6368,
040: 0x26466264, 0x02020200, 0x35c5f1f4, 0x12829290, 0x0a8a8288,
041: 0x0c0c000c, 0x3383b3b0, 0x3e4e727c, 0x10c0d0d0, 0x3a4a7278,
042: 0x07474344, 0x16869294, 0x25c5e1e4, 0x26062224, 0x00808080,
043: 0x2d8da1ac, 0x1fcfd3dc, 0x2181a1a0, 0x30003030, 0x37073334,
044: 0x2e8ea2ac, 0x36063234, 0x15051114, 0x22022220, 0x38083038,
045: 0x34c4f0f4, 0x2787a3a4, 0x05454144, 0x0c4c404c, 0x01818180,
046: 0x29c9e1e8, 0x04848084, 0x17879394, 0x35053134, 0x0bcbc3c8,
047: 0x0ecec2cc, 0x3c0c303c, 0x31417170, 0x11011110, 0x07c7c3c4,
048: 0x09898188, 0x35457174, 0x3bcbf3f8, 0x1acad2d8, 0x38c8f0f8,
049: 0x14849094, 0x19495158, 0x02828280, 0x04c4c0c4, 0x3fcff3fc,
050: 0x09494148, 0x39093138, 0x27476364, 0x00c0c0c0, 0x0fcfc3cc,
051: 0x17c7d3d4, 0x3888b0b8, 0x0f0f030c, 0x0e8e828c, 0x02424240,
052: 0x23032320, 0x11819190, 0x2c4c606c, 0x1bcbd3d8, 0x2484a0a4,
053: 0x34043034, 0x31c1f1f0, 0x08484048, 0x02c2c2c0, 0x2f4f636c,
054: 0x3d0d313c, 0x2d0d212c, 0x00404040, 0x3e8eb2bc, 0x3e0e323c,
055: 0x3c8cb0bc, 0x01c1c1c0, 0x2a8aa2a8, 0x3a8ab2b8, 0x0e4e424c,
056: 0x15455154, 0x3b0b3338, 0x1cccd0dc, 0x28486068, 0x3f4f737c,
057: 0x1c8c909c, 0x18c8d0d8, 0x0a4a4248, 0x16465254, 0x37477374,
058: 0x2080a0a0, 0x2dcde1ec, 0x06464244, 0x3585b1b4, 0x2b0b2328,
059: 0x25456164, 0x3acaf2f8, 0x23c3e3e0, 0x3989b1b8, 0x3181b1b0,
060: 0x1f8f939c, 0x1e4e525c, 0x39c9f1f8, 0x26c6e2e4, 0x3282b2b0,
061: 0x31013130, 0x2acae2e8, 0x2d4d616c, 0x1f4f535c, 0x24c4e0e4,
062: 0x30c0f0f0, 0x0dcdc1cc, 0x08888088, 0x16061214, 0x3a0a3238,
063: 0x18485058, 0x14c4d0d4, 0x22426260, 0x29092128, 0x07070304,
064: 0x33033330, 0x28c8e0e8, 0x1b0b1318, 0x05050104, 0x39497178,
065: 0x10809090, 0x2a4a6268, 0x2a0a2228, 0x1a8a9298 };
066:
067: private static final int[] SS1 = {
068:
069: 0x38380830, 0xe828c8e0, 0x2c2d0d21, 0xa42686a2, 0xcc0fcfc3,
070: 0xdc1eced2, 0xb03383b3, 0xb83888b0, 0xac2f8fa3, 0x60204060,
071: 0x54154551, 0xc407c7c3, 0x44044440, 0x6c2f4f63, 0x682b4b63,
072: 0x581b4b53, 0xc003c3c3, 0x60224262, 0x30330333, 0xb43585b1,
073: 0x28290921, 0xa02080a0, 0xe022c2e2, 0xa42787a3, 0xd013c3d3,
074: 0x90118191, 0x10110111, 0x04060602, 0x1c1c0c10, 0xbc3c8cb0,
075: 0x34360632, 0x480b4b43, 0xec2fcfe3, 0x88088880, 0x6c2c4c60,
076: 0xa82888a0, 0x14170713, 0xc404c4c0, 0x14160612, 0xf434c4f0,
077: 0xc002c2c2, 0x44054541, 0xe021c1e1, 0xd416c6d2, 0x3c3f0f33,
078: 0x3c3d0d31, 0x8c0e8e82, 0x98188890, 0x28280820, 0x4c0e4e42,
079: 0xf436c6f2, 0x3c3e0e32, 0xa42585a1, 0xf839c9f1, 0x0c0d0d01,
080: 0xdc1fcfd3, 0xd818c8d0, 0x282b0b23, 0x64264662, 0x783a4a72,
081: 0x24270723, 0x2c2f0f23, 0xf031c1f1, 0x70324272, 0x40024242,
082: 0xd414c4d0, 0x40014141, 0xc000c0c0, 0x70334373, 0x64274763,
083: 0xac2c8ca0, 0x880b8b83, 0xf437c7f3, 0xac2d8da1, 0x80008080,
084: 0x1c1f0f13, 0xc80acac2, 0x2c2c0c20, 0xa82a8aa2, 0x34340430,
085: 0xd012c2d2, 0x080b0b03, 0xec2ecee2, 0xe829c9e1, 0x5c1d4d51,
086: 0x94148490, 0x18180810, 0xf838c8f0, 0x54174753, 0xac2e8ea2,
087: 0x08080800, 0xc405c5c1, 0x10130313, 0xcc0dcdc1, 0x84068682,
088: 0xb83989b1, 0xfc3fcff3, 0x7c3d4d71, 0xc001c1c1, 0x30310131,
089: 0xf435c5f1, 0x880a8a82, 0x682a4a62, 0xb03181b1, 0xd011c1d1,
090: 0x20200020, 0xd417c7d3, 0x00020202, 0x20220222, 0x04040400,
091: 0x68284860, 0x70314171, 0x04070703, 0xd81bcbd3, 0x9c1d8d91,
092: 0x98198991, 0x60214161, 0xbc3e8eb2, 0xe426c6e2, 0x58194951,
093: 0xdc1dcdd1, 0x50114151, 0x90108090, 0xdc1cccd0, 0x981a8a92,
094: 0xa02383a3, 0xa82b8ba3, 0xd010c0d0, 0x80018181, 0x0c0f0f03,
095: 0x44074743, 0x181a0a12, 0xe023c3e3, 0xec2ccce0, 0x8c0d8d81,
096: 0xbc3f8fb3, 0x94168692, 0x783b4b73, 0x5c1c4c50, 0xa02282a2,
097: 0xa02181a1, 0x60234363, 0x20230323, 0x4c0d4d41, 0xc808c8c0,
098: 0x9c1e8e92, 0x9c1c8c90, 0x383a0a32, 0x0c0c0c00, 0x2c2e0e22,
099: 0xb83a8ab2, 0x6c2e4e62, 0x9c1f8f93, 0x581a4a52, 0xf032c2f2,
100: 0x90128292, 0xf033c3f3, 0x48094941, 0x78384870, 0xcc0cccc0,
101: 0x14150511, 0xf83bcbf3, 0x70304070, 0x74354571, 0x7c3f4f73,
102: 0x34350531, 0x10100010, 0x00030303, 0x64244460, 0x6c2d4d61,
103: 0xc406c6c2, 0x74344470, 0xd415c5d1, 0xb43484b0, 0xe82acae2,
104: 0x08090901, 0x74364672, 0x18190911, 0xfc3ecef2, 0x40004040,
105: 0x10120212, 0xe020c0e0, 0xbc3d8db1, 0x04050501, 0xf83acaf2,
106: 0x00010101, 0xf030c0f0, 0x282a0a22, 0x5c1e4e52, 0xa82989a1,
107: 0x54164652, 0x40034343, 0x84058581, 0x14140410, 0x88098981,
108: 0x981b8b93, 0xb03080b0, 0xe425c5e1, 0x48084840, 0x78394971,
109: 0x94178793, 0xfc3cccf0, 0x1c1e0e12, 0x80028282, 0x20210121,
110: 0x8c0c8c80, 0x181b0b13, 0x5c1f4f53, 0x74374773, 0x54144450,
111: 0xb03282b2, 0x1c1d0d11, 0x24250521, 0x4c0f4f43, 0x00000000,
112: 0x44064642, 0xec2dcde1, 0x58184850, 0x50124252, 0xe82bcbe3,
113: 0x7c3e4e72, 0xd81acad2, 0xc809c9c1, 0xfc3dcdf1, 0x30300030,
114: 0x94158591, 0x64254561, 0x3c3c0c30, 0xb43686b2, 0xe424c4e0,
115: 0xb83b8bb3, 0x7c3c4c70, 0x0c0e0e02, 0x50104050, 0x38390931,
116: 0x24260622, 0x30320232, 0x84048480, 0x68294961, 0x90138393,
117: 0x34370733, 0xe427c7e3, 0x24240420, 0xa42484a0, 0xc80bcbc3,
118: 0x50134353, 0x080a0a02, 0x84078783, 0xd819c9d1, 0x4c0c4c40,
119: 0x80038383, 0x8c0f8f83, 0xcc0ecec2, 0x383b0b33, 0x480a4a42,
120: 0xb43787b3 };
121:
122: private static final int[] SS2 = {
123:
124: 0xa1a82989, 0x81840585, 0xd2d416c6, 0xd3d013c3, 0x50541444,
125: 0x111c1d0d, 0xa0ac2c8c, 0x21242505, 0x515c1d4d, 0x43400343,
126: 0x10181808, 0x121c1e0e, 0x51501141, 0xf0fc3ccc, 0xc2c80aca,
127: 0x63602343, 0x20282808, 0x40440444, 0x20202000, 0x919c1d8d,
128: 0xe0e020c0, 0xe2e022c2, 0xc0c808c8, 0x13141707, 0xa1a42585,
129: 0x838c0f8f, 0x03000303, 0x73783b4b, 0xb3b83b8b, 0x13101303,
130: 0xd2d012c2, 0xe2ec2ece, 0x70703040, 0x808c0c8c, 0x333c3f0f,
131: 0xa0a82888, 0x32303202, 0xd1dc1dcd, 0xf2f436c6, 0x70743444,
132: 0xe0ec2ccc, 0x91941585, 0x03080b0b, 0x53541747, 0x505c1c4c,
133: 0x53581b4b, 0xb1bc3d8d, 0x01000101, 0x20242404, 0x101c1c0c,
134: 0x73703343, 0x90981888, 0x10101000, 0xc0cc0ccc, 0xf2f032c2,
135: 0xd1d819c9, 0x202c2c0c, 0xe3e427c7, 0x72703242, 0x83800383,
136: 0x93981b8b, 0xd1d011c1, 0x82840686, 0xc1c809c9, 0x60602040,
137: 0x50501040, 0xa3a02383, 0xe3e82bcb, 0x010c0d0d, 0xb2b43686,
138: 0x929c1e8e, 0x434c0f4f, 0xb3b43787, 0x52581a4a, 0xc2c406c6,
139: 0x70783848, 0xa2a42686, 0x12101202, 0xa3ac2f8f, 0xd1d415c5,
140: 0x61602141, 0xc3c003c3, 0xb0b43484, 0x41400141, 0x52501242,
141: 0x717c3d4d, 0x818c0d8d, 0x00080808, 0x131c1f0f, 0x91981989,
142: 0x00000000, 0x11181909, 0x00040404, 0x53501343, 0xf3f437c7,
143: 0xe1e021c1, 0xf1fc3dcd, 0x72743646, 0x232c2f0f, 0x23242707,
144: 0xb0b03080, 0x83880b8b, 0x020c0e0e, 0xa3a82b8b, 0xa2a02282,
145: 0x626c2e4e, 0x93901383, 0x414c0d4d, 0x61682949, 0x707c3c4c,
146: 0x01080909, 0x02080a0a, 0xb3bc3f8f, 0xe3ec2fcf, 0xf3f033c3,
147: 0xc1c405c5, 0x83840787, 0x10141404, 0xf2fc3ece, 0x60642444,
148: 0xd2dc1ece, 0x222c2e0e, 0x43480b4b, 0x12181a0a, 0x02040606,
149: 0x21202101, 0x63682b4b, 0x62642646, 0x02000202, 0xf1f435c5,
150: 0x92901282, 0x82880a8a, 0x000c0c0c, 0xb3b03383, 0x727c3e4e,
151: 0xd0d010c0, 0x72783a4a, 0x43440747, 0x92941686, 0xe1e425c5,
152: 0x22242606, 0x80800080, 0xa1ac2d8d, 0xd3dc1fcf, 0xa1a02181,
153: 0x30303000, 0x33343707, 0xa2ac2e8e, 0x32343606, 0x11141505,
154: 0x22202202, 0x30383808, 0xf0f434c4, 0xa3a42787, 0x41440545,
155: 0x404c0c4c, 0x81800181, 0xe1e829c9, 0x80840484, 0x93941787,
156: 0x31343505, 0xc3c80bcb, 0xc2cc0ece, 0x303c3c0c, 0x71703141,
157: 0x11101101, 0xc3c407c7, 0x81880989, 0x71743545, 0xf3f83bcb,
158: 0xd2d81aca, 0xf0f838c8, 0x90941484, 0x51581949, 0x82800282,
159: 0xc0c404c4, 0xf3fc3fcf, 0x41480949, 0x31383909, 0x63642747,
160: 0xc0c000c0, 0xc3cc0fcf, 0xd3d417c7, 0xb0b83888, 0x030c0f0f,
161: 0x828c0e8e, 0x42400242, 0x23202303, 0x91901181, 0x606c2c4c,
162: 0xd3d81bcb, 0xa0a42484, 0x30343404, 0xf1f031c1, 0x40480848,
163: 0xc2c002c2, 0x636c2f4f, 0x313c3d0d, 0x212c2d0d, 0x40400040,
164: 0xb2bc3e8e, 0x323c3e0e, 0xb0bc3c8c, 0xc1c001c1, 0xa2a82a8a,
165: 0xb2b83a8a, 0x424c0e4e, 0x51541545, 0x33383b0b, 0xd0dc1ccc,
166: 0x60682848, 0x737c3f4f, 0x909c1c8c, 0xd0d818c8, 0x42480a4a,
167: 0x52541646, 0x73743747, 0xa0a02080, 0xe1ec2dcd, 0x42440646,
168: 0xb1b43585, 0x23282b0b, 0x61642545, 0xf2f83aca, 0xe3e023c3,
169: 0xb1b83989, 0xb1b03181, 0x939c1f8f, 0x525c1e4e, 0xf1f839c9,
170: 0xe2e426c6, 0xb2b03282, 0x31303101, 0xe2e82aca, 0x616c2d4d,
171: 0x535c1f4f, 0xe0e424c4, 0xf0f030c0, 0xc1cc0dcd, 0x80880888,
172: 0x12141606, 0x32383a0a, 0x50581848, 0xd0d414c4, 0x62602242,
173: 0x21282909, 0x03040707, 0x33303303, 0xe0e828c8, 0x13181b0b,
174: 0x01040505, 0x71783949, 0x90901080, 0x62682a4a, 0x22282a0a,
175: 0x92981a8a };
176:
177: private static final int[] SS3 = {
178:
179: 0x08303838, 0xc8e0e828, 0x0d212c2d, 0x86a2a426, 0xcfc3cc0f,
180: 0xced2dc1e, 0x83b3b033, 0x88b0b838, 0x8fa3ac2f, 0x40606020,
181: 0x45515415, 0xc7c3c407, 0x44404404, 0x4f636c2f, 0x4b63682b,
182: 0x4b53581b, 0xc3c3c003, 0x42626022, 0x03333033, 0x85b1b435,
183: 0x09212829, 0x80a0a020, 0xc2e2e022, 0x87a3a427, 0xc3d3d013,
184: 0x81919011, 0x01111011, 0x06020406, 0x0c101c1c, 0x8cb0bc3c,
185: 0x06323436, 0x4b43480b, 0xcfe3ec2f, 0x88808808, 0x4c606c2c,
186: 0x88a0a828, 0x07131417, 0xc4c0c404, 0x06121416, 0xc4f0f434,
187: 0xc2c2c002, 0x45414405, 0xc1e1e021, 0xc6d2d416, 0x0f333c3f,
188: 0x0d313c3d, 0x8e828c0e, 0x88909818, 0x08202828, 0x4e424c0e,
189: 0xc6f2f436, 0x0e323c3e, 0x85a1a425, 0xc9f1f839, 0x0d010c0d,
190: 0xcfd3dc1f, 0xc8d0d818, 0x0b23282b, 0x46626426, 0x4a72783a,
191: 0x07232427, 0x0f232c2f, 0xc1f1f031, 0x42727032, 0x42424002,
192: 0xc4d0d414, 0x41414001, 0xc0c0c000, 0x43737033, 0x47636427,
193: 0x8ca0ac2c, 0x8b83880b, 0xc7f3f437, 0x8da1ac2d, 0x80808000,
194: 0x0f131c1f, 0xcac2c80a, 0x0c202c2c, 0x8aa2a82a, 0x04303434,
195: 0xc2d2d012, 0x0b03080b, 0xcee2ec2e, 0xc9e1e829, 0x4d515c1d,
196: 0x84909414, 0x08101818, 0xc8f0f838, 0x47535417, 0x8ea2ac2e,
197: 0x08000808, 0xc5c1c405, 0x03131013, 0xcdc1cc0d, 0x86828406,
198: 0x89b1b839, 0xcff3fc3f, 0x4d717c3d, 0xc1c1c001, 0x01313031,
199: 0xc5f1f435, 0x8a82880a, 0x4a62682a, 0x81b1b031, 0xc1d1d011,
200: 0x00202020, 0xc7d3d417, 0x02020002, 0x02222022, 0x04000404,
201: 0x48606828, 0x41717031, 0x07030407, 0xcbd3d81b, 0x8d919c1d,
202: 0x89919819, 0x41616021, 0x8eb2bc3e, 0xc6e2e426, 0x49515819,
203: 0xcdd1dc1d, 0x41515011, 0x80909010, 0xccd0dc1c, 0x8a92981a,
204: 0x83a3a023, 0x8ba3a82b, 0xc0d0d010, 0x81818001, 0x0f030c0f,
205: 0x47434407, 0x0a12181a, 0xc3e3e023, 0xcce0ec2c, 0x8d818c0d,
206: 0x8fb3bc3f, 0x86929416, 0x4b73783b, 0x4c505c1c, 0x82a2a022,
207: 0x81a1a021, 0x43636023, 0x03232023, 0x4d414c0d, 0xc8c0c808,
208: 0x8e929c1e, 0x8c909c1c, 0x0a32383a, 0x0c000c0c, 0x0e222c2e,
209: 0x8ab2b83a, 0x4e626c2e, 0x8f939c1f, 0x4a52581a, 0xc2f2f032,
210: 0x82929012, 0xc3f3f033, 0x49414809, 0x48707838, 0xccc0cc0c,
211: 0x05111415, 0xcbf3f83b, 0x40707030, 0x45717435, 0x4f737c3f,
212: 0x05313435, 0x00101010, 0x03030003, 0x44606424, 0x4d616c2d,
213: 0xc6c2c406, 0x44707434, 0xc5d1d415, 0x84b0b434, 0xcae2e82a,
214: 0x09010809, 0x46727436, 0x09111819, 0xcef2fc3e, 0x40404000,
215: 0x02121012, 0xc0e0e020, 0x8db1bc3d, 0x05010405, 0xcaf2f83a,
216: 0x01010001, 0xc0f0f030, 0x0a22282a, 0x4e525c1e, 0x89a1a829,
217: 0x46525416, 0x43434003, 0x85818405, 0x04101414, 0x89818809,
218: 0x8b93981b, 0x80b0b030, 0xc5e1e425, 0x48404808, 0x49717839,
219: 0x87939417, 0xccf0fc3c, 0x0e121c1e, 0x82828002, 0x01212021,
220: 0x8c808c0c, 0x0b13181b, 0x4f535c1f, 0x47737437, 0x44505414,
221: 0x82b2b032, 0x0d111c1d, 0x05212425, 0x4f434c0f, 0x00000000,
222: 0x46424406, 0xcde1ec2d, 0x48505818, 0x42525012, 0xcbe3e82b,
223: 0x4e727c3e, 0xcad2d81a, 0xc9c1c809, 0xcdf1fc3d, 0x00303030,
224: 0x85919415, 0x45616425, 0x0c303c3c, 0x86b2b436, 0xc4e0e424,
225: 0x8bb3b83b, 0x4c707c3c, 0x0e020c0e, 0x40505010, 0x09313839,
226: 0x06222426, 0x02323032, 0x84808404, 0x49616829, 0x83939013,
227: 0x07333437, 0xc7e3e427, 0x04202424, 0x84a0a424, 0xcbc3c80b,
228: 0x43535013, 0x0a02080a, 0x87838407, 0xc9d1d819, 0x4c404c0c,
229: 0x83838003, 0x8f838c0f, 0xcec2cc0e, 0x0b33383b, 0x4a42480a,
230: 0x87b3b437 };
231:
232: private static final int[] KC = { 0x9e3779b9, 0x3c6ef373,
233: 0x78dde6e6, 0xf1bbcdcc, 0xe3779b99, 0xc6ef3733, 0x8dde6e67,
234: 0x1bbcdccf, 0x3779b99e, 0x6ef3733c, 0xdde6e678, 0xbbcdccf1,
235: 0x779b99e3, 0xef3733c6, 0xde6e678d, 0xbcdccf1b };
236:
237: private int[] wKey;
238: private boolean forEncryption;
239:
240: public void init(boolean forEncryption, CipherParameters params)
241: throws IllegalArgumentException {
242: this .forEncryption = forEncryption;
243: wKey = createWorkingKey(((KeyParameter) params).getKey());
244: }
245:
246: public String getAlgorithmName() {
247: return "SEED";
248: }
249:
250: public int getBlockSize() {
251: return BLOCK_SIZE;
252: }
253:
254: public int processBlock(byte[] in, int inOff, byte[] out, int outOff)
255: throws DataLengthException, IllegalStateException {
256: if (wKey == null) {
257: throw new IllegalStateException(
258: "SEED engine not initialised");
259: }
260:
261: if (inOff + BLOCK_SIZE > in.length) {
262: throw new DataLengthException("input buffer too short");
263: }
264:
265: if (outOff + BLOCK_SIZE > out.length) {
266: throw new DataLengthException("output buffer too short");
267: }
268:
269: long l = bytesToLong(in, inOff + 0);
270: long r = bytesToLong(in, inOff + 8);
271:
272: if (forEncryption) {
273: for (int i = 0; i < 16; i++) {
274: long nl = r;
275:
276: r = l ^ F(wKey[2 * i], wKey[(2 * i) + 1], r);
277: l = nl;
278: }
279: } else {
280: for (int i = 15; i >= 0; i--) {
281: long nl = r;
282:
283: r = l ^ F(wKey[2 * i], wKey[(2 * i) + 1], r);
284: l = nl;
285: }
286: }
287:
288: longToBytes(out, outOff + 0, r);
289: longToBytes(out, outOff + 8, l);
290:
291: return BLOCK_SIZE;
292: }
293:
294: public void reset() {
295: }
296:
297: private int[] createWorkingKey(byte[] inKey) {
298: int[] key = new int[32];
299: long lower = bytesToLong(inKey, 0);
300: long upper = bytesToLong(inKey, 8);
301:
302: int key0 = extractW0(lower);
303: int key1 = extractW1(lower);
304: int key2 = extractW0(upper);
305: int key3 = extractW1(upper);
306:
307: for (int i = 0; i < 16; i++) {
308: key[2 * i] = G(key0 + key2 - KC[i]);
309: key[2 * i + 1] = G(key1 - key3 + KC[i]);
310:
311: if (i % 2 == 0) {
312: lower = rotateRight8(lower);
313: key0 = extractW0(lower);
314: key1 = extractW1(lower);
315: } else {
316: upper = rotateLeft8(upper);
317: key2 = extractW0(upper);
318: key3 = extractW1(upper);
319: }
320: }
321:
322: return key;
323: }
324:
325: private int extractW1(long lVal) {
326: return (int) lVal;
327: }
328:
329: private int extractW0(long lVal) {
330: return (int) (lVal >> 32);
331: }
332:
333: private long rotateLeft8(long x) {
334: return (x << 8) | (x >>> 56);
335: }
336:
337: private long rotateRight8(long x) {
338: return (x >>> 8) | (x << 56);
339: }
340:
341: private long bytesToLong(byte[] src, int srcOff) {
342: long word = 0;
343:
344: for (int i = 0; i <= 7; i++) {
345: word = (word << 8) + (src[i + srcOff] & 0xff);
346: }
347:
348: return word;
349: }
350:
351: private void longToBytes(byte[] dest, int destOff, long value) {
352: for (int i = 0; i < 8; i++) {
353: dest[i + destOff] = (byte) (value >> ((7 - i) * 8));
354: }
355: }
356:
357: private int G(int x) {
358: return SS0[x & 0xff] ^ SS1[(x >> 8) & 0xff]
359: ^ SS2[(x >> 16) & 0xff] ^ SS3[(x >> 24) & 0xff];
360: }
361:
362: private long F(int ki0, int ki1, long r) {
363: int r0 = (int) (r >> 32);
364: int r1 = (int) r;
365: int rd1 = phaseCalc2(r0, ki0, r1, ki1);
366: int rd0 = rd1 + phaseCalc1(r0, ki0, r1, ki1);
367:
368: return ((long) rd0 << 32) | (rd1 & 0xffffffffL);
369: }
370:
371: private int phaseCalc1(int r0, int ki0, int r1, int ki1) {
372: return G(G((r0 ^ ki0) ^ (r1 ^ ki1)) + (r0 ^ ki0));
373: }
374:
375: private int phaseCalc2(int r0, int ki0, int r1, int ki1) {
376: return G(phaseCalc1(r0, ki0, r1, ki1)
377: + G((r0 ^ ki0) ^ (r1 ^ ki1)));
378: }
379: }
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