大學(xué)計算機專業(yè)－kasumi算法的研究與vc實現(xiàn)(參考版)
2024-12-07 16:58本頁面
【正文】 每輪的密鑰通過兩組 16 比特的數(shù)組Kj和 Kj, (j=1 到 8)以如下的方法生成： 128 比特的密鑰被分為每組 16 比特的8個組： K=K1||K2||K3||K4||K5||K6||K7||K8 第二組密鑰 Kj， 由 Kj 以如下方法生成： Kj， =Kj Cj（ j=1 到 8， Cj 是表 21 所示的 16 進制的常量） 表 21 常量參數(shù) 每輪的密鑰由 Kj 和 Kj， 以表 22 所定義的規(guī)則生成。 S9[] = { 167,239,161,379,391,334, 9,338, 38,226, 48,358,452,385, 90,397, 183,253,147,331,415,340, 51,362,306,500,262, 82,216,159,356,177, 175,241,489, 37,206, 17, 0,333, 44,254,378, 58,143,220, 81,400, 95, 3,315,245, 54,235,218,405,472,264,172,494,371,290,399, 76, 165,197,395,121,257,480,423,212,240, 28,462,176,406,507,288,223, 501,407,249,265, 89,186,221,428,164, 74,440,196,458,421,350,163, 232,158,134,354, 13,250,491,142,191, 69,193,425,152,227,366,135, 344,300,276,242,437,320,113,278, 11,243, 87,317, 36, 93,496, 27, 487,446,482, 41, 68,156,457,131,326,403,339, 20, 39,115,442,124, 475,384,508, 53,112,170,479,151,126,169, 73,268,279,321,168,364, 363,292, 46,499,393,327,324, 24,456,267,157,460,488,426,309,229, 439,506,208,271,349,401,434,236, 16,209,359, 52, 56,120,199,277, 465,416,252,287,246, 6, 83,305,420,345,153,502, 65, 61,244,282, 173,222,418, 67,386,368,261,101,476,291,195,430, 49, 79,166,330, 280,383,373,128,382,408,155,495,367,388,274,107,459,417, 62,454, 132,225,203,316,234, 14,301, 91,503,286,424,211,347,307,140,374, 35,103,125,427, 19,214,453,146,498,314,444,230,256,329,198,285, 50,116, 78,410, 10,205,510,171,231, 45,139,467, 29, 86,505, 32, 72, 26,342,150,313,490,431,238,411,325,149,473, 40,119,174,355, 185,233,389, 71,448,273,372, 55,110,178,322, 12,469,392,369,190, 1,109,375,137,181, 88, 75,308,260,484, 98,272,370,275,412,111, 336,318, 4,504,492,259,304, 77,337,435, 21,357,303,332,483, 18, 47, 85, 25,497,474,289,100,269,296,478,270,106, 31,104,433, 84, 414,486,394, 96, 99,154,511,148,413,361,409,255,162,215,302,201, 266,351,343,144,441,365,108,298,251, 34,182,509,138,210,335,133, 311,352,328,141,396,346,123,319,450,281,429,228,443,481, 92,404, 485,422,248,297, 23,213,130,466, 22,217,283, 70,294,360,419,127, 312,377, 7,468,194, 2,117,295,463,258,224,447,247,187, 80,398, 284,353,105,390,299,471,470,184, 57,200,348, 63,204,188, 33,451, 97, 30,310,219, 94,160,129,493, 64,179,263,102,189,207,114,402, 438,477,387,122,192, 42,381, 5,145,118,180,449,293,323,136,380, 43, 66, 60,455,341,445,202,432, 8,237, 15,376,436,464, 59,461}。在本設(shè)計中由于考慮到加密的速度，所以才用了查表的方法來實現(xiàn)。 輸出的左半部 L， 由輸出數(shù)據(jù)的右半部 R， 與子密鑰的右半部 KLi， 2進行按位或的運算，再進行循環(huán)左移一位，然后再與輸入數(shù)據(jù)的左半部 L 進行異或（模 2 加）運算得到。具體實現(xiàn)見圖 23。 FL 函數(shù) 函數(shù) FL包含一個 32 比特的輸入數(shù)據(jù) Indata 和一個 32 比特的子密鑰 KLi。 48 比 特的子密鑰被分為三組 16 比特的子 密鑰： KOi=KOi,1||KOi,2||KO
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