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[已解决]如何用python处理javascript 中>>>运算符

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发表于 2016-4-21 18:39:45 | 显示全部楼层 |阅读模式

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在用python写登陆4399的脚本中遇到的Des加密
没有合适的库能用
所以自己模拟，但是无法处理>>>运算符
请教大神
javascript源码如下
  1.       des_create_keys: function(key) {
  2.         var pc2bytes0  = [0,0x4,0x20000000,0x20000004,0x10000,0x10004,0x20010000,0x20010004,0x200,0x204,0x20000200,0x20000204,0x10200,0x10204,0x20010200,0x20010204],
  3.           pc2bytes1  = [0,0x1,0x100000,0x100001,0x4000000,0x4000001,0x4100000,0x4100001,0x100,0x101,0x100100,0x100101,0x4000100,0x4000101,0x4100100,0x4100101],
  4.           pc2bytes2  = [0,0x8,0x800,0x808,0x1000000,0x1000008,0x1000800,0x1000808,0,0x8,0x800,0x808,0x1000000,0x1000008,0x1000800,0x1000808],
  5.           pc2bytes3  = [0,0x200000,0x8000000,0x8200000,0x2000,0x202000,0x8002000,0x8202000,0x20000,0x220000,0x8020000,0x8220000,0x22000,0x222000,0x8022000,0x8222000],
  6.           pc2bytes4  = [0,0x40000,0x10,0x40010,0,0x40000,0x10,0x40010,0x1000,0x41000,0x1010,0x41010,0x1000,0x41000,0x1010,0x41010],
  7.           pc2bytes5  = [0,0x400,0x20,0x420,0,0x400,0x20,0x420,0x2000000,0x2000400,0x2000020,0x2000420,0x2000000,0x2000400,0x2000020,0x2000420],
  8.           pc2bytes6  = [0,0x10000000,0x80000,0x10080000,0x2,0x10000002,0x80002,0x10080002,0,0x10000000,0x80000,0x10080000,0x2,0x10000002,0x80002,0x10080002],
  9.           pc2bytes7  = [0,0x10000,0x800,/*0x10800*/67584,0x20000000,0x20010000,0x20000800,/*0x20010800*/536938496,0x20000,0x30000,0x20800,0x30800,0x20020000,0x20030000,0x20020800,0x20030800],
  10.           pc2bytes8  = [0,0x40000,0,0x40000,0x2,0x40002,0x2,0x40002,0x2000000,0x2040000,0x2000000,0x2040000,0x2000002,0x2040002,0x2000002,0x2040002],
  11.           pc2bytes9  = [0,0x10000000,0x8,0x10000008,0,0x10000000,0x8,0x10000008,0x400,0x10000400,0x408,0x10000408,0x400,0x10000400,0x408,0x10000408],
  12.           pc2bytes10 = [0,0x20,0,0x20,0x100000,0x100020,0x100000,0x100020,0x2000,0x2020,0x2000,0x2020,0x102000,0x102020,0x102000,0x102020],
  13.           pc2bytes11 = [0,0x1000000,0x200,0x1000200,0x200000,0x1200000,0x200200,0x1200200,0x4000000,0x5000000,0x4000200,0x5000200,0x4200000,0x5200000,0x4200200,0x5200200],
  14.           pc2bytes12 = [0,0x1000,0x8000000,0x8001000,0x80000,0x81000,0x8080000,0x8081000,0x10,0x1010,0x8000010,0x8001010,0x80010,0x81010,0x8080010,0x8081010],
  15.           pc2bytes13 = [0,0x4,0x100,0x104,0,0x4,0x100,0x104,0x1,0x5,0x101,0x105,0x1,0x5,0x101,0x105];
  16.         var iterations = key.length > 8 ? 3 : 1;
  17.         var keys = [32 * iterations];
  18.         var shifts = [0, 0, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 0];
  19.         var lefttemp, righttemp, m=0, n=0, temp;
  20.         for (var j=0; j<iterations; j++) {
  21.           var left = (key.charCodeAt(m++) << 24) | (key.charCodeAt(m++) << 16) | (key.charCodeAt(m++) << 8) | key.charCodeAt(m++),
  22.             right = (key.charCodeAt(m++) << 24) | (key.charCodeAt(m++) << 16) | (key.charCodeAt(m++) << 8) | key.charCodeAt(m++);
  23.           temp = ((left >>> 4) ^ right) & 0x0f0f0f0f; right ^= temp; left ^= (temp << 4);
  24.           temp = ((right >>> -16) ^ left) & 0x0000ffff; left ^= temp; right ^= (temp << -16);
  25.           temp = ((left >>> 2) ^ right) & 0x33333333; right ^= temp; left ^= (temp << 2);
  26.           temp = ((right >>> -16) ^ left) & 0x0000ffff; left ^= temp; right ^= (temp << -16);
  27.           temp = ((left >>> 1) ^ right) & 0x55555555; right ^= temp; left ^= (temp << 1);
  28.           temp = ((right >>> 8) ^ left) & 0x00ff00ff; left ^= temp; right ^= (temp << 8);
  29.           temp = ((left >>> 1) ^ right) & 0x55555555; right ^= temp; left ^= (temp << 1);
  30.           temp = (left << 8) | ((right >>> 20) & 0x000000f0);
  31.           left = (right << 24) | ((right << 8) & 0xff0000) | ((right >>> 8) & 0xff00) | ((right >>> 24) & 0xf0);
  32.           right = temp;
  33.           for (var i=0; i < shifts.length; i++) {
  34.             if (shifts[i]) {left = (left << 2) | (left >>> 26); right = (right << 2) | (right >>> 26);}
  35.             else {left = (left << 1) | (left >>> 27); right = (right << 1) | (right >>> 27);}
  36.             left &= -0xf; right &= -0xf;
  37.             lefttemp = pc2bytes0[left >>> 28] | pc2bytes1[(left >>> 24) & 0xf]
  38.               | pc2bytes2[(left >>> 20) & 0xf] | pc2bytes3[(left >>> 16) & 0xf]
  39.               | pc2bytes4[(left >>> 12) & 0xf] | pc2bytes5[(left >>> 8) & 0xf]
  40.               | pc2bytes6[(left >>> 4) & 0xf];
  41.             righttemp = pc2bytes7[right >>> 28] | pc2bytes8[(right >>> 24) & 0xf]
  42.               | pc2bytes9[(right >>> 20) & 0xf] | pc2bytes10[(right >>> 16) & 0xf]
  43.               | pc2bytes11[(right >>> 12) & 0xf] | pc2bytes12[(right >>> 8) & 0xf]
  44.               | pc2bytes13[(right >>> 4) & 0xf];
  45.             temp = ((righttemp >>> 16) ^ lefttemp) & 0x0000ffff;
  46.             keys[n++] = lefttemp ^ temp; keys[n++] = righttemp ^ (temp << 16);
  47.           }
  48.         }
  49.         return keys;
  50.       },
  51.       ------------------------------------------------
  52.       des: function(key, message, encrypt, mode, iv, padding) {
  53.         var n0x0 = /*0x108020*/parseInt('n6e8',36), n0x1 = /*0x108000*/parseInt('n6dc',36),
  54.           spfunction1 = [0x1010400,0,0x10000,0x1010404,0x1010004,0x10404,0x4,0x10000,0x400,0x1010400,0x1010404,0x400,0x1000404,0x1010004,0x1000000,0x4,0x404,0x1000400,0x1000400,0x10400,0x10400,0x1010000,0x1010000,0x1000404,0x10004,0x1000004,0x1000004,0x10004,0,0x404,0x10404,0x1000000,0x10000,0x1010404,0x4,0x1010000,0x1010400,0x1000000,0x1000000,0x400,0x1010004,0x10000,0x10400,0x1000004,0x400,0x4,0x1000404,0x10404,0x1010404,0x10004,0x1010000,0x1000404,0x1000004,0x404,0x10404,0x1010400,0x404,0x1000400,0x1000400,0,0x10004,0x10400,0,0x1010004],
  55.           spfunction2 = [-0x7fef7fe0,-0x7fff8000,0x8000,n0x0,0x100000,0x20,-0x7fefffe0,-0x7fff7fe0,-0x7fffffe0,-0x7fef7fe0,-0x7fef8000,-0x80000000,-0x7fff8000,0x100000,0x20,-0x7fefffe0,n0x1,0x100020,-0x7fff7fe0,0,-0x80000000,0x8000,n0x0,-0x7ff00000,0x100020,-0x7fffffe0,0,n0x1,0x8020,-0x7fef8000,-0x7ff00000,0x8020,0,n0x0,-0x7fefffe0,0x100000,-0x7fff7fe0,-0x7ff00000,-0x7fef8000,0x8000,-0x7ff00000,-0x7fff8000,0x20,-0x7fef7fe0,n0x0,0x20,0x8000,-0x80000000,0x8020,-0x7fef8000,0x100000,-0x7fffffe0,0x100020,-0x7fff7fe0,-0x7fffffe0,0x100020,n0x1,0,-0x7fff8000,0x8020,-0x80000000,-0x7fefffe0,-0x7fef7fe0,n0x1],
  56.           spfunction3 = [0x208,0x8020200,0,0x8020008,0x8000200,0,0x20208,0x8000200,0x20008,0x8000008,0x8000008,0x20000,0x8020208,0x20008,0x8020000,0x208,0x8000000,0x8,0x8020200,0x200,0x20200,0x8020000,0x8020008,0x20208,0x8000208,0x20200,0x20000,0x8000208,0x8,0x8020208,0x200,0x8000000,0x8020200,0x8000000,0x20008,0x208,0x20000,0x8020200,0x8000200,0,0x200,0x20008,0x8020208,0x8000200,0x8000008,0x200,0,0x8020008,0x8000208,0x20000,0x8000000,0x8020208,0x8,0x20208,0x20200,0x8000008,0x8020000,0x8000208,0x208,0x8020000,0x20208,0x8,0x8020008,0x20200],
  57.           spfunction4 = [0x802001,0x2081,0x2081,0x80,0x802080,0x800081,0x800001,0x2001,0,0x802000,0x802000,0x802081,0x81,0,0x800080,0x800001,0x1,0x2000,0x800000,0x802001,0x80,0x800000,0x2001,0x2080,0x800081,0x1,0x2080,0x800080,0x2000,0x802080,0x802081,0x81,0x800080,0x800001,0x802000,0x802081,0x81,0,0,0x802000,0x2080,0x800080,0x800081,0x1,0x802001,0x2081,0x2081,0x80,0x802081,0x81,0x1,0x2000,0x800001,0x2001,0x802080,0x800081,0x2001,0x2080,0x800000,0x802001,0x80,0x800000,0x2000,0x802080],
  58.           spfunction5 = [0x100,0x2080100,0x2080000,0x42000100,0x80000,0x100,0x40000000,0x2080000,0x40080100,0x80000,0x2000100,0x40080100,0x42000100,0x42080000,0x80100,0x40000000,0x2000000,0x40080000,0x40080000,0,0x40000100,0x42080100,0x42080100,0x2000100,0x42080000,0x40000100,0,0x42000000,0x2080100,0x2000000,0x42000000,0x80100,0x80000,0x42000100,0x100,0x2000000,0x40000000,0x2080000,0x42000100,0x40080100,0x2000100,0x40000000,0x42080000,0x2080100,0x40080100,0x100,0x2000000,0x42080000,0x42080100,0x80100,0x42000000,0x42080100,0x2080000,0,0x40080000,0x42000000,0x80100,0x2000100,0x40000100,0x80000,0,0x40080000,0x2080100,0x40000100],
  59.           spfunction6 = [0x20000010,0x20400000,0x4000,0x20404010,0x20400000,0x10,0x20404010,0x400000,0x20004000,0x404010,0x400000,0x20000010,0x400010,0x20004000,0x20000000,0x4010,0,0x400010,0x20004010,0x4000,0x404000,0x20004010,0x10,0x20400010,0x20400010,0,0x404010,0x20404000,0x4010,0x404000,0x20404000,0x20000000,0x20004000,0x10,0x20400010,0x404000,0x20404010,0x400000,0x4010,0x20000010,0x400000,0x20004000,0x20000000,0x4010,0x20000010,0x20404010,0x404000,0x20400000,0x404010,0x20404000,0,0x20400010,0x10,0x4000,0x20400000,0x404010,0x4000,0x400010,0x20004010,0,0x20404000,0x20000000,0x400010,0x20004010],
  60.           spfunction7 = [0x200000,0x4200002,0x4000802,0,0x800,0x4000802,0x200802,0x4200800,0x4200802,0x200000,0,0x4000002,0x2,0x4000000,0x4200002,0x802,0x4000800,0x200802,0x200002,0x4000800,0x4000002,0x4200000,0x4200800,0x200002,0x4200000,0x800,0x802,0x4200802,0x200800,0x2,0x4000000,0x200800,0x4000000,0x200800,0x200000,0x4000802,0x4000802,0x4200002,0x4200002,0x2,0x200002,0x4000000,0x4000800,0x200000,0x4200800,0x802,0x200802,0x4200800,0x802,0x4000002,0x4200802,0x4200000,0x200800,0,0x2,0x4200802,0,0x200802,0x4200000,0x800,0x4000002,0x4000800,0x800,0x200002],
  61.           spfunction8 = [0x10001040,0x1000,0x40000,0x10041040,0x10000000,0x10001040,0x40,0x10000000,0x40040,0x10040000,0x10041040,0x41000,0x10041000,0x41040,0x1000,0x40,0x10040000,0x10000040,0x10001000,0x1040,0x41000,0x40040,0x10040040,0x10041000,0x1040,0,0,0x10040040,0x10000040,0x10001000,0x41040,0x40000,0x41040,0x40000,0x10041000,0x1000,0x40,0x10040040,0x1000,0x41040,0x10001000,0x40,0x10000040,0x10040000,0x10040040,0x10000000,0x40000,0x10001040,0,0x10041040,0x40040,0x10000040,0x10040000,0x10001000,0x10001040,0,0x10041040,0x41000,0x41000,0x1040,0x1040,0x40040,0x10000000,0x10041000];
  62.         var keys = util.des_create_keys(key);
  63.         var m=0, i, j, temp, temp2, right1, right2, left, right, looping;
  64.         var cbcleft, cbcleft2, cbcright, cbcright2;
  65.         var endloop, loopinc;
  66.         var len = message.length;
  67.         var chunk = 0;
  68.         var iterations = keys.length == 32 ? 3 : 9;
  69.         if (iterations == 3) {looping = encrypt ? [0, 32, 2] : [30, -2, -2];}
  70.         else {looping = encrypt ? [0, 32, 2, 62, 30, -2, 64, 96, 2] : [94, 62, -2, 32, 64, 2, 30, -2, -2];}
  71.         if (padding == 2) message += "        ";
  72.         else if (padding == 1) {temp = 8-(len%8);
  73.                 message += String.fromCharCode (temp,temp,temp,temp,temp,temp,temp,temp);
  74.                 if (temp==8) len+=8;} //PKCS7 padding
  75.         else if (!padding) message += "\0\0\0\0\0\0\0\0";
  76.         var result = "", tempresult = "";
  77.         if (mode == 1) {
  78.           cbcleft = (iv.charCodeAt(m++) << 24) | (iv.charCodeAt(m++) << 16) | (iv.charCodeAt(m++) << 8) | iv.charCodeAt(m++);
  79.           cbcright = (iv.charCodeAt(m++) << 24) | (iv.charCodeAt(m++) << 16) | (iv.charCodeAt(m++) << 8) | iv.charCodeAt(m++);
  80.           m=0;
  81.         }
  82.         
  83.         while (m < len) {
  84.           left = (message.charCodeAt(m++) << 24) | (message.charCodeAt(m++) << 16) | (message.charCodeAt(m++) << 8) | message.charCodeAt(m++);
  85.           right = (message.charCodeAt(m++) << 24) | (message.charCodeAt(m++) << 16) | (message.charCodeAt(m++) << 8) | message.charCodeAt(m++);
  86.           if (mode == 1) {if (encrypt) {left ^= cbcleft; right ^= cbcright;} else {cbcleft2 = cbcleft; cbcright2 = cbcright; cbcleft = left; cbcright = right;}}
  87.           temp = ((left >>> 4) ^ right) & 0x0f0f0f0f; right ^= temp; left ^= (temp << 4);
  88.           temp = ((left >>> 16) ^ right) & 0x0000ffff; right ^= temp; left ^= (temp << 16);
  89.           temp = ((right >>> 2) ^ left) & 0x33333333; left ^= temp; right ^= (temp << 2);
  90.           temp = ((right >>> 8) ^ left) & 0x00ff00ff; left ^= temp; right ^= (temp << 8);
  91.           temp = ((left >>> 1) ^ right) & 0x55555555; right ^= temp; left ^= (temp << 1);
  92.           left = ((left << 1) | (left >>> 31));
  93.           right = ((right << 1) | (right >>> 31));
  94.           for (j=0; j<iterations; j+=3) {
  95.             endloop = looping[j+1];
  96.             loopinc = looping[j+2];
  97.             for (i=looping[j]; i!=endloop; i+=loopinc) {
  98.               right1 = right ^ keys[i];
  99.               right2 = ((right >>> 4) | (right << 28)) ^ keys[i+1];
  100.               temp = left;
  101.               left = right;
  102.               right = temp ^ (spfunction2[(right1 >>> 24) & 0x3f] | spfunction4[(right1 >>> 16) & 0x3f]
  103.                 | spfunction6[(right1 >>>  8) & 0x3f] | spfunction8[right1 & 0x3f]
  104.                 | spfunction1[(right2 >>> 24) & 0x3f] | spfunction3[(right2 >>> 16) & 0x3f]
  105.                 | spfunction5[(right2 >>>  8) & 0x3f] | spfunction7[right2 & 0x3f]);
  106.             }
  107.             temp = left; left = right; right = temp;
  108.           }
  109.           left = ((left >>> 1) | (left << 31));
  110.           right = ((right >>> 1) | (right << 31));
  111.           temp = ((left >>> 1) ^ right) & 0x55555555; right ^= temp; left ^= (temp << 1);
  112.           temp = ((right >>> 8) ^ left) & 0x00ff00ff; left ^= temp; right ^= (temp << 8);
  113.           temp = ((right >>> 2) ^ left) & 0x33333333; left ^= temp; right ^= (temp << 2);
  114.           temp = ((left >>> 16) ^ right) & 0x0000ffff; right ^= temp; left ^= (temp << 16);
  115.           temp = ((left >>> 4) ^ right) & 0x0f0f0f0f; right ^= temp; left ^= (temp << 4);
  116.           if (mode == 1) {if (encrypt) {cbcleft = left; cbcright = right;} else {left ^= cbcleft2; right ^= cbcright2;}}
  117.           tempresult += String.fromCharCode ((left>>>24), ((left>>>16) & 0xff), ((left>>>8) & 0xff), (left & 0xff), (right>>>24), ((right>>>16) & 0xff), ((right>>>8) & 0xff), (right & 0xff));

  119.           chunk += 8;
  120.           if (chunk == 512) {result += tempresult; tempresult = ""; chunk = 0;}
  121.         }
  122.         return result + tempresult;
  123.       },
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最佳答案
月排行榜 / 总排行榜
hldh214
2016-4-21 22:20:21
Python的位移运算符和JavaScript的无符号位移运算符的规则有些区别, 试试用Python调用js引擎把
小甲鱼最新课程 -> https://ilovefishc.com
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hldh214
发表于 2016-4-21 22:20:21 | 显示全部楼层    本楼为最佳答案   
Python的位移运算符和JavaScript的无符号位移运算符的规则有些区别, 试试用Python调用js引擎把
小甲鱼最新课程 -> https://ilovefishc.com
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