1.C# 实现
C#版DES加解密方法及相关函数 1 #region C#版DES加解密方法及相关函数 2 3 ///4 /// DES 加密 5 /// 6 /// 待加密的字符串 7 /// 密钥 8 ///9 public string EncryptDES(string beinetstr, string beinetkey) 10 { 11 if (string.IsNullOrEmpty(beinetkey)) 12 return string.Empty; 13 14 return stringToHex(des(beinetkey, beinetstr, true, false, string.Empty)); 15 } 16 17 /// 18 /// DES 解密 19 /// 20 /// 待解密的字符串 21 /// 密钥 22 ///23 public string DecryptDES(string beinetstr, string beinetkey) 24 { 25 if (string.IsNullOrEmpty(beinetkey)) 26 return null; 27 string ret = des(beinetkey, HexTostring(beinetstr), false, false, string.Empty); 28 return ret; 29 } 30 31 /// 32 /// 把字符串转换为16进制字符串 33 /// 如：a变成61（即10进制的97）；abc变成616263 34 /// 35 /// 36 ///37 public string stringToHex(string s) 38 { 39 string r = ""; 40 string[] hexes = { "0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "a", "b", "c", "d", "e", "f" }; 41 for (int i = 0; i < (s.Length); i++) 42 { 43 r += hexes[RM(s[i], 4)] + hexes[s[i] & 0xf]; 44 } 45 return r; 46 } 47 48 /// 49 /// 16进制字符串转换为字符串 50 /// 如：61（即10进制的97）变成a；616263变成abc 51 /// 52 /// 53 ///54 public string HexTostring(string s) 55 { 56 string ret = string.Empty; 57 58 for (int i = 0; i < s.Length; i += 2) 59 { 60 int sxx = Convert.ToInt32(s.Substring(i, 2), 16); 61 ret += (char)sxx; 62 } 63 return ret; 64 } 65 66 /// 67 /// 带符号位右移（类似于js的>>>） 68 /// 69 /// 用于右移的操作数 70 /// 右移位数 71 ///72 public int RM(int a, int bit) 73 { 74 unchecked 75 { 76 uint b = (uint)a; 77 b = b >> bit; 78 return (int)b; 79 } 80 } 81 82 /// 83 /// 加解密主调方法 84 /// 85 /// 密钥 86 /// 加密时为string，解密时为byte[] 87 /// true：加密；false：解密 88 /// true：CBC mode；false：非CBC mode 89 /// 初始化向量 90 ///91 private string des(string beinetkey, string message, bool encrypt, bool mode, string iv) 92 { 93 //declaring this locally speeds things up a bit 94 long[] 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 }; 95 long[] spfunction2 = { -0x7fef7fe0, -0x7fff8000, 0x8000, 0x108020, 0x100000, 0x20, -0x7fefffe0, -0x7fff7fe0, -0x7fffffe0, -0x7fef7fe0, -0x7fef8000, -0x80000000, -0x7fff8000, 0x100000, 0x20, -0x7fefffe0, 0x108000, 0x100020, -0x7fff7fe0, 0, -0x80000000, 0x8000, 0x108020, -0x7ff00000, 0x100020, -0x7fffffe0, 0, 0x108000, 0x8020, -0x7fef8000, -0x7ff00000, 0x8020, 0, 0x108020, -0x7fefffe0, 0x100000, -0x7fff7fe0, -0x7ff00000, -0x7fef8000, 0x8000, -0x7ff00000, -0x7fff8000, 0x20, -0x7fef7fe0, 0x108020, 0x20, 0x8000, -0x80000000, 0x8020, -0x7fef8000, 0x100000, -0x7fffffe0, 0x100020, -0x7fff7fe0, -0x7fffffe0, 0x100020, 0x108000, 0, -0x7fff8000, 0x8020, -0x80000000, -0x7fefffe0, -0x7fef7fe0, 0x108000 }; 96 long[] 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 }; 97 long[] 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 }; 98 long[] 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 }; 99 long[] 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 };100 long[] 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 };101 long[] 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 };102 103 104 //create the 16 or 48 subkeys we will need105 int[] keys = des_createKeys(beinetkey);106 int m = 0;107 int i, j;108 int temp, right1, right2, left, right;109 int[] looping;110 int cbcleft = 0, cbcleft2 = 0, cbcright = 0, cbcright2 = 0;111 int endloop;112 int loopinc;113 int len = message.Length;114 int chunk = 0;115 //set up the loops for single and triple des116 var iterations = keys.Length == 32 ? 3 : 9;//single or triple des117 if (iterations == 3)118 {119 looping = encrypt ? new int[] { 0, 32, 2 } : new int[] { 30, -2, -2 };120 }121 else { looping = encrypt ? new int[] { 0, 32, 2, 62, 30, -2, 64, 96, 2 } : new int[] { 94, 62, -2, 32, 64, 2, 30, -2, -2 }; }122 123 if (encrypt)124 {125 message += "\0\0\0\0\0\0\0\0";//pad the message out with null bytes126 }127 //store the result here128 //List result = new List ();129 //List tempresult = new List ();130 string result = string.Empty;131 string tempresult = string.Empty;132 133 if (mode)134 { //CBC mode135 int[] tmp = { 0, 0, 0, 0, 0, 0, 0, 0 };136 int pos = 24;137 int iTmp = 0;138 while (m < iv.Length && iTmp < tmp.Length)139 {140 if (pos < 0)141 pos = 24;142 tmp[iTmp++] = iv[m++] << pos;143 pos -= 8;144 }145 cbcleft = tmp[0] | tmp[1] | tmp[2] | tmp[3];146 cbcright = tmp[4] | tmp[5] | tmp[6] | tmp[7];147 148 //cbcleft = (iv[m++] << 24) | (iv[m++] << 16) | (iv[m++] << 8) | iv[m++];149 //cbcright = (iv[m++] << 24) | (iv[m++] << 16) | (iv[m++] << 8) | iv[m++];150 m = 0;151 }152 153 //loop through each 64 bit chunk of the message154 while (m < len)155 {156 if (encrypt)157 { /*加密时按双字节操作*/158 left = (message[m++] << 16) | message[m++];159 right = (message[m++] << 16) | message[m++];160 }161 else162 {163 left = (message[m++] << 24) | (message[m++] << 16) | (message[m++] << 8) | message[m++];164 right = (message[m++] << 24) | (message[m++] << 16) | (message[m++] << 8) | message[m++];165 }166 //for Cipher Block Chaining mode,xor the message with the previous result167 if (mode)168 {169 if (encrypt)170 {171 left ^= cbcleft; right ^= cbcright;172 }173 else174 {175 cbcleft2 = cbcleft; cbcright2 = cbcright; cbcleft = left; cbcright = right;176 }177 }178 179 //first each 64 but chunk of the message must be permuted according to IP180 temp = (RM(left, 4) ^ right) & 0x0f0f0f0f; right ^= temp; left ^= (temp << 4);181 temp = (RM(left, 16) ^ right) & 0x0000ffff; right ^= temp; left ^= (temp << 16);182 temp = (RM(right, 2) ^ left) & 0x33333333; left ^= temp; right ^= (temp << 2);183 temp = (RM(right, 8) ^ left) & 0x00ff00ff; left ^= temp; right ^= (temp << 8);184 temp = (RM(left, 1) ^ right) & 0x55555555; right ^= temp; left ^= (temp << 1);185 186 left = ((left << 1) | RM(left, 31));187 right = ((right << 1) | RM(right, 31));188 189 //do this either 1 or 3 times for each chunk of the message190 for (j = 0; j < iterations; j += 3)191 {192 endloop = looping[j + 1];193 loopinc = looping[j + 2];194 //now go through and perform the encryption or decryption 195 for (i = looping[j]; i != endloop; i += loopinc)196 { //for efficiency197 right1 = right ^ keys[i];198 right2 = (RM(right, 4) | (right << 28)) ^ keys[i + 1];199 //the result is attained by passing these bytes through the S selection functions200 temp = left;201 left = right;202 right = (int)(temp ^ (spfunction2[RM(right1, 24) & 0x3f] | spfunction4[RM(right1, 16) & 0x3f] | spfunction6[RM(right1, 8) & 0x3f] | spfunction8[right1 & 0x3f] | spfunction1[RM(right2, 24) & 0x3f] | spfunction3[RM(right2, 16) & 0x3f] | spfunction5[RM(right2, 8) & 0x3f] | spfunction7[right2 & 0x3f]));203 }204 temp = left; left = right; right = temp;//unreverse left and right205 }//for either 1 or 3 iterations206 207 //move then each one bit to the right208 left = (RM(left, 1) | (left << 31));209 right = (RM(right, 1) | (right << 31));210 211 //now perform IP-1,which is IP in the opposite direction212 temp = (RM(left, 1) ^ right) & 0x55555555; right ^= temp; left ^= (temp << 1);213 temp = (RM(right, 8) ^ left) & 0x00ff00ff; left ^= temp; right ^= (temp << 8);214 temp = (RM(right, 2) ^ left) & 0x33333333; left ^= temp; right ^= (temp << 2);215 temp = (RM(left, 16) ^ right) & 0x0000ffff; right ^= temp; left ^= (temp << 16);216 temp = (RM(left, 4) ^ right) & 0x0f0f0f0f; right ^= temp; left ^= (temp << 4);217 218 //for Cipher Block Chaining mode,xor the message with the previous result219 if (mode)220 {221 if (encrypt)222 {223 cbcleft = left; cbcright = right;224 }225 else226 {227 left ^= cbcleft2; right ^= cbcright2;228 }229 }230 //int[] arrInt;231 if (encrypt)232 {233 //arrInt = new int[]{ RM(left, 24), (RM(left, 16) & 0xff), (RM(left, 8) & 0xff), (left & 0xff), RM(right, 24), (RM(right, 16) & 0xff), (RM(right, 8) & 0xff), (right & 0xff) };234 tempresult += String.Concat((char)RM(left, 24),235 (char)(RM(left, 16) & 0xff),236 (char)(RM(left, 8) & 0xff),237 (char)(left & 0xff),238 (char)RM(right, 24),239 (char)(RM(right, 16) & 0xff),240 (char)(RM(right, 8) & 0xff),241 (char)(right & 0xff));242 }243 else244 {245 // 解密时，最后一个字符如果是\0，去除246 //arrInt = new int[] { (RM(left, 16) & 0xffff), (left & 0xffff), (RM(right, 16) & 0xffff), (right & 0xffff) };247 int tmpch = (RM(left, 16) & 0xffff);248 if (tmpch != 0)249 tempresult += (char)tmpch;250 tmpch = (left & 0xffff);251 if (tmpch != 0)252 tempresult += (char)tmpch;253 tmpch = (RM(right, 16) & 0xffff);254 if (tmpch != 0)255 tempresult += (char)tmpch;256 tmpch = (right & 0xffff);257 if (tmpch != 0)258 tempresult += (char)tmpch;259 //tempresult += String.Concat((char)(RM(left, 16) & 0xffff),260 // (char)(left & 0xffff),261 // (char)(RM(right, 16) & 0xffff),262 // (char)(right & 0xffff));263 }/*解密时输出双字节*/264 //byte[] arrByte = new byte[arrInt.Length];265 //for (int loop = 0; loop < arrInt.Length; loop++)266 //{267 // tempresult.Add(byte.Parse(arrInt[loop].ToString()));268 // //arrByte[loop] = byte.Parse(arrInt[loop].ToString());269 //}270 //tempresult.Add(arrByte;// System.Text.Encoding.Unicode.GetString(arrByte);271 272 chunk += encrypt ? 16 : 8;273 if (chunk == 512)274 {275 //result.AddRange(tempresult);tempresult.Clear(); 276 result += tempresult; tempresult = string.Empty;277 chunk = 0;278 }279 }//for every 8 characters,or 64 bits in the message280 281 //return the result as an array282 283 //result.AddRange(tempresult);284 //return result.ToArray();285 return result + tempresult;286 }//end of des287 288 /// 289 /// this takes as input a 64 bit beinetkey(even though only 56 bits are used)290 /// as an array of 2 integers,and returns 16 48 bit keys291 /// 292 /// 293 ///294 private int[] des_createKeys(string beinetkey)295 {296 //declaring this locally speeds things up a bit297 int[] pc2bytes0 = { 0, 0x4, 0x20000000, 0x20000004, 0x10000, 0x10004, 0x20010000, 0x20010004, 0x200, 0x204, 0x20000200, 0x20000204, 0x10200, 0x10204, 0x20010200, 0x20010204 };298 int[] pc2bytes1 = { 0, 0x1, 0x100000, 0x100001, 0x4000000, 0x4000001, 0x4100000, 0x4100001, 0x100, 0x101, 0x100100, 0x100101, 0x4000100, 0x4000101, 0x4100100, 0x4100101 };299 int[] pc2bytes2 = { 0, 0x8, 0x800, 0x808, 0x1000000, 0x1000008, 0x1000800, 0x1000808, 0, 0x8, 0x800, 0x808, 0x1000000, 0x1000008, 0x1000800, 0x1000808 };300 int[] pc2bytes3 = { 0, 0x200000, 0x8000000, 0x8200000, 0x2000, 0x202000, 0x8002000, 0x8202000, 0x20000, 0x220000, 0x8020000, 0x8220000, 0x22000, 0x222000, 0x8022000, 0x8222000 };301 int[] pc2bytes4 = { 0, 0x40000, 0x10, 0x40010, 0, 0x40000, 0x10, 0x40010, 0x1000, 0x41000, 0x1010, 0x41010, 0x1000, 0x41000, 0x1010, 0x41010 };302 int[] pc2bytes5 = { 0, 0x400, 0x20, 0x420, 0, 0x400, 0x20, 0x420, 0x2000000, 0x2000400, 0x2000020, 0x2000420, 0x2000000, 0x2000400, 0x2000020, 0x2000420 };303 int[] pc2bytes6 = { 0, 0x10000000, 0x80000, 0x10080000, 0x2, 0x10000002, 0x80002, 0x10080002, 0, 0x10000000, 0x80000, 0x10080000, 0x2, 0x10000002, 0x80002, 0x10080002 };304 int[] pc2bytes7 = { 0, 0x10000, 0x800, 0x10800, 0x20000000, 0x20010000, 0x20000800, 0x20010800, 0x20000, 0x30000, 0x20800, 0x30800, 0x20020000, 0x20030000, 0x20020800, 0x20030800 };305 int[] pc2bytes8 = { 0, 0x40000, 0, 0x40000, 0x2, 0x40002, 0x2, 0x40002, 0x2000000, 0x2040000, 0x2000000, 0x2040000, 0x2000002, 0x2040002, 0x2000002, 0x2040002 };306 int[] pc2bytes9 = { 0, 0x10000000, 0x8, 0x10000008, 0, 0x10000000, 0x8, 0x10000008, 0x400, 0x10000400, 0x408, 0x10000408, 0x400, 0x10000400, 0x408, 0x10000408 };307 int[] pc2bytes10 = { 0, 0x20, 0, 0x20, 0x100000, 0x100020, 0x100000, 0x100020, 0x2000, 0x2020, 0x2000, 0x2020, 0x102000, 0x102020, 0x102000, 0x102020 };308 int[] pc2bytes11 = { 0, 0x1000000, 0x200, 0x1000200, 0x200000, 0x1200000, 0x200200, 0x1200200, 0x4000000, 0x5000000, 0x4000200, 0x5000200, 0x4200000, 0x5200000, 0x4200200, 0x5200200 };309 int[] pc2bytes12 = { 0, 0x1000, 0x8000000, 0x8001000, 0x80000, 0x81000, 0x8080000, 0x8081000, 0x10, 0x1010, 0x8000010, 0x8001010, 0x80010, 0x81010, 0x8080010, 0x8081010 };310 int[] pc2bytes13 = { 0, 0x4, 0x100, 0x104, 0, 0x4, 0x100, 0x104, 0x1, 0x5, 0x101, 0x105, 0x1, 0x5, 0x101, 0x105 };311 312 //how many iterations(1 for des,3 for triple des)313 int iterations = beinetkey.Length >= 24 ? 3 : 1;314 //stores the return keys315 int[] keys = new int[32 * iterations];316 //now define the left shifts which need to be done317 int[] shifts = { 0, 0, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 0 };318 //other variables319 int left, right;320 int lefttemp;321 int righttemp;322 int m = 0, n = 0;323 int temp;324 325 for (int j = 0; j < iterations; j++)326 { //either 1 or 3 iterations327 int[] tmp = { 0, 0, 0, 0, 0, 0, 0, 0 };328 int pos = 24;329 int iTmp = 0;330 while (m < beinetkey.Length && iTmp < tmp.Length)331 {332 if (pos < 0)333 pos = 24;334 tmp[iTmp++] = beinetkey[m++] << pos;335 pos -= 8;336 }337 left = tmp[0] | tmp[1] | tmp[2] | tmp[3];338 right = tmp[4] | tmp[5] | tmp[6] | tmp[7];339 340 //left = (beinetkey[m++] << 24) | (beinetkey[m++] << 16) | (beinetkey[m++] << 8) | beinetkey[m++];341 //right = (beinetkey[m++] << 24) | (beinetkey[m++] << 16) | (beinetkey[m++] << 8) | beinetkey[m++];342 343 temp = (RM(left, 4) ^ right) & 0x0f0f0f0f; right ^= temp; left ^= (temp << 4);344 temp = (RM(right, -16) ^ left) & 0x0000ffff; left ^= temp; right ^= (temp << -16);345 temp = (RM(left, 2) ^ right) & 0x33333333; right ^= temp; left ^= (temp << 2);346 temp = (RM(right, -16) ^ left) & 0x0000ffff; left ^= temp; right ^= (temp << -16);347 temp = (RM(left, 1) ^ right) & 0x55555555; right ^= temp; left ^= (temp << 1);348 temp = (RM(right, 8) ^ left) & 0x00ff00ff; left ^= temp; right ^= (temp << 8);349 temp = (RM(left, 1) ^ right) & 0x55555555; right ^= temp; left ^= (temp << 1);350 351 //the right side needs to be shifted and to get the last four bits of the left side352 temp = (left << 8) | (RM(right, 20) & 0x000000f0);353 //left needs to be put upside down354 left = (right << 24) | ((right << 8) & 0xff0000) | (RM(right, 8) & 0xff00) | (RM(right, 24) & 0xf0);355 right = temp;356 357 //now go through and perform these shifts on the left and right keys358 for (int i = 0; i < shifts.Length; i++)359 {360 //shift the keys either one or two bits to the left361 if (shifts[i] == 1)362 {363 left = (left << 2) | RM(left, 26); right = (right << 2) | RM(right, 26);364 }365 else366 {367 left = (left << 1) | RM(left, 27); right = (right << 1) | RM(right, 27);368 }369 left &= -0xf; right &= -0xf;370 371 //now apply PC-2,in such a way that E is easier when encrypting or decrypting372 //this conversion will look like PC-2 except only the last 6 bits of each byte are used373 //rather than 48 consecutive bits and the order of lines will be according to 374 //how the S selection functions will be applied:S2,S4,S6,S8,S1,S3,S5,S7375 lefttemp = pc2bytes0[RM(left, 28)] | pc2bytes1[RM(left, 24) & 0xf]376 | pc2bytes2[RM(left, 20) & 0xf] | pc2bytes3[RM(left, 16) & 0xf]377 | pc2bytes4[RM(left, 12) & 0xf] | pc2bytes5[RM(left, 8) & 0xf]378 | pc2bytes6[RM(left, 4) & 0xf];379 righttemp = pc2bytes7[RM(right, 28)] | pc2bytes8[RM(right, 24) & 0xf]380 | pc2bytes9[RM(right, 20) & 0xf] | pc2bytes10[RM(right, 16) & 0xf]381 | pc2bytes11[RM(right, 12) & 0xf] | pc2bytes12[RM(right, 8) & 0xf]382 | pc2bytes13[RM(right, 4) & 0xf];383 temp = (RM(righttemp, 16) ^ lefttemp) & 0x0000ffff;384 keys[n++] = lefttemp ^ temp; keys[n++] = righttemp ^ (temp << 16);385 }386 }//for each iterations387 //return the keys we"ve created388 return keys;389 }//end of des_createKeys390 391 #endregion
DES加密解密算法调用 1 /// 2 /// DES加密解密算法调用 3 /// 4 public void DESManager() 5 { 6 string strOutPutData = "DES加密算法测试"; 7 strOutPutData = EncryptDES(strOutPutData, "12345678");//加密 8 strOutPutData = DecryptDES(strOutPutData, "12345678");//解密 9 10 }
Base64加密解密算法实现 1 #region Base64加密解密算法实现 2 ///3 /// Base64加密 4 /// 5 /// 6 ///7 public string Base64Code(string Message) 8 { 9 byte[] encData_byte = new byte[Message.Length];10 encData_byte = System.Text.Encoding.UTF8.GetBytes(Message);11 string encodedData = Convert.ToBase64String(encData_byte);12 return encodedData;13 }14 /// 15 /// Base64解密16 /// 17 /// 18 ///19 public string Base64Decode(string Message)20 {21 try22 {23 System.Text.UTF8Encoding encoder = new System.Text.UTF8Encoding();24 System.Text.Decoder utf8Decode = encoder.GetDecoder();25 byte[] todecode_byte = Convert.FromBase64String(Message);26 int charCount = utf8Decode.GetCharCount(todecode_byte, 0, todecode_byte.Length);27 char[] decoded_char = new char[charCount];28 utf8Decode.GetChars(todecode_byte, 0, todecode_byte.Length, decoded_char, 0);29 string result = new String(decoded_char);30 return result;31 }32 catch (Exception e)33 {34 throw new Exception("Error in base64Decode" + e.Message);35 }36 }37 #endregion
Base64加密算法调用 1 ///2 /// Base64加密算法调用3 /// 4 public void Base64Manager()5 {6 string strOutPutData = "Base64加密解密测试";7 strOutPutData =Base64Code(strOutPutData);8 strOutPutData = Base64Decode(strOutPutData);9 }
2.javascript 实现
js DES加密解密 1 /** 2 * Created with JetBrains WebStorm. 3 * User: markeluo 4 * Date: 13-3-7 5 * Time: 下午12:31 6 * To change this template use File | Settings | File Templates. 7 */ 8 function des(beinetkey, message, encrypt, mode, iv) { 9 //declaring this locally speeds things up a bit 10 var spfunction1 = new Array(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); 11 var spfunction2 = new Array(-0x7fef7fe0, -0x7fff8000, 0x8000, 0x108020, 0x100000, 0x20, -0x7fefffe0, -0x7fff7fe0, -0x7fffffe0, -0x7fef7fe0, -0x7fef8000, -0x80000000, -0x7fff8000, 0x100000, 0x20, -0x7fefffe0, 0x108000, 0x100020, -0x7fff7fe0, 0, -0x80000000, 0x8000, 0x108020, -0x7ff00000, 0x100020, -0x7fffffe0, 0, 0x108000, 0x8020, -0x7fef8000, -0x7ff00000, 0x8020, 0, 0x108020, -0x7fefffe0, 0x100000, -0x7fff7fe0, -0x7ff00000, -0x7fef8000, 0x8000, -0x7ff00000, -0x7fff8000, 0x20, -0x7fef7fe0, 0x108020, 0x20, 0x8000, -0x80000000, 0x8020, -0x7fef8000, 0x100000, -0x7fffffe0, 0x100020, -0x7fff7fe0, -0x7fffffe0, 0x100020, 0x108000, 0, -0x7fff8000, 0x8020, -0x80000000, -0x7fefffe0, -0x7fef7fe0, 0x108000); 12 var spfunction3 = new Array(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); 13 var spfunction4 = new Array(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); 14 var spfunction5 = new Array(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); 15 var spfunction6 = new Array(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); 16 var spfunction7 = new Array(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); 17 var spfunction8 = new Array(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); 18 19 //create the 16 or 48 subkeys we will need 20 var keys = des_createKeys(beinetkey); 21 var m = 0, i, j, temp, temp2, right1, right2, left, right, looping; 22 var cbcleft, cbcleft2, cbcright, cbcright2 23 var endloop, loopinc; 24 var len = message.length; 25 var chunk = 0; 26 //set up the loops for single and triple des 27 var iterations = keys.length == 32 ? 3 : 9; //single or triple des 28 if (iterations == 3) { looping = encrypt ? new Array(0, 32, 2) : new Array(30, -2, -2); } 29 else { looping = encrypt ? new Array(0, 32, 2, 62, 30, -2, 64, 96, 2) : new Array(94, 62, -2, 32, 64, 2, 30, -2, -2); } 30 31 message += '\0\0\0\0\0\0\0\0'; //pad the message out with null bytes 32 //store the result here 33 result = ''; 34 tempresult = ''; 35 36 if (mode == 1) { //CBC mode 37 cbcleft = (iv.charCodeAt(m++) << 24) | (iv.charCodeAt(m++) << 16) | (iv.charCodeAt(m++) << 8) | iv.charCodeAt(m++); 38 cbcright = (iv.charCodeAt(m++) << 24) | (iv.charCodeAt(m++) << 16) | (iv.charCodeAt(m++) << 8) | iv.charCodeAt(m++); 39 m = 0; 40 } 41 42 //loop through each 64 bit chunk of the message 43 while (m < len) { 44 if (encrypt) { //加密时按双字节操作 45 left = (message.charCodeAt(m++) << 16) | message.charCodeAt(m++); 46 right = (message.charCodeAt(m++) << 16) | message.charCodeAt(m++); 47 } else { 48 left = (message.charCodeAt(m++) << 24) | (message.charCodeAt(m++) << 16) | (message.charCodeAt(m++) << 8) | message.charCodeAt(m++); 49 right = (message.charCodeAt(m++) << 24) | (message.charCodeAt(m++) << 16) | (message.charCodeAt(m++) << 8) | message.charCodeAt(m++); 50 } 51 //for Cipher Block Chaining mode,xor the message with the previous result 52 if (mode == 1) { if (encrypt) { left ^= cbcleft; right ^= cbcright; } else { cbcleft2 = cbcleft; cbcright2 = cbcright; cbcleft = left; cbcright = right; } } 53 54 //first each 64 but chunk of the message must be permuted according to IP 55 temp = ((left >>> 4) ^ right) & 0x0f0f0f0f; right ^= temp; left ^= (temp << 4); 56 temp = ((left >>> 16) ^ right) & 0x0000ffff; right ^= temp; left ^= (temp << 16); 57 temp = ((right >>> 2) ^ left) & 0x33333333; left ^= temp; right ^= (temp << 2); 58 temp = ((right >>> 8) ^ left) & 0x00ff00ff; left ^= temp; right ^= (temp << 8); 59 temp = ((left >>> 1) ^ right) & 0x55555555; right ^= temp; left ^= (temp << 1); 60 61 left = ((left << 1) | (left >>> 31)); 62 right = ((right << 1) | (right >>> 31)); 63 64 //do this either 1 or 3 times for each chunk of the message 65 for (j = 0; j < iterations; j += 3) { 66 endloop = looping[j + 1]; 67 loopinc = looping[j + 2]; 68 //now go through and perform the encryption or decryption 69 for (i = looping[j]; i != endloop; i += loopinc) { //for efficiency 70 right1 = right ^ keys[i]; 71 right2 = ((right >>> 4) | (right << 28)) ^ keys[i + 1]; 72 //the result is attained by passing these bytes through the S selection functions 73 temp = left; 74 left = right; 75 right = temp ^ (spfunction2[(right1 >>> 24) & 0x3f] | spfunction4[(right1 >>> 16) & 0x3f] | spfunction6[(right1 >>> 8) & 0x3f] | spfunction8[right1 & 0x3f] | spfunction1[(right2 >>> 24) & 0x3f] | spfunction3[(right2 >>> 16) & 0x3f] | spfunction5[(right2 >>> 8) & 0x3f] | spfunction7[right2 & 0x3f]); 76 } 77 temp = left; left = right; right = temp; //unreverse left and right 78 } //for either 1 or 3 iterations 79 80 //move then each one bit to the right 81 left = ((left >>> 1) | (left << 31)); 82 right = ((right >>> 1) | (right << 31)); 83 84 //now perform IP-1,which is IP in the opposite direction 85 temp = ((left >>> 1) ^ right) & 0x55555555; right ^= temp; left ^= (temp << 1); 86 temp = ((right >>> 8) ^ left) & 0x00ff00ff; left ^= temp; right ^= (temp << 8); 87 temp = ((right >>> 2) ^ left) & 0x33333333; left ^= temp; right ^= (temp << 2); 88 temp = ((left >>> 16) ^ right) & 0x0000ffff; right ^= temp; left ^= (temp << 16); 89 temp = ((left >>> 4) ^ right) & 0x0f0f0f0f; right ^= temp; left ^= (temp << 4); 90 91 //for Cipher Block Chaining mode,xor the message with the previous result 92 if (mode == 1) { if (encrypt) { cbcleft = left; cbcright = right; } else { left ^= cbcleft2; right ^= cbcright2; } } 93 if (encrypt) { 94 tempresult += String.fromCharCode((left >>> 24), ((left >>> 16) & 0xff), ((left >>> 8) & 0xff), (left & 0xff), (right >>> 24), ((right >>> 16) & 0xff), ((right >>> 8) & 0xff), (right & 0xff)); 95 } 96 else { 97 tempresult += String.fromCharCode(((left >>> 16) & 0xffff), (left & 0xffff), ((right >>> 16) & 0xffff), (right & 0xffff)); 98 } //解密时输出双字节 99 encrypt ? chunk += 16 : chunk += 8;100 if (chunk == 512) { result += tempresult; tempresult = ''; chunk = 0; }101 } //for every 8 characters,or 64 bits in the message102 103 //return the result as an array104 return result + tempresult;105 } //end of des106 107 //des_createKeys108 //this takes as input a 64 bit beinetkey(even though only 56 bits are used)109 //as an array of 2 integers,and returns 16 48 bit keys110 function des_createKeys(beinetkey) {111 //declaring this locally speeds things up a bit112 pc2bytes0 = new Array(0, 0x4, 0x20000000, 0x20000004, 0x10000, 0x10004, 0x20010000, 0x20010004, 0x200, 0x204, 0x20000200, 0x20000204, 0x10200, 0x10204, 0x20010200, 0x20010204);113 pc2bytes1 = new Array(0, 0x1, 0x100000, 0x100001, 0x4000000, 0x4000001, 0x4100000, 0x4100001, 0x100, 0x101, 0x100100, 0x100101, 0x4000100, 0x4000101, 0x4100100, 0x4100101);114 pc2bytes2 = new Array(0, 0x8, 0x800, 0x808, 0x1000000, 0x1000008, 0x1000800, 0x1000808, 0, 0x8, 0x800, 0x808, 0x1000000, 0x1000008, 0x1000800, 0x1000808);115 pc2bytes3 = new Array(0, 0x200000, 0x8000000, 0x8200000, 0x2000, 0x202000, 0x8002000, 0x8202000, 0x20000, 0x220000, 0x8020000, 0x8220000, 0x22000, 0x222000, 0x8022000, 0x8222000);116 pc2bytes4 = new Array(0, 0x40000, 0x10, 0x40010, 0, 0x40000, 0x10, 0x40010, 0x1000, 0x41000, 0x1010, 0x41010, 0x1000, 0x41000, 0x1010, 0x41010);117 pc2bytes5 = new Array(0, 0x400, 0x20, 0x420, 0, 0x400, 0x20, 0x420, 0x2000000, 0x2000400, 0x2000020, 0x2000420, 0x2000000, 0x2000400, 0x2000020, 0x2000420);118 pc2bytes6 = new Array(0, 0x10000000, 0x80000, 0x10080000, 0x2, 0x10000002, 0x80002, 0x10080002, 0, 0x10000000, 0x80000, 0x10080000, 0x2, 0x10000002, 0x80002, 0x10080002);119 pc2bytes7 = new Array(0, 0x10000, 0x800, 0x10800, 0x20000000, 0x20010000, 0x20000800, 0x20010800, 0x20000, 0x30000, 0x20800, 0x30800, 0x20020000, 0x20030000, 0x20020800, 0x20030800);120 pc2bytes8 = new Array(0, 0x40000, 0, 0x40000, 0x2, 0x40002, 0x2, 0x40002, 0x2000000, 0x2040000, 0x2000000, 0x2040000, 0x2000002, 0x2040002, 0x2000002, 0x2040002);121 pc2bytes9 = new Array(0, 0x10000000, 0x8, 0x10000008, 0, 0x10000000, 0x8, 0x10000008, 0x400, 0x10000400, 0x408, 0x10000408, 0x400, 0x10000400, 0x408, 0x10000408);122 pc2bytes10 = new Array(0, 0x20, 0, 0x20, 0x100000, 0x100020, 0x100000, 0x100020, 0x2000, 0x2020, 0x2000, 0x2020, 0x102000, 0x102020, 0x102000, 0x102020);123 pc2bytes11 = new Array(0, 0x1000000, 0x200, 0x1000200, 0x200000, 0x1200000, 0x200200, 0x1200200, 0x4000000, 0x5000000, 0x4000200, 0x5000200, 0x4200000, 0x5200000, 0x4200200, 0x5200200);124 pc2bytes12 = new Array(0, 0x1000, 0x8000000, 0x8001000, 0x80000, 0x81000, 0x8080000, 0x8081000, 0x10, 0x1010, 0x8000010, 0x8001010, 0x80010, 0x81010, 0x8080010, 0x8081010);125 pc2bytes13 = new Array(0, 0x4, 0x100, 0x104, 0, 0x4, 0x100, 0x104, 0x1, 0x5, 0x101, 0x105, 0x1, 0x5, 0x101, 0x105);126 127 //how many iterations(1 for des,3 for triple des)128 var iterations = beinetkey.length >= 24 ? 3 : 1;129 //stores the return keys130 var keys = new Array(32 * iterations);131 //now define the left shifts which need to be done132 var shifts = new Array(0, 0, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 0);133 //other variables134 var lefttemp, righttemp, m = 0, n = 0, temp;135 136 for (var j = 0; j < iterations; j++) { //either 1 or 3 iterations137 left = (beinetkey.charCodeAt(m++) << 24) | (beinetkey.charCodeAt(m++) << 16) | (beinetkey.charCodeAt(m++) << 8) | beinetkey.charCodeAt(m++);138 right = (beinetkey.charCodeAt(m++) << 24) | (beinetkey.charCodeAt(m++) << 16) | (beinetkey.charCodeAt(m++) << 8) | beinetkey.charCodeAt(m++);139 140 temp = ((left >>> 4) ^ right) & 0x0f0f0f0f; right ^= temp; left ^= (temp << 4);141 temp = ((right >>> -16) ^ left) & 0x0000ffff; left ^= temp; right ^= (temp << -16);142 temp = ((left >>> 2) ^ right) & 0x33333333; right ^= temp; left ^= (temp << 2);143 temp = ((right >>> -16) ^ left) & 0x0000ffff; left ^= temp; right ^= (temp << -16);144 temp = ((left >>> 1) ^ right) & 0x55555555; right ^= temp; left ^= (temp << 1);145 temp = ((right >>> 8) ^ left) & 0x00ff00ff; left ^= temp; right ^= (temp << 8);146 temp = ((left >>> 1) ^ right) & 0x55555555; right ^= temp; left ^= (temp << 1);147 148 //the right side needs to be shifted and to get the last four bits of the left side149 temp = (left << 8) | ((right >>> 20) & 0x000000f0);150 //left needs to be put upside down151 left = (right << 24) | ((right << 8) & 0xff0000) | ((right >>> 8) & 0xff00) | ((right >>> 24) & 0xf0);152 right = temp;153 154 //now go through and perform these shifts on the left and right keys155 for (i = 0; i < shifts.length; i++) {156 //shift the keys either one or two bits to the left157 if (shifts[i]) { left = (left << 2) | (left >>> 26); right = (right << 2) | (right >>> 26); }158 else { left = (left << 1) | (left >>> 27); right = (right << 1) | (right >>> 27); }159 left &= -0xf; right &= -0xf;160 161 //now apply PC-2,in such a way that E is easier when encrypting or decrypting162 //this conversion will look like PC-2 except only the last 6 bits of each byte are used163 //rather than 48 consecutive bits and the order of lines will be according to164 //how the S selection functions will be applied:S2,S4,S6,S8,S1,S3,S5,S7165 lefttemp = pc2bytes0[left >>> 28] | pc2bytes1[(left >>> 24) & 0xf]166 | pc2bytes2[(left >>> 20) & 0xf] | pc2bytes3[(left >>> 16) & 0xf]167 | pc2bytes4[(left >>> 12) & 0xf] | pc2bytes5[(left >>> 8) & 0xf]168 | pc2bytes6[(left >>> 4) & 0xf];169 righttemp = pc2bytes7[right >>> 28] | pc2bytes8[(right >>> 24) & 0xf]170 | pc2bytes9[(right >>> 20) & 0xf] | pc2bytes10[(right >>> 16) & 0xf]171 | pc2bytes11[(right >>> 12) & 0xf] | pc2bytes12[(right >>> 8) & 0xf]172 | pc2bytes13[(right >>> 4) & 0xf];173 temp = ((righttemp >>> 16) ^ lefttemp) & 0x0000ffff;174 keys[n++] = lefttemp ^ temp; keys[n++] = righttemp ^ (temp << 16);175 }176 } //for each iterations177 //return the keys we've created178 return keys;179 } //end of des_createKeys180 181 // 把字符串转换为16进制字符串182 // 如：a变成61（即10进制的97）；abc变成616263183 function stringToHex(s) {184 var r='';185 var hexes=new Array('0','1','2','3','4','5','6','7','8','9','a','b','c','d','e','f');186 for(var i=0;i<(s.length);i++){r+=hexes[s.charCodeAt(i)>>4]+hexes[s.charCodeAt(i)&0xf];}187 return r;188 }189 // 16进制字符串转换为字符串190 // 如：61（即10进制的97）变成a；616263变成abc191 function HexTostring(s){192 var r='';193 for(var i=0;i js Base64加密解密 1 var base64EncodeChars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"; 2 var base64DecodeChars = new Array( 3 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 4 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 5 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 62, -1, -1, -1, 63, 6 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, -1, -1, -1, -1, -1, -1, 7 -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 8 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, -1, -1, -1, -1, -1, 9 -1, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 10 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, -1, -1, -1, -1, -1); 11 12 function base64encode(str) { 13 var out, i, len; 14 var c1, c2, c3; 15 16 len = str.length; 17 i = 0; 18 out = ""; 19 while(i < len) { 20 c1 = str.charCodeAt(i++) & 0xff; 21 if(i == len) 22 { 23 out += base64EncodeChars.charAt(c1 >> 2); 24 out += base64EncodeChars.charAt((c1 & 0x3) << 4); 25 out += "=="; 26 break; 27 } 28 c2 = str.charCodeAt(i++); 29 if(i == len) 30 { 31 out += base64EncodeChars.charAt(c1 >> 2); 32 out += base64EncodeChars.charAt(((c1 & 0x3)<< 4) | ((c2 & 0xF0) >> 4)); 33 out += base64EncodeChars.charAt((c2 & 0xF) << 2); 34 out += "="; 35 break; 36 } 37 c3 = str.charCodeAt(i++); 38 out += base64EncodeChars.charAt(c1 >> 2); 39 out += base64EncodeChars.charAt(((c1 & 0x3)<< 4) | ((c2 & 0xF0) >> 4)); 40 out += base64EncodeChars.charAt(((c2 & 0xF) << 2) | ((c3 & 0xC0) >>6)); 41 out += base64EncodeChars.charAt(c3 & 0x3F); 42 } 43 return out; 44 } 45 46 function base64decode(str) { 47 var c1, c2, c3, c4; 48 var i, len, out; 49 50 len = str.length; 51 i = 0; 52 out = ""; 53 while(i < len) { 54 /* c1 */ 55 do { 56 c1 = base64DecodeChars[str.charCodeAt(i++) & 0xff]; 57 } while(i < len && c1 == -1); 58 if(c1 == -1) 59 break; 60 61 /* c2 */ 62 do { 63 c2 = base64DecodeChars[str.charCodeAt(i++) & 0xff]; 64 } while(i < len && c2 == -1); 65 if(c2 == -1) 66 break; 67 68 out += String.fromCharCode((c1 << 2) | ((c2 & 0x30) >> 4)); 69 70 /* c3 */ 71 do { 72 c3 = str.charCodeAt(i++) & 0xff; 73 if(c3 == 61) 74 return out; 75 c3 = base64DecodeChars[c3]; 76 } while(i < len && c3 == -1); 77 if(c3 == -1) 78 break; 79 80 out += String.fromCharCode(((c2 & 0XF) << 4) | ((c3 & 0x3C) >> 2)); 81 82 /* c4 */ 83 do { 84 c4 = str.charCodeAt(i++) & 0xff; 85 if(c4 == 61) 86 return out; 87 c4 = base64DecodeChars[c4]; 88 } while(i < len && c4 == -1); 89 if(c4 == -1) 90 break; 91 out += String.fromCharCode(((c3 & 0x03) << 6) | c4); 92 } 93 return out; 94 } 95 96 function utf16to8(str) { 97 var out, i, len, c; 98 99 out = "";100 len = str.length;101 for(i = 0; i < len; i++) {102 c = str.charCodeAt(i);103 if ((c >= 0x0001) && (c <= 0x007F)) {104 out += str.charAt(i);105 } else if (c > 0x07FF) {106 out += String.fromCharCode(0xE0 | ((c >> 12) & 0x0F));107 out += String.fromCharCode(0x80 | ((c >> 6) & 0x3F));108 out += String.fromCharCode(0x80 | ((c >> 0) & 0x3F));109 } else {110 out += String.fromCharCode(0xC0 | ((c >> 6) & 0x1F));111 out += String.fromCharCode(0x80 | ((c >> 0) & 0x3F));112 }113 }114 return out;115 }116 117 function utf8to16(str) {118 var out, i, len, c;119 var char2, char3;120 121 out = "";122 len = str.length;123 i = 0;124 while(i < len) {125 c = str.charCodeAt(i++);126 switch(c >> 4)127 {128 case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7:129 // 0xxxxxxx130 out += str.charAt(i-1);131 break;132 case 12: case 13:133 // 110x xxxx 10xx xxxx134 char2 = str.charCodeAt(i++);135 out += String.fromCharCode(((c & 0x1F) << 6) | (char2 & 0x3F));136 break;137 case 14:138 // 1110 xxxx 10xx xxxx 10xx xxxx139 char2 = str.charCodeAt(i++);140 char3 = str.charCodeAt(i++);141 out += String.fromCharCode(((c & 0x0F) << 12) |142 ((char2 & 0x3F) << 6) |143 ((char3 & 0x3F) << 0));144 break;145 }146 }147 148 return out;149 }