crypto.js 32 KB

123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356357358359360361362363364365366367368369370371372373374375376377378379380381382383384385386387388389390391392393394395396397398399400401402403404405406407408409410411412413414415416417418419420421422423424425426427428429430431432433434435436437438439440441442443444445446447448449450451452453454455456457458459460461462463464465466467468469470471472473474475476477478479480481482483484485486487488489490491492493494495496497498499500501502503504505506507508509510511512513514515516517518519520521522523524525526527528529530531532533534535536537538539540541542543544545546547548549550551552553554555556557558559560561562563564565566567568569570571572573574575576577578579580581582583584585586587588589590591592593594595596597598599600601602603604605606607608609610611612613614615616617618619620621622623624625626627628629630631632633634635636637638639640641642643644645646647648649650651652653654655656657658659660661662663664665666667668669670671672673674675676677678679680681682683684685686687688689690691692693694695696697698699700701702703704705706707708709710711712713714715716717718719720721722723724725726727728729730731732733734735736737738739740741742743744745746747748749750751752753754755756757758759760761762763764765766767768769770771772773774775776777778779780781782783784785786787
  1. const key = 'zDeESsxsXuionhqSLZYHWcDJ';
  2. class CryptoJS {
  3. // 3DES加密,CBC/PKCS5Padding
  4. static Des3Encrypt (input) {
  5. let genKey = genkey(key, 0, 24);
  6. return base64encode(des(genKey.key, input, 1, 1, key.substr(0, 8), 1));
  7. }
  8. // 3DES解密,CBC/PKCS5Padding
  9. static Des3Decrypt (input) {
  10. let genKey = genkey(key, 0, 24);
  11. return des(genKey.key, base64decode(input), 0, 1, key.substr(0, 8), 1);
  12. }
  13. // md5
  14. static Md5Encrypt (input) {
  15. return md5(String(input));
  16. }
  17. }
  18. function des (key, message, encrypt, mode, iv, padding) {
  19. if (encrypt) // 如果是加密的话,首先转换编码
  20. { message = unescape(encodeURIComponent(message)); }
  21. // declaring this locally speeds things up a bit
  22. let 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);
  23. let 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);
  24. let 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);
  25. let 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);
  26. let 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);
  27. let 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);
  28. let 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);
  29. let 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);
  30. // create the 16 or 48 subkeys we will need
  31. let keys = des_createKeys(key);
  32. let m = 0, i, j, temp, temp2, right1, right2, left, right, looping;
  33. let cbcleft, cbcleft2, cbcright, cbcright2;
  34. let endloop, loopinc;
  35. var len = message.length;
  36. let chunk = 0;
  37. // set up the loops for single and triple des
  38. let iterations = keys.length === 32 ? 3 : 9; // single or triple des
  39. if (iterations === 3) { looping = encrypt ? new Array(0, 32, 2) : new Array(30, -2, -2); } 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); }
  40. // pad the message depending on the padding parameter
  41. if (padding === 2) message += ' '; // pad the message with spaces
  42. else if (padding === 1) {
  43. if (encrypt) {
  44. temp = 8 - (len % 8);
  45. message += String.fromCharCode(temp, temp, temp, temp, temp, temp, temp, temp);
  46. if (temp === 8) len += 8;
  47. }
  48. } // PKCS7 padding
  49. else if (!padding) message += '\0\0\0\0\0\0\0\0'; // pad the message out with null bytes
  50. // store the result here
  51. let result = '';
  52. let tempresult = '';
  53. if (mode === 1) { // CBC mode
  54. cbcleft = (iv.charCodeAt(m++) << 24) | (iv.charCodeAt(m++) << 16) | (iv.charCodeAt(m++) << 8) | iv.charCodeAt(m++);
  55. cbcright = (iv.charCodeAt(m++) << 24) | (iv.charCodeAt(m++) << 16) | (iv.charCodeAt(m++) << 8) | iv.charCodeAt(m++);
  56. m = 0;
  57. }
  58. // loop through each 64 bit chunk of the message
  59. while (m < len) {
  60. left = (message.charCodeAt(m++) << 24) | (message.charCodeAt(m++) << 16) | (message.charCodeAt(m++) << 8) | message.charCodeAt(m++);
  61. right = (message.charCodeAt(m++) << 24) | (message.charCodeAt(m++) << 16) | (message.charCodeAt(m++) << 8) | message.charCodeAt(m++);
  62. // for Cipher Block Chaining mode, xor the message with the previous result
  63. if (mode === 1) {
  64. if (encrypt) {
  65. left ^= cbcleft;
  66. right ^= cbcright;
  67. } else {
  68. cbcleft2 = cbcleft;
  69. cbcright2 = cbcright;
  70. cbcleft = left;
  71. cbcright = right;
  72. }
  73. }
  74. // first each 64 but chunk of the message must be permuted according to IP
  75. temp = ((left >>> 4) ^ right) & 0x0f0f0f0f;
  76. right ^= temp;
  77. left ^= (temp << 4);
  78. temp = ((left >>> 16) ^ right) & 0x0000ffff;
  79. right ^= temp;
  80. left ^= (temp << 16);
  81. temp = ((right >>> 2) ^ left) & 0x33333333;
  82. left ^= temp;
  83. right ^= (temp << 2);
  84. temp = ((right >>> 8) ^ left) & 0x00ff00ff;
  85. left ^= temp;
  86. right ^= (temp << 8);
  87. temp = ((left >>> 1) ^ right) & 0x55555555;
  88. right ^= temp;
  89. left ^= (temp << 1);
  90. left = ((left << 1) | (left >>> 31));
  91. right = ((right << 1) | (right >>> 31));
  92. // do this either 1 or 3 times for each chunk of the message
  93. for (j = 0; j < iterations; j += 3) {
  94. endloop = looping[j + 1];
  95. loopinc = looping[j + 2];
  96. // now go through and perform the encryption or decryption
  97. for (i = looping[j]; i !== endloop; i += loopinc) { // for efficiency
  98. right1 = right ^ keys[i];
  99. right2 = ((right >>> 4) | (right << 28)) ^ keys[i + 1];
  100. // the result is attained by passing these bytes through the S selection functions
  101. temp = left;
  102. left = right;
  103. right = temp ^ (spfunction2[(right1 >>> 24) & 0x3f] | spfunction4[(right1 >>> 16) & 0x3f] |
  104. spfunction6[(right1 >>> 8) & 0x3f] | spfunction8[right1 & 0x3f] |
  105. spfunction1[(right2 >>> 24) & 0x3f] | spfunction3[(right2 >>> 16) & 0x3f] |
  106. spfunction5[(right2 >>> 8) & 0x3f] | spfunction7[right2 & 0x3f]);
  107. }
  108. temp = left;
  109. left = right;
  110. right = temp; // unreverse left and right
  111. } // for either 1 or 3 iterations
  112. // move then each one bit to the right
  113. left = ((left >>> 1) | (left << 31));
  114. right = ((right >>> 1) | (right << 31));
  115. // now perform IP-1, which is IP in the opposite direction
  116. temp = ((left >>> 1) ^ right) & 0x55555555;
  117. right ^= temp;
  118. left ^= (temp << 1);
  119. temp = ((right >>> 8) ^ left) & 0x00ff00ff;
  120. left ^= temp;
  121. right ^= (temp << 8);
  122. temp = ((right >>> 2) ^ left) & 0x33333333;
  123. left ^= temp;
  124. right ^= (temp << 2);
  125. temp = ((left >>> 16) ^ right) & 0x0000ffff;
  126. right ^= temp;
  127. left ^= (temp << 16);
  128. temp = ((left >>> 4) ^ right) & 0x0f0f0f0f;
  129. right ^= temp;
  130. left ^= (temp << 4);
  131. // for Cipher Block Chaining mode, xor the message with the previous result
  132. if (mode === 1) {
  133. if (encrypt) {
  134. cbcleft = left;
  135. cbcright = right;
  136. } else {
  137. left ^= cbcleft2;
  138. right ^= cbcright2;
  139. }
  140. }
  141. tempresult += String.fromCharCode((left >>> 24), ((left >>> 16) & 0xff), ((left >>> 8) & 0xff), (left & 0xff), (right >>> 24), ((right >>> 16) & 0xff), ((right >>> 8) & 0xff), (right & 0xff));
  142. chunk += 8;
  143. if (chunk === 512) {
  144. result += tempresult;
  145. tempresult = '';
  146. chunk = 0;
  147. }
  148. } // for every 8 characters, or 64 bits in the message
  149. // return the result as an array
  150. result += tempresult;
  151. result = result.replace(/\0*$/g, '');
  152. if (!encrypt) { // 如果是解密的话,解密结束后对PKCS7 padding进行解码,并转换成utf-8编码
  153. if (padding === 1) { // PKCS7 padding解码
  154. var len = result.length, paddingChars = 0;
  155. len && (paddingChars = result.charCodeAt(len - 1));
  156. (paddingChars <= 8) && (result = result.substring(0, len - paddingChars));
  157. }
  158. // 转换成UTF-8编码
  159. result = decodeURIComponent(escape(result));
  160. }
  161. return result;
  162. } // end of des
  163. // des_createKeys
  164. // this takes as input a 64 bit key (even though only 56 bits are used)
  165. // as an array of 2 integers, and returns 16 48 bit keys
  166. function des_createKeys (key) {
  167. // declaring this locally speeds things up a bit
  168. let pc2bytes0 = new Array(0, 0x4, 0x20000000, 0x20000004, 0x10000, 0x10004, 0x20010000, 0x20010004, 0x200, 0x204, 0x20000200, 0x20000204, 0x10200, 0x10204, 0x20010200, 0x20010204);
  169. let pc2bytes1 = new Array(0, 0x1, 0x100000, 0x100001, 0x4000000, 0x4000001, 0x4100000, 0x4100001, 0x100, 0x101, 0x100100, 0x100101, 0x4000100, 0x4000101, 0x4100100, 0x4100101);
  170. let pc2bytes2 = new Array(0, 0x8, 0x800, 0x808, 0x1000000, 0x1000008, 0x1000800, 0x1000808, 0, 0x8, 0x800, 0x808, 0x1000000, 0x1000008, 0x1000800, 0x1000808);
  171. let pc2bytes3 = new Array(0, 0x200000, 0x8000000, 0x8200000, 0x2000, 0x202000, 0x8002000, 0x8202000, 0x20000, 0x220000, 0x8020000, 0x8220000, 0x22000, 0x222000, 0x8022000, 0x8222000);
  172. let pc2bytes4 = new Array(0, 0x40000, 0x10, 0x40010, 0, 0x40000, 0x10, 0x40010, 0x1000, 0x41000, 0x1010, 0x41010, 0x1000, 0x41000, 0x1010, 0x41010);
  173. let pc2bytes5 = new Array(0, 0x400, 0x20, 0x420, 0, 0x400, 0x20, 0x420, 0x2000000, 0x2000400, 0x2000020, 0x2000420, 0x2000000, 0x2000400, 0x2000020, 0x2000420);
  174. let pc2bytes6 = new Array(0, 0x10000000, 0x80000, 0x10080000, 0x2, 0x10000002, 0x80002, 0x10080002, 0, 0x10000000, 0x80000, 0x10080000, 0x2, 0x10000002, 0x80002, 0x10080002);
  175. let pc2bytes7 = new Array(0, 0x10000, 0x800, 0x10800, 0x20000000, 0x20010000, 0x20000800, 0x20010800, 0x20000, 0x30000, 0x20800, 0x30800, 0x20020000, 0x20030000, 0x20020800, 0x20030800);
  176. let pc2bytes8 = new Array(0, 0x40000, 0, 0x40000, 0x2, 0x40002, 0x2, 0x40002, 0x2000000, 0x2040000, 0x2000000, 0x2040000, 0x2000002, 0x2040002, 0x2000002, 0x2040002);
  177. let pc2bytes9 = new Array(0, 0x10000000, 0x8, 0x10000008, 0, 0x10000000, 0x8, 0x10000008, 0x400, 0x10000400, 0x408, 0x10000408, 0x400, 0x10000400, 0x408, 0x10000408);
  178. let pc2bytes10 = new Array(0, 0x20, 0, 0x20, 0x100000, 0x100020, 0x100000, 0x100020, 0x2000, 0x2020, 0x2000, 0x2020, 0x102000, 0x102020, 0x102000, 0x102020);
  179. let pc2bytes11 = new Array(0, 0x1000000, 0x200, 0x1000200, 0x200000, 0x1200000, 0x200200, 0x1200200, 0x4000000, 0x5000000, 0x4000200, 0x5000200, 0x4200000, 0x5200000, 0x4200200, 0x5200200);
  180. let pc2bytes12 = new Array(0, 0x1000, 0x8000000, 0x8001000, 0x80000, 0x81000, 0x8080000, 0x8081000, 0x10, 0x1010, 0x8000010, 0x8001010, 0x80010, 0x81010, 0x8080010, 0x8081010);
  181. let pc2bytes13 = new Array(0, 0x4, 0x100, 0x104, 0, 0x4, 0x100, 0x104, 0x1, 0x5, 0x101, 0x105, 0x1, 0x5, 0x101, 0x105);
  182. // how many iterations (1 for des, 3 for triple des)
  183. let iterations = key.length > 8 ? 3 : 1; // changed by Paul 16/6/2007 to use Triple DES for 9+ byte keys
  184. // stores the return keys
  185. let keys = new Array(32 * iterations);
  186. // now define the left shifts which need to be done
  187. let shifts = new Array(0, 0, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 0);
  188. // other variables
  189. let lefttemp, righttemp, m = 0, n = 0, temp;
  190. for (let j = 0; j < iterations; j++) { // either 1 or 3 iterations
  191. let left = (key.charCodeAt(m++) << 24) | (key.charCodeAt(m++) << 16) | (key.charCodeAt(m++) << 8) | key.charCodeAt(m++);
  192. let right = (key.charCodeAt(m++) << 24) | (key.charCodeAt(m++) << 16) | (key.charCodeAt(m++) << 8) | key.charCodeAt(m++);
  193. temp = ((left >>> 4) ^ right) & 0x0f0f0f0f;
  194. right ^= temp;
  195. left ^= (temp << 4);
  196. temp = ((right >>> -16) ^ left) & 0x0000ffff;
  197. left ^= temp;
  198. right ^= (temp << -16);
  199. temp = ((left >>> 2) ^ right) & 0x33333333;
  200. right ^= temp;
  201. left ^= (temp << 2);
  202. temp = ((right >>> -16) ^ left) & 0x0000ffff;
  203. left ^= temp;
  204. right ^= (temp << -16);
  205. temp = ((left >>> 1) ^ right) & 0x55555555;
  206. right ^= temp;
  207. left ^= (temp << 1);
  208. temp = ((right >>> 8) ^ left) & 0x00ff00ff;
  209. left ^= temp;
  210. right ^= (temp << 8);
  211. temp = ((left >>> 1) ^ right) & 0x55555555;
  212. right ^= temp;
  213. left ^= (temp << 1);
  214. // the right side needs to be shifted and to get the last four bits of the left side
  215. temp = (left << 8) | ((right >>> 20) & 0x000000f0);
  216. // left needs to be put upside down
  217. left = (right << 24) | ((right << 8) & 0xff0000) | ((right >>> 8) & 0xff00) | ((right >>> 24) & 0xf0);
  218. right = temp;
  219. // now go through and perform these shifts on the left and right keys
  220. for (let i = 0; i < shifts.length; i++) {
  221. // shift the keys either one or two bits to the left
  222. if (shifts[i]) {
  223. left = (left << 2) | (left >>> 26);
  224. right = (right << 2) | (right >>> 26);
  225. } else {
  226. left = (left << 1) | (left >>> 27);
  227. right = (right << 1) | (right >>> 27);
  228. }
  229. left &= -0xf;
  230. right &= -0xf;
  231. // now apply PC-2, in such a way that E is easier when encrypting or decrypting
  232. // this conversion will look like PC-2 except only the last 6 bits of each byte are used
  233. // rather than 48 consecutive bits and the order of lines will be according to
  234. // how the S selection functions will be applied: S2, S4, S6, S8, S1, S3, S5, S7
  235. lefttemp = pc2bytes0[left >>> 28] | pc2bytes1[(left >>> 24) & 0xf] |
  236. pc2bytes2[(left >>> 20) & 0xf] | pc2bytes3[(left >>> 16) & 0xf] |
  237. pc2bytes4[(left >>> 12) & 0xf] | pc2bytes5[(left >>> 8) & 0xf] |
  238. pc2bytes6[(left >>> 4) & 0xf];
  239. righttemp = pc2bytes7[right >>> 28] | pc2bytes8[(right >>> 24) & 0xf] |
  240. pc2bytes9[(right >>> 20) & 0xf] | pc2bytes10[(right >>> 16) & 0xf] |
  241. pc2bytes11[(right >>> 12) & 0xf] | pc2bytes12[(right >>> 8) & 0xf] |
  242. pc2bytes13[(right >>> 4) & 0xf];
  243. temp = ((righttemp >>> 16) ^ lefttemp) & 0x0000ffff;
  244. keys[n++] = lefttemp ^ temp;
  245. keys[n++] = righttemp ^ (temp << 16);
  246. }
  247. } // for each iterations
  248. // return the keys we've created
  249. return keys;
  250. } // end of des_createKeys
  251. function genkey (key, start, end) {
  252. // 8 byte / 64 bit Key (DES) or 192 bit Key
  253. return { key: pad(key.slice(start, end)), vector: 1 };
  254. }
  255. function pad (key) {
  256. for (let i = key.length; i < 24; i++) {
  257. key += '0';
  258. }
  259. return key;
  260. }
  261. let BASE64_MAPPING = [
  262. 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H',
  263. 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P',
  264. 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X',
  265. 'Y', 'Z', 'a', 'b', 'c', 'd', 'e', 'f',
  266. 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n',
  267. 'o', 'p', 'q', 'r', 's', 't', 'u', 'v',
  268. 'w', 'x', 'y', 'z', '0', '1', '2', '3',
  269. '4', '5', '6', '7', '8', '9', '+', '/'
  270. ];
  271. /**
  272. *ascii convert to binary
  273. */
  274. let _toBinary = function (ascii) {
  275. let binary = new Array();
  276. while (ascii > 0) {
  277. let b = ascii % 2;
  278. ascii = Math.floor(ascii / 2);
  279. binary.push(b);
  280. }
  281. /*
  282. var len = binary.length;
  283. if(6-len > 0){
  284. for(var i = 6-len ; i > 0 ; --i){
  285. binary.push(0);
  286. }
  287. } */
  288. binary.reverse();
  289. return binary;
  290. };
  291. /**
  292. *binary convert to decimal
  293. */
  294. let _toDecimal = function (binary) {
  295. let dec = 0;
  296. let p = 0;
  297. for (let i = binary.length - 1; i >= 0; --i) {
  298. let b = binary[i];
  299. if (b === 1) {
  300. dec += Math.pow(2, p);
  301. }
  302. ++p;
  303. }
  304. return dec;
  305. };
  306. /**
  307. *unicode convert to utf-8
  308. */
  309. let _toUTF8Binary = function (c, binaryArray) {
  310. let mustLen = (8 - (c + 1)) + ((c - 1) * 6);
  311. let fatLen = binaryArray.length;
  312. let diff = mustLen - fatLen;
  313. while (--diff >= 0) {
  314. binaryArray.unshift(0);
  315. }
  316. let binary = [];
  317. let _c = c;
  318. while (--_c >= 0) {
  319. binary.push(1);
  320. }
  321. binary.push(0);
  322. let i = 0, len = 8 - (c + 1);
  323. for (; i < len; ++i) {
  324. binary.push(binaryArray[i]);
  325. }
  326. for (let j = 0; j < c - 1; ++j) {
  327. binary.push(1);
  328. binary.push(0);
  329. let sum = 6;
  330. while (--sum >= 0) {
  331. binary.push(binaryArray[i++]);
  332. }
  333. }
  334. return binary;
  335. };
  336. let BASE64 = {
  337. /**
  338. *BASE64 Encode
  339. */
  340. encoder: function (str) {
  341. let base64_Index = [];
  342. let binaryArray = [];
  343. for (var i = 0, len = str.length; i < len; ++i) {
  344. let unicode = str.charCodeAt(i);
  345. let _tmpBinary = _toBinary(unicode);
  346. if (unicode < 0x80) {
  347. let _tmpdiff = 8 - _tmpBinary.length;
  348. while (--_tmpdiff >= 0) {
  349. _tmpBinary.unshift(0);
  350. }
  351. binaryArray = binaryArray.concat(_tmpBinary);
  352. } else if (unicode >= 0x80 && unicode <= 0x7FF) {
  353. binaryArray = binaryArray.concat(_toUTF8Binary(2, _tmpBinary));
  354. } else if (unicode >= 0x800 && unicode <= 0xFFFF) { // UTF-8 3byte
  355. binaryArray = binaryArray.concat(_toUTF8Binary(3, _tmpBinary));
  356. } else if (unicode >= 0x10000 && unicode <= 0x1FFFFF) { // UTF-8 4byte
  357. binaryArray = binaryArray.concat(_toUTF8Binary(4, _tmpBinary));
  358. } else if (unicode >= 0x200000 && unicode <= 0x3FFFFFF) { // UTF-8 5byte
  359. binaryArray = binaryArray.concat(_toUTF8Binary(5, _tmpBinary));
  360. } else if (unicode >= 4000000 && unicode <= 0x7FFFFFFF) { // UTF-8 6byte
  361. binaryArray = binaryArray.concat(_toUTF8Binary(6, _tmpBinary));
  362. }
  363. }
  364. let extra_Zero_Count = 0;
  365. for (var i = 0, len = binaryArray.length; i < len; i += 6) {
  366. let diff = (i + 6) - len;
  367. if (diff === 2) {
  368. extra_Zero_Count = 2;
  369. } else if (diff === 4) {
  370. extra_Zero_Count = 4;
  371. }
  372. // if(extra_Zero_Count > 0){
  373. // len += extra_Zero_Count+1;
  374. // }
  375. let _tmpExtra_Zero_Count = extra_Zero_Count;
  376. while (--_tmpExtra_Zero_Count >= 0) {
  377. binaryArray.push(0);
  378. }
  379. base64_Index.push(_toDecimal(binaryArray.slice(i, i + 6)));
  380. }
  381. let base64 = '';
  382. for (var i = 0, len = base64_Index.length; i < len; ++i) {
  383. base64 += BASE64_MAPPING[base64_Index[i]];
  384. }
  385. for (var i = 0, len = extra_Zero_Count / 2; i < len; ++i) {
  386. base64 += '=';
  387. }
  388. return base64;
  389. },
  390. /**
  391. *BASE64 Decode for UTF-8
  392. */
  393. decoder: function (_base64Str) {
  394. let _len = _base64Str.length;
  395. let extra_Zero_Count = 0;
  396. /**
  397. *计算在进行BASE64编码的时候,补了几个0
  398. */
  399. if (_base64Str.charAt(_len - 1) === '=') {
  400. // alert(_base64Str.charAt(_len-1));
  401. // alert(_base64Str.charAt(_len-2));
  402. if (_base64Str.charAt(_len - 2) === '=') { // 两个等号说明补了4个0
  403. extra_Zero_Count = 4;
  404. _base64Str = _base64Str.substring(0, _len - 2);
  405. } else { // 一个等号说明补了2个0
  406. extra_Zero_Count = 2;
  407. _base64Str = _base64Str.substring(0, _len - 1);
  408. }
  409. }
  410. let binaryArray = [];
  411. for (var i = 0, len = _base64Str.length; i < len; ++i) {
  412. let c = _base64Str.charAt(i);
  413. for (let j = 0, size = BASE64_MAPPING.length; j < size; ++j) {
  414. if (c === BASE64_MAPPING[j]) {
  415. let _tmp = _toBinary(j);
  416. /* 不足6位的补0 */
  417. let _tmpLen = _tmp.length;
  418. if (6 - _tmpLen > 0) {
  419. for (let k = 6 - _tmpLen; k > 0; --k) {
  420. _tmp.unshift(0);
  421. }
  422. }
  423. binaryArray = binaryArray.concat(_tmp);
  424. break;
  425. }
  426. }
  427. }
  428. if (extra_Zero_Count > 0) {
  429. binaryArray = binaryArray.slice(0, binaryArray.length - extra_Zero_Count);
  430. }
  431. let unicode = [];
  432. let unicodeBinary = [];
  433. for (var i = 0, len = binaryArray.length; i < len;) {
  434. if (binaryArray[i] === 0) {
  435. unicode = unicode.concat(_toDecimal(binaryArray.slice(i, i + 8)));
  436. i += 8;
  437. } else {
  438. let sum = 0;
  439. while (i < len) {
  440. if (binaryArray[i] === 1) {
  441. ++sum;
  442. } else {
  443. break;
  444. }
  445. ++i;
  446. }
  447. unicodeBinary = unicodeBinary.concat(binaryArray.slice(i + 1, i + 8 - sum));
  448. i += 8 - sum;
  449. while (sum > 1) {
  450. unicodeBinary = unicodeBinary.concat(binaryArray.slice(i + 2, i + 8));
  451. i += 8;
  452. --sum;
  453. }
  454. unicode = unicode.concat(_toDecimal(unicodeBinary));
  455. unicodeBinary = [];
  456. }
  457. }
  458. // ---------直接转换为结果
  459. let strResult = '';
  460. for (var i = 0, len = unicode.length; i < len; ++i) {
  461. strResult += String.fromCharCode(unicode[i]);
  462. }
  463. return strResult;
  464. }
  465. };
  466. let rotateLeft = function (lValue, iShiftBits) {
  467. return (lValue << iShiftBits) | (lValue >>> (32 - iShiftBits));
  468. };
  469. let addUnsigned = function (lX, lY) {
  470. let lX4, lY4, lX8, lY8, lResult;
  471. lX8 = (lX & 0x80000000);
  472. lY8 = (lY & 0x80000000);
  473. lX4 = (lX & 0x40000000);
  474. lY4 = (lY & 0x40000000);
  475. lResult = (lX & 0x3FFFFFFF) + (lY & 0x3FFFFFFF);
  476. if (lX4 & lY4) return (lResult ^ 0x80000000 ^ lX8 ^ lY8);
  477. if (lX4 | lY4) {
  478. if (lResult & 0x40000000) return (lResult ^ 0xC0000000 ^ lX8 ^ lY8);
  479. else return (lResult ^ 0x40000000 ^ lX8 ^ lY8);
  480. } else {
  481. return (lResult ^ lX8 ^ lY8);
  482. }
  483. };
  484. let F = function (x, y, z) {
  485. return (x & y) | ((~x) & z);
  486. };
  487. let G = function (x, y, z) {
  488. return (x & z) | (y & (~z));
  489. };
  490. let H = function (x, y, z) {
  491. return (x ^ y ^ z);
  492. };
  493. let I = function (x, y, z) {
  494. return (y ^ (x | (~z)));
  495. };
  496. let FF = function (a, b, c, d, x, s, ac) {
  497. a = addUnsigned(a, addUnsigned(addUnsigned(F(b, c, d), x), ac));
  498. return addUnsigned(rotateLeft(a, s), b);
  499. };
  500. let GG = function (a, b, c, d, x, s, ac) {
  501. a = addUnsigned(a, addUnsigned(addUnsigned(G(b, c, d), x), ac));
  502. return addUnsigned(rotateLeft(a, s), b);
  503. };
  504. let HH = function (a, b, c, d, x, s, ac) {
  505. a = addUnsigned(a, addUnsigned(addUnsigned(H(b, c, d), x), ac));
  506. return addUnsigned(rotateLeft(a, s), b);
  507. };
  508. let II = function (a, b, c, d, x, s, ac) {
  509. a = addUnsigned(a, addUnsigned(addUnsigned(I(b, c, d), x), ac));
  510. return addUnsigned(rotateLeft(a, s), b);
  511. };
  512. let convertToWordArray = function (string) {
  513. let lWordCount;
  514. let lMessageLength = string.length;
  515. let lNumberOfWordsTempOne = lMessageLength + 8;
  516. let lNumberOfWordsTempTwo = (lNumberOfWordsTempOne - (lNumberOfWordsTempOne % 64)) / 64;
  517. let lNumberOfWords = (lNumberOfWordsTempTwo + 1) * 16;
  518. let lWordArray = Array(lNumberOfWords - 1);
  519. let lBytePosition = 0;
  520. let lByteCount = 0;
  521. while (lByteCount < lMessageLength) {
  522. lWordCount = (lByteCount - (lByteCount % 4)) / 4;
  523. lBytePosition = (lByteCount % 4) * 8;
  524. lWordArray[lWordCount] = (lWordArray[lWordCount] | (string.charCodeAt(lByteCount) << lBytePosition));
  525. lByteCount++;
  526. }
  527. lWordCount = (lByteCount - (lByteCount % 4)) / 4;
  528. lBytePosition = (lByteCount % 4) * 8;
  529. lWordArray[lWordCount] = lWordArray[lWordCount] | (0x80 << lBytePosition);
  530. lWordArray[lNumberOfWords - 2] = lMessageLength << 3;
  531. lWordArray[lNumberOfWords - 1] = lMessageLength >>> 29;
  532. return lWordArray;
  533. };
  534. let wordToHex = function (lValue) {
  535. let WordToHexValue = '', WordToHexValueTemp = '', lByte, lCount;
  536. for (lCount = 0; lCount <= 3; lCount++) {
  537. lByte = (lValue >>> (lCount * 8)) & 255;
  538. WordToHexValueTemp = '0' + lByte.toString(16);
  539. WordToHexValue = WordToHexValue + WordToHexValueTemp.substr(WordToHexValueTemp.length - 2, 2);
  540. }
  541. return WordToHexValue;
  542. };
  543. let uTF8Encode = function (str) {
  544. str = str.replace(/\x0d\x0a/g, '\x0a');
  545. let output = '';
  546. for (let n = 0; n < str.length; n++) {
  547. let c = str.charCodeAt(n);
  548. if (c < 128) {
  549. output += String.fromCharCode(c);
  550. } else if ((c > 127) && (c < 2048)) {
  551. output += String.fromCharCode((c >> 6) | 192);
  552. output += String.fromCharCode((c & 63) | 128);
  553. } else {
  554. output += String.fromCharCode((c >> 12) | 224);
  555. output += String.fromCharCode(((c >> 6) & 63) | 128);
  556. output += String.fromCharCode((c & 63) | 128);
  557. }
  558. }
  559. return output;
  560. };
  561. var md5 = function (string) {
  562. let x = Array();
  563. let k, AA, BB, CC, DD, a, b, c, d;
  564. let S11 = 7, S12 = 12, S13 = 17, S14 = 22;
  565. let S21 = 5, S22 = 9, S23 = 14, S24 = 20;
  566. let S31 = 4, S32 = 11, S33 = 16, S34 = 23;
  567. let S41 = 6, S42 = 10, S43 = 15, S44 = 21;
  568. string = uTF8Encode(string);
  569. x = convertToWordArray(string);
  570. a = 0x67452301;
  571. b = 0xEFCDAB89;
  572. c = 0x98BADCFE;
  573. d = 0x10325476;
  574. for (k = 0; k < x.length; k += 16) {
  575. AA = a;
  576. BB = b;
  577. CC = c;
  578. DD = d;
  579. a = FF(a, b, c, d, x[k + 0], S11, 0xD76AA478);
  580. d = FF(d, a, b, c, x[k + 1], S12, 0xE8C7B756);
  581. c = FF(c, d, a, b, x[k + 2], S13, 0x242070DB);
  582. b = FF(b, c, d, a, x[k + 3], S14, 0xC1BDCEEE);
  583. a = FF(a, b, c, d, x[k + 4], S11, 0xF57C0FAF);
  584. d = FF(d, a, b, c, x[k + 5], S12, 0x4787C62A);
  585. c = FF(c, d, a, b, x[k + 6], S13, 0xA8304613);
  586. b = FF(b, c, d, a, x[k + 7], S14, 0xFD469501);
  587. a = FF(a, b, c, d, x[k + 8], S11, 0x698098D8);
  588. d = FF(d, a, b, c, x[k + 9], S12, 0x8B44F7AF);
  589. c = FF(c, d, a, b, x[k + 10], S13, 0xFFFF5BB1);
  590. b = FF(b, c, d, a, x[k + 11], S14, 0x895CD7BE);
  591. a = FF(a, b, c, d, x[k + 12], S11, 0x6B901122);
  592. d = FF(d, a, b, c, x[k + 13], S12, 0xFD987193);
  593. c = FF(c, d, a, b, x[k + 14], S13, 0xA679438E);
  594. b = FF(b, c, d, a, x[k + 15], S14, 0x49B40821);
  595. a = GG(a, b, c, d, x[k + 1], S21, 0xF61E2562);
  596. d = GG(d, a, b, c, x[k + 6], S22, 0xC040B340);
  597. c = GG(c, d, a, b, x[k + 11], S23, 0x265E5A51);
  598. b = GG(b, c, d, a, x[k + 0], S24, 0xE9B6C7AA);
  599. a = GG(a, b, c, d, x[k + 5], S21, 0xD62F105D);
  600. d = GG(d, a, b, c, x[k + 10], S22, 0x2441453);
  601. c = GG(c, d, a, b, x[k + 15], S23, 0xD8A1E681);
  602. b = GG(b, c, d, a, x[k + 4], S24, 0xE7D3FBC8);
  603. a = GG(a, b, c, d, x[k + 9], S21, 0x21E1CDE6);
  604. d = GG(d, a, b, c, x[k + 14], S22, 0xC33707D6);
  605. c = GG(c, d, a, b, x[k + 3], S23, 0xF4D50D87);
  606. b = GG(b, c, d, a, x[k + 8], S24, 0x455A14ED);
  607. a = GG(a, b, c, d, x[k + 13], S21, 0xA9E3E905);
  608. d = GG(d, a, b, c, x[k + 2], S22, 0xFCEFA3F8);
  609. c = GG(c, d, a, b, x[k + 7], S23, 0x676F02D9);
  610. b = GG(b, c, d, a, x[k + 12], S24, 0x8D2A4C8A);
  611. a = HH(a, b, c, d, x[k + 5], S31, 0xFFFA3942);
  612. d = HH(d, a, b, c, x[k + 8], S32, 0x8771F681);
  613. c = HH(c, d, a, b, x[k + 11], S33, 0x6D9D6122);
  614. b = HH(b, c, d, a, x[k + 14], S34, 0xFDE5380C);
  615. a = HH(a, b, c, d, x[k + 1], S31, 0xA4BEEA44);
  616. d = HH(d, a, b, c, x[k + 4], S32, 0x4BDECFA9);
  617. c = HH(c, d, a, b, x[k + 7], S33, 0xF6BB4B60);
  618. b = HH(b, c, d, a, x[k + 10], S34, 0xBEBFBC70);
  619. a = HH(a, b, c, d, x[k + 13], S31, 0x289B7EC6);
  620. d = HH(d, a, b, c, x[k + 0], S32, 0xEAA127FA);
  621. c = HH(c, d, a, b, x[k + 3], S33, 0xD4EF3085);
  622. b = HH(b, c, d, a, x[k + 6], S34, 0x4881D05);
  623. a = HH(a, b, c, d, x[k + 9], S31, 0xD9D4D039);
  624. d = HH(d, a, b, c, x[k + 12], S32, 0xE6DB99E5);
  625. c = HH(c, d, a, b, x[k + 15], S33, 0x1FA27CF8);
  626. b = HH(b, c, d, a, x[k + 2], S34, 0xC4AC5665);
  627. a = II(a, b, c, d, x[k + 0], S41, 0xF4292244);
  628. d = II(d, a, b, c, x[k + 7], S42, 0x432AFF97);
  629. c = II(c, d, a, b, x[k + 14], S43, 0xAB9423A7);
  630. b = II(b, c, d, a, x[k + 5], S44, 0xFC93A039);
  631. a = II(a, b, c, d, x[k + 12], S41, 0x655B59C3);
  632. d = II(d, a, b, c, x[k + 3], S42, 0x8F0CCC92);
  633. c = II(c, d, a, b, x[k + 10], S43, 0xFFEFF47D);
  634. b = II(b, c, d, a, x[k + 1], S44, 0x85845DD1);
  635. a = II(a, b, c, d, x[k + 8], S41, 0x6FA87E4F);
  636. d = II(d, a, b, c, x[k + 15], S42, 0xFE2CE6E0);
  637. c = II(c, d, a, b, x[k + 6], S43, 0xA3014314);
  638. b = II(b, c, d, a, x[k + 13], S44, 0x4E0811A1);
  639. a = II(a, b, c, d, x[k + 4], S41, 0xF7537E82);
  640. d = II(d, a, b, c, x[k + 11], S42, 0xBD3AF235);
  641. c = II(c, d, a, b, x[k + 2], S43, 0x2AD7D2BB);
  642. b = II(b, c, d, a, x[k + 9], S44, 0xEB86D391);
  643. a = addUnsigned(a, AA);
  644. b = addUnsigned(b, BB);
  645. c = addUnsigned(c, CC);
  646. d = addUnsigned(d, DD);
  647. }
  648. let tempValue = wordToHex(a) + wordToHex(b) + wordToHex(c) + wordToHex(d);
  649. return tempValue.toLowerCase();
  650. };
  651. let base64EncodeChars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/';
  652. let base64DecodeChars = new Array(-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 62, -1, -1, -1, 63, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, -1, -1, -1, -1, -1, -1, -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, -1, -1, -1, -1, -1, -1, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, -1, -1, -1, -1, -1);
  653. /**
  654. * base64编码
  655. * @param {Object} str
  656. */
  657. function base64encode (str) {
  658. let out, i, len;
  659. let c1, c2, c3;
  660. len = str.length;
  661. i = 0;
  662. out = '';
  663. while (i < len) {
  664. c1 = str.charCodeAt(i++) & 0xff;
  665. if (i === len) {
  666. out += base64EncodeChars.charAt(c1 >> 2);
  667. out += base64EncodeChars.charAt((c1 & 0x3) << 4);
  668. out += '==';
  669. break;
  670. }
  671. c2 = str.charCodeAt(i++);
  672. if (i === len) {
  673. out += base64EncodeChars.charAt(c1 >> 2);
  674. out += base64EncodeChars.charAt(((c1 & 0x3) << 4) | ((c2 & 0xF0) >> 4));
  675. out += base64EncodeChars.charAt((c2 & 0xF) << 2);
  676. out += '=';
  677. break;
  678. }
  679. c3 = str.charCodeAt(i++);
  680. out += base64EncodeChars.charAt(c1 >> 2);
  681. out += base64EncodeChars.charAt(((c1 & 0x3) << 4) | ((c2 & 0xF0) >> 4));
  682. out += base64EncodeChars.charAt(((c2 & 0xF) << 2) | ((c3 & 0xC0) >> 6));
  683. out += base64EncodeChars.charAt(c3 & 0x3F);
  684. }
  685. return out;
  686. }
  687. /**
  688. * base64解码
  689. * @param {Object} str
  690. */
  691. function base64decode (str) {
  692. let c1, c2, c3, c4;
  693. let i, len, out;
  694. len = str.length;
  695. i = 0;
  696. out = '';
  697. while (i < len) {
  698. /* c1 */
  699. do {
  700. c1 = base64DecodeChars[str.charCodeAt(i++) & 0xff];
  701. }
  702. while (i < len && c1 === -1);
  703. if (c1 === -1) { break; }
  704. /* c2 */
  705. do {
  706. c2 = base64DecodeChars[str.charCodeAt(i++) & 0xff];
  707. }
  708. while (i < len && c2 === -1);
  709. if (c2 === -1) { break; }
  710. out += String.fromCharCode((c1 << 2) | ((c2 & 0x30) >> 4));
  711. /* c3 */
  712. do {
  713. c3 = str.charCodeAt(i++) & 0xff;
  714. if (c3 === 61) { return out; }
  715. c3 = base64DecodeChars[c3];
  716. }
  717. while (i < len && c3 === -1);
  718. if (c3 === -1) { break; }
  719. out += String.fromCharCode(((c2 & 0XF) << 4) | ((c3 & 0x3C) >> 2));
  720. /* c4 */
  721. do {
  722. c4 = str.charCodeAt(i++) & 0xff;
  723. if (c4 === 61) { return out; }
  724. c4 = base64DecodeChars[c4];
  725. }
  726. while (i < len && c4 === -1);
  727. if (c4 === -1) { break; }
  728. out += String.fromCharCode(((c3 & 0x03) << 6) | c4);
  729. }
  730. return out;
  731. }
  732. export default CryptoJS;