md5-browser.js 6.9 KB

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  1. "use strict";
  2. Object.defineProperty(exports, "__esModule", {
  3. value: true
  4. });
  5. exports.default = void 0;
  6. /*
  7. * Browser-compatible JavaScript MD5
  8. *
  9. * Modification of JavaScript MD5
  10. * https://github.com/blueimp/JavaScript-MD5
  11. *
  12. * Copyright 2011, Sebastian Tschan
  13. * https://blueimp.net
  14. *
  15. * Licensed under the MIT license:
  16. * https://opensource.org/licenses/MIT
  17. *
  18. * Based on
  19. * A JavaScript implementation of the RSA Data Security, Inc. MD5 Message
  20. * Digest Algorithm, as defined in RFC 1321.
  21. * Version 2.2 Copyright (C) Paul Johnston 1999 - 2009
  22. * Other contributors: Greg Holt, Andrew Kepert, Ydnar, Lostinet
  23. * Distributed under the BSD License
  24. * See http://pajhome.org.uk/crypt/md5 for more info.
  25. */
  26. function md5(bytes) {
  27. if (typeof bytes === 'string') {
  28. const msg = unescape(encodeURIComponent(bytes)); // UTF8 escape
  29. bytes = new Uint8Array(msg.length);
  30. for (let i = 0; i < msg.length; ++i) {
  31. bytes[i] = msg.charCodeAt(i);
  32. }
  33. }
  34. return md5ToHexEncodedArray(wordsToMd5(bytesToWords(bytes), bytes.length * 8));
  35. }
  36. /*
  37. * Convert an array of little-endian words to an array of bytes
  38. */
  39. function md5ToHexEncodedArray(input) {
  40. const output = [];
  41. const length32 = input.length * 32;
  42. const hexTab = '0123456789abcdef';
  43. for (let i = 0; i < length32; i += 8) {
  44. const x = input[i >> 5] >>> i % 32 & 0xff;
  45. const hex = parseInt(hexTab.charAt(x >>> 4 & 0x0f) + hexTab.charAt(x & 0x0f), 16);
  46. output.push(hex);
  47. }
  48. return output;
  49. }
  50. /**
  51. * Calculate output length with padding and bit length
  52. */
  53. function getOutputLength(inputLength8) {
  54. return (inputLength8 + 64 >>> 9 << 4) + 14 + 1;
  55. }
  56. /*
  57. * Calculate the MD5 of an array of little-endian words, and a bit length.
  58. */
  59. function wordsToMd5(x, len) {
  60. /* append padding */
  61. x[len >> 5] |= 0x80 << len % 32;
  62. x[getOutputLength(len) - 1] = len;
  63. let a = 1732584193;
  64. let b = -271733879;
  65. let c = -1732584194;
  66. let d = 271733878;
  67. for (let i = 0; i < x.length; i += 16) {
  68. const olda = a;
  69. const oldb = b;
  70. const oldc = c;
  71. const oldd = d;
  72. a = md5ff(a, b, c, d, x[i], 7, -680876936);
  73. d = md5ff(d, a, b, c, x[i + 1], 12, -389564586);
  74. c = md5ff(c, d, a, b, x[i + 2], 17, 606105819);
  75. b = md5ff(b, c, d, a, x[i + 3], 22, -1044525330);
  76. a = md5ff(a, b, c, d, x[i + 4], 7, -176418897);
  77. d = md5ff(d, a, b, c, x[i + 5], 12, 1200080426);
  78. c = md5ff(c, d, a, b, x[i + 6], 17, -1473231341);
  79. b = md5ff(b, c, d, a, x[i + 7], 22, -45705983);
  80. a = md5ff(a, b, c, d, x[i + 8], 7, 1770035416);
  81. d = md5ff(d, a, b, c, x[i + 9], 12, -1958414417);
  82. c = md5ff(c, d, a, b, x[i + 10], 17, -42063);
  83. b = md5ff(b, c, d, a, x[i + 11], 22, -1990404162);
  84. a = md5ff(a, b, c, d, x[i + 12], 7, 1804603682);
  85. d = md5ff(d, a, b, c, x[i + 13], 12, -40341101);
  86. c = md5ff(c, d, a, b, x[i + 14], 17, -1502002290);
  87. b = md5ff(b, c, d, a, x[i + 15], 22, 1236535329);
  88. a = md5gg(a, b, c, d, x[i + 1], 5, -165796510);
  89. d = md5gg(d, a, b, c, x[i + 6], 9, -1069501632);
  90. c = md5gg(c, d, a, b, x[i + 11], 14, 643717713);
  91. b = md5gg(b, c, d, a, x[i], 20, -373897302);
  92. a = md5gg(a, b, c, d, x[i + 5], 5, -701558691);
  93. d = md5gg(d, a, b, c, x[i + 10], 9, 38016083);
  94. c = md5gg(c, d, a, b, x[i + 15], 14, -660478335);
  95. b = md5gg(b, c, d, a, x[i + 4], 20, -405537848);
  96. a = md5gg(a, b, c, d, x[i + 9], 5, 568446438);
  97. d = md5gg(d, a, b, c, x[i + 14], 9, -1019803690);
  98. c = md5gg(c, d, a, b, x[i + 3], 14, -187363961);
  99. b = md5gg(b, c, d, a, x[i + 8], 20, 1163531501);
  100. a = md5gg(a, b, c, d, x[i + 13], 5, -1444681467);
  101. d = md5gg(d, a, b, c, x[i + 2], 9, -51403784);
  102. c = md5gg(c, d, a, b, x[i + 7], 14, 1735328473);
  103. b = md5gg(b, c, d, a, x[i + 12], 20, -1926607734);
  104. a = md5hh(a, b, c, d, x[i + 5], 4, -378558);
  105. d = md5hh(d, a, b, c, x[i + 8], 11, -2022574463);
  106. c = md5hh(c, d, a, b, x[i + 11], 16, 1839030562);
  107. b = md5hh(b, c, d, a, x[i + 14], 23, -35309556);
  108. a = md5hh(a, b, c, d, x[i + 1], 4, -1530992060);
  109. d = md5hh(d, a, b, c, x[i + 4], 11, 1272893353);
  110. c = md5hh(c, d, a, b, x[i + 7], 16, -155497632);
  111. b = md5hh(b, c, d, a, x[i + 10], 23, -1094730640);
  112. a = md5hh(a, b, c, d, x[i + 13], 4, 681279174);
  113. d = md5hh(d, a, b, c, x[i], 11, -358537222);
  114. c = md5hh(c, d, a, b, x[i + 3], 16, -722521979);
  115. b = md5hh(b, c, d, a, x[i + 6], 23, 76029189);
  116. a = md5hh(a, b, c, d, x[i + 9], 4, -640364487);
  117. d = md5hh(d, a, b, c, x[i + 12], 11, -421815835);
  118. c = md5hh(c, d, a, b, x[i + 15], 16, 530742520);
  119. b = md5hh(b, c, d, a, x[i + 2], 23, -995338651);
  120. a = md5ii(a, b, c, d, x[i], 6, -198630844);
  121. d = md5ii(d, a, b, c, x[i + 7], 10, 1126891415);
  122. c = md5ii(c, d, a, b, x[i + 14], 15, -1416354905);
  123. b = md5ii(b, c, d, a, x[i + 5], 21, -57434055);
  124. a = md5ii(a, b, c, d, x[i + 12], 6, 1700485571);
  125. d = md5ii(d, a, b, c, x[i + 3], 10, -1894986606);
  126. c = md5ii(c, d, a, b, x[i + 10], 15, -1051523);
  127. b = md5ii(b, c, d, a, x[i + 1], 21, -2054922799);
  128. a = md5ii(a, b, c, d, x[i + 8], 6, 1873313359);
  129. d = md5ii(d, a, b, c, x[i + 15], 10, -30611744);
  130. c = md5ii(c, d, a, b, x[i + 6], 15, -1560198380);
  131. b = md5ii(b, c, d, a, x[i + 13], 21, 1309151649);
  132. a = md5ii(a, b, c, d, x[i + 4], 6, -145523070);
  133. d = md5ii(d, a, b, c, x[i + 11], 10, -1120210379);
  134. c = md5ii(c, d, a, b, x[i + 2], 15, 718787259);
  135. b = md5ii(b, c, d, a, x[i + 9], 21, -343485551);
  136. a = safeAdd(a, olda);
  137. b = safeAdd(b, oldb);
  138. c = safeAdd(c, oldc);
  139. d = safeAdd(d, oldd);
  140. }
  141. return [a, b, c, d];
  142. }
  143. /*
  144. * Convert an array bytes to an array of little-endian words
  145. * Characters >255 have their high-byte silently ignored.
  146. */
  147. function bytesToWords(input) {
  148. if (input.length === 0) {
  149. return [];
  150. }
  151. const length8 = input.length * 8;
  152. const output = new Uint32Array(getOutputLength(length8));
  153. for (let i = 0; i < length8; i += 8) {
  154. output[i >> 5] |= (input[i / 8] & 0xff) << i % 32;
  155. }
  156. return output;
  157. }
  158. /*
  159. * Add integers, wrapping at 2^32. This uses 16-bit operations internally
  160. * to work around bugs in some JS interpreters.
  161. */
  162. function safeAdd(x, y) {
  163. const lsw = (x & 0xffff) + (y & 0xffff);
  164. const msw = (x >> 16) + (y >> 16) + (lsw >> 16);
  165. return msw << 16 | lsw & 0xffff;
  166. }
  167. /*
  168. * Bitwise rotate a 32-bit number to the left.
  169. */
  170. function bitRotateLeft(num, cnt) {
  171. return num << cnt | num >>> 32 - cnt;
  172. }
  173. /*
  174. * These functions implement the four basic operations the algorithm uses.
  175. */
  176. function md5cmn(q, a, b, x, s, t) {
  177. return safeAdd(bitRotateLeft(safeAdd(safeAdd(a, q), safeAdd(x, t)), s), b);
  178. }
  179. function md5ff(a, b, c, d, x, s, t) {
  180. return md5cmn(b & c | ~b & d, a, b, x, s, t);
  181. }
  182. function md5gg(a, b, c, d, x, s, t) {
  183. return md5cmn(b & d | c & ~d, a, b, x, s, t);
  184. }
  185. function md5hh(a, b, c, d, x, s, t) {
  186. return md5cmn(b ^ c ^ d, a, b, x, s, t);
  187. }
  188. function md5ii(a, b, c, d, x, s, t) {
  189. return md5cmn(c ^ (b | ~d), a, b, x, s, t);
  190. }
  191. var _default = md5;
  192. exports.default = _default;