diff options
| author | Pliable Pixels <pliablepixels@gmail.com> | 2017-09-21 12:49:18 -0400 |
|---|---|---|
| committer | Pliable Pixels <pliablepixels@gmail.com> | 2017-09-21 12:49:18 -0400 |
| commit | b28028ac4082842143b0f528d6bc539da6ccb419 (patch) | |
| tree | 1e26ea969a781ed8e323fca4e3c76345113fc694 /www/lib/crypto-js/enc-base64.js | |
| parent | 676270d21beed31d767a06c89522198c77d5d865 (diff) | |
mega changes, including updates and X
Diffstat (limited to 'www/lib/crypto-js/enc-base64.js')
| -rw-r--r-- | www/lib/crypto-js/enc-base64.js | 124 |
1 files changed, 124 insertions, 0 deletions
diff --git a/www/lib/crypto-js/enc-base64.js b/www/lib/crypto-js/enc-base64.js new file mode 100644 index 00000000..e16a3cbb --- /dev/null +++ b/www/lib/crypto-js/enc-base64.js @@ -0,0 +1,124 @@ +;(function (root, factory) { + if (typeof exports === "object") { + // CommonJS + module.exports = exports = factory(require("./core")); + } + else if (typeof define === "function" && define.amd) { + // AMD + define(["./core"], factory); + } + else { + // Global (browser) + factory(root.CryptoJS); + } +}(this, function (CryptoJS) { + + (function () { + // Shortcuts + var C = CryptoJS; + var C_lib = C.lib; + var WordArray = C_lib.WordArray; + var C_enc = C.enc; + + /** + * Base64 encoding strategy. + */ + var Base64 = C_enc.Base64 = { + /** + * Converts a word array to a Base64 string. + * + * @param {WordArray} wordArray The word array. + * + * @return {string} The Base64 string. + * + * @static + * + * @example + * + * var base64String = CryptoJS.enc.Base64.stringify(wordArray); + */ + stringify: function (wordArray) { + // Shortcuts + var words = wordArray.words; + var sigBytes = wordArray.sigBytes; + var map = this._map; + + // Clamp excess bits + wordArray.clamp(); + + // Convert + var base64Chars = []; + for (var i = 0; i < sigBytes; i += 3) { + var byte1 = (words[i >>> 2] >>> (24 - (i % 4) * 8)) & 0xff; + var byte2 = (words[(i + 1) >>> 2] >>> (24 - ((i + 1) % 4) * 8)) & 0xff; + var byte3 = (words[(i + 2) >>> 2] >>> (24 - ((i + 2) % 4) * 8)) & 0xff; + + var triplet = (byte1 << 16) | (byte2 << 8) | byte3; + + for (var j = 0; (j < 4) && (i + j * 0.75 < sigBytes); j++) { + base64Chars.push(map.charAt((triplet >>> (6 * (3 - j))) & 0x3f)); + } + } + + // Add padding + var paddingChar = map.charAt(64); + if (paddingChar) { + while (base64Chars.length % 4) { + base64Chars.push(paddingChar); + } + } + + return base64Chars.join(''); + }, + + /** + * Converts a Base64 string to a word array. + * + * @param {string} base64Str The Base64 string. + * + * @return {WordArray} The word array. + * + * @static + * + * @example + * + * var wordArray = CryptoJS.enc.Base64.parse(base64String); + */ + parse: function (base64Str) { + // Shortcuts + var base64StrLength = base64Str.length; + var map = this._map; + + // Ignore padding + var paddingChar = map.charAt(64); + if (paddingChar) { + var paddingIndex = base64Str.indexOf(paddingChar); + if (paddingIndex != -1) { + base64StrLength = paddingIndex; + } + } + + // Convert + var words = []; + var nBytes = 0; + for (var i = 0; i < base64StrLength; i++) { + if (i % 4) { + var bits1 = map.indexOf(base64Str.charAt(i - 1)) << ((i % 4) * 2); + var bits2 = map.indexOf(base64Str.charAt(i)) >>> (6 - (i % 4) * 2); + var bitsCombined = bits1 | bits2; + words[nBytes >>> 2] |= (bitsCombined) << (24 - (nBytes % 4) * 8); + nBytes++; + } + } + + return WordArray.create(words, nBytes); + }, + + _map: 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=' + }; + }()); + + + return CryptoJS.enc.Base64; + +}));
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