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(function () { |
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// Shortcuts |
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var C = CryptoJS; |
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var C_lib = C.lib; |
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var WordArray = C_lib.WordArray; |
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var C_enc = C.enc; |
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/** |
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* UTF-16 BE encoding strategy. |
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*/ |
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var Utf16BE = C_enc.Utf16 = C_enc.Utf16BE = { |
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/** |
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* Converts a word array to a UTF-16 BE string. |
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* |
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* @param {WordArray} wordArray The word array. |
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* |
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* @return {string} The UTF-16 BE string. |
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* |
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* @static |
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* |
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* @example |
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* |
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* var utf16String = CryptoJS.enc.Utf16.stringify(wordArray); |
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*/ |
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stringify: function (wordArray) { |
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// Shortcuts |
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var words = wordArray.words; |
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var sigBytes = wordArray.sigBytes; |
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// Convert |
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var utf16Chars = []; |
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for (var i = 0; i < sigBytes; i += 2) { |
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var codePoint = (words[i >>> 2] >>> (16 - (i % 4) * 8)) & 0xffff; |
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utf16Chars.push(String.fromCharCode(codePoint)); |
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} |
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return utf16Chars.join(''); |
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}, |
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/** |
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* Converts a UTF-16 BE string to a word array. |
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* |
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* @param {string} utf16Str The UTF-16 BE string. |
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* |
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* @return {WordArray} The word array. |
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* |
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* @static |
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* |
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* @example |
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* |
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* var wordArray = CryptoJS.enc.Utf16.parse(utf16String); |
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*/ |
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parse: function (utf16Str) { |
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// Shortcut |
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var utf16StrLength = utf16Str.length; |
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// Convert |
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var words = []; |
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for (var i = 0; i < utf16StrLength; i++) { |
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words[i >>> 1] |= utf16Str.charCodeAt(i) << (16 - (i % 2) * 16); |
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} |
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return WordArray.create(words, utf16StrLength * 2); |
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} |
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}; |
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/** |
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* UTF-16 LE encoding strategy. |
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*/ |
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C_enc.Utf16LE = { |
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/** |
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* Converts a word array to a UTF-16 LE string. |
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* |
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* @param {WordArray} wordArray The word array. |
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* |
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* @return {string} The UTF-16 LE string. |
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* |
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* @static |
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* |
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* @example |
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* |
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* var utf16Str = CryptoJS.enc.Utf16LE.stringify(wordArray); |
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*/ |
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stringify: function (wordArray) { |
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// Shortcuts |
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var words = wordArray.words; |
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var sigBytes = wordArray.sigBytes; |
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// Convert |
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var utf16Chars = []; |
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for (var i = 0; i < sigBytes; i += 2) { |
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var codePoint = swapEndian((words[i >>> 2] >>> (16 - (i % 4) * 8)) & 0xffff); |
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utf16Chars.push(String.fromCharCode(codePoint)); |
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} |
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return utf16Chars.join(''); |
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}, |
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/** |
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* Converts a UTF-16 LE string to a word array. |
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* |
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* @param {string} utf16Str The UTF-16 LE string. |
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* |
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* @return {WordArray} The word array. |
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* |
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* @static |
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* |
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* @example |
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* |
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* var wordArray = CryptoJS.enc.Utf16LE.parse(utf16Str); |
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*/ |
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parse: function (utf16Str) { |
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// Shortcut |
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var utf16StrLength = utf16Str.length; |
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// Convert |
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var words = []; |
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for (var i = 0; i < utf16StrLength; i++) { |
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words[i >>> 1] |= swapEndian(utf16Str.charCodeAt(i) << (16 - (i % 2) * 16)); |
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} |
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return WordArray.create(words, utf16StrLength * 2); |
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} |
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}; |
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function swapEndian(word) { |
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return ((word << 8) & 0xff00ff00) | ((word >>> 8) & 0x00ff00ff); |
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} |
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}()); |