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193 lines
7.1 KiB
193 lines
7.1 KiB
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function md5(string) { |
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var x = Array(); |
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var k, AA, BB, CC, DD, a, b, c, d; |
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var S11 = 7, S12 = 12, S13 = 17, S14 = 22; |
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var S21 = 5, S22 = 9, S23 = 14, S24 = 20; |
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var S31 = 4, S32 = 11, S33 = 16, S34 = 23; |
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var S41 = 6, S42 = 10, S43 = 15, S44 = 21; |
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string = Utf8Encode(string); |
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x = ConvertToWordArray(string); |
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a = 0x67452301; |
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b = 0xEFCDAB89; |
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c = 0x98BADCFE; |
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d = 0x10325476; |
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for (k = 0; k < x.length; k += 16) { |
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AA = a; |
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BB = b; |
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CC = c; |
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DD = d; |
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a = FF(a, b, c, d, x[k + 0], S11, 0xD76AA478); |
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d = FF(d, a, b, c, x[k + 1], S12, 0xE8C7B756); |
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c = FF(c, d, a, b, x[k + 2], S13, 0x242070DB); |
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b = FF(b, c, d, a, x[k + 3], S14, 0xC1BDCEEE); |
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a = FF(a, b, c, d, x[k + 4], S11, 0xF57C0FAF); |
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d = FF(d, a, b, c, x[k + 5], S12, 0x4787C62A); |
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c = FF(c, d, a, b, x[k + 6], S13, 0xA8304613); |
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b = FF(b, c, d, a, x[k + 7], S14, 0xFD469501); |
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a = FF(a, b, c, d, x[k + 8], S11, 0x698098D8); |
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d = FF(d, a, b, c, x[k + 9], S12, 0x8B44F7AF); |
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c = FF(c, d, a, b, x[k + 10], S13, 0xFFFF5BB1); |
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b = FF(b, c, d, a, x[k + 11], S14, 0x895CD7BE); |
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a = FF(a, b, c, d, x[k + 12], S11, 0x6B901122); |
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d = FF(d, a, b, c, x[k + 13], S12, 0xFD987193); |
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c = FF(c, d, a, b, x[k + 14], S13, 0xA679438E); |
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b = FF(b, c, d, a, x[k + 15], S14, 0x49B40821); |
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a = GG(a, b, c, d, x[k + 1], S21, 0xF61E2562); |
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d = GG(d, a, b, c, x[k + 6], S22, 0xC040B340); |
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c = GG(c, d, a, b, x[k + 11], S23, 0x265E5A51); |
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b = GG(b, c, d, a, x[k + 0], S24, 0xE9B6C7AA); |
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a = GG(a, b, c, d, x[k + 5], S21, 0xD62F105D); |
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d = GG(d, a, b, c, x[k + 10], S22, 0x2441453); |
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c = GG(c, d, a, b, x[k + 15], S23, 0xD8A1E681); |
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b = GG(b, c, d, a, x[k + 4], S24, 0xE7D3FBC8); |
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a = GG(a, b, c, d, x[k + 9], S21, 0x21E1CDE6); |
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d = GG(d, a, b, c, x[k + 14], S22, 0xC33707D6); |
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c = GG(c, d, a, b, x[k + 3], S23, 0xF4D50D87); |
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b = GG(b, c, d, a, x[k + 8], S24, 0x455A14ED); |
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a = GG(a, b, c, d, x[k + 13], S21, 0xA9E3E905); |
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d = GG(d, a, b, c, x[k + 2], S22, 0xFCEFA3F8); |
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c = GG(c, d, a, b, x[k + 7], S23, 0x676F02D9); |
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b = GG(b, c, d, a, x[k + 12], S24, 0x8D2A4C8A); |
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a = HH(a, b, c, d, x[k + 5], S31, 0xFFFA3942); |
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d = HH(d, a, b, c, x[k + 8], S32, 0x8771F681); |
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c = HH(c, d, a, b, x[k + 11], S33, 0x6D9D6122); |
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b = HH(b, c, d, a, x[k + 14], S34, 0xFDE5380C); |
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a = HH(a, b, c, d, x[k + 1], S31, 0xA4BEEA44); |
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d = HH(d, a, b, c, x[k + 4], S32, 0x4BDECFA9); |
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c = HH(c, d, a, b, x[k + 7], S33, 0xF6BB4B60); |
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b = HH(b, c, d, a, x[k + 10], S34, 0xBEBFBC70); |
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a = HH(a, b, c, d, x[k + 13], S31, 0x289B7EC6); |
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d = HH(d, a, b, c, x[k + 0], S32, 0xEAA127FA); |
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c = HH(c, d, a, b, x[k + 3], S33, 0xD4EF3085); |
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b = HH(b, c, d, a, x[k + 6], S34, 0x4881D05); |
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a = HH(a, b, c, d, x[k + 9], S31, 0xD9D4D039); |
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d = HH(d, a, b, c, x[k + 12], S32, 0xE6DB99E5); |
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c = HH(c, d, a, b, x[k + 15], S33, 0x1FA27CF8); |
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b = HH(b, c, d, a, x[k + 2], S34, 0xC4AC5665); |
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a = II(a, b, c, d, x[k + 0], S41, 0xF4292244); |
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d = II(d, a, b, c, x[k + 7], S42, 0x432AFF97); |
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c = II(c, d, a, b, x[k + 14], S43, 0xAB9423A7); |
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b = II(b, c, d, a, x[k + 5], S44, 0xFC93A039); |
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a = II(a, b, c, d, x[k + 12], S41, 0x655B59C3); |
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d = II(d, a, b, c, x[k + 3], S42, 0x8F0CCC92); |
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c = II(c, d, a, b, x[k + 10], S43, 0xFFEFF47D); |
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b = II(b, c, d, a, x[k + 1], S44, 0x85845DD1); |
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a = II(a, b, c, d, x[k + 8], S41, 0x6FA87E4F); |
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d = II(d, a, b, c, x[k + 15], S42, 0xFE2CE6E0); |
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c = II(c, d, a, b, x[k + 6], S43, 0xA3014314); |
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b = II(b, c, d, a, x[k + 13], S44, 0x4E0811A1); |
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a = II(a, b, c, d, x[k + 4], S41, 0xF7537E82); |
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d = II(d, a, b, c, x[k + 11], S42, 0xBD3AF235); |
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c = II(c, d, a, b, x[k + 2], S43, 0x2AD7D2BB); |
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b = II(b, c, d, a, x[k + 9], S44, 0xEB86D391); |
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a = AddUnsigned(a, AA); |
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b = AddUnsigned(b, BB); |
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c = AddUnsigned(c, CC); |
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d = AddUnsigned(d, DD); |
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} |
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var temp = WordToHex(a) + WordToHex(b) + WordToHex(c) + WordToHex(d); |
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return temp.toLowerCase(); |
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} |
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function RotateLeft(lValue, iShiftBits) { |
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return (lValue << iShiftBits) | (lValue >>> (32 - iShiftBits)); |
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} |
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function AddUnsigned(lX, lY) { |
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var lX4, lY4, lX8, lY8, lResult; |
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lX8 = (lX & 0x80000000); |
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lY8 = (lY & 0x80000000); |
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lX4 = (lX & 0x40000000); |
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lY4 = (lY & 0x40000000); |
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lResult = (lX & 0x3FFFFFFF) + (lY & 0x3FFFFFFF); |
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if (lX4 & lY4) { |
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return (lResult ^ 0x80000000 ^ lX8 ^ lY8); |
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} |
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if (lX4 | lY4) { |
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if (lResult & 0x40000000) { |
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return (lResult ^ 0xC0000000 ^ lX8 ^ lY8); |
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} else { |
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return (lResult ^ 0x40000000 ^ lX8 ^ lY8); |
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} |
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} else { |
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return (lResult ^ lX8 ^ lY8); |
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} |
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} |
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function F(x, y, z) { |
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return (x & y) | ((~x) & z); |
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} |
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function G(x, y, z) { |
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return (x & z) | (y & (~z)); |
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} |
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function H(x, y, z) { |
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return (x ^ y ^ z); |
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} |
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function I(x, y, z) { |
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return (y ^ (x | (~z))); |
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} |
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function FF(a, b, c, d, x, s, ac) { |
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a = AddUnsigned(a, AddUnsigned(AddUnsigned(F(b, c, d), x), ac)); |
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return AddUnsigned(RotateLeft(a, s), b); |
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} |
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function GG(a, b, c, d, x, s, ac) { |
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a = AddUnsigned(a, AddUnsigned(AddUnsigned(G(b, c, d), x), ac)); |
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return AddUnsigned(RotateLeft(a, s), b); |
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} |
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function HH(a, b, c, d, x, s, ac) { |
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a = AddUnsigned(a, AddUnsigned(AddUnsigned(H(b, c, d), x), ac)); |
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return AddUnsigned(RotateLeft(a, s), b); |
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} |
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function II(a, b, c, d, x, s, ac) { |
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a = AddUnsigned(a, AddUnsigned(AddUnsigned(I(b, c, d), x), ac)); |
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return AddUnsigned(RotateLeft(a, s), b); |
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} |
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function ConvertToWordArray(string) { |
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var lWordCount; |
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var lMessageLength = string.length; |
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var lNumberOfWords_temp1 = lMessageLength + 8; |
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var lNumberOfWords_temp2 = (lNumberOfWords_temp1 - (lNumberOfWords_temp1 % 64)) / 64; |
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var lNumberOfWords = (lNumberOfWords_temp2 + 1) * 16; |
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var lWordArray = Array(lNumberOfWords - 1); |
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var lBytePosition = 0; |
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var lByteCount = 0; |
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while (lByteCount < lMessageLength) { |
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lWordCount = (lByteCount - (lByteCount % 4)) / 4; |
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lBytePosition = (lByteCount % 4) * 8; |
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lWordArray[lWordCount] = (lWordArray[lWordCount] | (string.charCodeAt(lByteCount) << lBytePosition)); |
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lByteCount++; |
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} |
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lWordCount = (lByteCount - (lByteCount % 4)) / 4; |
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lBytePosition = (lByteCount % 4) * 8; |
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lWordArray[lWordCount] = lWordArray[lWordCount] | (0x80 << lBytePosition); |
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lWordArray[lNumberOfWords - 2] = lMessageLength << 3; |
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lWordArray[lNumberOfWords - 1] = lMessageLength >>> 29; |
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return lWordArray; |
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} |
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function WordToHex(lValue) { |
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var WordToHexValue = "", WordToHexValue_temp = "", lByte, lCount; |
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for (lCount = 0; lCount <= 3; lCount++) { |
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lByte = (lValue >>> (lCount * 8)) & 255; |
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WordToHexValue_temp = "0" + lByte.toString(16); |
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WordToHexValue = WordToHexValue + WordToHexValue_temp.substr(WordToHexValue_temp.length - 2, 2); |
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} |
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return WordToHexValue; |
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} |
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function Utf8Encode(string) { |
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var utftext = ""; |
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for (var n = 0; n < string.length; n++) { |
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var c = string.charCodeAt(n); |
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if (c < 128) { |
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utftext += String.fromCharCode(c); |
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} else if ((c > 127) && (c < 2048)) { |
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utftext += String.fromCharCode((c >> 6) | 192); |
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utftext += String.fromCharCode((c & 63) | 128); |
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} else { |
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utftext += String.fromCharCode((c >> 12) | 224); |
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utftext += String.fromCharCode(((c >> 6) & 63) | 128); |
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utftext += String.fromCharCode((c & 63) | 128); |
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} |
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} |
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return utftext; |
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} |
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module.exports = { |
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md5: md5 |
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} |