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class RandomGenerator {\n\n /**\n * discuss at: http://locutus.io/php/sha1/\n * original by: Webtoolkit.info (http://www.webtoolkit.info/)\n * improved by: Michael White (http://getsprink.com)\n * improved by: Kevin van Zonneveld (http://kvz.io)\n * input by: Brett Zamir (http://brett-zamir.me)\n * note 1: Keep in mind that in accordance with PHP, the whole string is buffered and then\n * note 1: hashed. If available, we'd recommend using Node's native crypto modules directly\n * note 1: in a steaming fashion for faster and more efficient hashing\n * example 1: sha1('Kevin van Zonneveld')\n * returns 1: '54916d2e62f65b3afa6e192e6a601cdbe5cb5897'\n */\n static sha1(str: string) {\n\n let _rotLeft = function(n: any, s: any) {\n let t4 = (n << s) | (n >>> (32 - s));\n return t4;\n };\n\n let _cvtHex = function(val: any) {\n let str = \"\";\n let i;\n let v;\n\n for (i = 7; i >= 0; i--) {\n v = (val >>> (i * 4)) & 0x0f;\n str += v.toString(16);\n }\n return str;\n };\n\n let blockstart;\n let i, j;\n let W = new Array(80);\n let H0 = 0x67452301;\n let H1 = 0xEFCDAB89;\n let H2 = 0x98BADCFE;\n let H3 = 0x10325476;\n let H4 = 0xC3D2E1F0;\n let A, B, C, D, E;\n let temp;\n\n // utf8_encode\n str = /*unescape*/(encodeURIComponent(str));\n let strLen = str.length;\n\n let wordArray = [];\n for (i = 0; i < strLen - 3; i += 4) {\n j = str.charCodeAt(i) << 24 |\n str.charCodeAt(i + 1) << 16 |\n str.charCodeAt(i + 2) << 8 |\n str.charCodeAt(i + 3);\n wordArray.push(j);\n }\n\n switch (strLen % 4) {\n case 0:\n i = 0x080000000;\n break;\n case 1:\n i = str.charCodeAt(strLen - 1) << 24 | 0x0800000;\n break;\n case 2:\n i = str.charCodeAt(strLen - 2) << 24 | str.charCodeAt(strLen - 1) << 16 | 0x08000;\n break;\n case 3:\n i = str.charCodeAt(strLen - 3) << 24 |\n str.charCodeAt(strLen - 2) << 16 |\n str.charCodeAt(strLen - 1) <<\n 8 | 0x80;\n break;\n }\n\n wordArray.push(i);\n\n while ((wordArray.length % 16) !== 14) {\n wordArray.push(0);\n }\n\n wordArray.push(strLen >>> 29);\n wordArray.push((strLen << 3) & 0x0ffffffff);\n\n for (blockstart = 0; blockstart < wordArray.length; blockstart += 16) {\n for (i = 0; i < 16; i++) {\n W[i] = wordArray[blockstart + i];\n }\n for (i = 16; i <= 79; i++) {\n W[i] = _rotLeft(W[i - 3] ^ W[i - 8] ^ W[i - 14] ^ W[i - 16], 1);\n }\n\n A = H0;\n B = H1;\n C = H2;\n D = H3;\n E = H4;\n\n for (i = 0; i <= 19; i++) {\n temp = (_rotLeft(A, 5) + ((B & C) | (~B & D)) + E + W[i] + 0x5A827999) & 0x0ffffffff;\n E = D;\n D = C;\n C = _rotLeft(B, 30);\n B = A;\n A = temp;\n }\n\n for (i = 20; i <= 39; i++) {\n temp = (_rotLeft(A, 5) + (B ^ C ^ D) + E + W[i] + 0x6ED9EBA1) & 0x0ffffffff;\n E = D;\n D = C;\n C = _rotLeft(B, 30);\n B = A;\n A = temp;\n }\n\n for (i = 40; i <= 59; i++) {\n temp = (_rotLeft(A, 5) + ((B & C) | (B & D) | (C & D)) + E + W[i] + 0x8F1BBCDC) & 0x0ffffffff;\n E = D;\n D = C;\n C = _rotLeft(B, 30);\n B = A;\n A = temp;\n }\n\n for (i = 60; i <= 79; i++) {\n temp = (_rotLeft(A, 5) + (B ^ C ^ D) + E + W[i] + 0xCA62C1D6) & 0x0ffffffff;\n E = D;\n D = C;\n C = _rotLeft(B, 30);\n B = A;\n A = temp;\n }\n\n H0 = (H0 + A) & 0x0ffffffff;\n H1 = (H1 + B) & 0x0ffffffff;\n H2 = (H2 + C) & 0x0ffffffff;\n H3 = (H3 + D) & 0x0ffffffff;\n H4 = (H4 + E) & 0x0ffffffff;\n }\n\n temp = _cvtHex(H0) + _cvtHex(H1) + _cvtHex(H2) + _cvtHex(H3) + _cvtHex(H4);\n return temp.toLowerCase();\n }\n\n /**\n * RFC4122 compliant UUID v4 generator.\n */\n static uuid4(): string {\n return \"xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx\".replace(/[xy]/g, (c) => {\n const r = Math.random() * 16 | 0, v = c === \"x\" ? r : (r & 0x3 | 0x8);\n return v.toString(16);\n });\n }\n\n}"],"sourceRoot":".."} |