function sha1(str) { // discuss at: http://phpjs.org/functions/sha1/ // original by: Webtoolkit.info (http://www.webtoolkit.info/) // improved by: Michael White (http://getsprink.com) // improved by: Kevin van Zonneveld (http://kevin.vanzonneveld.net) // input by: Brett Zamir (http://brett-zamir.me) // example 1: sha1('Kevin van Zonneveld'); // returns 1: '54916d2e62f65b3afa6e192e6a601cdbe5cb5897' var rotate_left = function(n, s) { var t4 = (n << s) | (n >>> (32 - s)); return t4; }; /*var lsb_hex = function (val) { // Not in use; needed? var str=""; var i; var vh; var vl; for ( i=0; i<=6; i+=2 ) { vh = (val>>>(i*4+4))&0x0f; vl = (val>>>(i*4))&0x0f; str += vh.toString(16) + vl.toString(16); } return str; };*/ var cvt_hex = function(val) { var str = ''; var i; var v; for (i = 7; i >= 0; i--) { v = (val >>> (i * 4)) & 0x0f; str += v.toString(16); } return str; }; var blockstart; var i, j; var W = new Array(80); var H0 = 0x67452301; var H1 = 0xEFCDAB89; var H2 = 0x98BADCFE; var H3 = 0x10325476; var H4 = 0xC3D2E1F0; var A, B, C, D, E; var temp; // utf8_encode str = unescape(encodeURIComponent(str)); var str_len = str.length; var word_array = []; for (i = 0; i < str_len - 3; i += 4) { j = str.charCodeAt(i) << 24 | str.charCodeAt(i + 1) << 16 | str.charCodeAt(i + 2) << 8 | str.charCodeAt(i + 3); word_array.push(j); } switch (str_len % 4) { case 0: i = 0x080000000; break; case 1: i = str.charCodeAt(str_len - 1) << 24 | 0x0800000; break; case 2: i = str.charCodeAt(str_len - 2) << 24 | str.charCodeAt(str_len - 1) << 16 | 0x08000; break; case 3: i = str.charCodeAt(str_len - 3) << 24 | str.charCodeAt(str_len - 2) << 16 | str.charCodeAt(str_len - 1) << 8 | 0x80; break; } word_array.push(i); while ((word_array.length % 16) != 14) { word_array.push(0); } word_array.push(str_len >>> 29); word_array.push((str_len << 3) & 0x0ffffffff); for (blockstart = 0; blockstart < word_array.length; blockstart += 16) { for (i = 0; i < 16; i++) { W[i] = word_array[blockstart + i]; } for (i = 16; i <= 79; i++) { W[i] = rotate_left(W[i - 3] ^ W[i - 8] ^ W[i - 14] ^ W[i - 16], 1); } A = H0; B = H1; C = H2; D = H3; E = H4; for (i = 0; i <= 19; i++) { temp = (rotate_left(A, 5) + ((B & C) | (~B & D)) + E + W[i] + 0x5A827999) & 0x0ffffffff; E = D; D = C; C = rotate_left(B, 30); B = A; A = temp; } for (i = 20; i <= 39; i++) { temp = (rotate_left(A, 5) + (B ^ C ^ D) + E + W[i] + 0x6ED9EBA1) & 0x0ffffffff; E = D; D = C; C = rotate_left(B, 30); B = A; A = temp; } for (i = 40; i <= 59; i++) { temp = (rotate_left(A, 5) + ((B & C) | (B & D) | (C & D)) + E + W[i] + 0x8F1BBCDC) & 0x0ffffffff; E = D; D = C; C = rotate_left(B, 30); B = A; A = temp; } for (i = 60; i <= 79; i++) { temp = (rotate_left(A, 5) + (B ^ C ^ D) + E + W[i] + 0xCA62C1D6) & 0x0ffffffff; E = D; D = C; C = rotate_left(B, 30); B = A; A = temp; } H0 = (H0 + A) & 0x0ffffffff; H1 = (H1 + B) & 0x0ffffffff; H2 = (H2 + C) & 0x0ffffffff; H3 = (H3 + D) & 0x0ffffffff; H4 = (H4 + E) & 0x0ffffffff; } temp = cvt_hex(H0) + cvt_hex(H1) + cvt_hex(H2) + cvt_hex(H3) + cvt_hex(H4); return temp.toLowerCase(); }