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+/*
+
+Copyright 2008-2013 Clipperz Srl
+
+This file is part of Clipperz, the online password manager.
+For further information about its features and functionalities please
+refer to http://www.clipperz.com.
+
+* Clipperz is free software: you can redistribute it and/or modify it
+ under the terms of the GNU Affero General Public License as published
+ by the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+* Clipperz is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ See the GNU Affero General Public License for more details.
+
+* You should have received a copy of the GNU Affero General Public
+ License along with Clipperz. If not, see http://www.gnu.org/licenses/.
+
+*/
+
+try { if (typeof(Clipperz.ByteArray) == 'undefined') { throw ""; }} catch (e) {
+ throw "Clipperz.Crypto.PRNG depends on Clipperz.ByteArray!";
+}
+
+if (typeof(Clipperz.Crypto) == 'undefined') { Clipperz.Crypto = {}; }
+if (typeof(Clipperz.Crypto.SHA) == 'undefined') { Clipperz.Crypto.SHA = {}; }
+
+Clipperz.Crypto.SHA.VERSION = "0.3";
+Clipperz.Crypto.SHA.NAME = "Clipperz.Crypto.SHA";
+
+MochiKit.Base.update(Clipperz.Crypto.SHA, {
+
+ '__repr__': function () {
+ return "[" + this.NAME + " " + this.VERSION + "]";
+ },
+
+ 'toString': function () {
+ return this.__repr__();
+ },
+
+ //-----------------------------------------------------------------------------
+
+ 'rotateRight': function(aValue, aNumberOfBits) {
+//Clipperz.Profile.start("Clipperz.Crypto.SHA.rotateRight");
+ var result;
+
+ result = (aValue >>> aNumberOfBits) | (aValue << (32 - aNumberOfBits));
+
+//Clipperz.Profile.stop("Clipperz.Crypto.SHA.rotateRight");
+ return result;
+ },
+
+ 'shiftRight': function(aValue, aNumberOfBits) {
+//Clipperz.Profile.start("Clipperz.Crypto.SHA.shiftRight");
+ var result;
+
+ result = aValue >>> aNumberOfBits;
+
+//Clipperz.Profile.stop("Clipperz.Crypto.SHA.shiftRight");
+ return result;
+ },
+
+ //-----------------------------------------------------------------------------
+
+ 'safeAdd': function() {
+//Clipperz.Profile.start("Clipperz.Crypto.SHA.safeAdd");
+ var result;
+ var i, c;
+
+ result = arguments[0];
+ c = arguments.length;
+ for (i=1; i<c; i++) {
+ var lowerBytesSum;
+
+ lowerBytesSum = (result & 0xffff) + (arguments[i] & 0xffff);
+ result = (((result >> 16) + (arguments[i] >> 16) + (lowerBytesSum >> 16)) << 16) | (lowerBytesSum & 0xffff);
+ }
+
+//Clipperz.Profile.stop("Clipperz.Crypto.SHA.safeAdd");
+ return result;
+ },
+
+ //-----------------------------------------------------------------------------
+
+ 'sha256_array': function(aValue) {
+//Clipperz.Profile.start("Clipperz.Crypto.SHA.sha256_array");
+ var result;
+ var message;
+ var h0, h1, h2, h3, h4, h5, h6, h7;
+ var k;
+ var messageLength;
+ var messageLengthInBits;
+ var _i, _c;
+ var charBits;
+ var rotateRight;
+ var shiftRight;
+ var safeAdd;
+ var bytesPerBlock;
+ var currentMessageIndex;
+
+ bytesPerBlock = 512/8;
+ rotateRight = Clipperz.Crypto.SHA.rotateRight;
+ shiftRight = Clipperz.Crypto.SHA.shiftRight;
+ safeAdd = Clipperz.Crypto.SHA.safeAdd;
+
+ charBits = 8;
+
+ h0 = 0x6a09e667;
+ h1 = 0xbb67ae85;
+ h2 = 0x3c6ef372;
+ h3 = 0xa54ff53a;
+ h4 = 0x510e527f;
+ h5 = 0x9b05688c;
+ h6 = 0x1f83d9ab;
+ h7 = 0x5be0cd19;
+
+ k = [ 0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5, 0x3956c25b, 0x59f111f1, 0x923f82a4, 0xab1c5ed5,
+ 0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3, 0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174,
+ 0xe49b69c1, 0xefbe4786, 0x0fc19dc6, 0x240ca1cc, 0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da,
+ 0x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7, 0xc6e00bf3, 0xd5a79147, 0x06ca6351, 0x14292967,
+ 0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13, 0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85,
+ 0xa2bfe8a1, 0xa81a664b, 0xc24b8b70, 0xc76c51a3, 0xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070,
+ 0x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5, 0x391c0cb3, 0x4ed8aa4a, 0x5b9cca4f, 0x682e6ff3,
+ 0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208, 0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2];
+
+ message = aValue;
+ messageLength = message.length;
+
+ //Pre-processing:
+ message.push(0x80); // append a single "1" bit to message
+
+ _c = (512 - (((messageLength + 1) * charBits) % 512) - 64) / charBits;
+ if (_c < 0) {
+ _c = _c + (512 / charBits);
+ }
+
+ for (_i=0; _i<_c; _i++) {
+ message.push(0x00); // append "0" bits until message length ≡ 448 ≡ -64 (mod 512)
+ }
+
+ messageLengthInBits = messageLength * charBits;
+ message.push(0x00); // the 4 most high byte are alway 0 as message length is represented with a 32bit value;
+ message.push(0x00);
+ message.push(0x00);
+ message.push(0x00);
+ message.push((messageLengthInBits >> 24) & 0xff);
+ message.push((messageLengthInBits >> 16) & 0xff);
+ message.push((messageLengthInBits >> 8) & 0xff);
+ message.push( messageLengthInBits & 0xff);
+
+ currentMessageIndex = 0;
+ while(currentMessageIndex < message.length) {
+ var w;
+ var a, b, c, d, e, f, g, h;
+
+ w = Array(64);
+
+ _c = 16;
+ for (_i=0; _i<_c; _i++) {
+ var _j;
+
+ _j = currentMessageIndex + _i*4;
+ w[_i] = (message[_j] << 24) | (message[_j + 1] << 16) | (message[_j + 2] << 8) | (message[_j + 3] << 0);
+ }
+
+ _c = 64;
+ for (_i=16; _i<_c; _i++) {
+ var s0, s1;
+
+ s0 = (rotateRight(w[_i-15], 7)) ^ (rotateRight(w[_i-15], 18)) ^ (shiftRight(w[_i-15], 3));
+ s1 = (rotateRight(w[_i-2], 17)) ^ (rotateRight(w[_i-2], 19)) ^ (shiftRight(w[_i-2], 10));
+ w[_i] = safeAdd(w[_i-16], s0, w[_i-7], s1);
+ }
+
+ a=h0; b=h1; c=h2; d=h3; e=h4; f=h5; g=h6; h=h7;
+
+ _c = 64;
+ for (_i=0; _i<_c; _i++) {
+ var s0, s1, ch, maj, t1, t2;
+
+ s0 = (rotateRight(a, 2)) ^ (rotateRight(a, 13)) ^ (rotateRight(a, 22));
+ maj = (a & b) ^ (a & c) ^ (b & c);
+ t2 = safeAdd(s0, maj);
+ s1 = (rotateRight(e, 6)) ^ (rotateRight(e, 11)) ^ (rotateRight(e, 25));
+ ch = (e & f) ^ ((~e) & g);
+ t1 = safeAdd(h, s1, ch, k[_i], w[_i]);
+
+ h = g;
+ g = f;
+ f = e;
+ e = safeAdd(d, t1);
+ d = c;
+ c = b;
+ b = a;
+ a = safeAdd(t1, t2);
+ }
+
+ h0 = safeAdd(h0, a);
+ h1 = safeAdd(h1, b);
+ h2 = safeAdd(h2, c);
+ h3 = safeAdd(h3, d);
+ h4 = safeAdd(h4, e);
+ h5 = safeAdd(h5, f);
+ h6 = safeAdd(h6, g);
+ h7 = safeAdd(h7, h);
+
+ currentMessageIndex += bytesPerBlock;
+ }
+
+ result = new Array(256/8);
+ result[0] = (h0 >> 24) & 0xff;
+ result[1] = (h0 >> 16) & 0xff;
+ result[2] = (h0 >> 8) & 0xff;
+ result[3] = h0 & 0xff;
+
+ result[4] = (h1 >> 24) & 0xff;
+ result[5] = (h1 >> 16) & 0xff;
+ result[6] = (h1 >> 8) & 0xff;
+ result[7] = h1 & 0xff;
+
+ result[8] = (h2 >> 24) & 0xff;
+ result[9] = (h2 >> 16) & 0xff;
+ result[10] = (h2 >> 8) & 0xff;
+ result[11] = h2 & 0xff;
+
+ result[12] = (h3 >> 24) & 0xff;
+ result[13] = (h3 >> 16) & 0xff;
+ result[14] = (h3 >> 8) & 0xff;
+ result[15] = h3 & 0xff;
+
+ result[16] = (h4 >> 24) & 0xff;
+ result[17] = (h4 >> 16) & 0xff;
+ result[18] = (h4 >> 8) & 0xff;
+ result[19] = h4 & 0xff;
+
+ result[20] = (h5 >> 24) & 0xff;
+ result[21] = (h5 >> 16) & 0xff;
+ result[22] = (h5 >> 8) & 0xff;
+ result[23] = h5 & 0xff;
+
+ result[24] = (h6 >> 24) & 0xff;
+ result[25] = (h6 >> 16) & 0xff;
+ result[26] = (h6 >> 8) & 0xff;
+ result[27] = h6 & 0xff;
+
+ result[28] = (h7 >> 24) & 0xff;
+ result[29] = (h7 >> 16) & 0xff;
+ result[30] = (h7 >> 8) & 0xff;
+ result[31] = h7 & 0xff;
+
+//Clipperz.Profile.stop("Clipperz.Crypto.SHA.sha256_array");
+ return result;
+ },
+
+ //-----------------------------------------------------------------------------
+
+ 'sha256': function(aValue) {
+//Clipperz.Profile.start("Clipperz.Crypto.SHA.sha256");
+ var result;
+ var resultArray;
+ var valueArray;
+
+ valueArray = aValue.arrayValues();
+ resultArray = Clipperz.Crypto.SHA.sha256_array(valueArray);
+
+ result = new Clipperz.ByteArray(resultArray);
+
+//Clipperz.Profile.stop("Clipperz.Crypto.SHA.sha256");
+ return result;
+ },
+
+ //-----------------------------------------------------------------------------
+
+ 'sha_d256': function(aValue) {
+//Clipperz.Profile.start("Clipperz.Crypto.SHA.sha_d256");
+ var result;
+ var resultArray;
+ var valueArray;
+
+ valueArray = aValue.arrayValues();
+ resultArray = Clipperz.Crypto.SHA.sha256_array(valueArray);
+ resultArray = Clipperz.Crypto.SHA.sha256_array(resultArray);
+
+ result = new Clipperz.ByteArray(resultArray);
+
+//Clipperz.Profile.stop("Clipperz.Crypto.SHA.sha256");
+ return result;
+ },
+
+ //-----------------------------------------------------------------------------
+ __syntaxFix__: "syntax fix"
+
+});