Diffstat (limited to 'frontend/beta/js/Clipperz/Crypto/PRNG.js') (more/less context) (ignore whitespace changes)
-rw-r--r-- | frontend/beta/js/Clipperz/Crypto/PRNG.js | 22 |
1 files changed, 10 insertions, 12 deletions
diff --git a/frontend/beta/js/Clipperz/Crypto/PRNG.js b/frontend/beta/js/Clipperz/Crypto/PRNG.js index 39d0045..b5c3f8a 100644 --- a/frontend/beta/js/Clipperz/Crypto/PRNG.js +++ b/frontend/beta/js/Clipperz/Crypto/PRNG.js @@ -1,534 +1,532 @@ /* -Copyright 2008-2011 Clipperz Srl +Copyright 2008-2013 Clipperz Srl -This file is part of Clipperz Community Edition. -Clipperz Community Edition is an online password manager. +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 Community Edition 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 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 Community Edition 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. +* 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 Community Edition. If not, see - <http://www.gnu.org/licenses/>. + 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!"; } try { if (typeof(Clipperz.Crypto.SHA) == 'undefined') { throw ""; }} catch (e) { throw "Clipperz.Crypto.PRNG depends on Clipperz.Crypto.SHA!"; } try { if (typeof(Clipperz.Crypto.AES) == 'undefined') { throw ""; }} catch (e) { throw "Clipperz.Crypto.PRNG depends on Clipperz.Crypto.AES!"; } if (typeof(Clipperz.Crypto.PRNG) == 'undefined') { Clipperz.Crypto.PRNG = {}; } //############################################################################# Clipperz.Crypto.PRNG.EntropyAccumulator = function(args) { args = args || {}; // MochiKit.Base.bindMethods(this); this._stack = new Clipperz.ByteArray(); this._maxStackLengthBeforeHashing = args.maxStackLengthBeforeHashing || 256; return this; } Clipperz.Crypto.PRNG.EntropyAccumulator.prototype = MochiKit.Base.update(null, { 'toString': function() { return "Clipperz.Crypto.PRNG.EntropyAccumulator"; }, //------------------------------------------------------------------------- 'stack': function() { return this._stack; }, 'setStack': function(aValue) { this._stack = aValue; }, 'resetStack': function() { this.stack().reset(); }, 'maxStackLengthBeforeHashing': function() { return this._maxStackLengthBeforeHashing; }, //------------------------------------------------------------------------- 'addRandomByte': function(aValue) { this.stack().appendByte(aValue); if (this.stack().length() > this.maxStackLengthBeforeHashing()) { this.setStack(Clipperz.Crypto.SHA.sha_d256(this.stack())); } }, //------------------------------------------------------------------------- __syntaxFix__: "syntax fix" }); //############################################################################# Clipperz.Crypto.PRNG.RandomnessSource = function(args) { args = args || {}; MochiKit.Base.bindMethods(this); this._generator = args.generator || null; this._sourceId = args.sourceId || null; this._boostMode = args.boostMode || false; this._nextPoolIndex = 0; return this; } Clipperz.Crypto.PRNG.RandomnessSource.prototype = MochiKit.Base.update(null, { 'generator': function() { return this._generator; }, 'setGenerator': function(aValue) { this._generator = aValue; }, //------------------------------------------------------------------------- 'boostMode': function() { return this._boostMode; }, 'setBoostMode': function(aValue) { this._boostMode = aValue; }, //------------------------------------------------------------------------- 'sourceId': function() { return this._sourceId; }, 'setSourceId': function(aValue) { this._sourceId = aValue; }, //------------------------------------------------------------------------- 'nextPoolIndex': function() { return this._nextPoolIndex; }, 'incrementNextPoolIndex': function() { this._nextPoolIndex = ((this._nextPoolIndex + 1) % this.generator().numberOfEntropyAccumulators()); }, //------------------------------------------------------------------------- 'updateGeneratorWithValue': function(aRandomValue) { if (this.generator() != null) { this.generator().addRandomByte(this.sourceId(), this.nextPoolIndex(), aRandomValue); this.incrementNextPoolIndex(); } }, //------------------------------------------------------------------------- __syntaxFix__: "syntax fix" }); //############################################################################# Clipperz.Crypto.PRNG.TimeRandomnessSource = function(args) { args = args || {}; // MochiKit.Base.bindMethods(this); this._intervalTime = args.intervalTime || 1000; Clipperz.Crypto.PRNG.RandomnessSource.call(this, args); this.collectEntropy(); return this; } Clipperz.Crypto.PRNG.TimeRandomnessSource.prototype = MochiKit.Base.update(new Clipperz.Crypto.PRNG.RandomnessSource, { 'intervalTime': function() { return this._intervalTime; }, //------------------------------------------------------------------------- 'collectEntropy': function() { var now; var entropyByte; var intervalTime; now = new Date(); entropyByte = (now.getTime() & 0xff); intervalTime = this.intervalTime(); if (this.boostMode() == true) { intervalTime = intervalTime / 9; } this.updateGeneratorWithValue(entropyByte); setTimeout(this.collectEntropy, intervalTime); }, //------------------------------------------------------------------------- 'numberOfRandomBits': function() { return 5; }, //------------------------------------------------------------------------- 'pollingFrequency': function() { return 10; }, //------------------------------------------------------------------------- __syntaxFix__: "syntax fix" }); //***************************************************************************** Clipperz.Crypto.PRNG.MouseRandomnessSource = function(args) { args = args || {}; Clipperz.Crypto.PRNG.RandomnessSource.call(this, args); this._numberOfBitsToCollectAtEachEvent = 4; this._randomBitsCollector = 0; this._numberOfRandomBitsCollected = 0; MochiKit.Signal.connect(document, 'onmousemove', this, 'collectEntropy'); return this; } Clipperz.Crypto.PRNG.MouseRandomnessSource.prototype = MochiKit.Base.update(new Clipperz.Crypto.PRNG.RandomnessSource, { //------------------------------------------------------------------------- 'numberOfBitsToCollectAtEachEvent': function() { return this._numberOfBitsToCollectAtEachEvent; }, //------------------------------------------------------------------------- 'randomBitsCollector': function() { return this._randomBitsCollector; }, 'setRandomBitsCollector': function(aValue) { this._randomBitsCollector = aValue; }, 'appendRandomBitsToRandomBitsCollector': function(aValue) { var collectedBits; var numberOfRandomBitsCollected; numberOfRandomBitsCollected = this.numberOfRandomBitsCollected(); collectetBits = this.randomBitsCollector() | (aValue << numberOfRandomBitsCollected); this.setRandomBitsCollector(collectetBits); numberOfRandomBitsCollected += this.numberOfBitsToCollectAtEachEvent(); if (numberOfRandomBitsCollected == 8) { this.updateGeneratorWithValue(collectetBits); numberOfRandomBitsCollected = 0; this.setRandomBitsCollector(0); } this.setNumberOfRandomBitsCollected(numberOfRandomBitsCollected) }, //------------------------------------------------------------------------- 'numberOfRandomBitsCollected': function() { return this._numberOfRandomBitsCollected; }, 'setNumberOfRandomBitsCollected': function(aValue) { this._numberOfRandomBitsCollected = aValue; }, //------------------------------------------------------------------------- 'collectEntropy': function(anEvent) { var mouseLocation; var randomBit; var mask; mask = 0xffffffff >>> (32 - this.numberOfBitsToCollectAtEachEvent()); mouseLocation = anEvent.mouse().client; randomBit = ((mouseLocation.x ^ mouseLocation.y) & mask); this.appendRandomBitsToRandomBitsCollector(randomBit) }, //------------------------------------------------------------------------- 'numberOfRandomBits': function() { return 1; }, //------------------------------------------------------------------------- 'pollingFrequency': function() { return 10; }, //------------------------------------------------------------------------- __syntaxFix__: "syntax fix" }); //***************************************************************************** Clipperz.Crypto.PRNG.KeyboardRandomnessSource = function(args) { args = args || {}; Clipperz.Crypto.PRNG.RandomnessSource.call(this, args); this._randomBitsCollector = 0; this._numberOfRandomBitsCollected = 0; MochiKit.Signal.connect(document, 'onkeypress', this, 'collectEntropy'); return this; } Clipperz.Crypto.PRNG.KeyboardRandomnessSource.prototype = MochiKit.Base.update(new Clipperz.Crypto.PRNG.RandomnessSource, { //------------------------------------------------------------------------- 'randomBitsCollector': function() { return this._randomBitsCollector; }, 'setRandomBitsCollector': function(aValue) { this._randomBitsCollector = aValue; }, 'appendRandomBitToRandomBitsCollector': function(aValue) { var collectedBits; var numberOfRandomBitsCollected; numberOfRandomBitsCollected = this.numberOfRandomBitsCollected(); collectetBits = this.randomBitsCollector() | (aValue << numberOfRandomBitsCollected); this.setRandomBitsCollector(collectetBits); numberOfRandomBitsCollected ++; if (numberOfRandomBitsCollected == 8) { this.updateGeneratorWithValue(collectetBits); numberOfRandomBitsCollected = 0; this.setRandomBitsCollector(0); } this.setNumberOfRandomBitsCollected(numberOfRandomBitsCollected) }, //------------------------------------------------------------------------- 'numberOfRandomBitsCollected': function() { return this._numberOfRandomBitsCollected; }, 'setNumberOfRandomBitsCollected': function(aValue) { this._numberOfRandomBitsCollected = aValue; }, //------------------------------------------------------------------------- 'collectEntropy': function(anEvent) { /* var mouseLocation; var randomBit; mouseLocation = anEvent.mouse().client; randomBit = ((mouseLocation.x ^ mouseLocation.y) & 0x1); this.appendRandomBitToRandomBitsCollector(randomBit); */ }, //------------------------------------------------------------------------- 'numberOfRandomBits': function() { return 1; }, //------------------------------------------------------------------------- 'pollingFrequency': function() { return 10; }, //------------------------------------------------------------------------- __syntaxFix__: "syntax fix" }); //############################################################################# Clipperz.Crypto.PRNG.Fortuna = function(args) { var i,c; args = args || {}; this._key = args.seed || null; if (this._key == null) { this._counter = 0; this._key = new Clipperz.ByteArray(); } else { this._counter = 1; } this._aesKey = null; this._firstPoolReseedLevel = args.firstPoolReseedLevel || 32 || 64; this._numberOfEntropyAccumulators = args.numberOfEntropyAccumulators || 32; this._accumulators = []; c = this.numberOfEntropyAccumulators(); for (i=0; i<c; i++) { this._accumulators.push(new Clipperz.Crypto.PRNG.EntropyAccumulator()); } this._randomnessSources = []; this._reseedCounter = 0; return this; } Clipperz.Crypto.PRNG.Fortuna.prototype = MochiKit.Base.update(null, { 'toString': function() { return "Clipperz.Crypto.PRNG.Fortuna"; }, //------------------------------------------------------------------------- 'key': function() { return this._key; }, 'setKey': function(aValue) { this._key = aValue; this._aesKey = null; }, 'aesKey': function() { if (this._aesKey == null) { this._aesKey = new Clipperz.Crypto.AES.Key({key:this.key()}); } return this._aesKey; }, 'accumulators': function() { return this._accumulators; }, 'firstPoolReseedLevel': function() { return this._firstPoolReseedLevel; }, //------------------------------------------------------------------------- 'reseedCounter': function() { return this._reseedCounter; }, 'incrementReseedCounter': function() { this._reseedCounter = this._reseedCounter +1; }, //------------------------------------------------------------------------- 'reseed': function() { var newKeySeed; var reseedCounter; var reseedCounterMask; var i, c; newKeySeed = this.key(); this.incrementReseedCounter(); reseedCounter = this.reseedCounter(); c = this.numberOfEntropyAccumulators(); reseedCounterMask = 0xffffffff >>> (32 - c); for (i=0; i<c; i++) { if ((i == 0) || ((reseedCounter & (reseedCounterMask >>> (c - i))) == 0)) { newKeySeed.appendBlock(this.accumulators()[i].stack()); this.accumulators()[i].resetStack(); } } if (reseedCounter == 1) { c = this.randomnessSources().length; for (i=0; i<c; i++) { this.randomnessSources()[i].setBoostMode(false); } } this.setKey(Clipperz.Crypto.SHA.sha_d256(newKeySeed)); if (reseedCounter == 1) { MochiKit.Logging.logDebug("### PRNG.readyToGenerateRandomBytes"); MochiKit.Signal.signal(this, 'readyToGenerateRandomBytes'); } MochiKit.Signal.signal(this, 'reseeded'); }, //------------------------------------------------------------------------- 'isReadyToGenerateRandomValues': function() { return this.reseedCounter() != 0; }, //------------------------------------------------------------------------- 'entropyLevel': function() { return this.accumulators()[0].stack().length() + (this.reseedCounter() * this.firstPoolReseedLevel()); }, //------------------------------------------------------------------------- 'counter': function() { return this._counter; }, 'incrementCounter': function() { this._counter += 1; }, 'counterBlock': function() { var result; result = new Clipperz.ByteArray().appendWords(this.counter(), 0, 0, 0); return result; }, //------------------------------------------------------------------------- 'getRandomBlock': function() { var result; result = new Clipperz.ByteArray(Clipperz.Crypto.AES.encryptBlock(this.aesKey(), this.counterBlock().arrayValues())); this.incrementCounter(); |