806 lines
21 KiB
JavaScript
806 lines
21 KiB
JavaScript
/*
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Copyright 2008-2018 Clipperz Srl
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This file is part of Clipperz, the online password manager.
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For further information about its features and functionalities please
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refer to http://www.clipperz.com.
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* Clipperz is free software: you can redistribute it and/or modify it
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under the terms of the GNU Affero General Public License as published
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by the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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* Clipperz is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the GNU Affero General Public License for more details.
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* You should have received a copy of the GNU Affero General Public
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License along with Clipperz. If not, see http://www.gnu.org/licenses/.
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*/
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"use strict";
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try { if (typeof(Clipperz.ByteArray) == 'undefined') { throw ""; }} catch (e) {
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throw "Clipperz.Crypto.PRNG depends on Clipperz.ByteArray!";
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}
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try { if (typeof(Clipperz.Crypto.SHA) == 'undefined') { throw ""; }} catch (e) {
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throw "Clipperz.Crypto.PRNG depends on Clipperz.Crypto.SHA!";
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}
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try { if (typeof(Clipperz.Crypto.AES) == 'undefined') { throw ""; }} catch (e) {
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throw "Clipperz.Crypto.PRNG depends on Clipperz.Crypto.AES!";
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}
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if (typeof(Clipperz.Crypto.PRNG) == 'undefined') { Clipperz.Crypto.PRNG = {}; }
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//#############################################################################
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Clipperz.Crypto.PRNG.EntropyAccumulator = function(args) {
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args = args || {};
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// MochiKit.Base.bindMethods(this);
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this._stack = new Clipperz.ByteArray();
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this._maxStackLengthBeforeHashing = args.maxStackLengthBeforeHashing || 256;
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return this;
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}
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Clipperz.Crypto.PRNG.EntropyAccumulator.prototype = MochiKit.Base.update(null, {
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'toString': function() {
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return "Clipperz.Crypto.PRNG.EntropyAccumulator";
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},
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//-------------------------------------------------------------------------
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'stack': function() {
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return this._stack;
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},
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'setStack': function(aValue) {
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this._stack = aValue;
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},
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'resetStack': function() {
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this.stack().reset();
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},
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'maxStackLengthBeforeHashing': function() {
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return this._maxStackLengthBeforeHashing;
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},
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//-------------------------------------------------------------------------
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'addRandomByte': function(aValue) {
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this.stack().appendByte(aValue);
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if (this.stack().length() > this.maxStackLengthBeforeHashing()) {
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this.setStack(Clipperz.Crypto.SHA.sha_d256(this.stack()));
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}
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},
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//-------------------------------------------------------------------------
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__syntaxFix__: "syntax fix"
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});
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//#############################################################################
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Clipperz.Crypto.PRNG.RandomnessSource = function(args) {
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args = args || {};
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MochiKit.Base.bindMethods(this);
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this._generator = args.generator || null;
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this._sourceId = args.sourceId || null;
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this._boostMode = args.boostMode || false;
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this._nextPoolIndex = 0;
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return this;
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}
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Clipperz.Crypto.PRNG.RandomnessSource.prototype = MochiKit.Base.update(null, {
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'generator': function() {
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return this._generator;
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},
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'setGenerator': function(aValue) {
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this._generator = aValue;
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},
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//-------------------------------------------------------------------------
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'boostMode': function() {
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return this._boostMode;
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},
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'setBoostMode': function(aValue) {
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this._boostMode = aValue;
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},
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//-------------------------------------------------------------------------
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'sourceId': function() {
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return this._sourceId;
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},
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'setSourceId': function(aValue) {
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this._sourceId = aValue;
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},
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//-------------------------------------------------------------------------
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'nextPoolIndex': function() {
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return this._nextPoolIndex;
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},
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'incrementNextPoolIndex': function() {
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this._nextPoolIndex = ((this._nextPoolIndex + 1) % this.generator().numberOfEntropyAccumulators());
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},
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//-------------------------------------------------------------------------
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'updateGeneratorWithValue': function(aRandomValue) {
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if (this.generator() != null) {
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this.generator().addRandomByte(this.sourceId(), this.nextPoolIndex(), aRandomValue);
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this.incrementNextPoolIndex();
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}
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},
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//-------------------------------------------------------------------------
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__syntaxFix__: "syntax fix"
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});
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//#############################################################################
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Clipperz.Crypto.PRNG.TimeRandomnessSource = function(args) {
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args = args || {};
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// MochiKit.Base.bindMethods(this);
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this._intervalTime = args.intervalTime || 1000;
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Clipperz.Crypto.PRNG.RandomnessSource.call(this, args);
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this.collectEntropy();
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return this;
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}
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Clipperz.Crypto.PRNG.TimeRandomnessSource.prototype = MochiKit.Base.update(new Clipperz.Crypto.PRNG.RandomnessSource, {
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'intervalTime': function() {
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return this._intervalTime;
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},
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//-------------------------------------------------------------------------
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'collectEntropy': function() {
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var now;
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var entropyByte;
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var intervalTime;
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now = new Date();
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entropyByte = (now.getTime() & 0xff);
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intervalTime = this.intervalTime();
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if (this.boostMode() == true) {
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intervalTime = intervalTime / 9;
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}
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this.updateGeneratorWithValue(entropyByte);
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setTimeout(this.collectEntropy, intervalTime);
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},
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//-------------------------------------------------------------------------
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'numberOfRandomBits': function() {
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return 5;
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},
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//-------------------------------------------------------------------------
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__syntaxFix__: "syntax fix"
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});
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//*****************************************************************************
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Clipperz.Crypto.PRNG.MouseRandomnessSource = function(args) {
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args = args || {};
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Clipperz.Crypto.PRNG.RandomnessSource.call(this, args);
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this._numberOfBitsToCollectAtEachEvent = 4;
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this._randomBitsCollector = 0;
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this._numberOfRandomBitsCollected = 0;
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MochiKit.Signal.connect(document, 'onmousemove', this, 'collectEntropy');
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return this;
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}
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Clipperz.Crypto.PRNG.MouseRandomnessSource.prototype = MochiKit.Base.update(new Clipperz.Crypto.PRNG.RandomnessSource, {
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//-------------------------------------------------------------------------
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'numberOfBitsToCollectAtEachEvent': function() {
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return this._numberOfBitsToCollectAtEachEvent;
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},
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//-------------------------------------------------------------------------
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'randomBitsCollector': function() {
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return this._randomBitsCollector;
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},
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'setRandomBitsCollector': function(aValue) {
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this._randomBitsCollector = aValue;
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},
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'appendRandomBitsToRandomBitsCollector': function(aValue) {
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var collectedBits;
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var numberOfRandomBitsCollected;
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numberOfRandomBitsCollected = this.numberOfRandomBitsCollected();
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collectedBits = this.randomBitsCollector() | (aValue << numberOfRandomBitsCollected);
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this.setRandomBitsCollector(collectedBits);
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numberOfRandomBitsCollected += this.numberOfBitsToCollectAtEachEvent();
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if (numberOfRandomBitsCollected == 8) {
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this.updateGeneratorWithValue(collectedBits);
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numberOfRandomBitsCollected = 0;
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this.setRandomBitsCollector(0);
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}
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this.setNumberOfRandomBitsCollected(numberOfRandomBitsCollected)
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},
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//-------------------------------------------------------------------------
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'numberOfRandomBitsCollected': function() {
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return this._numberOfRandomBitsCollected;
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},
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'setNumberOfRandomBitsCollected': function(aValue) {
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this._numberOfRandomBitsCollected = aValue;
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},
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//-------------------------------------------------------------------------
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'collectEntropy': function(anEvent) {
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var mouseLocation;
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var randomBit;
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var mask;
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mask = 0xffffffff >>> (32 - this.numberOfBitsToCollectAtEachEvent());
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mouseLocation = anEvent.mouse().client;
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randomBit = ((mouseLocation.x ^ mouseLocation.y) & mask);
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this.appendRandomBitsToRandomBitsCollector(randomBit)
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},
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//-------------------------------------------------------------------------
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'numberOfRandomBits': function() {
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return 1;
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},
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//-------------------------------------------------------------------------
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__syntaxFix__: "syntax fix"
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});
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//*****************************************************************************
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Clipperz.Crypto.PRNG.CryptoRandomRandomnessSource = function(args) {
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args = args || {};
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this._intervalTime = args.intervalTime || 1000;
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this._browserCrypto = args.browserCrypto;
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Clipperz.Crypto.PRNG.RandomnessSource.call(this, args);
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this.collectEntropy();
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return this;
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}
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Clipperz.Crypto.PRNG.CryptoRandomRandomnessSource.prototype = MochiKit.Base.update(new Clipperz.Crypto.PRNG.RandomnessSource, {
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'intervalTime': function() {
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return this._intervalTime;
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},
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'browserCrypto': function () {
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return this._browserCrypto;
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},
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//-------------------------------------------------------------------------
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'collectEntropy': function() {
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var bytesToCollect;
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if (this.boostMode() == true) {
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bytesToCollect = 64;
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} else {
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bytesToCollect = 8;
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}
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var randomValuesArray = new Uint8Array(bytesToCollect);
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this.browserCrypto().getRandomValues(randomValuesArray);
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for (var i = 0; i < randomValuesArray.length; i++) {
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this.updateGeneratorWithValue(randomValuesArray[i]);
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}
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setTimeout(this.collectEntropy, this.intervalTime());
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},
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//-------------------------------------------------------------------------
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__syntaxFix__: "syntax fix"
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});
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//#############################################################################
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Clipperz.Crypto.PRNG.Fortuna = function(args) {
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var i,c;
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args = args || {};
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this._key = args.seed || null;
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if (this._key == null) {
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this._counter = 0;
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this._key = new Clipperz.ByteArray();
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} else {
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this._counter = 1;
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}
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this._aesKey = null;
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this._firstPoolReseedLevel = args.firstPoolReseedLevel || 32 || 64;
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this._numberOfEntropyAccumulators = args.numberOfEntropyAccumulators || 32;
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this._accumulators = [];
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c = this.numberOfEntropyAccumulators();
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for (i=0; i<c; i++) {
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this._accumulators.push(new Clipperz.Crypto.PRNG.EntropyAccumulator());
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}
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this._randomnessSources = [];
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this._reseedCounter = 0;
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return this;
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}
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Clipperz.Crypto.PRNG.Fortuna.prototype = MochiKit.Base.update(null, {
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'toString': function() {
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return "Clipperz.Crypto.PRNG.Fortuna";
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},
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//-------------------------------------------------------------------------
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'key': function() {
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return this._key;
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},
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'setKey': function(aValue) {
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this._key = aValue;
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this._aesKey = null;
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},
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'aesKey': function() {
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if (this._aesKey == null) {
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this._aesKey = new Clipperz.Crypto.AES.Key({key:this.key()});
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}
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return this._aesKey;
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},
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'accumulators': function() {
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return this._accumulators;
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},
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'firstPoolReseedLevel': function() {
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return this._firstPoolReseedLevel;
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},
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//-------------------------------------------------------------------------
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'reseedCounter': function() {
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return this._reseedCounter;
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},
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'incrementReseedCounter': function() {
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this._reseedCounter = this._reseedCounter +1;
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},
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//-------------------------------------------------------------------------
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'reseed': function() {
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var newKeySeed;
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var reseedCounter;
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var reseedCounterMask;
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var i, c;
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newKeySeed = this.key();
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this.incrementReseedCounter();
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reseedCounter = this.reseedCounter();
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c = this.numberOfEntropyAccumulators();
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reseedCounterMask = 0xffffffff >>> (32 - c);
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for (i=0; i<c; i++) {
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if ((i == 0) || ((reseedCounter & (reseedCounterMask >>> (c - i))) == 0)) {
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newKeySeed.appendBlock(this.accumulators()[i].stack());
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this.accumulators()[i].resetStack();
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}
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}
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if (reseedCounter == 1) {
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c = this.randomnessSources().length;
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for (i=0; i<c; i++) {
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this.randomnessSources()[i].setBoostMode(false);
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}
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}
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this.setKey(Clipperz.Crypto.SHA.sha_d256(newKeySeed));
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if (reseedCounter == 1) {
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Clipperz.log("### PRNG.readyToGenerateRandomBytes");
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MochiKit.Signal.signal(this, 'readyToGenerateRandomBytes');
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}
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MochiKit.Signal.signal(this, 'reseeded');
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},
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//-------------------------------------------------------------------------
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'isReadyToGenerateRandomValues': function() {
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return this.reseedCounter() != 0;
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},
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//-------------------------------------------------------------------------
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'entropyLevel': function() {
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return this.accumulators()[0].stack().length() + (this.reseedCounter() * this.firstPoolReseedLevel());
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},
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//-------------------------------------------------------------------------
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'counter': function() {
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return this._counter;
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},
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'incrementCounter': function() {
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this._counter += 1;
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},
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'counterBlock': function() {
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var result;
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result = new Clipperz.ByteArray().appendWords(this.counter(), 0, 0, 0);
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return result;
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},
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//-------------------------------------------------------------------------
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'getRandomBlock': function() {
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var result;
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result = new Clipperz.ByteArray(Clipperz.Crypto.AES.encryptBlock(this.aesKey(), this.counterBlock().arrayValues()));
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this.incrementCounter();
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return result;
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},
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//-------------------------------------------------------------------------
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'getRandomBytes': function(aSize) {
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var result;
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if (this.isReadyToGenerateRandomValues()) {
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var i,c;
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var newKey;
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result = new Clipperz.ByteArray();
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c = Math.ceil(aSize / (128 / 8));
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for (i=0; i<c; i++) {
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result.appendBlock(this.getRandomBlock());
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}
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if (result.length() != aSize) {
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result = result.split(0, aSize);
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}
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newKey = this.getRandomBlock().appendBlock(this.getRandomBlock());
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this.setKey(newKey);
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} else {
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Clipperz.logWarning("Fortuna generator has not enough entropy, yet!");
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throw Clipperz.Crypto.PRNG.exception.NotEnoughEntropy;
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}
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return result;
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},
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//-------------------------------------------------------------------------
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'addRandomByte': function(aSourceId, aPoolId, aRandomValue) {
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var selectedAccumulator;
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selectedAccumulator = this.accumulators()[aPoolId];
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selectedAccumulator.addRandomByte(aRandomValue);
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if (aPoolId == 0) {
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MochiKit.Signal.signal(this, 'addedRandomByte')
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if (selectedAccumulator.stack().length() > this.firstPoolReseedLevel()) {
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this.reseed();
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}
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}
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},
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//-------------------------------------------------------------------------
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'numberOfEntropyAccumulators': function() {
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return this._numberOfEntropyAccumulators;
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},
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//-------------------------------------------------------------------------
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'randomnessSources': function() {
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return this._randomnessSources;
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},
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'addRandomnessSource': function(aRandomnessSource) {
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aRandomnessSource.setGenerator(this);
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aRandomnessSource.setSourceId(this.randomnessSources().length);
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this.randomnessSources().push(aRandomnessSource);
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if (this.isReadyToGenerateRandomValues() == false) {
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aRandomnessSource.setBoostMode(true);
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}
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},
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//-------------------------------------------------------------------------
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'deferredEntropyCollection': function(aValue) {
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var result;
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if (this.isReadyToGenerateRandomValues()) {
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result = aValue;
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} else {
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var deferredResult;
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deferredResult = new Clipperz.Async.Deferred("PRNG.deferredEntropyCollection");
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deferredResult.addCallback(MochiKit.Base.partial(MochiKit.Async.succeed, aValue));
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MochiKit.Signal.connect(this,
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'readyToGenerateRandomBytes',
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deferredResult,
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'callback');
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result = deferredResult;
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}
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return result;
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},
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//-------------------------------------------------------------------------
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'fastEntropyAccumulationForTestingPurpose': function() {
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while (! this.isReadyToGenerateRandomValues()) {
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this.addRandomByte(Math.floor(Math.random() * 32), Math.floor(Math.random() * 32), Math.floor(Math.random() * 256));
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}
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},
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//-------------------------------------------------------------------------
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/*
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'dump': function(appendToDoc) {
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var tbl;
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var i,c;
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tbl = document.createElement("table");
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tbl.border = 0;
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with (tbl.style) {
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border = "1px solid lightgrey";
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fontFamily = 'Helvetica, Arial, sans-serif';
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fontSize = '8pt';
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//borderCollapse = "collapse";
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|
}
|
|
var hdr = tbl.createTHead();
|
|
var hdrtr = hdr.insertRow(0);
|
|
// document.createElement("tr");
|
|
{
|
|
var ntd;
|
|
|
|
ntd = hdrtr.insertCell(0);
|
|
ntd.style.borderBottom = "1px solid lightgrey";
|
|
ntd.style.borderRight = "1px solid lightgrey";
|
|
ntd.appendChild(document.createTextNode("#"));
|
|
|
|
ntd = hdrtr.insertCell(1);
|
|
ntd.style.borderBottom = "1px solid lightgrey";
|
|
ntd.style.borderRight = "1px solid lightgrey";
|
|
ntd.appendChild(document.createTextNode("s"));
|
|
|
|
ntd = hdrtr.insertCell(2);
|
|
ntd.colSpan = this.firstPoolReseedLevel();
|
|
ntd.style.borderBottom = "1px solid lightgrey";
|
|
ntd.style.borderRight = "1px solid lightgrey";
|
|
ntd.appendChild(document.createTextNode("base values"));
|
|
|
|
ntd = hdrtr.insertCell(3);
|
|
ntd.colSpan = 20;
|
|
ntd.style.borderBottom = "1px solid lightgrey";
|
|
ntd.appendChild(document.createTextNode("extra values"));
|
|
|
|
}
|
|
|
|
c = this.accumulators().length;
|
|
for (i=0; i<c ; i++) {
|
|
var currentAccumulator;
|
|
var bdytr;
|
|
var bdytd;
|
|
var ii, cc;
|
|
|
|
currentAccumulator = this.accumulators()[i]
|
|
|
|
bdytr = tbl.insertRow(true);
|
|
|
|
bdytd = bdytr.insertCell(0);
|
|
bdytd.style.borderRight = "1px solid lightgrey";
|
|
bdytd.style.color = "lightgrey";
|
|
bdytd.appendChild(document.createTextNode("" + i));
|
|
|
|
bdytd = bdytr.insertCell(1);
|
|
bdytd.style.borderRight = "1px solid lightgrey";
|
|
bdytd.style.color = "gray";
|
|
bdytd.appendChild(document.createTextNode("" + currentAccumulator.stack().length()));
|
|
|
|
|
|
cc = Math.max(currentAccumulator.stack().length(), this.firstPoolReseedLevel());
|
|
for (ii=0; ii<cc; ii++) {
|
|
var cellText;
|
|
|
|
bdytd = bdytr.insertCell(ii + 2);
|
|
|
|
if (ii < currentAccumulator.stack().length()) {
|
|
cellText = Clipperz.ByteArray.byteToHex(currentAccumulator.stack().byteAtIndex(ii));
|
|
} else {
|
|
cellText = "_";
|
|
}
|
|
|
|
if (ii == (this.firstPoolReseedLevel() - 1)) {
|
|
bdytd.style.borderRight = "1px solid lightgrey";
|
|
}
|
|
|
|
bdytd.appendChild(document.createTextNode(cellText));
|
|
}
|
|
|
|
}
|
|
|
|
|
|
if (appendToDoc) {
|
|
var ne = document.createElement("div");
|
|
ne.id = "entropyGeneratorStatus";
|
|
with (ne.style) {
|
|
fontFamily = "Courier New, monospace";
|
|
fontSize = "12px";
|
|
lineHeight = "16px";
|
|
borderTop = "1px solid black";
|
|
padding = "10px";
|
|
}
|
|
if (document.getElementById(ne.id)) {
|
|
MochiKit.DOM.swapDOM(ne.id, ne);
|
|
} else {
|
|
document.body.appendChild(ne);
|
|
}
|
|
ne.appendChild(tbl);
|
|
}
|
|
|
|
return tbl;
|
|
},
|
|
*/
|
|
//-----------------------------------------------------------------------------
|
|
__syntaxFix__: "syntax fix"
|
|
});
|
|
|
|
//#############################################################################
|
|
|
|
Clipperz.Crypto.PRNG.Random = function(args) {
|
|
args = args || {};
|
|
// MochiKit.Base.bindMethods(this);
|
|
|
|
return this;
|
|
}
|
|
|
|
Clipperz.Crypto.PRNG.Random.prototype = MochiKit.Base.update(null, {
|
|
|
|
'toString': function() {
|
|
return "Clipperz.Crypto.PRNG.Random";
|
|
},
|
|
|
|
//-------------------------------------------------------------------------
|
|
|
|
'getRandomBytes': function(aSize) {
|
|
//Clipperz.Profile.start("Clipperz.Crypto.PRNG.Random.getRandomBytes");
|
|
var result;
|
|
var i,c;
|
|
|
|
result = new Clipperz.ByteArray()
|
|
c = aSize || 1;
|
|
for (i=0; i<c; i++) {
|
|
result.appendByte((Math.random()*255) & 0xff);
|
|
}
|
|
|
|
//Clipperz.Profile.stop("Clipperz.Crypto.PRNG.Random.getRandomBytes");
|
|
return result;
|
|
},
|
|
|
|
//-------------------------------------------------------------------------
|
|
__syntaxFix__: "syntax fix"
|
|
});
|
|
|
|
//#############################################################################
|
|
|
|
var _clipperz_crypt_prng_defaultPRNG = null;
|
|
|
|
Clipperz.Crypto.PRNG.defaultRandomGenerator = function() {
|
|
if (_clipperz_crypt_prng_defaultPRNG == null) {
|
|
_clipperz_crypt_prng_defaultPRNG = new Clipperz.Crypto.PRNG.Fortuna();
|
|
|
|
//.............................................................
|
|
//
|
|
// TimeRandomnessSource
|
|
//
|
|
//.............................................................
|
|
{
|
|
var newRandomnessSource;
|
|
|
|
newRandomnessSource = new Clipperz.Crypto.PRNG.TimeRandomnessSource({intervalTime:111});
|
|
_clipperz_crypt_prng_defaultPRNG.addRandomnessSource(newRandomnessSource);
|
|
}
|
|
|
|
//.............................................................
|
|
//
|
|
// MouseRandomnessSource
|
|
//
|
|
//.............................................................
|
|
{
|
|
var newRandomnessSource;
|
|
|
|
newRandomnessSource = new Clipperz.Crypto.PRNG.MouseRandomnessSource();
|
|
_clipperz_crypt_prng_defaultPRNG.addRandomnessSource(newRandomnessSource);
|
|
}
|
|
|
|
//.............................................................
|
|
//
|
|
// CryptoRandomRandomnessSource
|
|
//
|
|
//.............................................................
|
|
{
|
|
var newRandomnessSource;
|
|
var browserCrypto;
|
|
|
|
if (window.crypto && window.crypto.getRandomValues) {
|
|
browserCrypto = window.crypto;
|
|
} else if (window.msCrypto && window.msCrypto.getRandomValues) {
|
|
browserCrypto = window.msCrypto;
|
|
} else {
|
|
browserCrypto = null;
|
|
}
|
|
|
|
if (browserCrypto != null) {
|
|
newRandomnessSource = new Clipperz.Crypto.PRNG.CryptoRandomRandomnessSource({'browserCrypto':browserCrypto});
|
|
_clipperz_crypt_prng_defaultPRNG.addRandomnessSource(newRandomnessSource);
|
|
}
|
|
}
|
|
}
|
|
|
|
return _clipperz_crypt_prng_defaultPRNG;
|
|
};
|
|
|
|
//#############################################################################
|
|
|
|
Clipperz.Crypto.PRNG.exception = {
|
|
NotEnoughEntropy: new MochiKit.Base.NamedError("Clipperz.Crypto.PRNG.exception.NotEnoughEntropy")
|
|
};
|
|
|
|
|
|
MochiKit.DOM.addLoadEvent(Clipperz.Crypto.PRNG.defaultRandomGenerator);
|