Diffstat (limited to 'frontend/delta/js/Clipperz/Crypto/PRNG.js') (more/less context) (ignore whitespace changes)
| -rw-r--r-- | frontend/delta/js/Clipperz/Crypto/PRNG.js | 128 |
1 files changed, 46 insertions, 82 deletions
diff --git a/frontend/delta/js/Clipperz/Crypto/PRNG.js b/frontend/delta/js/Clipperz/Crypto/PRNG.js index c539f06..80d972f 100644 --- a/frontend/delta/js/Clipperz/Crypto/PRNG.js +++ b/frontend/delta/js/Clipperz/Crypto/PRNG.js @@ -21,6 +21,8 @@ refer to http://www.clipperz.com. */ +"use strict"; + try { if (typeof(Clipperz.ByteArray) == 'undefined') { throw ""; }} catch (e) { throw "Clipperz.Crypto.PRNG depends on Clipperz.ByteArray!"; } @@ -197,12 +199,6 @@ Clipperz.Crypto.PRNG.TimeRandomnessSource.prototype = MochiKit.Base.update(new C }, //------------------------------------------------------------------------- - - 'pollingFrequency': function() { - return 10; - }, - - //------------------------------------------------------------------------- __syntaxFix__: "syntax fix" }); @@ -245,12 +241,12 @@ Clipperz.Crypto.PRNG.MouseRandomnessSource.prototype = MochiKit.Base.update(new var numberOfRandomBitsCollected; numberOfRandomBitsCollected = this.numberOfRandomBitsCollected(); - collectetBits = this.randomBitsCollector() | (aValue << numberOfRandomBitsCollected); - this.setRandomBitsCollector(collectetBits); + collectedBits = this.randomBitsCollector() | (aValue << numberOfRandomBitsCollected); + this.setRandomBitsCollector(collectedBits); numberOfRandomBitsCollected += this.numberOfBitsToCollectAtEachEvent(); if (numberOfRandomBitsCollected == 8) { - this.updateGeneratorWithValue(collectetBits); + this.updateGeneratorWithValue(collectedBits); numberOfRandomBitsCollected = 0; this.setRandomBitsCollector(0); } @@ -289,96 +285,54 @@ Clipperz.Crypto.PRNG.MouseRandomnessSource.prototype = MochiKit.Base.update(new }, //------------------------------------------------------------------------- - - 'pollingFrequency': function() { - return 10; - }, - - //------------------------------------------------------------------------- __syntaxFix__: "syntax fix" }); //***************************************************************************** -Clipperz.Crypto.PRNG.KeyboardRandomnessSource = function(args) { +Clipperz.Crypto.PRNG.CryptoRandomRandomnessSource = function(args) { args = args || {}; - Clipperz.Crypto.PRNG.RandomnessSource.call(this, args); - this._randomBitsCollector = 0; - this._numberOfRandomBitsCollected = 0; + this._intervalTime = args.intervalTime || 1000; + this._browserCrypto = args.browserCrypto; - MochiKit.Signal.connect(document, 'onkeypress', this, 'collectEntropy'); + Clipperz.Crypto.PRNG.RandomnessSource.call(this, args); + this.collectEntropy(); return this; } -Clipperz.Crypto.PRNG.KeyboardRandomnessSource.prototype = MochiKit.Base.update(new Clipperz.Crypto.PRNG.RandomnessSource, { +Clipperz.Crypto.PRNG.CryptoRandomRandomnessSource.prototype = MochiKit.Base.update(new Clipperz.Crypto.PRNG.RandomnessSource, { - //------------------------------------------------------------------------- - - 'randomBitsCollector': function() { - return this._randomBitsCollector; - }, - - 'setRandomBitsCollector': function(aValue) { - this._randomBitsCollector = aValue; + 'intervalTime': function() { + return this._intervalTime; }, - - '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) + + 'browserCrypto': function () { + return this._browserCrypto; }, //------------------------------------------------------------------------- - 'numberOfRandomBitsCollected': function() { - return this._numberOfRandomBitsCollected; - }, - - 'setNumberOfRandomBitsCollected': function(aValue) { - this._numberOfRandomBitsCollected = aValue; - }, + 'collectEntropy': function() { + var bytesToCollect; - //------------------------------------------------------------------------- + if (this.boostMode() == true) { + bytesToCollect = 64; + } else { + bytesToCollect = 8; + } - 'collectEntropy': function(anEvent) { -/* - var mouseLocation; - var randomBit; - - mouseLocation = anEvent.mouse().client; - - randomBit = ((mouseLocation.x ^ mouseLocation.y) & 0x1); - this.appendRandomBitToRandomBitsCollector(randomBit); -*/ - }, - - //------------------------------------------------------------------------- + var randomValuesArray = new Uint8Array(bytesToCollect); + this.browserCrypto().getRandomValues(randomValuesArray); + for (var i = 0; i < randomValuesArray.length; i++) { + this.updateGeneratorWithValue(randomValuesArray[i]); + } - 'numberOfRandomBits': function() { - return 1; + setTimeout(this.collectEntropy, this.intervalTime()); }, //------------------------------------------------------------------------- - - 'pollingFrequency': function() { - return 10; - }, - - //------------------------------------------------------------------------- __syntaxFix__: "syntax fix" }); @@ -635,7 +589,7 @@ Clipperz.logWarning("Fortuna generator has not enough entropy, yet!"); }, //------------------------------------------------------------------------- - +/* 'dump': function(appendToDoc) { var tbl; var i,c; @@ -741,7 +695,7 @@ Clipperz.logWarning("Fortuna generator has not enough entropy, yet!"); return tbl; }, - +*/ //----------------------------------------------------------------------------- __syntaxFix__: "syntax fix" }); @@ -784,7 +738,7 @@ Clipperz.Crypto.PRNG.Random.prototype = MochiKit.Base.update(null, { //############################################################################# -_clipperz_crypt_prng_defaultPRNG = null; +var _clipperz_crypt_prng_defaultPRNG = null; Clipperz.Crypto.PRNG.defaultRandomGenerator = function() { if (_clipperz_crypt_prng_defaultPRNG == null) { @@ -816,16 +770,26 @@ Clipperz.Crypto.PRNG.defaultRandomGenerator = function() { //............................................................. // - // KeyboardRandomnessSource + // CryptoRandomRandomnessSource // //............................................................. { var newRandomnessSource; + var browserCrypto; - newRandomnessSource = new Clipperz.Crypto.PRNG.KeyboardRandomnessSource(); - _clipperz_crypt_prng_defaultPRNG.addRandomnessSource(newRandomnessSource); + 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; |