Merge remote-tracking branch 'github/master' into nmaster

14 files changed, 390 insertions, 336 deletions

diff --git a/frontend/beta/js/Clipperz/Base.js b/frontend/beta/js/Clipperz/Base.js
index cf40314..1c6faa1 100644
--- a/frontend/beta/js/Clipperz/Base.js
+++ b/frontend/beta/js/Clipperz/Base.js
@@ -243,12 +243,40 @@ MochiKit.Base.update(Clipperz.Base, {
 			result = aValue;
 		}
 		
 		return result;
 	},
 
+	'javascriptInjectionPattern': new RegExp("javascript:\/\/\"", "g"),
+	
+	'sanitizeUrl': function(aValue) {
+		var	result;
+		
+		if ((aValue != null) && this.javascriptInjectionPattern.test(aValue)) {
+			result = aValue.replace(this.javascriptInjectionPattern, '');
+			console.log("sanitized url", aValue, result);
+		} else {
+			result = aValue;
+		}
+
+		return result;
+	},
+
+	'sanitizeFavicon': function(aValue) {
+		var	result;
+		
+		if ((aValue != null) && this.javascriptInjectionPattern.test(aValue)) {
+			result = aValue.replace(this.javascriptInjectionPattern, '');
+			console.log("sanitized favicon", aValue, result);
+		} else {
+			result = aValue;
+		}
+
+		return result;
+	},
+
 	//-------------------------------------------------------------------------
 
 	'exception': {
 		'AbstractMethod': 		new MochiKit.Base.NamedError("Clipperz.Base.exception.AbstractMethod"),
 		'UnknownType':    		new MochiKit.Base.NamedError("Clipperz.Base.exception.UnknownType"),
 		'VulnerabilityIssue':	new MochiKit.Base.NamedError("Clipperz.Base.exception.VulnerabilityIssue") 
diff --git a/frontend/beta/js/Clipperz/Crypto/PRNG.js b/frontend/beta/js/Clipperz/Crypto/PRNG.js
index b5c3f8a..6fdeca4 100644
--- a/frontend/beta/js/Clipperz/Crypto/PRNG.js
+++ b/frontend/beta/js/Clipperz/Crypto/PRNG.js
@@ -194,18 +194,12 @@ Clipperz.Crypto.PRNG.TimeRandomnessSource.prototype = MochiKit.Base.update(new C
 
 	'numberOfRandomBits': function() {
 		return 5;
 	},
 	
 	//-------------------------------------------------------------------------
-
-	'pollingFrequency': function() {
-		return 10;
-	},
-
-	//-------------------------------------------------------------------------
 	__syntaxFix__: "syntax fix"
 });
 
 //*****************************************************************************
 
 Clipperz.Crypto.PRNG.MouseRandomnessSource = function(args) {
@@ -242,18 +236,18 @@ Clipperz.Crypto.PRNG.MouseRandomnessSource.prototype = MochiKit.Base.update(new
 
 	'appendRandomBitsToRandomBitsCollector': function(aValue) {
 		var collectedBits;
 		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);
 		}
 		
 		this.setNumberOfRandomBitsCollected(numberOfRandomBitsCollected)
 	},
@@ -286,102 +280,60 @@ Clipperz.Crypto.PRNG.MouseRandomnessSource.prototype = MochiKit.Base.update(new
 
 	'numberOfRandomBits': function() {
 		return 1;
 	},
 	
 	//-------------------------------------------------------------------------
-
-	'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, {
-
-	//-------------------------------------------------------------------------
-
-	'randomBitsCollector': function() {
-		return this._randomBitsCollector;
-	},
+Clipperz.Crypto.PRNG.CryptoRandomRandomnessSource.prototype = MochiKit.Base.update(new Clipperz.Crypto.PRNG.RandomnessSource, {
 
-	'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"
 });
 
 //#############################################################################
 
 Clipperz.Crypto.PRNG.Fortuna = function(args) {
@@ -604,35 +556,29 @@ MochiKit.Logging.logWarning("Fortuna generator has not enough entropy, yet!");
 
 	//-------------------------------------------------------------------------
 
 	'deferredEntropyCollection': function(aValue) {
 		var result;
 
-//MochiKit.Logging.logDebug(">>> PRNG.deferredEntropyCollection");
 
 		if (this.isReadyToGenerateRandomValues()) {
-//MochiKit.Logging.logDebug("--- PRNG.deferredEntropyCollection - 1");
 			result = aValue;
 		} else {
-//MochiKit.Logging.logDebug("--- PRNG.deferredEntropyCollection - 2");
 			var deferredResult;
 
 			Clipperz.NotificationCenter.notify(this, 'updatedProgressState', 'collectingEntropy', true);
 
 			deferredResult = new MochiKit.Async.Deferred();
-//			deferredResult.addBoth(function(res) {MochiKit.Logging.logDebug("1.2.1 - PRNG.deferredEntropyCollection - 1: " + res); return res;});
 			deferredResult.addCallback(MochiKit.Base.partial(MochiKit.Async.succeed, aValue));
-//			deferredResult.addBoth(function(res) {MochiKit.Logging.logDebug("1.2.2 - PRNG.deferredEntropyCollection - 2: " + res); return res;});
 			MochiKit.Signal.connect(this,
 									'readyToGenerateRandomBytes',
 									deferredResult,
 									'callback');
 									
 			result = deferredResult;
 		}
-//MochiKit.Logging.logDebug("<<< PRNG.deferredEntropyCollection - result: " + result);
 
 		return result;
 	},
 	
 	//-------------------------------------------------------------------------
 
@@ -640,13 +586,13 @@ MochiKit.Logging.logWarning("Fortuna generator has not enough entropy, yet!");
 		while (! this.isReadyToGenerateRandomValues()) {
 			this.addRandomByte(Math.floor(Math.random() * 32), Math.floor(Math.random() * 32), Math.floor(Math.random() * 256));
 		}
 	},
 	
 	//-------------------------------------------------------------------------
-
+/*
 	'dump': function(appendToDoc) {
 		var tbl;
 		var i,c;
 		
 		tbl = document.createElement("table");
 		tbl.border = 0;
@@ -746,13 +692,13 @@ MochiKit.Logging.logWarning("Fortuna generator has not enough entropy, yet!");
 			}
 			ne.appendChild(tbl);
 		}
 
 		return tbl;
 	},
-
+*/
 	//-----------------------------------------------------------------------------
 	__syntaxFix__: "syntax fix"
 });
 
 //#############################################################################
 
@@ -821,22 +767,32 @@ Clipperz.Crypto.PRNG.defaultRandomGenerator = function() {
 			newRandomnessSource = new Clipperz.Crypto.PRNG.MouseRandomnessSource();
 			_clipperz_crypt_prng_defaultPRNG.addRandomnessSource(newRandomnessSource);
 		}
 
 		//.............................................................
 		//
-		//		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;
 };
 
 //#############################################################################
diff --git a/frontend/beta/js/Clipperz/Crypto/SRP.js b/frontend/beta/js/Clipperz/Crypto/SRP.js
index 8cc80ba..8c522ad 100644
--- a/frontend/beta/js/Clipperz/Crypto/SRP.js
+++ b/frontend/beta/js/Clipperz/Crypto/SRP.js
@@ -41,12 +41,14 @@ Clipperz.Crypto.SRP.NAME = "Clipperz.Crypto.SRP";
 //#############################################################################
 
 MochiKit.Base.update(Clipperz.Crypto.SRP, {
 
 	'_n': null,
 	'_g': null,
+	'_k': null,
+	
 	//-------------------------------------------------------------------------
 
 	'n': function() {
 		if (Clipperz.Crypto.SRP._n == null) {
 		 	Clipperz.Crypto.SRP._n = new Clipperz.Crypto.BigInt("115b8b692e0e045692cf280b436735c77a5a9e8a9e7ed56c965f87db5b2a2ece3", 16);
 		}
@@ -61,12 +63,21 @@ MochiKit.Base.update(Clipperz.Crypto.SRP, {
 			Clipperz.Crypto.SRP._g = new Clipperz.Crypto.BigInt(2);	//	eventually 5 (as suggested on the Diffi-Helmann documentation)
 		}
 		
 		return Clipperz.Crypto.SRP._g;
 	},
 
+	'k': function() {
+		if (Clipperz.Crypto.SRP._k == null) {
+//			Clipperz.Crypto.SRP._k = new Clipperz.Crypto.BigInt(this.stringHash(this.n().asString() + this.g().asString()), 16);
+			Clipperz.Crypto.SRP._k = new Clipperz.Crypto.BigInt("64398bff522814e306a97cb9bfc4364b7eed16a8c17c5208a40a2bad2933c8e", 16);
+		}
+		
+		return Clipperz.Crypto.SRP._k;
+	},
+	
 	//-----------------------------------------------------------------------------
 
 	'exception': {
 		'InvalidValue': new MochiKit.Base.NamedError("Clipperz.Crypto.SRP.exception.InvalidValue") 
 	},
 
@@ -126,40 +137,36 @@ Clipperz.Crypto.SRP.Connection.prototype = MochiKit.Base.update(null, {
 	//-------------------------------------------------------------------------
 
 	'a': function () {
 		if (this._a == null) {
 			this._a = new Clipperz.Crypto.BigInt(Clipperz.Crypto.PRNG.defaultRandomGenerator().getRandomBytes(32).toHexString().substring(2), 16);
 //			this._a = new Clipperz.Crypto.BigInt("37532428169486597638072888476611365392249575518156687476805936694442691012367", 10);
-//MochiKit.Logging.logDebug("SRP a: " + this._a);
 		}
 		
 		return this._a;
 	},
 
 	//-------------------------------------------------------------------------
 
 	'A': function () {
 		if (this._A == null) {
-			//	Warning: this value should be strictly greater than zero: how should we perform this check?
+			//	Warning: this value should be strictly greater than zero
 			this._A = Clipperz.Crypto.SRP.g().powerModule(this.a(), Clipperz.Crypto.SRP.n());
-			
-			if (this._A.equals(0)) {
-MochiKit.Logging.logError("Clipperz.Crypto.SRP.Connection: trying to set 'A' to 0.");
+			if (this._A.equals(0) || negative(this._A)) {
+				MochiKit.Logging.logError("Clipperz.Crypto.SRP.Connection: trying to set 'A' to 0.");
 				throw Clipperz.Crypto.SRP.exception.InvalidValue;
 			}
-//MochiKit.Logging.logDebug("SRP A: " + this._A);
 		}
 		
 		return this._A;
 	},
 
 	//-------------------------------------------------------------------------
 
 	's': function () {
 		return this._s;
-//MochiKit.Logging.logDebug("SRP s: " + this._S);
 	},
 
 	'set_s': function(aValue) {
 		this._s = aValue;
 	},
 	
@@ -167,39 +174,35 @@ MochiKit.Logging.logError("Clipperz.Crypto.SRP.Connection: trying to set 'A' to
 
 	'B': function () {
 		return this._B;
 	},
 
 	'set_B': function(aValue) {
-		//	Warning: this value should be strictly greater than zero: how should we perform this check?
-		if (! aValue.equals(0)) {
-			this._B = aValue;
-//MochiKit.Logging.logDebug("SRP B: " + this._B);
-		} else {
-MochiKit.Logging.logError("Clipperz.Crypto.SRP.Connection: trying to set 'B' to 0.");
+		//	Warning: this value should be strictly greater than zero
+		this._B = aValue;
+		if (this._B.equals(0) || negative(this._B)) {
+			MochiKit.Logging.logError("Clipperz.Crypto.SRP.Connection: trying to set 'B' to 0.");
 			throw Clipperz.Crypto.SRP.exception.InvalidValue;
 		}
 	},
 	
 	//-------------------------------------------------------------------------
 
 	'x': function () {
 		if (this._x == null) {
 			this._x = new Clipperz.Crypto.BigInt(this.stringHash(this.s().asString(16, 64) + this.P()), 16);
-//MochiKit.Logging.logDebug("SRP x: " + this._x);
 		}
 		
 		return this._x;
 	},
 
 	//-------------------------------------------------------------------------
 
 	'u': function () {
 		if (this._u == null) {
-			this._u = new Clipperz.Crypto.BigInt(this.stringHash(this.B().asString()), 16);
-//MochiKit.Logging.logDebug("SRP u: " + this._u);
+			this._u = new Clipperz.Crypto.BigInt(this.stringHash(this.A().asString() + this.B().asString()), 16);
 		}
 		
 		return this._u;
 	},
 
 	//-------------------------------------------------------------------------
@@ -210,50 +213,66 @@ MochiKit.Logging.logError("Clipperz.Crypto.SRP.Connection: trying to set 'B' to
 			var	srp;
 
 			bigint = Clipperz.Crypto.BigInt;
 			srp = 	 Clipperz.Crypto.SRP;
 
 			this._S =	bigint.powerModule(
-								bigint.subtract(this.B(), bigint.powerModule(srp.g(), this.x(), srp.n())),
-								bigint.add(this.a(), bigint.multiply(this.u(), this.x())),
-								srp.n()
+							bigint.subtract(
+								this.B(),
+								bigint.multiply(
+									Clipperz.Crypto.SRP.k(),
+									bigint.powerModule(srp.g(), this.x(), srp.n())
+								)
+							),
+							bigint.add(this.a(), bigint.multiply(this.u(), this.x())),
+							srp.n()
 						)
-//MochiKit.Logging.logDebug("SRP S: " + this._S);
 		}
 		
 		return this._S;
 	},
 
 	//-------------------------------------------------------------------------
 
 	'K': function () {
 		if (this._K == null) {
 			this._K = this.stringHash(this.S().asString());
-//MochiKit.Logging.logDebug("SRP K: " + this._K);
 		}
 		
 		return this._K;
 	},
 
 	//-------------------------------------------------------------------------
 
 	'M1': function () {
 		if (this._M1 == null) {
-			this._M1 = this.stringHash(this.A().asString(10) + this.B().asString(10) + this.K());
-//MochiKit.Logging.logDebug("SRP M1: " + this._M1);
+//			this._M1 = this.stringHash(this.A().asString(10) + this.B().asString(10) + this.K());
+
+			//	http://srp.stanford.edu/design.html
+			//	User -> Host:  M = H(H(N) xor H(g), H(I), s, A, B, K)
+
+			this._M1 = this.stringHash(
+				"597626870978286801440197562148588907434001483655788865609375806439877501869636875571920406529" +
+				this.stringHash(this.C()) +
+				this.s().asString() +
+				this.A().asString() +
+				this.B().asString() +
+				this.K()
+			);
+//console.log("M1", this._M1);
 		}
 		
 		return this._M1;
 	},
 
 	//-------------------------------------------------------------------------
 
 	'M2': function () {
 		if (this._M2 == null) {
 			this._M2 = this.stringHash(this.A().asString(10) + this.M1() + this.K());
-//MochiKit.Logging.logDebug("SRP M2: " + this._M2);
+//console.log("M2", this._M2);
 		}
 		
 		return this._M2;
 	},
 
 	//=========================================================================
diff --git a/frontend/beta/js/Clipperz/PM/BookmarkletProcessor.js b/frontend/beta/js/Clipperz/PM/BookmarkletProcessor.js
index 2295d3f..369b9ce 100644
--- a/frontend/beta/js/Clipperz/PM/BookmarkletProcessor.js
+++ b/frontend/beta/js/Clipperz/PM/BookmarkletProcessor.js
@@ -135,13 +135,13 @@ Clipperz.PM.BookmarkletProcessor.prototype = MochiKit.Base.update(null, {
 	//-------------------------------------------------------------------------
 
 	'hostname': function() {
 		if (this._hostname == null) {
 			var actionUrl;
 			
-			actionUrl = this.configuration()['form']['attributes']['action'];
+			actionUrl = Clipperz.Base.sanitizeUrl(this.configuration()['form']['attributes']['action']);
 //MochiKit.Logging.logDebug("+++ actionUrl: " + actionUrl);
 			this._hostname = actionUrl.replace(/^https?:\/\/([^\/]*)\/.*/, '$1');
 		}
 		
 		return this._hostname;
 	},
diff --git a/frontend/beta/js/Clipperz/PM/Components/RecordDetail/DirectLoginBindingComponent.js b/frontend/beta/js/Clipperz/PM/Components/RecordDetail/DirectLoginBindingComponent.js
index 0e4640e..a5a4697 100644
--- a/frontend/beta/js/Clipperz/PM/Components/RecordDetail/DirectLoginBindingComponent.js
+++ b/frontend/beta/js/Clipperz/PM/Components/RecordDetail/DirectLoginBindingComponent.js
@@ -97,13 +97,13 @@ YAHOO.extendX(Clipperz.PM.Components.RecordDetail.DirectLoginBindingComponent, C
 		recordFields = this.directLoginBinding().directLogin().record().currentVersion().fields();
 		result = [];
 		option = {tag:'option', value:null, html:'---'};
 		result.push(option);
 		for (recordFieldKey in recordFields) {
 //	TODO: remove the value: field and replace it with element.dom.value = <some value>
-			option = {tag:'option', value:recordFieldKey, html:recordFields[recordFieldKey].label()}
+			option = {tag:'option', value:recordFieldKey, html:Clipperz.Base.sanitizeString(recordFields[recordFieldKey].label())}
 			if (recordFieldKey == this.directLoginBinding().fieldKey()) {
 				option['selected'] = true;
 			}
 			result.push(option);
 		}
 //MochiKit.Logging.logDebug("<<< DirectLoginBindingComponent.recordFieldOptions");
@@ -147,13 +147,13 @@ YAHOO.extendX(Clipperz.PM.Components.RecordDetail.DirectLoginBindingComponent, C
 
 	'updateViewMode': function() {
 //MochiKit.Logging.logDebug(">>> DirectLoginBindingComponent.updateViewMode");
 		this.getElement('editModeBox').hide();
 		this.getElement('viewModeBox').show();
 
-		this.getElement('viewValue').update(this.directLoginBinding().field().label());
+		this.getElement('viewValue').update(Clipperz.Base.sanitizeString(this.directLoginBinding().field().label()));
 //MochiKit.Logging.logDebug("<<< DirectLoginBindingComponent.updateViewMode");
 	},
 
 	//-------------------------------------------------------------------------
 
 	'synchronizeComponentValues': function() {
diff --git a/frontend/beta/js/Clipperz/PM/DataModel/DirectLogin.js b/frontend/beta/js/Clipperz/PM/DataModel/DirectLogin.js
index c0cfa3c..56d9d59 100644
--- a/frontend/beta/js/Clipperz/PM/DataModel/DirectLogin.js
+++ b/frontend/beta/js/Clipperz/PM/DataModel/DirectLogin.js
@@ -35,13 +35,13 @@ Clipperz.PM.DataModel.DirectLogin = function(args) {
 	args = args || {};
 
 //MochiKit.Logging.logDebug("--- new Clipperz.PM.DataModel.DirectLogin - args: " + Clipperz.Base.serializeJSON(MochiKit.Base.keys(args)));
 	this._record = args.record || null;
 	this._label = args.label || "unnamed record"
 	this._reference = args.reference || Clipperz.PM.Crypto.randomKey();
-	this._favicon = args.favicon || null;
+	this._favicon = Clipperz.Base.sanitizeFavicon(args.favicon) || null;
 	this._bookmarkletVersion = args.bookmarkletVersion || "0.1";
 
 	this._directLoginInputs = null;
 	
 	this._formValues = args.formValues || {};
 	this.setFormData(args.formData || null);
@@ -99,15 +99,15 @@ Clipperz.PM.DataModel.DirectLogin.prototype = MochiKit.Base.update(null, {
 
 	'favicon': function() {
 		if (this._favicon == null) {
 			var	actionUrl;
 			var hostname;
 			
-			actionUrl = this.formData()['attributes']['action'];
+			actionUrl = this.action();
 			hostname = actionUrl.replace(/^https?:\/\/([^\/]*)\/.*/, '$1');
-			this._favicon = "http://" + hostname + "/favicon.ico";
+			this._favicon = Clipperz.Base.sanitizeFavicon("http://" + hostname + "/favicon.ico");
 		}
 
 		return this._favicon;
 	},
 
 	//-------------------------------------------------------------------------
@@ -134,12 +134,20 @@ Clipperz.PM.DataModel.DirectLogin.prototype = MochiKit.Base.update(null, {
 	},
 
 	'setFixedFavicon': function(aValue) {
 		this._fixedFavicon = aValue;
 	},
 	
+	'action': function () {
+		var	result;
+		
+		result = Clipperz.Base.sanitizeUrl(this.formData()['attributes']['action']);
+		
+		return result;
+	},
+	
 	//-------------------------------------------------------------------------
 
 	'bookmarkletVersion': function() {
 		return this._bookmarkletVersion;
 	},
 	
@@ -439,13 +447,13 @@ Clipperz.PM.DataModel.DirectLogin.prototype = MochiKit.Base.update(null, {
 //			MochiKit.DOM.currentDocument().write('<html><head><title>' + this.label() + '</title><META http-equiv="Content-Type" content="text/html; charset=utf-8" /></head><body></body></html>')
 //MochiKit.Logging.logDebug("### runDirectLogin - 3.1");
 			MochiKit.DOM.appendChildNodes(MochiKit.DOM.currentDocument().body, MochiKit.DOM.H3(null, "Loading " + this.label() + " ..."));
 //MochiKit.Logging.logDebug("### runDirectLogin - 4");
 //console.log(this.formData()['attributes']);
 			formElement = MochiKit.DOM.FORM(MochiKit.Base.update({id:'directLoginForm'}, {	'method':this.formData()['attributes']['method'],
-																							'action':this.formData()['attributes']['action']}));
+																							'action': this.action()}));
 //MochiKit.Logging.logDebug("### runDirectLogin - 5");
 			formSubmitFunction = MochiKit.Base.method(formElement, 'submit');
 //MochiKit.Logging.logDebug("### runDirectLogin - 6");
 
 			MochiKit.DOM.appendChildNodes(MochiKit.DOM.currentDocument().body,
 				MochiKit.DOM.DIV({style:'display:none; visibility:hidden;'}, formElement)
@@ -484,15 +492,15 @@ Clipperz.PM.DataModel.DirectLogin.prototype = MochiKit.Base.update(null, {
 
 	'runDirectLogin': function(aNewWindow) {
 		var	newWindow;
 
 //console.log("formData.attributes", this.formData()['attributes']);
 //		if (/^javascript/.test(this.formData()['attributes']['action'])) {
-		if ((/^(https?|webdav|ftp)\:/.test(this.formData()['attributes']['action']) == false) &&
-			(this.formData()['attributes']['type'] != 'http_auth'))
-		{
+		if ((/^(https?|webdav|ftp)\:/.test(this.action()) == false) &&
+			(this.formData()['attributes']['type'] != 'http_auth')
+		) {
 			var messageBoxConfiguration;
 
 			if (typeof(aNewWindow) != 'undefined') {
 				aNewWindow.close();
 			}
 
diff --git a/frontend/beta/js/Clipperz/PM/DataModel/DirectLoginReference.js b/frontend/beta/js/Clipperz/PM/DataModel/DirectLoginReference.js
index 236d7c9..ba302da 100644
--- a/frontend/beta/js/Clipperz/PM/DataModel/DirectLoginReference.js
+++ b/frontend/beta/js/Clipperz/PM/DataModel/DirectLoginReference.js
@@ -44,13 +44,13 @@ Clipperz.PM.DataModel.DirectLoginReference = function(args) {
 		this._directLogin = args.directLogin;
 		this._record = args.directLogin.record();
 	} else {
 		this._reference = args.reference;
 		this._recordReference = args.record;
 		this._label = args.label;
-		this._favicon = args.favicon || null;
+		this._favicon = Clipperz.Base.sanitizeFavicon(args.favicon) || null;
 	
 		this._directLogin = null;
 		this._record = null;
 	}
 
 	this._fixedFavicon = null;
diff --git a/frontend/beta/js/Clipperz/PM/Proxy/Proxy.Offline.DataStore.js b/frontend/beta/js/Clipperz/PM/Proxy/Proxy.Offline.DataStore.js
index 1a5caff..b0b9b63 100644
--- a/frontend/beta/js/Clipperz/PM/Proxy/Proxy.Offline.DataStore.js
+++ b/frontend/beta/js/Clipperz/PM/Proxy/Proxy.Offline.DataStore.js
@@ -34,12 +34,13 @@ Clipperz.PM.Proxy.Offline.DataStore = function(args) {
 	this._isReadOnly = (typeof(args.readOnly) == 'undefined' ? true : args.readOnly);
 	this._shouldPayTolls = args.shouldPayTolls || false;
 
 	this._tolls = {};
 	this._connections = {};
 
+	this._C = null;
 	this._b = null;
 	this._B = null;
 	this._A = null;
 	this._userData = null;
 
 	return this;
@@ -141,12 +142,22 @@ Clipperz.PM.Proxy.Offline.DataStore.prototype = MochiKit.Base.update(null, {
 
 		return deferredResult;
 	},
 
 	//=========================================================================
 
+	'C': function() {
+		return this._C;
+	},
+
+	'set_C': function(aValue) {
+		this._C = aValue;
+	},
+
+	//-------------------------------------------------------------------------
+
 	'b': function() {
 		return this._b;
 	},
 
 	'set_b': function(aValue) {
 		this._b = aValue;
@@ -233,14 +244,14 @@ Clipperz.PM.Proxy.Offline.DataStore.prototype = MochiKit.Base.update(null, {
 				throw "Missing toll";
 			}
 		}
 	},
 
 	//=========================================================================
-	
-	'processMessage': function(aFunctionName, someParameters) {
+
+	'processMessage': function (aFunctionName, someParameters) {
 		var result;
 
 		switch(aFunctionName) {
 			case 'knock':
 				result = this._knock(someParameters);
 				break;
@@ -300,20 +311,20 @@ Clipperz.PM.Proxy.Offline.DataStore.prototype = MochiKit.Base.update(null, {
 					'records':	{}
 				}
 			} else {
 				throw "user already exists";
 			}
 		} else {
-			throw Clipperz.PM.Proxy.Offline.DataStore.exception.ReadOnly;
+		throw Clipperz.PM.Proxy.Offline.DataStore.exception.ReadOnly;
 		}
 
 		result = {
 			result: {
 				'lock':		this.data()['users'][someParameters['credentials']['C']]['lock'],
 				'result':	'done'
-			},
+	},
 			toll:   this.getTollForRequestType('CONNECT')
 		}
 
 		return MochiKit.Async.succeed(result);
 	},
 
@@ -337,38 +348,54 @@ Clipperz.PM.Proxy.Offline.DataStore.prototype = MochiKit.Base.update(null, {
 				this.setUserData(userData);
 			} else {
 				this.setUserData(this.data()['users']['catchAllUser']);
 			}
 
 			randomBytes = Clipperz.Crypto.Base.generateRandomSeed();
+			this.set_C(someParameters.parameters.C);
 			this.set_b(new Clipperz.Crypto.BigInt(randomBytes, 16));
 			v = new Clipperz.Crypto.BigInt(this.userData()['v'], 16);
-			this.set_B(v.add(Clipperz.Crypto.SRP.g().powerModule(this.b(), Clipperz.Crypto.SRP.n())));
+			this.set_B((Clipperz.Crypto.SRP.k().multiply(v)).add(Clipperz.Crypto.SRP.g().powerModule(this.b(), Clipperz.Crypto.SRP.n())));
 			
 			this.set_A(someParameters.parameters.A);
 			
 			result['s'] = this.userData()['s'];
 			result['B'] = this.B().asString(16);
 			
 			nextTollRequestType = 'CONNECT';
 		} else if (someParameters.message == "credentialCheck") {
-			var v, u, S, A, K, M1;
+			var v, u, s, S, A, K, M1;
+			var stringHash = function (aValue) {
+				return Clipperz.PM.Crypto.encryptingFunctions.versions[someParameters.version].hash(new Clipperz.ByteArray(aValue)).toHexString().substring(2);
+			};
 			
 //console.log(">>> Proxy.Offline.DataStore._handshake.credentialCheck", someParameters);
 			v = new Clipperz.Crypto.BigInt(this.userData()['v'], 16);
-			u = new Clipperz.Crypto.BigInt(Clipperz.PM.Crypto.encryptingFunctions.versions[someParameters.version].hash(new Clipperz.ByteArray(this.B().asString(10))).toHexString(), 16);
 			A = new Clipperz.Crypto.BigInt(this.A(), 16);
+			u = new Clipperz.Crypto.BigInt(Clipperz.PM.Crypto.encryptingFunctions.versions[someParameters.version].hash(new Clipperz.ByteArray(A.asString(10) + this.B().asString(10))).toHexString(), 16);
+			s = new Clipperz.Crypto.BigInt(this.userData()['s'], 16);
 			S = (A.multiply(v.powerModule(u, Clipperz.Crypto.SRP.n()))).powerModule(this.b(), Clipperz.Crypto.SRP.n());
 
-			K = Clipperz.PM.Crypto.encryptingFunctions.versions[someParameters.version].hash(new Clipperz.ByteArray(S.asString(10))).toHexString().slice(2);
+			K = stringHash(S.asString(10));
 
-			M1 = Clipperz.PM.Crypto.encryptingFunctions.versions[someParameters.version].hash(new Clipperz.ByteArray(A.asString(10) + this.B().asString(10) + K)).toHexString().slice(2);
+			M1 = stringHash(
+				"597626870978286801440197562148588907434001483655788865609375806439877501869636875571920406529" +
+				stringHash(this.C()) +
+				s.asString(10) +
+				A.asString(10) +
+				this.B().asString(10) +
+				K
+			);
 			if (someParameters.parameters.M1 == M1) {
 				var M2;
 				
-				M2 = Clipperz.PM.Crypto.encryptingFunctions.versions[someParameters.version].hash(new Clipperz.ByteArray(A.asString(10) + someParameters.parameters.M1 + K)).toHexString().slice(2);
+				M2 = stringHash(
+					A.asString(10) +
+					someParameters.parameters.M1 +
+					K
+				);
 				result['M2'] = M2;
 			} else {
 				throw new Error("Client checksum verification failed! Expected <" + M1 + ">, received <" + someParameters.parameters.M1 + ">.", "Error");
 			}
 
 			nextTollRequestType = 'MESSAGE';
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
@@ -18,12 +18,14 @@ refer to http://www.clipperz.com.
 
 * You should have received a copy of the GNU Affero General Public
   License along with Clipperz. If not, see http://www.gnu.org/licenses/.
 
 */
 
+"use strict";
+
 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!";
@@ -194,18 +196,12 @@ Clipperz.Crypto.PRNG.TimeRandomnessSource.prototype = MochiKit.Base.update(new C
 
 	'numberOfRandomBits': function() {
 		return 5;
 	},
 	
 	//-------------------------------------------------------------------------
-
-	'pollingFrequency': function() {
-		return 10;
-	},
-
-	//-------------------------------------------------------------------------
 	__syntaxFix__: "syntax fix"
 });
 
 //*****************************************************************************
 
 Clipperz.Crypto.PRNG.MouseRandomnessSource = function(args) {
@@ -242,18 +238,18 @@ Clipperz.Crypto.PRNG.MouseRandomnessSource.prototype = MochiKit.Base.update(new
 
 	'appendRandomBitsToRandomBitsCollector': function(aValue) {
 		var collectedBits;
 		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);
 		}
 		
 		this.setNumberOfRandomBitsCollected(numberOfRandomBitsCollected)
 	},
@@ -286,102 +282,60 @@ Clipperz.Crypto.PRNG.MouseRandomnessSource.prototype = MochiKit.Base.update(new
 
 	'numberOfRandomBits': function() {
 		return 1;
 	},
 	
 	//-------------------------------------------------------------------------
-
-	'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"
 });
 
 //#############################################################################
 
 Clipperz.Crypto.PRNG.Fortuna = function(args) {
@@ -632,13 +586,13 @@ Clipperz.logWarning("Fortuna generator has not enough entropy, yet!");
 		while (! this.isReadyToGenerateRandomValues()) {
 			this.addRandomByte(Math.floor(Math.random() * 32), Math.floor(Math.random() * 32), Math.floor(Math.random() * 256));
 		}
 	},
 	
 	//-------------------------------------------------------------------------
-
+/*
 	'dump': function(appendToDoc) {
 		var tbl;
 		var i,c;
 		
 		tbl = document.createElement("table");
 		tbl.border = 0;
@@ -738,13 +692,13 @@ Clipperz.logWarning("Fortuna generator has not enough entropy, yet!");
 			}
 			ne.appendChild(tbl);
 		}
 
 		return tbl;
 	},
-
+*/
 	//-----------------------------------------------------------------------------
 	__syntaxFix__: "syntax fix"
 });
 
 //#############################################################################
 
@@ -781,13 +735,13 @@ Clipperz.Crypto.PRNG.Random.prototype = MochiKit.Base.update(null, {
 	//-------------------------------------------------------------------------
 	__syntaxFix__: "syntax fix"
 });
 
 //#############################################################################
 
-_clipperz_crypt_prng_defaultPRNG = null;
+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();
 
 		//.............................................................
@@ -813,22 +767,32 @@ Clipperz.Crypto.PRNG.defaultRandomGenerator = function() {
 			newRandomnessSource = new Clipperz.Crypto.PRNG.MouseRandomnessSource();
 			_clipperz_crypt_prng_defaultPRNG.addRandomnessSource(newRandomnessSource);
 		}
 
 		//.............................................................
 		//
-		//		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;
 };
 
 //#############################################################################
diff --git a/frontend/delta/js/Clipperz/Crypto/SRP.js b/frontend/delta/js/Clipperz/Crypto/SRP.js
index 597e72d..6898dfb 100644
--- a/frontend/delta/js/Clipperz/Crypto/SRP.js
+++ b/frontend/delta/js/Clipperz/Crypto/SRP.js
@@ -41,12 +41,14 @@ Clipperz.Crypto.SRP.NAME = "Clipperz.Crypto.SRP";
 //#############################################################################
 
 MochiKit.Base.update(Clipperz.Crypto.SRP, {
 
 	'_n': null,
 	'_g': null,
+	'_k': null,
+	
 	//-------------------------------------------------------------------------
 
 	'n': function() {
 		if (Clipperz.Crypto.SRP._n == null) {
 		 	Clipperz.Crypto.SRP._n = new Clipperz.Crypto.BigInt("115b8b692e0e045692cf280b436735c77a5a9e8a9e7ed56c965f87db5b2a2ece3", 16);
 		}
@@ -61,12 +63,21 @@ MochiKit.Base.update(Clipperz.Crypto.SRP, {
 			Clipperz.Crypto.SRP._g = new Clipperz.Crypto.BigInt(2);	//	eventually 5 (as suggested on the Diffi-Helmann documentation)
 		}
 		
 		return Clipperz.Crypto.SRP._g;
 	},
 
+	'k': function() {
+		if (Clipperz.Crypto.SRP._k == null) {
+//			Clipperz.Crypto.SRP._k = new Clipperz.Crypto.BigInt(this.stringHash(this.n().asString() + this.g().asString()), 16);
+			Clipperz.Crypto.SRP._k = new Clipperz.Crypto.BigInt("64398bff522814e306a97cb9bfc4364b7eed16a8c17c5208a40a2bad2933c8e", 16);
+		}
+		
+		return Clipperz.Crypto.SRP._k;
+	},
+	
 	//-----------------------------------------------------------------------------
 
 	'exception': {
 		'InvalidValue': new MochiKit.Base.NamedError("Clipperz.Crypto.SRP.exception.InvalidValue") 
 	},
 
@@ -135,16 +146,15 @@ Clipperz.Crypto.SRP.Connection.prototype = MochiKit.Base.update(null, {
 	},
 
 	//-------------------------------------------------------------------------
 
 	'A': function () {
 		if (this._A == null) {
-			//	Warning: this value should be strictly greater than zero: how should we perform this check?
+			//	Warning: this value should be strictly greater than zero
 			this._A = Clipperz.Crypto.SRP.g().powerModule(this.a(), Clipperz.Crypto.SRP.n());
-			
-			if (this._A.equals(0)) {
+			if (this._A.equals(0) || negative(this._A)) {
 				Clipperz.logError("Clipperz.Crypto.SRP.Connection: trying to set 'A' to 0.");
 				throw Clipperz.Crypto.SRP.exception.InvalidValue;
 			}
 		}
 		
 		return this._A;
@@ -164,16 +174,15 @@ Clipperz.Crypto.SRP.Connection.prototype = MochiKit.Base.update(null, {
 
 	'B': function () {
 		return this._B;
 	},
 
 	'set_B': function(aValue) {
-		//	Warning: this value should be strictly greater than zero: how should we perform this check?
-		if (! aValue.equals(0)) {
-			this._B = aValue;
-		} else {
+		//	Warning: this value should be strictly greater than zero
+		this._B = aValue;
+		if (this._B.equals(0) || negative(this._B)) {
 			Clipperz.logError("Clipperz.Crypto.SRP.Connection: trying to set 'B' to 0.");
 			throw Clipperz.Crypto.SRP.exception.InvalidValue;
 		}
 	},
 	
 	//-------------------------------------------------------------------------
@@ -187,13 +196,13 @@ Clipperz.Crypto.SRP.Connection.prototype = MochiKit.Base.update(null, {
 	},
 
 	//-------------------------------------------------------------------------
 
 	'u': function () {
 		if (this._u == null) {
-			this._u = new Clipperz.Crypto.BigInt(this.stringHash(this.B().asString()), 16);
+			this._u = new Clipperz.Crypto.BigInt(this.stringHash(this.A().asString() + this.B().asString()), 16);
 		}
 		
 		return this._u;
 	},
 
 	//-------------------------------------------------------------------------
@@ -204,15 +213,21 @@ Clipperz.Crypto.SRP.Connection.prototype = MochiKit.Base.update(null, {
 			var	srp;
 
 			bigint = Clipperz.Crypto.BigInt;
 			srp = 	 Clipperz.Crypto.SRP;
 
 			this._S =	bigint.powerModule(
-								bigint.subtract(this.B(), bigint.powerModule(srp.g(), this.x(), srp.n())),
-								bigint.add(this.a(), bigint.multiply(this.u(), this.x())),
-								srp.n()
+							bigint.subtract(
+								this.B(),
+								bigint.multiply(
+									Clipperz.Crypto.SRP.k(),
+									bigint.powerModule(srp.g(), this.x(), srp.n())
+								)
+							),
+							bigint.add(this.a(), bigint.multiply(this.u(), this.x())),
+							srp.n()
 						)
 		}
 		
 		return this._S;
 	},
 
@@ -227,23 +242,37 @@ Clipperz.Crypto.SRP.Connection.prototype = MochiKit.Base.update(null, {
 	},
 
 	//-------------------------------------------------------------------------
 
 	'M1': function () {
 		if (this._M1 == null) {
-			this._M1 = this.stringHash(this.A().asString(10) + this.B().asString(10) + this.K());
+//			this._M1 = this.stringHash(this.A().asString(10) + this.B().asString(10) + this.K());
+
+			//	http://srp.stanford.edu/design.html
+			//	User -> Host:  M = H(H(N) xor H(g), H(I), s, A, B, K)
+
+			this._M1 = this.stringHash(
+				"597626870978286801440197562148588907434001483655788865609375806439877501869636875571920406529" +
+				this.stringHash(this.C()) +
+				this.s().asString() +
+				this.A().asString() +
+				this.B().asString() +
+				this.K()
+			);
+//console.log("M1", this._M1);
 		}
 		
 		return this._M1;
 	},
 
 	//-------------------------------------------------------------------------
 
 	'M2': function () {
 		if (this._M2 == null) {
 			this._M2 = this.stringHash(this.A().asString(10) + this.M1() + this.K());
+//console.log("M2", this._M2);
 		}
 		
 		return this._M2;
 	},
 
 	//=========================================================================
diff --git a/frontend/delta/js/Clipperz/PM/Proxy/Proxy.Offline.LocalStorageDataStore.js b/frontend/delta/js/Clipperz/PM/Proxy/Proxy.Offline.LocalStorageDataStore.js
index 3f16f70..d03f873 100644
--- a/frontend/delta/js/Clipperz/PM/Proxy/Proxy.Offline.LocalStorageDataStore.js
+++ b/frontend/delta/js/Clipperz/PM/Proxy/Proxy.Offline.LocalStorageDataStore.js
@@ -85,35 +85,50 @@ Clipperz.Base.extend(Clipperz.PM.Proxy.Offline.LocalStorageDataStore, Clipperz.P
 				aConnection['userData'] = this.data()['users']['catchAllUser'];
 			}
 
 			randomBytes = Clipperz.Crypto.Base.generateRandomSeed();
 			aConnection['b'] = new Clipperz.Crypto.BigInt(randomBytes, 16);
 			v = new Clipperz.Crypto.BigInt(aConnection['userData']['v'], 16);
-			aConnection['B'] = v.add(Clipperz.Crypto.SRP.g().powerModule(aConnection['b'], Clipperz.Crypto.SRP.n()));
+			aConnection['B'] = (Clipperz.Crypto.SRP.k().multiply(v)).add(Clipperz.Crypto.SRP.g().powerModule(aConnection['b'], Clipperz.Crypto.SRP.n()));
 			
 			aConnection['A'] = someParameters.parameters.A;
 			
 			result['s'] = aConnection['userData']['s'];
 			result['B'] = aConnection['B'].asString(16);
 			
 			nextTollRequestType = 'CONNECT';
 		} else if (someParameters.message == "credentialCheck") {
-			var v, u, S, A, K, M1;
+			var v, u, s, S, A, K, M1;
+			var stringHash = function (aValue) {
+				return Clipperz.PM.Crypto.encryptingFunctions.versions[someParameters.version].hash(new Clipperz.ByteArray(aValue)).toHexString().substring(2);
+			};
 			
 			v = new Clipperz.Crypto.BigInt(aConnection['userData']['v'], 16);
-			u = new Clipperz.Crypto.BigInt(Clipperz.PM.Crypto.encryptingFunctions.versions[someParameters.version].hash(new Clipperz.ByteArray(aConnection['B'].asString(10))).toHexString(), 16);
 			A = new Clipperz.Crypto.BigInt(aConnection['A'], 16);
+			u = new Clipperz.Crypto.BigInt(Clipperz.PM.Crypto.encryptingFunctions.versions[someParameters.version].hash(new Clipperz.ByteArray(A.asString(10) + aConnection['B'].asString(10))).toHexString(), 16);
+			s = new Clipperz.Crypto.BigInt(aConnection['userData']['s'], 16);
 			S = (A.multiply(v.powerModule(u, Clipperz.Crypto.SRP.n()))).powerModule(aConnection['b'], Clipperz.Crypto.SRP.n());
 
-			K = Clipperz.PM.Crypto.encryptingFunctions.versions[someParameters.version].hash(new Clipperz.ByteArray(S.asString(10))).toHexString().slice(2);
+			K = stringHash(S.asString(10));
 
-			M1 = Clipperz.PM.Crypto.encryptingFunctions.versions[someParameters.version].hash(new Clipperz.ByteArray(A.asString(10) + aConnection['B'].asString(10) + K)).toHexString().slice(2);
+			M1 = stringHash(
+				"597626870978286801440197562148588907434001483655788865609375806439877501869636875571920406529" +
+				stringHash(aConnection['C']) +
+				s.asString(10) +
+				A.asString(10) +
+				aConnection['B'].asString(10) +
+				K
+			);
 			if (someParameters.parameters.M1 == M1) {
 				var M2;
 				
-				M2 = Clipperz.PM.Crypto.encryptingFunctions.versions[someParameters.version].hash(new Clipperz.ByteArray(A.asString(10) + someParameters.parameters.M1 + K)).toHexString().slice(2);
+				M2 = stringHash(
+					A.asString(10) +
+					someParameters.parameters.M1 +
+					K
+				);
 				result['M2'] = M2;
 			} else {
 				throw new Error("Client checksum verification failed! Expected <" + M1 + ">, received <" + someParameters.parameters.M1 + ">.", "Error");
 			}
 
 			nextTollRequestType = 'MESSAGE';
diff --git a/frontend/gamma/js/Clipperz/Crypto/PRNG.js b/frontend/gamma/js/Clipperz/Crypto/PRNG.js
index c539f06..80d972f 100644
--- a/frontend/gamma/js/Clipperz/Crypto/PRNG.js
+++ b/frontend/gamma/js/Clipperz/Crypto/PRNG.js
@@ -18,12 +18,14 @@ refer to http://www.clipperz.com.
 
 * You should have received a copy of the GNU Affero General Public
   License along with Clipperz. If not, see http://www.gnu.org/licenses/.
 
 */
 
+"use strict";
+
 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!";
@@ -194,18 +196,12 @@ Clipperz.Crypto.PRNG.TimeRandomnessSource.prototype = MochiKit.Base.update(new C
 
 	'numberOfRandomBits': function() {
 		return 5;
 	},
 	
 	//-------------------------------------------------------------------------
-
-	'pollingFrequency': function() {
-		return 10;
-	},
-
-	//-------------------------------------------------------------------------
 	__syntaxFix__: "syntax fix"
 });
 
 //*****************************************************************************
 
 Clipperz.Crypto.PRNG.MouseRandomnessSource = function(args) {
@@ -242,18 +238,18 @@ Clipperz.Crypto.PRNG.MouseRandomnessSource.prototype = MochiKit.Base.update(new
 
 	'appendRandomBitsToRandomBitsCollector': function(aValue) {
 		var collectedBits;
 		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);
 		}
 		
 		this.setNumberOfRandomBitsCollected(numberOfRandomBitsCollected)
 	},
@@ -286,102 +282,60 @@ Clipperz.Crypto.PRNG.MouseRandomnessSource.prototype = MochiKit.Base.update(new
 
 	'numberOfRandomBits': function() {
 		return 1;
 	},
 	
 	//-------------------------------------------------------------------------
-
-	'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"
 });
 
 //#############################################################################
 
 Clipperz.Crypto.PRNG.Fortuna = function(args) {
@@ -632,13 +586,13 @@ Clipperz.logWarning("Fortuna generator has not enough entropy, yet!");
 		while (! this.isReadyToGenerateRandomValues()) {
 			this.addRandomByte(Math.floor(Math.random() * 32), Math.floor(Math.random() * 32), Math.floor(Math.random() * 256));
 		}
 	},
 	
 	//-------------------------------------------------------------------------
-
+/*
 	'dump': function(appendToDoc) {
 		var tbl;
 		var i,c;
 		
 		tbl = document.createElement("table");
 		tbl.border = 0;
@@ -738,13 +692,13 @@ Clipperz.logWarning("Fortuna generator has not enough entropy, yet!");
 			}
 			ne.appendChild(tbl);
 		}
 
 		return tbl;
 	},
-
+*/
 	//-----------------------------------------------------------------------------
 	__syntaxFix__: "syntax fix"
 });
 
 //#############################################################################
 
@@ -781,13 +735,13 @@ Clipperz.Crypto.PRNG.Random.prototype = MochiKit.Base.update(null, {
 	//-------------------------------------------------------------------------
 	__syntaxFix__: "syntax fix"
 });
 
 //#############################################################################
 
-_clipperz_crypt_prng_defaultPRNG = null;
+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();
 
 		//.............................................................
@@ -813,22 +767,32 @@ Clipperz.Crypto.PRNG.defaultRandomGenerator = function() {
 			newRandomnessSource = new Clipperz.Crypto.PRNG.MouseRandomnessSource();
 			_clipperz_crypt_prng_defaultPRNG.addRandomnessSource(newRandomnessSource);
 		}
 
 		//.............................................................
 		//
-		//		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;
 };
 
 //#############################################################################
diff --git a/frontend/gamma/js/Clipperz/Crypto/SRP.js b/frontend/gamma/js/Clipperz/Crypto/SRP.js
index 597e72d..6898dfb 100644
--- a/frontend/gamma/js/Clipperz/Crypto/SRP.js
+++ b/frontend/gamma/js/Clipperz/Crypto/SRP.js
@@ -41,12 +41,14 @@ Clipperz.Crypto.SRP.NAME = "Clipperz.Crypto.SRP";
 //#############################################################################
 
 MochiKit.Base.update(Clipperz.Crypto.SRP, {
 
 	'_n': null,
 	'_g': null,
+	'_k': null,
+	
 	//-------------------------------------------------------------------------
 
 	'n': function() {
 		if (Clipperz.Crypto.SRP._n == null) {
 		 	Clipperz.Crypto.SRP._n = new Clipperz.Crypto.BigInt("115b8b692e0e045692cf280b436735c77a5a9e8a9e7ed56c965f87db5b2a2ece3", 16);
 		}
@@ -61,12 +63,21 @@ MochiKit.Base.update(Clipperz.Crypto.SRP, {
 			Clipperz.Crypto.SRP._g = new Clipperz.Crypto.BigInt(2);	//	eventually 5 (as suggested on the Diffi-Helmann documentation)
 		}
 		
 		return Clipperz.Crypto.SRP._g;
 	},
 
+	'k': function() {
+		if (Clipperz.Crypto.SRP._k == null) {
+//			Clipperz.Crypto.SRP._k = new Clipperz.Crypto.BigInt(this.stringHash(this.n().asString() + this.g().asString()), 16);
+			Clipperz.Crypto.SRP._k = new Clipperz.Crypto.BigInt("64398bff522814e306a97cb9bfc4364b7eed16a8c17c5208a40a2bad2933c8e", 16);
+		}
+		
+		return Clipperz.Crypto.SRP._k;
+	},
+	
 	//-----------------------------------------------------------------------------
 
 	'exception': {
 		'InvalidValue': new MochiKit.Base.NamedError("Clipperz.Crypto.SRP.exception.InvalidValue") 
 	},
 
@@ -135,16 +146,15 @@ Clipperz.Crypto.SRP.Connection.prototype = MochiKit.Base.update(null, {
 	},
 
 	//-------------------------------------------------------------------------
 
 	'A': function () {
 		if (this._A == null) {
-			//	Warning: this value should be strictly greater than zero: how should we perform this check?
+			//	Warning: this value should be strictly greater than zero
 			this._A = Clipperz.Crypto.SRP.g().powerModule(this.a(), Clipperz.Crypto.SRP.n());
-			
-			if (this._A.equals(0)) {
+			if (this._A.equals(0) || negative(this._A)) {
 				Clipperz.logError("Clipperz.Crypto.SRP.Connection: trying to set 'A' to 0.");
 				throw Clipperz.Crypto.SRP.exception.InvalidValue;
 			}
 		}
 		
 		return this._A;
@@ -164,16 +174,15 @@ Clipperz.Crypto.SRP.Connection.prototype = MochiKit.Base.update(null, {
 
 	'B': function () {
 		return this._B;
 	},
 
 	'set_B': function(aValue) {
-		//	Warning: this value should be strictly greater than zero: how should we perform this check?
-		if (! aValue.equals(0)) {
-			this._B = aValue;
-		} else {
+		//	Warning: this value should be strictly greater than zero
+		this._B = aValue;
+		if (this._B.equals(0) || negative(this._B)) {
 			Clipperz.logError("Clipperz.Crypto.SRP.Connection: trying to set 'B' to 0.");
 			throw Clipperz.Crypto.SRP.exception.InvalidValue;
 		}
 	},
 	
 	//-------------------------------------------------------------------------
@@ -187,13 +196,13 @@ Clipperz.Crypto.SRP.Connection.prototype = MochiKit.Base.update(null, {
 	},
 
 	//-------------------------------------------------------------------------
 
 	'u': function () {
 		if (this._u == null) {
-			this._u = new Clipperz.Crypto.BigInt(this.stringHash(this.B().asString()), 16);
+			this._u = new Clipperz.Crypto.BigInt(this.stringHash(this.A().asString() + this.B().asString()), 16);
 		}
 		
 		return this._u;
 	},
 
 	//-------------------------------------------------------------------------
@@ -204,15 +213,21 @@ Clipperz.Crypto.SRP.Connection.prototype = MochiKit.Base.update(null, {
 			var	srp;
 
 			bigint = Clipperz.Crypto.BigInt;
 			srp = 	 Clipperz.Crypto.SRP;
 
 			this._S =	bigint.powerModule(
-								bigint.subtract(this.B(), bigint.powerModule(srp.g(), this.x(), srp.n())),
-								bigint.add(this.a(), bigint.multiply(this.u(), this.x())),
-								srp.n()
+							bigint.subtract(
+								this.B(),
+								bigint.multiply(
+									Clipperz.Crypto.SRP.k(),
+									bigint.powerModule(srp.g(), this.x(), srp.n())
+								)
+							),
+							bigint.add(this.a(), bigint.multiply(this.u(), this.x())),
+							srp.n()
 						)
 		}
 		
 		return this._S;
 	},
 
@@ -227,23 +242,37 @@ Clipperz.Crypto.SRP.Connection.prototype = MochiKit.Base.update(null, {
 	},
 
 	//-------------------------------------------------------------------------
 
 	'M1': function () {
 		if (this._M1 == null) {
-			this._M1 = this.stringHash(this.A().asString(10) + this.B().asString(10) + this.K());
+//			this._M1 = this.stringHash(this.A().asString(10) + this.B().asString(10) + this.K());
+
+			//	http://srp.stanford.edu/design.html
+			//	User -> Host:  M = H(H(N) xor H(g), H(I), s, A, B, K)
+
+			this._M1 = this.stringHash(
+				"597626870978286801440197562148588907434001483655788865609375806439877501869636875571920406529" +
+				this.stringHash(this.C()) +
+				this.s().asString() +
+				this.A().asString() +
+				this.B().asString() +
+				this.K()
+			);
+//console.log("M1", this._M1);
 		}
 		
 		return this._M1;
 	},
 
 	//-------------------------------------------------------------------------
 
 	'M2': function () {
 		if (this._M2 == null) {
 			this._M2 = this.stringHash(this.A().asString(10) + this.M1() + this.K());
+//console.log("M2", this._M2);
 		}
 		
 		return this._M2;
 	},
 
 	//=========================================================================
diff --git a/frontend/gamma/js/Clipperz/PM/Proxy/Proxy.Offline.DataStore.js b/frontend/gamma/js/Clipperz/PM/Proxy/Proxy.Offline.DataStore.js
index b806cb7..e5f68a8 100644
--- a/frontend/gamma/js/Clipperz/PM/Proxy/Proxy.Offline.DataStore.js
+++ b/frontend/gamma/js/Clipperz/PM/Proxy/Proxy.Offline.DataStore.js
@@ -33,13 +33,13 @@ Clipperz.PM.Proxy.Offline.DataStore = function(args) {
 	this._data = args.data || (typeof(_clipperz_dump_data_) != 'undefined' ? _clipperz_dump_data_ : null);
 	this._isReadOnly = (typeof(args.readOnly) == 'undefined' ? true : args.readOnly);
 	this._shouldPayTolls = args.shouldPayTolls || false;
 
 	this._tolls = {};
 	this._currentStaticConnection = null;
-	
+
 	return this;
 }
 
 Clipperz.Base.extend(Clipperz.PM.Proxy.Offline.DataStore, Object, {
 
 	//-------------------------------------------------------------------------
@@ -288,20 +288,20 @@ Clipperz.Base.extend(Clipperz.PM.Proxy.Offline.DataStore, Object, {
 					'records':	{}
 				}
 			} else {
 				throw "user already exists";
 			}
 		} else {
-			throw Clipperz.PM.Proxy.Offline.DataStore.exception.ReadOnly;
+		throw Clipperz.PM.Proxy.Offline.DataStore.exception.ReadOnly;
 		}
 
 		result = {
 			result: {
 				'lock':		this.data()['users'][someParameters['credentials']['C']]['lock'],
 				'result':	'done'
-			},
+	},
 			toll:   this.getTollForRequestType('CONNECT')
 		}
 
 		return result;
 	},
 
@@ -326,35 +326,50 @@ Clipperz.Base.extend(Clipperz.PM.Proxy.Offline.DataStore, Object, {
 				aConnection['userData'] = this.data()['users']['catchAllUser'];
 			}
 
 			randomBytes = Clipperz.Crypto.Base.generateRandomSeed();
 			aConnection['b'] = new Clipperz.Crypto.BigInt(randomBytes, 16);
 			v = new Clipperz.Crypto.BigInt(aConnection['userData']['v'], 16);
-			aConnection['B'] = v.add(Clipperz.Crypto.SRP.g().powerModule(aConnection['b'], Clipperz.Crypto.SRP.n()));
+			aConnection['B'] = (Clipperz.Crypto.SRP.k().multiply(v)).add(Clipperz.Crypto.SRP.g().powerModule(aConnection['b'], Clipperz.Crypto.SRP.n()));
 			
 			aConnection['A'] = someParameters.parameters.A;
 			
 			result['s'] = aConnection['userData']['s'];
 			result['B'] = aConnection['B'].asString(16);
 			
 			nextTollRequestType = 'CONNECT';
 		} else if (someParameters.message == "credentialCheck") {
-			var v, u, S, A, K, M1;
-			
+			var v, u, s, S, A, K, M1;
+			var stringHash = function (aValue) {
+				return Clipperz.PM.Crypto.encryptingFunctions.versions[someParameters.version].hash(new Clipperz.ByteArray(aValue)).toHexString().substring(2);
+			};
+
 			v = new Clipperz.Crypto.BigInt(aConnection['userData']['v'], 16);
-			u = new Clipperz.Crypto.BigInt(Clipperz.PM.Crypto.encryptingFunctions.versions[someParameters.version].hash(new Clipperz.ByteArray(aConnection['B'].asString(10))).toHexString(), 16);
 			A = new Clipperz.Crypto.BigInt(aConnection['A'], 16);
+			u = new Clipperz.Crypto.BigInt(Clipperz.PM.Crypto.encryptingFunctions.versions[someParameters.version].hash(new Clipperz.ByteArray(A.asString(10) + aConnection['B'].asString(10))).toHexString(), 16);
+			s = new Clipperz.Crypto.BigInt(aConnection['userData']['s'], 16);
 			S = (A.multiply(v.powerModule(u, Clipperz.Crypto.SRP.n()))).powerModule(aConnection['b'], Clipperz.Crypto.SRP.n());
 
-			K = Clipperz.PM.Crypto.encryptingFunctions.versions[someParameters.version].hash(new Clipperz.ByteArray(S.asString(10))).toHexString().slice(2);
+			K = stringHash(S.asString(10));
 
-			M1 = Clipperz.PM.Crypto.encryptingFunctions.versions[someParameters.version].hash(new Clipperz.ByteArray(A.asString(10) + aConnection['B'].asString(10) + K)).toHexString().slice(2);
+			M1 = stringHash(
+				"597626870978286801440197562148588907434001483655788865609375806439877501869636875571920406529" +
+				stringHash(aConnection['C']) +
+				s.asString(10) +
+				A.asString(10) +
+				aConnection['B'].asString(10) +
+				K
+			);
 			if (someParameters.parameters.M1 == M1) {
 				var M2;
 				
-				M2 = Clipperz.PM.Crypto.encryptingFunctions.versions[someParameters.version].hash(new Clipperz.ByteArray(A.asString(10) + someParameters.parameters.M1 + K)).toHexString().slice(2);
+				M2 = stringHash(
+					A.asString(10) +
+					someParameters.parameters.M1 +
+					K
+				);
 				result['M2'] = M2;
 			} else {
 				throw new Error("Client checksum verification failed! Expected <" + M1 + ">, received <" + someParameters.parameters.M1 + ">.", "Error");
 			}
 
 			nextTollRequestType = 'MESSAGE';