2 files changed, 82 insertions, 89 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
@@ -20,8 +20,10 @@ refer to http://www.clipperz.com.
   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!";
 }  
 
@@ -196,14 +198,8 @@ Clipperz.Crypto.PRNG.TimeRandomnessSource.prototype = MochiKit.Base.update(new C
                 return 5;
         },
         
         //-------------------------------------------------------------------------
-
-        'pollingFrequency': function() {
-                return 10;
-        },
-
-        //-------------------------------------------------------------------------
         __syntaxFix__: "syntax fix"
 });
 
 //*****************************************************************************
@@ -244,14 +240,14 @@ Clipperz.Crypto.PRNG.MouseRandomnessSource.prototype = MochiKit.Base.update(new
                 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);
                 }
                 
@@ -288,95 +284,53 @@ Clipperz.Crypto.PRNG.MouseRandomnessSource.prototype = MochiKit.Base.update(new
                 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;
-        },
-
-        'setRandomBitsCollector': function(aValue) {
-                this._randomBitsCollector = aValue;
-        },
-
-        'appendRandomBitToRandomBitsCollector': function(aValue) {
-                var collectedBits;
-                var numberOfRandomBitsCollected;
-                
-                numberOfRandomBitsCollected = this.numberOfRandomBitsCollected();
-                collectetBits = this.randomBitsCollector() | (aValue << numberOfRandomBitsCollected);
-                this.setRandomBitsCollector(collectetBits);
-                numberOfRandomBitsCollected ++;
-                
-                if (numberOfRandomBitsCollected == 8) {
-                        this.updateGeneratorWithValue(collectetBits);
-                        numberOfRandomBitsCollected = 0;
-                        this.setRandomBitsCollector(0);
-                }
-                
-                this.setNumberOfRandomBitsCollected(numberOfRandomBitsCollected)
-        },
+Clipperz.Crypto.PRNG.CryptoRandomRandomnessSource.prototype = MochiKit.Base.update(new Clipperz.Crypto.PRNG.RandomnessSource, {
         
-        //-------------------------------------------------------------------------
-
-        'numberOfRandomBitsCollected': function() {
-                return this._numberOfRandomBitsCollected;
+        'intervalTime': function() {
+                return this._intervalTime;
         },
 
-        'setNumberOfRandomBitsCollected': function(aValue) {
-                this._numberOfRandomBitsCollected = aValue;
+        'browserCrypto': function () {
+                return this._browserCrypto;
         },
 
         //-------------------------------------------------------------------------
 
-        'collectEntropy': function(anEvent) {
-/*
-                var mouseLocation;
-                var randomBit;
-                
-                mouseLocation = anEvent.mouse().client;
-                        
-                randomBit = ((mouseLocation.x ^ mouseLocation.y) & 0x1);
-                this.appendRandomBitToRandomBitsCollector(randomBit);
-*/
-        },
-        
-        //-------------------------------------------------------------------------
+        'collectEntropy': function() {
+                        varbytesToCollect;
 
-        'numberOfRandomBits': function() {
-                return 1;
-        },
+                if (this.boostMode() == true) {
+                        bytesToCollect = 64;
+                } else {
+                        bytesToCollect = 8;
+                }
         
-        //-------------------------------------------------------------------------
+                var randomValuesArray = new Uint8Array(bytesToCollect);
+                this.browserCrypto().getRandomValues(randomValuesArray);
+                for (var i = 0; i < randomValuesArray.length; i++) {
+                        this.updateGeneratorWithValue(randomValuesArray[i]);
+                }
 
-        'pollingFrequency': function() {
-                return 10;
+                setTimeout(this.collectEntropy, this.intervalTime());
         },
 
         //-------------------------------------------------------------------------
         __syntaxFix__: "syntax fix"
@@ -634,9 +588,9 @@ Clipperz.logWarning("Fortuna generator has not enough entropy, yet!");
                 }
         },
         
         //-------------------------------------------------------------------------
-
+/*
         'dump': function(appendToDoc) {
                 var tbl;
                 var i,c;
                 
@@ -740,9 +694,9 @@ Clipperz.logWarning("Fortuna generator has not enough entropy, yet!");
                 }
 
                 return tbl;
         },
-
+*/
         //-----------------------------------------------------------------------------
         __syntaxFix__: "syntax fix"
 });
 
@@ -783,9 +737,9 @@ 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) {
                 _clipperz_crypt_prng_defaultPRNG = new Clipperz.Crypto.PRNG.Fortuna();
@@ -815,18 +769,28 @@ Clipperz.Crypto.PRNG.defaultRandomGenerator = function() {
                 }
 
                 //.............................................................
                 //
-                        //      KeyboardRandomnessSource
+                        //      CryptoRandomRandomnessSource
                 //
                 //.............................................................
                 {
                                 varnewRandomnessSource;
+                                varbrowserCrypto;
                         
-                        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
@@ -43,8 +43,10 @@ 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) {
@@ -63,8 +65,17 @@ MochiKit.Base.update(Clipperz.Crypto.SRP, {
                 
                 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") 
@@ -137,12 +148,11 @@ 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;
                         }
                 }
@@ -166,12 +176,11 @@ Clipperz.Crypto.SRP.Connection.prototype = MochiKit.Base.update(null, {
                 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)) {
+                        //Warning: this value should be strictly greater than zero
                         this._B = aValue;
-                } else {
+                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;
                 }
         },
@@ -189,9 +198,9 @@ 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;
         },
@@ -206,9 +215,15 @@ Clipperz.Crypto.SRP.Connection.prototype = MochiKit.Base.update(null, {
                         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.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()
                                                 )
                 }
@@ -229,9 +244,22 @@ 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;
         },
@@ -240,8 +268,9 @@ Clipperz.Crypto.SRP.Connection.prototype = MochiKit.Base.update(null, {
 
         '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;
         },