-rw-r--r-- | frontend/gamma/js/Clipperz/Crypto/PRNG.js | 124 | ||||
-rw-r--r-- | frontend/gamma/js/Clipperz/Crypto/SRP.js | 47 | ||||
-rw-r--r-- | frontend/gamma/js/Clipperz/PM/Proxy/Proxy.Offline.DataStore.js | 27 |
3 files changed, 103 insertions, 95 deletions
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) }, @@ -286,99 +282,57 @@ 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; - }, - - '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() { + var bytesToCollect; - '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" }); @@ -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)) { + // 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; } }, //------------------------------------------------------------------------- @@ -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; }, //------------------------------------------------------------------------- @@ -204,13 +213,19 @@ 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.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 @@ -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'; |