mirror of
http://git.whoc.org.uk/git/password-manager.git
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870 lines
24 KiB
JavaScript
870 lines
24 KiB
JavaScript
/*
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Copyright 2008-2011 Clipperz Srl
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This file is part of Clipperz's Javascript Crypto Library.
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Javascript Crypto Library provides web developers with an extensive
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and efficient set of cryptographic functions. The library aims to
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obtain maximum execution speed while preserving modularity and
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reusability.
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For further information about its features and functionalities please
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refer to http://www.clipperz.com
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* Javascript Crypto Library is free software: you can redistribute
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it and/or modify it under the terms of the GNU Affero General Public
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License as published by the Free Software Foundation, either version
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3 of the License, or (at your option) any later version.
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* Javascript Crypto Library is distributed in the hope that it will
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be useful, but WITHOUT ANY WARRANTY; without even the implied
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warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the GNU Affero General Public License for more details.
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* You should have received a copy of the GNU Affero General Public
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License along with Javascript Crypto Library. If not, see
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<http://www.gnu.org/licenses/>.
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*/
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try { if (typeof(Clipperz.ByteArray) == 'undefined') { throw ""; }} catch (e) {
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throw "Clipperz.Crypto.AES depends on Clipperz.ByteArray!";
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}
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// Dependency commented to avoid a circular reference
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//try { if (typeof(Clipperz.Crypto.PRNG) == 'undefined') { throw ""; }} catch (e) {
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// throw "Clipperz.Crypto.AES depends on Clipperz.Crypto.PRNG!";
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//}
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if (typeof(Clipperz.Crypto.AES) == 'undefined') { Clipperz.Crypto.AES = {}; }
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//#############################################################################
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Clipperz.Crypto.AES.DeferredExecutionContext = function(args) {
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args = args || {};
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this._key = args.key;
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this._message = args.message;
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this._result = args.message.clone();
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this._nonce = args.nonce;
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this._messageLength = this._message.length();
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this._messageArray = this._message.arrayValues();
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this._resultArray = this._result.arrayValues();
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this._nonceArray = this._nonce.arrayValues();
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this._executionStep = 0;
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// this._elaborationChunkSize = 1024; // 4096; // 16384; // 4096;
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this._elaborationChunks = 10;
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this._pauseTime = 0.02; // 0.02 // 0.2;
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return this;
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}
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Clipperz.Crypto.AES.DeferredExecutionContext.prototype = MochiKit.Base.update(null, {
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'key': function() {
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return this._key;
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},
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'message': function() {
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return this._message;
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},
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'messageLength': function() {
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return this._messageLength;
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},
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'result': function() {
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return new Clipperz.ByteArray(this.resultArray());
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},
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'nonce': function() {
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return this._nonce;
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},
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'messageArray': function() {
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return this._messageArray;
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},
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'resultArray': function() {
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return this._resultArray;
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},
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'nonceArray': function() {
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return this._nonceArray;
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},
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'elaborationChunkSize': function() {
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// return Clipperz.Crypto.AES.DeferredExecution.chunkSize;
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// return this._elaborationChunkSize;
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return (this._elaborationChunks * 1024);
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},
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'executionStep': function() {
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return this._executionStep;
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},
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'setExecutionStep': function(aValue) {
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this._executionStep = aValue;
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},
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'tuneExecutionParameters': function (anElapsedTime) {
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//var originalChunks = this._elaborationChunks;
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if (anElapsedTime > 0) {
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this._elaborationChunks = Math.round(this._elaborationChunks * ((anElapsedTime + 1000)/(anElapsedTime * 2)));
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}
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//Clipperz.log("tuneExecutionParameters - elapsedTime: " + anElapsedTime + /*originalChunks,*/ " chunks # " + this._elaborationChunks + " [" + this._executionStep + " / " + this._messageLength + "]");
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},
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'pause': function(aValue) {
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// return MochiKit.Async.wait(Clipperz.Crypto.AES.DeferredExecution.pauseTime, aValue);
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return MochiKit.Async.wait(this._pauseTime, aValue);
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},
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'isDone': function () {
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//console.log("isDone", this.executionStep(), this.messageLength());
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return (this._executionStep >= this._messageLength);
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},
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//-----------------------------------------------------------------------------
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__syntaxFix__: "syntax fix"
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});
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//#############################################################################
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Clipperz.Crypto.AES.Key = function(args) {
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args = args || {};
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this._key = args.key;
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this._keySize = args.keySize || this.key().length();
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if (this.keySize() == 128/8) {
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this._b = 176;
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this._numberOfRounds = 10;
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} else if (this.keySize() == 256/8) {
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this._b = 240;
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this._numberOfRounds = 14;
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} else {
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MochiKit.Logging.logError("AES unsupported key size: " + (this.keySize() * 8) + " bits");
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throw Clipperz.Crypto.AES.exception.UnsupportedKeySize;
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}
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this._stretchedKey = null;
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return this;
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}
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Clipperz.Crypto.AES.Key.prototype = MochiKit.Base.update(null, {
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'asString': function() {
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return "Clipperz.Crypto.AES.Key (" + this.key().toHexString() + ")";
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},
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//-----------------------------------------------------------------------------
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'key': function() {
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return this._key;
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},
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'keySize': function() {
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return this._keySize;
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},
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'b': function() {
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return this._b;
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},
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'numberOfRounds': function() {
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return this._numberOfRounds;
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},
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//=========================================================================
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'keyScheduleCore': function(aWord, aRoundConstantsIndex) {
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var result;
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var sbox;
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sbox = Clipperz.Crypto.AES.sbox();
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result = [ sbox[aWord[1]] ^ Clipperz.Crypto.AES.roundConstants()[aRoundConstantsIndex],
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sbox[aWord[2]],
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sbox[aWord[3]],
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sbox[aWord[0]] ];
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return result;
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},
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//-----------------------------------------------------------------------------
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'xorWithPreviousStretchValues': function(aKey, aWord, aPreviousWordIndex) {
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var result;
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var i,c;
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result = [];
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c = 4;
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for (i=0; i<c; i++) {
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result[i] = aWord[i] ^ aKey.byteAtIndex(aPreviousWordIndex + i);
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}
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return result;
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},
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//-----------------------------------------------------------------------------
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'sboxShakeup': function(aWord) {
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var result;
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var sbox;
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var i,c;
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result = [];
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sbox = Clipperz.Crypto.AES.sbox();
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c =4;
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for (i=0; i<c; i++) {
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result[i] = sbox[aWord[i]];
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}
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return result;
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},
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//-----------------------------------------------------------------------------
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'stretchKey': function(aKey) {
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var currentWord;
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var keyLength;
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var previousStretchIndex;
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var i,c;
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keyLength = aKey.length();
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previousStretchIndex = keyLength - this.keySize();
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currentWord = [ aKey.byteAtIndex(keyLength - 4),
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aKey.byteAtIndex(keyLength - 3),
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aKey.byteAtIndex(keyLength - 2),
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aKey.byteAtIndex(keyLength - 1) ];
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currentWord = this.keyScheduleCore(currentWord, keyLength / this.keySize());
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if (this.keySize() == 256/8) {
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c = 8;
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} else if (this.keySize() == 128/8){
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c = 4;
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}
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for (i=0; i<c; i++) {
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if (i == 4) {
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// fifth streatch word
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currentWord = this.sboxShakeup(currentWord);
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}
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currentWord = this.xorWithPreviousStretchValues(aKey, currentWord, previousStretchIndex + (i*4));
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aKey.appendBytes(currentWord);
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}
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return aKey;
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},
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//-----------------------------------------------------------------------------
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'stretchedKey': function() {
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if (this._stretchedKey == null) {
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var stretchedKey;
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stretchedKey = this.key().clone();
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while (stretchedKey.length() < this.keySize()) {
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stretchedKey.appendByte(0);
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}
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while (stretchedKey.length() < this.b()) {
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stretchedKey = this.stretchKey(stretchedKey);
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}
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this._stretchedKey = stretchedKey.split(0, this.b());
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}
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return this._stretchedKey;
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},
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//=========================================================================
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__syntaxFix__: "syntax fix"
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});
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//#############################################################################
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Clipperz.Crypto.AES.State = function(args) {
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args = args || {};
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this._data = args.block;
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this._key = args.key;
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return this;
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}
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Clipperz.Crypto.AES.State.prototype = MochiKit.Base.update(null, {
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'key': function() {
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return this._key;
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},
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//-----------------------------------------------------------------------------
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'data': function() {
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return this._data;
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},
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'setData': function(aValue) {
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this._data = aValue;
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},
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//=========================================================================
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'addRoundKey': function(aRoundNumber) {
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// each byte of the state is combined with the round key; each round key is derived from the cipher key using a key schedule.
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var data;
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var stretchedKey;
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var firstStretchedKeyIndex;
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var i,c;
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data = this.data();
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stretchedKey = this.key().stretchedKey();
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firstStretchedKeyIndex = aRoundNumber * (128/8);
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c = 128/8;
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for (i=0; i<c; i++) {
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data[i] = data[i] ^ stretchedKey.byteAtIndex(firstStretchedKeyIndex + i);
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}
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},
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//-----------------------------------------------------------------------------
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'subBytes': function() {
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// a non-linear substitution step where each byte is replaced with another according to a lookup table.
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var i,c;
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var data;
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var sbox;
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data = this.data();
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sbox = Clipperz.Crypto.AES.sbox();
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c = 16;
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for (i=0; i<c; i++) {
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data[i] = sbox[data[i]];
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}
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},
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//-----------------------------------------------------------------------------
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'shiftRows': function() {
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// a transposition step where each row of the state is shifted cyclically a certain number of steps.
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var newValue;
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var data;
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var shiftMapping;
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var i,c;
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newValue = new Array(16);
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data = this.data();
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shiftMapping = Clipperz.Crypto.AES.shiftRowMapping();
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// [0, 5, 10, 15, 4, 9, 14, 3, 8, 13, 2, 7, 12, 1, 6, 11];
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c = 16;
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for (i=0; i<c; i++) {
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newValue[i] = data[shiftMapping[i]];
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}
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for (i=0; i<c; i++) {
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data[i] = newValue[i];
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}
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},
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//-----------------------------------------------------------------------------
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/*
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'mixColumnsWithValues': function(someValues) {
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var result;
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var a;
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var i,c;
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c = 4;
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result = [];
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a = [];
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for (i=0; i<c; i++) {
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a[i] = [];
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a[i][1] = someValues[i]
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if ((a[i][1] & 0x80) == 0x80) {
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a[i][2] = (a[i][1] << 1) ^ 0x11b;
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} else {
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a[i][2] = a[i][1] << 1;
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}
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a[i][3] = a[i][2] ^ a[i][1];
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}
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for (i=0; i<c; i++) {
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var x;
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x = Clipperz.Crypto.AES.mixColumnsMatrix()[i];
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result[i] = a[0][x[0]] ^ a[1][x[1]] ^ a[2][x[2]] ^ a[3][x[3]];
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}
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return result;
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},
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'mixColumns': function() {
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// a mixing operation which operates on the columns of the state, combining the four bytes in each column using a linear transformation.
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var data;
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var i, c;
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data = this.data();
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c = 4;
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for(i=0; i<c; i++) {
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var blockIndex;
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var mixedValues;
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blockIndex = i * 4;
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mixedValues = this.mixColumnsWithValues([ data[blockIndex + 0],
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data[blockIndex + 1],
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data[blockIndex + 2],
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data[blockIndex + 3]]);
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data[blockIndex + 0] = mixedValues[0];
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data[blockIndex + 1] = mixedValues[1];
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data[blockIndex + 2] = mixedValues[2];
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data[blockIndex + 3] = mixedValues[3];
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}
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},
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*/
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'mixColumns': function() {
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// a mixing operation which operates on the columns of the state, combining the four bytes in each column using a linear transformation.
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var data;
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var i, c;
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var a_1;
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var a_2;
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a_1 = new Array(4);
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a_2 = new Array(4);
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data = this.data();
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c = 4;
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for(i=0; i<c; i++) {
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var blockIndex;
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var ii, cc;
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blockIndex = i * 4;
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cc = 4;
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for (ii=0; ii<cc; ii++) {
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var value;
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value = data[blockIndex + ii];
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a_1[ii] = value;
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a_2[ii] = (value & 0x80) ? ((value << 1) ^ 0x011b) : (value << 1);
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}
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data[blockIndex + 0] = a_2[0] ^ a_1[1] ^ a_2[1] ^ a_1[2] ^ a_1[3];
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data[blockIndex + 1] = a_1[0] ^ a_2[1] ^ a_1[2] ^ a_2[2] ^ a_1[3];
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data[blockIndex + 2] = a_1[0] ^ a_1[1] ^ a_2[2] ^ a_1[3] ^ a_2[3];
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data[blockIndex + 3] = a_1[0] ^ a_2[0] ^ a_1[1] ^ a_1[2] ^ a_2[3];
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}
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},
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//=========================================================================
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'spinRound': function(aRoundNumber) {
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this.addRoundKey(aRoundNumber);
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this.subBytes();
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this.shiftRows();
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this.mixColumns();
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},
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'spinLastRound': function() {
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this.addRoundKey(this.key().numberOfRounds() - 1);
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this.subBytes();
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this.shiftRows();
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this.addRoundKey(this.key().numberOfRounds());
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},
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//=========================================================================
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'encrypt': function() {
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var i,c;
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c = this.key().numberOfRounds() - 1;
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for (i=0; i<c; i++) {
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this.spinRound(i);
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}
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this.spinLastRound();
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},
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//=========================================================================
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__syntaxFix__: "syntax fix"
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});
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//#############################################################################
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Clipperz.Crypto.AES.VERSION = "0.1";
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Clipperz.Crypto.AES.NAME = "Clipperz.Crypto.AES";
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MochiKit.Base.update(Clipperz.Crypto.AES, {
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// http://www.cs.eku.edu/faculty/styer/460/Encrypt/JS-AES.html
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// http://en.wikipedia.org/wiki/Advanced_Encryption_Standard
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// http://en.wikipedia.org/wiki/Rijndael_key_schedule
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// http://en.wikipedia.org/wiki/Rijndael_S-box
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'__repr__': function () {
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return "[" + this.NAME + " " + this.VERSION + "]";
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},
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'toString': function () {
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return this.__repr__();
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},
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//=============================================================================
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'_sbox': null,
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'sbox': function() {
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if (Clipperz.Crypto.AES._sbox == null) {
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Clipperz.Crypto.AES._sbox = [
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0x63, 0x7c, 0x77, 0x7b, 0xf2, 0x6b, 0x6f, 0xc5, 0x30, 0x01, 0x67, 0x2b, 0xfe, 0xd7, 0xab, 0x76,
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0xca, 0x82, 0xc9, 0x7d, 0xfa, 0x59, 0x47, 0xf0, 0xad, 0xd4, 0xa2, 0xaf, 0x9c, 0xa4, 0x72, 0xc0,
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0xb7, 0xfd, 0x93, 0x26, 0x36, 0x3f, 0xf7, 0xcc, 0x34, 0xa5, 0xe5, 0xf1, 0x71, 0xd8, 0x31, 0x15,
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0x04, 0xc7, 0x23, 0xc3, 0x18, 0x96, 0x05, 0x9a, 0x07, 0x12, 0x80, 0xe2, 0xeb, 0x27, 0xb2, 0x75,
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0x09, 0x83, 0x2c, 0x1a, 0x1b, 0x6e, 0x5a, 0xa0, 0x52, 0x3b, 0xd6, 0xb3, 0x29, 0xe3, 0x2f, 0x84,
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0x53, 0xd1, 0x00, 0xed, 0x20, 0xfc, 0xb1, 0x5b, 0x6a, 0xcb, 0xbe, 0x39, 0x4a, 0x4c, 0x58, 0xcf,
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0xd0, 0xef, 0xaa, 0xfb, 0x43, 0x4d, 0x33, 0x85, 0x45, 0xf9, 0x02, 0x7f, 0x50, 0x3c, 0x9f, 0xa8,
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0x51, 0xa3, 0x40, 0x8f, 0x92, 0x9d, 0x38, 0xf5, 0xbc, 0xb6, 0xda, 0x21, 0x10, 0xff, 0xf3, 0xd2,
|
|
0xcd, 0x0c, 0x13, 0xec, 0x5f, 0x97, 0x44, 0x17, 0xc4, 0xa7, 0x7e, 0x3d, 0x64, 0x5d, 0x19, 0x73,
|
|
0x60, 0x81, 0x4f, 0xdc, 0x22, 0x2a, 0x90, 0x88, 0x46, 0xee, 0xb8, 0x14, 0xde, 0x5e, 0x0b, 0xdb,
|
|
0xe0, 0x32, 0x3a, 0x0a, 0x49, 0x06, 0x24, 0x5c, 0xc2, 0xd3, 0xac, 0x62, 0x91, 0x95, 0xe4, 0x79,
|
|
0xe7, 0xc8, 0x37, 0x6d, 0x8d, 0xd5, 0x4e, 0xa9, 0x6c, 0x56, 0xf4, 0xea, 0x65, 0x7a, 0xae, 0x08,
|
|
0xba, 0x78, 0x25, 0x2e, 0x1c, 0xa6, 0xb4, 0xc6, 0xe8, 0xdd, 0x74, 0x1f, 0x4b, 0xbd, 0x8b, 0x8a,
|
|
0x70, 0x3e, 0xb5, 0x66, 0x48, 0x03, 0xf6, 0x0e, 0x61, 0x35, 0x57, 0xb9, 0x86, 0xc1, 0x1d, 0x9e,
|
|
0xe1, 0xf8, 0x98, 0x11, 0x69, 0xd9, 0x8e, 0x94, 0x9b, 0x1e, 0x87, 0xe9, 0xce, 0x55, 0x28, 0xdf,
|
|
0x8c, 0xa1, 0x89, 0x0d, 0xbf, 0xe6, 0x42, 0x68, 0x41, 0x99, 0x2d, 0x0f, 0xb0, 0x54, 0xbb, 0x16
|
|
];
|
|
}
|
|
|
|
return Clipperz.Crypto.AES._sbox;
|
|
},
|
|
|
|
//-----------------------------------------------------------------------------
|
|
//
|
|
// 0 4 8 12 0 4 8 12
|
|
// 1 5 9 13 => 5 9 13 1
|
|
// 2 6 10 14 10 14 2 6
|
|
// 3 7 11 15 15 3 7 11
|
|
//
|
|
'_shiftRowMapping': null,
|
|
'shiftRowMapping': function() {
|
|
if (Clipperz.Crypto.AES._shiftRowMapping == null) {
|
|
Clipperz.Crypto.AES._shiftRowMapping = [0, 5, 10, 15, 4, 9, 14, 3, 8, 13, 2, 7, 12, 1, 6, 11];
|
|
}
|
|
|
|
return Clipperz.Crypto.AES._shiftRowMapping;
|
|
},
|
|
|
|
//-----------------------------------------------------------------------------
|
|
|
|
'_mixColumnsMatrix': null,
|
|
'mixColumnsMatrix': function() {
|
|
if (Clipperz.Crypto.AES._mixColumnsMatrix == null) {
|
|
Clipperz.Crypto.AES._mixColumnsMatrix = [ [2, 3, 1 ,1],
|
|
[1, 2, 3, 1],
|
|
[1, 1, 2, 3],
|
|
[3, 1, 1, 2] ];
|
|
}
|
|
|
|
return Clipperz.Crypto.AES._mixColumnsMatrix;
|
|
},
|
|
|
|
'_roundConstants': null,
|
|
'roundConstants': function() {
|
|
if (Clipperz.Crypto.AES._roundConstants == null) {
|
|
Clipperz.Crypto.AES._roundConstants = [ , 1, 2, 4, 8, 16, 32, 64, 128, 27, 54, 108, 216, 171, 77, 154];
|
|
// Clipperz.Crypto.AES._roundConstants = [ , 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36, 0x6c, 0xd8, 0xab, 0x4d, 0x9a];
|
|
}
|
|
|
|
return Clipperz.Crypto.AES._roundConstants;
|
|
},
|
|
|
|
//=============================================================================
|
|
|
|
'incrementNonce': function(aNonce) {
|
|
//Clipperz.Profile.start("Clipperz.Crypto.AES.incrementNonce");
|
|
var i;
|
|
var done;
|
|
|
|
done = false;
|
|
i = aNonce.length - 1;
|
|
|
|
while ((i>=0) && (done == false)) {
|
|
var currentByteValue;
|
|
|
|
currentByteValue = aNonce[i];
|
|
|
|
if (currentByteValue == 0xff) {
|
|
aNonce[i] = 0;
|
|
if (i>= 0) {
|
|
i --;
|
|
} else {
|
|
done = true;
|
|
}
|
|
} else {
|
|
aNonce[i] = currentByteValue + 1;
|
|
done = true;
|
|
}
|
|
}
|
|
//Clipperz.Profile.stop("Clipperz.Crypto.AES.incrementNonce");
|
|
},
|
|
|
|
//-----------------------------------------------------------------------------
|
|
|
|
'encryptBlock': function(aKey, aBlock) {
|
|
var result;
|
|
var state;
|
|
|
|
state = new Clipperz.Crypto.AES.State({block:aBlock, key:aKey});
|
|
//is(state.data(), 'before');
|
|
state.encrypt();
|
|
result = state.data();
|
|
|
|
return result;
|
|
},
|
|
|
|
//-----------------------------------------------------------------------------
|
|
|
|
'encryptBlocks': function(aKey, aMessage, aNonce) {
|
|
var result;
|
|
var nonce;
|
|
var self;
|
|
var messageIndex;
|
|
var messageLength;
|
|
var blockSize;
|
|
|
|
self = Clipperz.Crypto.AES;
|
|
blockSize = 128/8;
|
|
messageLength = aMessage.length;
|
|
nonce = aNonce;
|
|
|
|
result = aMessage;
|
|
messageIndex = 0;
|
|
while (messageIndex < messageLength) {
|
|
var encryptedBlock;
|
|
var i,c;
|
|
|
|
self.incrementNonce(nonce);
|
|
encryptedBlock = self.encryptBlock(aKey, nonce);
|
|
|
|
if ((messageLength - messageIndex) > blockSize) {
|
|
c = blockSize;
|
|
} else {
|
|
c = messageLength - messageIndex;
|
|
}
|
|
|
|
for (i=0; i<c; i++) {
|
|
result[messageIndex + i] = result[messageIndex + i] ^ encryptedBlock[i];
|
|
}
|
|
|
|
messageIndex += blockSize;
|
|
}
|
|
|
|
return result;
|
|
},
|
|
|
|
//-----------------------------------------------------------------------------
|
|
|
|
'encrypt': function(aKey, someData, aNonce) {
|
|
var result;
|
|
var nonce;
|
|
var encryptedData;
|
|
var key;
|
|
|
|
key = new Clipperz.Crypto.AES.Key({key:aKey});
|
|
nonce = aNonce ? aNonce.clone() : Clipperz.Crypto.PRNG.defaultRandomGenerator().getRandomBytes(128/8);
|
|
|
|
encryptedData = Clipperz.Crypto.AES.encryptBlocks(key, someData.arrayValues(), nonce.arrayValues());
|
|
|
|
result = nonce.appendBytes(encryptedData);
|
|
|
|
return result;
|
|
},
|
|
|
|
//-----------------------------------------------------------------------------
|
|
|
|
'decrypt': function(aKey, someData) {
|
|
var result;
|
|
var nonce;
|
|
var encryptedData;
|
|
var decryptedData;
|
|
var dataIterator;
|
|
var key;
|
|
|
|
key = new Clipperz.Crypto.AES.Key({key:aKey});
|
|
|
|
encryptedData = someData.arrayValues();
|
|
nonce = encryptedData.slice(0, (128/8));
|
|
encryptedData = encryptedData.slice(128/8);
|
|
decryptedData = Clipperz.Crypto.AES.encryptBlocks(key, encryptedData, nonce);
|
|
|
|
result = new Clipperz.ByteArray(decryptedData);
|
|
|
|
return result;
|
|
},
|
|
|
|
//=============================================================================
|
|
|
|
'deferredEncryptExecutionChunk': function(anExecutionContext) {
|
|
var result;
|
|
var nonce;
|
|
var self;
|
|
var messageIndex;
|
|
var messageLength;
|
|
var blockSize;
|
|
var executionLimit;
|
|
var startTime, endTime;
|
|
|
|
self = Clipperz.Crypto.AES;
|
|
startTime = new Date();
|
|
blockSize = 128/8;
|
|
messageLength = anExecutionContext.messageArray().length;
|
|
nonce = anExecutionContext.nonceArray();
|
|
result = anExecutionContext.resultArray();
|
|
|
|
messageIndex = anExecutionContext.executionStep();
|
|
executionLimit = messageIndex + anExecutionContext.elaborationChunkSize();
|
|
executionLimit = Math.min(executionLimit, messageLength);
|
|
|
|
while (messageIndex < executionLimit) {
|
|
var encryptedBlock;
|
|
var i,c;
|
|
|
|
self.incrementNonce(nonce);
|
|
encryptedBlock = self.encryptBlock(anExecutionContext.key(), nonce);
|
|
|
|
if ((executionLimit - messageIndex) > blockSize) {
|
|
c = blockSize;
|
|
} else {
|
|
c = executionLimit - messageIndex;
|
|
}
|
|
|
|
for (i=0; i<c; i++) {
|
|
result[messageIndex + i] = result[messageIndex + i] ^ encryptedBlock[i];
|
|
}
|
|
|
|
messageIndex += blockSize;
|
|
}
|
|
anExecutionContext.setExecutionStep(messageIndex);
|
|
endTime = new Date();
|
|
anExecutionContext.tuneExecutionParameters(endTime - startTime);
|
|
|
|
return anExecutionContext;
|
|
},
|
|
|
|
//-----------------------------------------------------------------------------
|
|
/*
|
|
'deferredEncryptBlocks': function(anExecutionContext) {
|
|
var deferredResult;
|
|
var messageSize;
|
|
var i,c;
|
|
|
|
messageSize = anExecutionContext.messageLength();
|
|
|
|
deferredResult = new Clipperz.Async.Deferred("AES.deferredEncryptBloks");
|
|
|
|
c = Math.ceil(messageSize / anExecutionContext.elaborationChunkSize());
|
|
for (i=0; i<c; i++) {
|
|
deferredResult.addCallback(Clipperz.Crypto.AES.deferredEncryptExecutionChunk);
|
|
deferredResult.addMethod(anExecutionContext, 'pause');
|
|
}
|
|
|
|
deferredResult.callback(anExecutionContext);
|
|
|
|
return deferredResult;
|
|
},
|
|
*/
|
|
|
|
'deferredEncryptBlocks': function(anExecutionContext) {
|
|
var deferredResult;
|
|
|
|
if (! anExecutionContext.isDone()) {
|
|
deferredResult = Clipperz.Async.callbacks("Clipperz.Crypto.AES.deferredEncryptBloks", [
|
|
Clipperz.Crypto.AES.deferredEncryptExecutionChunk,
|
|
MochiKit.Base.method(anExecutionContext, 'pause'),
|
|
Clipperz.Crypto.AES.deferredEncryptBlocks
|
|
], {trace:false}, anExecutionContext);
|
|
} else {
|
|
deferredResult = MochiKit.Async.succeed(anExecutionContext);
|
|
}
|
|
|
|
return deferredResult;
|
|
},
|
|
|
|
//-----------------------------------------------------------------------------
|
|
|
|
'deferredEncrypt': function(aKey, someData, aNonce) {
|
|
var deferredResult;
|
|
var executionContext;
|
|
var result;
|
|
var nonce;
|
|
var key;
|
|
|
|
key = new Clipperz.Crypto.AES.Key({key:aKey});
|
|
nonce = aNonce ? aNonce.clone() : Clipperz.Crypto.PRNG.defaultRandomGenerator().getRandomBytes(128/8);
|
|
|
|
executionContext = new Clipperz.Crypto.AES.DeferredExecutionContext({key:key, message:someData, nonce:nonce});
|
|
|
|
deferredResult = new Clipperz.Async.Deferred("AES.deferredEncrypt");
|
|
//deferredResult.addCallback(function (aValue) { console.log(">>> deferredEncrypt"); return aValue; });
|
|
deferredResult.addCallback(Clipperz.Crypto.AES.deferredEncryptBlocks);
|
|
deferredResult.addCallback(function(anExecutionContext) {
|
|
var result;
|
|
|
|
result = anExecutionContext.nonce().clone();
|
|
result.appendBytes(anExecutionContext.resultArray());
|
|
|
|
return result;
|
|
});
|
|
//deferredResult.addCallback(function (aValue) { console.log("<<< deferredEncrypt"); return aValue; });
|
|
deferredResult.callback(executionContext)
|
|
|
|
return deferredResult;
|
|
},
|
|
|
|
//-----------------------------------------------------------------------------
|
|
|
|
'deferredDecrypt': function(aKey, someData) {
|
|
var deferredResult
|
|
var nonce;
|
|
var message;
|
|
var key;
|
|
|
|
key = new Clipperz.Crypto.AES.Key({key:aKey});
|
|
nonce = someData.split(0, (128/8));
|
|
message = someData.split(128/8);
|
|
executionContext = new Clipperz.Crypto.AES.DeferredExecutionContext({key:key, message:message, nonce:nonce});
|
|
|
|
deferredResult = new Clipperz.Async.Deferred("AES.deferredDecrypt");
|
|
//deferredResult.addCallback(function (aValue) { console.log(">>> deferredDecrypt"); return aValue; });
|
|
deferredResult.addCallback(Clipperz.Crypto.AES.deferredEncryptBlocks);
|
|
deferredResult.addCallback(function(anExecutionContext) {
|
|
return anExecutionContext.result();
|
|
});
|
|
//deferredResult.addCallback(function (aValue) { console.log("<<< deferredDecrypt"); return aValue; });
|
|
deferredResult.callback(executionContext);
|
|
|
|
return deferredResult;
|
|
},
|
|
|
|
//-----------------------------------------------------------------------------
|
|
__syntaxFix__: "syntax fix"
|
|
|
|
});
|
|
|
|
//#############################################################################
|
|
|
|
//Clipperz.Crypto.AES.DeferredExecution = {
|
|
// 'chunkSize': 16384, // 4096, // 1024 4096 8192 16384 32768;
|
|
// 'pauseTime': 0.02 // 0.2
|
|
//}
|
|
|
|
Clipperz.Crypto.AES.exception = {
|
|
'UnsupportedKeySize': new MochiKit.Base.NamedError("Clipperz.Crypto.AES.exception.UnsupportedKeySize")
|
|
};
|