Added initial hashing for Streebog GOST R 34.11-94

src/core/vendor/streebog/gostRandom.js

@@ -0,0 +1,139 @@
+/** 
+ * @file Implementation Web Crypto random generatore for GOST algorithms
+ * @version 1.76
+ * @copyright 2014-2016, Rudolf Nickolaev. All rights reserved.
+ */
+
+/*
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *    
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ * 
+ */
+
+(function (root, factory) {
+
+    /*
+     * Module imports and exports
+     * 
+     */ // <editor-fold defaultstate="collapsed">
+    if (typeof exports === 'object') {
+        module.exports = factory();
+    }
+    // </editor-fold>
+
+}(this, function () {
+
+    /**
+     * The gostCrypto provide general purpose cryptographic functionality for
+     * GOST standards including a cryptographically strong pseudo-random number 
+     * generator seeded with truly random values.
+     * 
+     * @Class GostRandom
+     * 
+     */ // <editor-fold defaultstate="collapsed">
+
+    var root = this;
+    var rootCrypto = root.crypto || root.msCrypto;
+
+    var TypeMismatchError = root.TypeMismatchError || Error;
+    var QuotaExceededError = root.QuotaExceededError || Error;
+
+    // Initialize mouse and time counters for random generator    
+    var randomRing = {
+        seed: new Uint8Array(1024),
+        getIndex: 0,
+        setIndex: 0,
+        set: function (x) {
+            if (this.setIndex >= 1024)
+                this.setIndex = 0;
+            this.seed[this.setIndex++] = x;
+        },
+        get: function () {
+            if (this.getIndex >= 1024)
+                this.getIndex = 0;
+            return this.seed[this.getIndex++];
+        }
+    };
+
+    if (typeof document !== 'undefiend') {
+        try {
+            // Mouse move event to fill random array
+            document.addEventListener('mousemove', function (e) {
+                randomRing.set((new Date().getTime() & 255) ^
+                        ((e.clientX || e.pageX) & 255) ^
+                        ((e.clientY || e.pageY) & 255));
+            }, false);
+        } catch (e) {
+        }
+
+        try {
+            // Keypress event to fill random array
+            document.addEventListener('keydown', function (e) {
+                randomRing.set((new Date().getTime() & 255) ^
+                        (e.keyCode & 255));
+            }, false);
+        } catch (e) {
+        }
+    } // </editor-fold>
+
+    function GostRandom() {
+    }
+
+    /**
+     * The getRandomValues method generates cryptographically random values. <br><br>
+     * 
+     * Random generator based on JavaScript Web Crypto random genereator 
+     * (if it is possible) or  Math.random mixed with time and parameters of 
+     * mouse and keyboard events
+     * 
+     * @memberOf GostRandom
+     * @param {(ArrayBuffer|ArrayBufferView)} array Destination buffer for random data
+     */
+    GostRandom.prototype.getRandomValues = function (array) // <editor-fold defaultstate="collapsed">
+    {
+
+        if (!array.byteLength)
+            throw new TypeMismatchError('Array is not of an integer type (Int8Array, Uint8Array, Int16Array, Uint16Array, Int32Array, or Uint32Array)');
+
+        if (array.byteLength > 65536)
+            throw new QuotaExceededError('Byte length of array can\'t be greate then 65536');
+
+        var u8 = new Uint8Array(array.buffer, array.byteOffset, array.byteLength);
+        if (rootCrypto && rootCrypto.getRandomValues) {
+            // Native window cryptographic interface
+            rootCrypto.getRandomValues(u8);
+        } else {
+            // Standard Javascript method
+            for (var i = 0, n = u8.length; i < n; i++)
+                u8[i] = Math.floor(256 * Math.random()) & 255;
+        }
+
+        // Mix bio randomizator
+        for (var i = 0, n = u8.length; i < n; i++)
+            u8[i] = u8[i] ^ randomRing.get();
+        return array;
+    }; // </editor-fold>
+
+    return GostRandom;
+
+}));