Untested Code

lib-typedarrays.js

@@ -0,0 +1,62 @@
+/*
+CryptoJS v3.1.2
+code.google.com/p/crypto-js
+(c) 2009-2013 by Jeff Mott. All rights reserved.
+code.google.com/p/crypto-js/wiki/License
+*/
+(function () {
+    // Check if typed arrays are supported
+    if (typeof ArrayBuffer != 'function') {
+        return;
+    }
+
+    // Shortcuts
+    var C = CryptoJS;
+    var C_lib = C.lib;
+    var WordArray = C_lib.WordArray;
+
+    // Reference original init
+    var superInit = WordArray.init;
+
+    // Augment WordArray.init to handle typed arrays
+    var subInit = WordArray.init = function (typedArray) {
+        // Convert buffers to uint8
+        if (typedArray instanceof ArrayBuffer) {
+            typedArray = new Uint8Array(typedArray);
+        }
+
+        // Convert other array views to uint8
+        if (
+            typedArray instanceof Int8Array ||
+            typedArray instanceof Uint8ClampedArray ||
+            typedArray instanceof Int16Array ||
+            typedArray instanceof Uint16Array ||
+            typedArray instanceof Int32Array ||
+            typedArray instanceof Uint32Array ||
+            typedArray instanceof Float32Array ||
+            typedArray instanceof Float64Array
+        ) {
+            typedArray = new Uint8Array(typedArray.buffer, typedArray.byteOffset, typedArray.byteLength);
+        }
+
+        // Handle Uint8Array
+        if (typedArray instanceof Uint8Array) {
+            // Shortcut
+            var typedArrayByteLength = typedArray.byteLength;
+
+            // Extract bytes
+            var words = [];
+            for (var i = 0; i < typedArrayByteLength; i++) {
+                words[i >>> 2] |= typedArray[i] << (24 - (i % 4) * 8);
+            }
+
+            // Initialize this word array
+            superInit.call(this, words, typedArrayByteLength);
+        } else {
+            // Else call normal init
+            superInit.apply(this, arguments);
+        }
+    };
+
+    subInit.prototype = WordArray;
+}());