prototype invite app

www/common/curve.js

@@ -0,0 +1,37 @@
+define([
+    '/bower_components/tweetnacl/nacl-fast.min.js',
+], function () {
+    var Nacl = window.nacl;
+
+    var Curve = {};
+
+    // nacl.box(message, nonce, theirPublicKey, mySecretKey)
+    Curve.encrypt = function (message, theirPub, mySecret) {
+        var buffer = Nacl.util.decodeUTF8(message);
+
+        var nonce = Nacl.randomBytes(24);
+
+        var box = Nacl.box(buffer, nonce, theirPub, mySecret);
+
+        return [Nacl.util.encodeBase64(nonce), Nacl.util.encodeBase64(box)].join('|');
+    };
+
+    // nacl.box.open(box, nonce, theirPublicKey, mySecretKey)
+    Curve.decrypt = function (packed, theirPub, mySecret) {
+        var unpacked = packed.split('|');
+        var nonce = Nacl.util.decodeBase64(unpacked[0]);
+
+        var box = Nacl.util.decodeBase64(unpacked[1]);
+
+        var message = Nacl.box.open(box, nonce, theirPub, mySecret);
+
+        return Nacl.util.encodeUTF8(message);
+    };
+
+    Curve.createEncryptor = function () {
+        console.log("PEWPEW");
+        throw new Error("E_NOT_IMPL");
+    };
+
+    return Curve;
+});