Extension API enterprise.platformKeys.

chrome/renderer/resources/extensions/enterprise_platform_keys/key_pair.js

+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+var utils = require('utils');
+var intersect = require('enterprise.platformKeys.utils').intersect;
+var keyModule = require('enterprise.platformKeys.Key');
+var Key = keyModule.Key;
+var KeyType = keyModule.KeyType;
+var KeyUsage = keyModule.KeyUsage;
+
+/**
+ * Implementation of WebCrypto.KeyPair used in enterprise.platformKeys.
+ * @param {ArrayBuffer} publicKeySpki The Subject Public Key Info in DER
+ * encoding.
+ * @param {KeyAlgorithm} algorithm The algorithm identifier.
+ * @param {KeyUsage[]} usages The allowed key usages.
+ * @constructor
+ */
+var KeyPairImpl = function(publicKeySpki, algorithm, usages) {
+  this.publicKey = new Key(KeyType.public,
+                           publicKeySpki,
+                           algorithm,
+                           intersect([KeyUsage.verify], usages),
+                           true /* extractable */);
+  this.privateKey = new Key(KeyType.private,
+                            publicKeySpki,
+                            algorithm,
+                            intersect([KeyUsage.sign], usages),
+                            false /* not extractable */);
+};
+
+exports.KeyPair = utils.expose('KeyPair',
+                               KeyPairImpl,
+                               {readonly:['publicKey', 'privateKey']});