Extension API enterprise.platformKeys.

chrome/renderer/resources/extensions/enterprise_platform_keys/key.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');
+
+/**
+ * Enum of possible key types (subset of WebCrypto.KeyType).
+ * @enum {string}
+ */
+var KeyType = {
+  public: 'public',
+  private: 'private'
+};
+
+/**
+ * Enum of possible key usages (subset of WebCrypto.KeyUsage).
+ * @enum {string}
+ */
+var KeyUsage = {
+  sign: 'sign',
+  verify: 'verify'
+};
+
+/**
+ * Implementation of WebCrypto.Key used in enterprise.platformKeys.
+ * @param {KeyType} type The type of the new key.
+ * @param {ArrayBuffer} publicKeySpki The Subject Public Key Info in DER
+ *   encoding.
+ * @param {KeyAlgorithm} algorithm The algorithm identifier.
+ * @param {KeyUsage[]} usages The allowed key usages.
+ * @param {boolean} extractable Whether the key is extractable.
+ * @constructor
+ */
+var KeyImpl = function(type, publicKeySpki, algorithm, usages, extractable) {
+  this.type = type;
+  this.spki = publicKeySpki;
+  this.algorithm = algorithm;
+  this.usages = usages;
+  this.extractable = extractable;
+};
+
+var Key =
+    utils.expose('Key',
+                 KeyImpl,
+                 {readonly:['extractable', 'type', 'algorithm', 'usages']});
+
+/**
+ * Returns |key|'s Subject Public Key Info. Throws an exception if |key| is not
+ * a valid Key object.
+ * @param {Key} key
+ * @return {ArrayBuffer} The Subject Public Key Info in DER encoding of |key|.
+ */
+function getSpki(key) {
+  if (!privates(key))
+    throw new Error('Invalid key object.');
+  var keyImpl = privates(key).impl;
+  if (!keyImpl || !keyImpl.spki)
+    throw new Error('Invalid key object.');
+  return keyImpl.spki;
+}
+
+exports.Key = Key;
+exports.KeyType = KeyType;
+exports.KeyUsage = KeyUsage;
+exports.getSpki = getSpki;