Home | History | Annotate | Download | only in enterprise_platform_keys 
      1 // Copyright 2014 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 var utils = require('utils');
      6 
      7 /**
      8  * Enum of possible key types (subset of WebCrypto.KeyType).
      9  * @enum {string}
     10  */
     11 var KeyType = {
     12   public: 'public',
     13   private: 'private'
     14 };
     15 
     16 /**
     17  * Enum of possible key usages (subset of WebCrypto.KeyUsage).
     18  * @enum {string}
     19  */
     20 var KeyUsage = {
     21   sign: 'sign',
     22   verify: 'verify'
     23 };
     24 
     25 /**
     26  * Implementation of WebCrypto.Key used in enterprise.platformKeys.
     27  * @param {KeyType} type The type of the new key.
     28  * @param {ArrayBuffer} publicKeySpki The Subject Public Key Info in DER
     29  *   encoding.
     30  * @param {KeyAlgorithm} algorithm The algorithm identifier.
     31  * @param {KeyUsage[]} usages The allowed key usages.
     32  * @param {boolean} extractable Whether the key is extractable.
     33  * @constructor
     34  */
     35 var KeyImpl = function(type, publicKeySpki, algorithm, usages, extractable) {
     36   this.type = type;
     37   this.spki = publicKeySpki;
     38   this.algorithm = algorithm;
     39   this.usages = usages;
     40   this.extractable = extractable;
     41 };
     42 
     43 var KeyBase = function() {};
     44 
     45 Object.defineProperty(KeyBase.prototype, 'algorithm', {
     46   enumerable: true,
     47   get: function() {
     48     return utils.deepCopy(privates(this).impl.algorithm);
     49   }
     50 });
     51 
     52 var Key = utils.expose(
     53     'Key',
     54     KeyImpl,
     55     {superclass: KeyBase, readonly: ['extractable', 'type', 'usages']});
     56 
     57 /**
     58  * Returns |key|'s Subject Public Key Info. Throws an exception if |key| is not
     59  * a valid Key object.
     60  * @param {Key} key
     61  * @return {ArrayBuffer} The Subject Public Key Info in DER encoding of |key|.
     62  */
     63 function getSpki(key) {
     64   if (!privates(key))
     65     throw new Error('Invalid key object.');
     66   var keyImpl = privates(key).impl;
     67   if (!keyImpl || !keyImpl.spki)
     68     throw new Error('Invalid key object.');
     69   return keyImpl.spki;
     70 }
     71 
     72 exports.Key = Key;
     73 exports.KeyType = KeyType;
     74 exports.KeyUsage = KeyUsage;
     75 exports.getSpki = getSpki;
     76