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// 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 KeyBase = function() {};
Object.defineProperty(KeyBase.prototype, 'algorithm', {
enumerable: true,
get: function() {
return utils.deepCopy(privates(this).impl.algorithm);
}
});
var Key = utils.expose(
'Key',
KeyImpl,
{superclass: KeyBase, readonly: ['extractable', 'type', '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;
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