1// Copyright 2013 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#ifndef MEDIA_CDM_JSON_WEB_KEY_H_
6#define MEDIA_CDM_JSON_WEB_KEY_H_
7
8#include <string>
9#include <utility>
10#include <vector>
11
12#include "base/basictypes.h"
13#include "media/base/media_export.h"
14
15namespace media {
16
17// A JSON Web Key Set looks like the following in JSON:
18//   { "keys": [ JWK1, JWK2, ... ] }
19// A symmetric keys JWK looks like the following in JSON:
20//   { "kty":"oct",
21//     "kid":"AQIDBAUGBwgJCgsMDQ4PEA",
22//     "k":"FBUWFxgZGhscHR4fICEiIw" }
23// There may be other properties specified, but they are ignored.
24// Ref: http://tools.ietf.org/html/draft-ietf-jose-json-web-key and:
25// http://tools.ietf.org/html/draft-jones-jose-json-private-and-symmetric-key
26//
27// For EME WD, both 'kid' and 'k' are base64 encoded strings, without trailing
28// padding.
29
30// Vector of [key_id, key_value] pairs. Values are raw binary data, stored in
31// strings for convenience.
32typedef std::pair<std::string, std::string> KeyIdAndKeyPair;
33typedef std::vector<KeyIdAndKeyPair> KeyIdAndKeyPairs;
34
35// Converts a single |key|, |key_id| pair to a JSON Web Key Set.
36MEDIA_EXPORT std::string GenerateJWKSet(const uint8* key, int key_length,
37                                        const uint8* key_id, int key_id_length);
38
39// Extracts the JSON Web Keys from a JSON Web Key Set. If |input| looks like
40// a valid JWK Set, then true is returned and |keys| is updated to contain
41// the list of keys found. Otherwise return false.
42MEDIA_EXPORT bool ExtractKeysFromJWKSet(const std::string& jwk_set,
43                                        KeyIdAndKeyPairs* keys);
44
45}  // namespace media
46
47#endif  // MEDIA_CDM_JSON_WEB_KEY_H_
48