2 Copyright (C) 2013-2016 Carl Hetherington <cth@carlh.net>
4 This file is part of libdcp.
6 libdcp is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 libdcp is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with libdcp. If not, see <http://www.gnu.org/licenses/>.
19 In addition, as a special exception, the copyright holders give
20 permission to link the code of portions of this program with the
21 OpenSSL library under certain conditions as described in each
22 individual source file, and distribute linked combinations
25 You must obey the GNU General Public License in all respects
26 for all of the code used other than OpenSSL. If you modify
27 file(s) with this exception, you may extend this exception to your
28 version of the file(s), but you are not obligated to do so. If you
29 do not wish to do so, delete this exception statement from your
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34 #ifndef LIBDCP_DECRYPTED_KDM_H
35 #define LIBDCP_DECRYPTED_KDM_H
37 /** @file src/decrypted_kdm.h
38 * @brief DecryptedKDM class.
42 #include "local_time.h"
43 #include "decrypted_kdm_key.h"
45 #include "certificate.h"
46 #include <boost/filesystem.hpp>
47 #include <boost/optional.hpp>
51 class DecryptedKDMKey;
53 class CertificateChain;
56 /** @class DecryptedKDM
57 * @brief A decrypted KDM.
59 * This is a KDM that has either been decrypted by a target private key, or one which
60 * has been created (by some other means) ready for encryption later.
62 * A DecryptedKDM object can be created either from an EncryptedKDM and private key file,
63 * or from the details of the assets that the KDM should protect.
68 /** @param kdm Encrypted KDM.
69 * @param private_key Private key as a PEM-format string.
71 DecryptedKDM (EncryptedKDM const & kdm, std::string private_key);
73 /** Create an empty DecryptedKDM. After creation you must call
74 * add_key() to add each key that you want in the KDM.
76 * @param not_valid_before Start time for the KDM.
77 * @param not_valid_after End time for the KDM.
80 LocalTime not_valid_before,
81 LocalTime not_valid_after,
82 std::string annotation_text,
83 std::string content_title_text,
84 std::string issue_date
87 /** Create a DecryptedKDM by taking a CPL and setting up to encrypt each of its
88 * assets with the same symmetric key.
90 * @param cpl CPL that the keys are for.
91 * @param key Key that was used to encrypt the assets.
92 * @param not_valid_before Start time for the KDM.
93 * @param not_valid_after End time for the KDM.
96 boost::shared_ptr<const CPL> cpl,
98 LocalTime not_valid_before,
99 LocalTime not_valid_after,
100 std::string annotation_text,
101 std::string content_title_text,
102 std::string issue_date
105 /** Encrypt this KDM's keys and sign the whole KDM.
106 * @param signer Chain to sign with.
107 * @param recipient Certificate of the projector/server which should receive this KDM's keys.
108 * @param trusted_devices Extra trusted devices which should be written to the KDM (recipient will be written
109 * as a trusted device automatically and does not need to be included in this list).
110 * @param formulation Formulation to use for the encrypted KDM.
111 * @return Encrypted KDM.
113 EncryptedKDM encrypt (
114 boost::shared_ptr<const CertificateChain> signer,
115 Certificate recipient,
116 std::vector<Certificate> trusted_devices,
117 Formulation formulation
120 void add_key (std::string type, std::string key_id, Key key, std::string cpl_id);
121 void add_key (DecryptedKDMKey key);
123 /** @return This KDM's (decrypted) keys, which could be used to decrypt assets. */
124 std::list<DecryptedKDMKey> keys () const {
128 boost::optional<std::string> annotation_text () const {
129 return _annotation_text;
132 std::string content_title_text () const {
133 return _content_title_text;
136 std::string issue_date () const {
141 LocalTime _not_valid_before;
142 LocalTime _not_valid_after;
143 boost::optional<std::string> _annotation_text;
144 std::string _content_title_text;
145 std::string _issue_date;
146 std::list<DecryptedKDMKey> _keys;