2 Copyright (C) 2013-2018 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
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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>
49 class decrypted_kdm_test;
53 class DecryptedKDMKey;
55 class CertificateChain;
59 /** @class DecryptedKDM
60 * @brief A decrypted KDM.
62 * This is a KDM that has either been decrypted by a target private key, or one which
63 * has been created (by some other means) ready for encryption later.
65 * A DecryptedKDM object can be created either from an EncryptedKDM and private key file,
66 * or from the details of the assets that the KDM should protect.
71 /** @param kdm Encrypted KDM.
72 * @param private_key Private key as a PEM-format string.
74 DecryptedKDM (EncryptedKDM const & kdm, std::string private_key);
76 /** Create an empty DecryptedKDM. After creation you must call
77 * add_key() to add each key that you want in the KDM.
79 * @param not_valid_before Start time for the KDM.
80 * @param not_valid_after End time for the KDM.
83 LocalTime not_valid_before,
84 LocalTime not_valid_after,
85 std::string annotation_text,
86 std::string content_title_text,
87 std::string issue_date
90 /** Construct a DecryptedKDM containing a given set of keys.
91 * @param keys Keys to be included in the DecryptedKDM.
95 std::map<boost::shared_ptr<const ReelMXF>, Key> keys,
96 LocalTime not_valid_before,
97 LocalTime not_valid_after,
98 std::string annotation_text,
99 std::string content_title_text,
100 std::string issue_date
103 /** Create a DecryptedKDM by taking a CPL and setting up to encrypt each of its
104 * assets with the same symmetric key.
106 * @param cpl CPL that the keys are for.
107 * @param key Key that was used to encrypt the assets.
108 * @param not_valid_before Start time for the KDM.
109 * @param not_valid_after End time for the KDM.
112 boost::shared_ptr<const CPL> cpl,
114 LocalTime not_valid_before,
115 LocalTime not_valid_after,
116 std::string annotation_text,
117 std::string content_title_text,
118 std::string issue_date
121 /** Encrypt this KDM's keys and sign the whole KDM.
122 * @param signer Chain to sign with.
123 * @param recipient Certificate of the projector/server which should receive this KDM's keys.
124 * @param trusted_devices Thumbprints of extra trusted devices which should be written to the KDM (recipient will be written
125 * as a trusted device automatically and does not need to be included in this list).
126 * @param formulation Formulation to use for the encrypted KDM.
127 * @param disable_forensic_marking_picture true to disable forensic marking of picture.
128 * @param disable_forensic_marking_audio if not set, don't disable forensic marking of audio. If set to 0,
129 * disable all forensic marking; if set above 0, disable forensic marking above that channel.
130 * @return Encrypted KDM.
132 EncryptedKDM encrypt (
133 boost::shared_ptr<const CertificateChain> signer,
134 Certificate recipient,
135 std::vector<std::string> trusted_devices,
136 Formulation formulation,
137 bool disable_forensic_marking_picture,
138 boost::optional<int> disable_forensic_marking_audio
141 void add_key (boost::optional<std::string> type, std::string key_id, Key key, std::string cpl_id, Standard standard);
142 void add_key (DecryptedKDMKey key);
144 /** @return This KDM's (decrypted) keys, which could be used to decrypt assets. */
145 std::list<DecryptedKDMKey> keys () const {
149 boost::optional<std::string> annotation_text () const {
150 return _annotation_text;
153 std::string content_title_text () const {
154 return _content_title_text;
157 std::string issue_date () const {
163 friend class ::decrypted_kdm_test;
165 static void put_uuid (uint8_t ** d, std::string id);
166 static std::string get_uuid (unsigned char ** p);
168 LocalTime _not_valid_before;
169 LocalTime _not_valid_after;
170 boost::optional<std::string> _annotation_text;
171 std::string _content_title_text;
172 std::string _issue_date;
173 std::list<DecryptedKDMKey> _keys;