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/*
Copyright (C) 2013-2015 Carl Hetherington <cth@carlh.net>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef LIBDCP_DECRYPTED_KDM_H
#define LIBDCP_DECRYPTED_KDM_H
/** @file src/decrypted_kdm.h
* @brief DecryptedKDM class.
*/
#include "key.h"
#include "local_time.h"
#include "decrypted_kdm_key.h"
#include "types.h"
#include "certificate.h"
#include <boost/filesystem.hpp>
namespace dcp {
class DecryptedKDMKey;
class EncryptedKDM;
class CertificateChain;
class CPL;
/** @class DecryptedKDM
* @brief A decrypted KDM.
*
* This is a KDM that has either been decrypted by a target private key, or one which
* has been created (by some other means) ready for encryption later.
*
* A DecryptedKDM object can be created either from an EncryptedKDM and private key file,
* or from the details of the assets that the KDM should protect.
*/
class DecryptedKDM
{
public:
/** @param kdm Encrypted KDM.
* @param private_key Private key as a PEM-format string.
*/
DecryptedKDM (EncryptedKDM const & kdm, std::string private_key);
/** Create an empty DecryptedKDM. After creation you must call
* add_key() to add each key that you want in the KDM.
*
* @param not_valid_before Start time for the KDM.
* @param not_valid_after End time for the KDM.
*/
DecryptedKDM (
LocalTime not_valid_before,
LocalTime not_valid_after,
std::string annotation_text,
std::string content_title_text,
std::string issue_date
);
/** Create a DecryptedKDM by taking a CPL and setting up to encrypt each of its
* assets with the same symmetric key.
*
* @param cpl CPL that the keys are for.
* @param key Key that was used to encrypt the assets.
* @param not_valid_before Start time for the KDM.
* @param not_valid_after End time for the KDM.
*/
DecryptedKDM (
boost::shared_ptr<const CPL> cpl,
Key key,
LocalTime not_valid_before,
LocalTime not_valid_after,
std::string annotation_text,
std::string content_title_text,
std::string issue_date
);
/** Encrypt this KDM's keys and sign the whole KDM.
* @param signer Chain to sign with.
* @param recipient Certificate of the projector/server which should receive this KDM's keys.
* @param trusted_devices Extra trusted devices which should be written to the KDM (recipient will be written
* as a trusted device automatically and does not need to be included in this list).
* @param formulation Formulation to use for the encrypted KDM.
* @return Encrypted KDM.
*/
EncryptedKDM encrypt (
boost::shared_ptr<const CertificateChain> signer,
Certificate recipient,
std::vector<Certificate> trusted_devices,
Formulation formulation
) const;
void add_key (std::string type, std::string key_id, Key key, std::string cpl_id);
void add_key (DecryptedKDMKey key);
/** @return This KDM's (decrypted) keys, which could be used to decrypt assets. */
std::list<DecryptedKDMKey> keys () const {
return _keys;
}
std::string annotation_text () const {
return _annotation_text;
}
std::string content_title_text () const {
return _content_title_text;
}
std::string issue_date () const {
return _issue_date;
}
private:
LocalTime _not_valid_before;
LocalTime _not_valid_after;
std::string _annotation_text;
std::string _content_title_text;
std::string _issue_date;
std::list<DecryptedKDMKey> _keys;
};
}
#endif
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