2 Copyright (C) 2013-2015 Carl Hetherington <cth@carlh.net>
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 #include "certificate.h"
21 #include "decrypted_kdm.h"
22 #include "encrypted_kdm.h"
23 #include "certificate_chain.h"
24 #include "mono_picture_asset.h"
25 #include "sound_asset.h"
29 #include "mono_picture_frame.h"
30 #include "certificate_chain.h"
31 #include "mono_picture_asset_writer.h"
32 #include "reel_picture_asset.h"
33 #include "reel_mono_picture_asset.h"
35 #include "openjpeg_image.h"
37 #include "colour_conversion.h"
38 #include <boost/test/unit_test.hpp>
39 #include <boost/scoped_array.hpp>
44 using boost::shared_ptr;
45 using boost::scoped_array;
47 /** Build an encrypted picture asset and a KDM for it and check that the KDM can be decrypted */
48 BOOST_AUTO_TEST_CASE (round_trip_test)
50 shared_ptr<dcp::CertificateChain> signer (new dcp::CertificateChain ("openssl"));
52 boost::filesystem::path work_dir = "build/test/round_trip_test";
53 boost::filesystem::create_directory (work_dir);
55 shared_ptr<dcp::MonoPictureAsset> asset_A (new dcp::MonoPictureAsset (dcp::Fraction (24, 1)));
56 shared_ptr<dcp::PictureAssetWriter> writer = asset_A->start_write (work_dir / "video.mxf", dcp::SMPTE, false);
57 dcp::File j2c ("test/data/32x32_red_square.j2c");
58 for (int i = 0; i < 24; ++i) {
59 writer->write (j2c.data (), j2c.size ());
65 asset_A->set_key (key);
67 shared_ptr<dcp::CPL> cpl (new dcp::CPL ("A Test DCP", dcp::FEATURE));
68 shared_ptr<dcp::Reel> reel (new dcp::Reel ());
69 reel->add (shared_ptr<dcp::ReelMonoPictureAsset> (new dcp::ReelMonoPictureAsset (asset_A, 0)));
72 /* A KDM using our certificate chain's leaf key pair */
73 dcp::DecryptedKDM kdm_A (
76 dcp::LocalTime ("2013-01-01T00:00:00+00:00"),
77 dcp::LocalTime ("2013-01-08T00:00:00+00:00"),
80 "2012-07-17T04:45:18+00:00"
83 boost::filesystem::path const kdm_file = work_dir / "kdm.xml";
85 kdm_A.encrypt(signer, signer->leaf(), vector<dcp::Certificate>(), dcp::MODIFIED_TRANSITIONAL_1).as_xml (kdm_file);
87 /* Reload the KDM, using our private key to decrypt it */
88 dcp::DecryptedKDM kdm_B (dcp::EncryptedKDM (dcp::file_to_string (kdm_file)), signer->key().get ());
90 /* Check that the decrypted KDMKeys are the same as the ones we started with */
91 BOOST_CHECK_EQUAL (kdm_A.keys().size(), kdm_B.keys().size());
92 list<dcp::DecryptedKDMKey> keys_A = kdm_A.keys ();
93 list<dcp::DecryptedKDMKey> keys_B = kdm_B.keys ();
94 list<dcp::DecryptedKDMKey>::const_iterator i = keys_A.begin();
95 list<dcp::DecryptedKDMKey>::const_iterator j = keys_B.begin();
96 while (i != keys_A.end ()) {
97 BOOST_CHECK (*i == *j);
102 /* Reload the picture asset */
103 shared_ptr<dcp::MonoPictureAsset> asset_B (
104 new dcp::MonoPictureAsset (work_dir / "video.mxf")
107 BOOST_CHECK (!kdm_B.keys().empty ());
108 asset_B->set_key (kdm_B.keys().front().key());
110 shared_ptr<dcp::OpenJPEGImage> xyz_A = asset_A->get_frame(0)->xyz_image ();
111 shared_ptr<dcp::OpenJPEGImage> xyz_B = asset_B->get_frame(0)->xyz_image ();
113 scoped_array<uint8_t> frame_A (new uint8_t[xyz_A->size().width * xyz_A->size().height * 4]);
114 dcp::xyz_to_rgba (xyz_A, dcp::ColourConversion::srgb_to_xyz(), frame_A.get());
116 scoped_array<uint8_t> frame_B (new uint8_t[xyz_B->size().width * xyz_B->size().height * 4]);
117 dcp::xyz_to_rgba (xyz_B, dcp::ColourConversion::srgb_to_xyz(), frame_B.get());
119 BOOST_CHECK_EQUAL (xyz_A->size().width, xyz_B->size().width);
120 BOOST_CHECK_EQUAL (xyz_A->size().height, xyz_B->size().height);
121 BOOST_CHECK_EQUAL (memcmp (frame_A.get(), frame_B.get(), xyz_A->size().width * xyz_A->size().height * 4), 0);