public void Generate(Stream outputStream)
{
var document = new CpixDocument();
document.ContentKeys.Add(new ContentKey
{
Id = new Guid("bbe06060-1c26-4ed5-8ccd-ee03ddb2ffd9"),
Value = Convert.FromBase64String("aTqer0SFxijnIoQLXGHYJg==")
});
document.Recipients.Add(new Recipient(TestHelpers.Certificate1WithPublicKey));
document.SignedBy = TestHelpers.Certificate2WithPrivateKey;
var buffer = new MemoryStream();
document.Save(buffer);
var xml = new XmlDocument();
buffer.Position = 0;
xml.Load(buffer);
XmlHelpers.DeclareNamespace(xml.DocumentElement, "xxx", "http://example.com/this/makes/the/document/signature/invalid");
using (var writer = XmlWriter.Create(outputStream, new XmlWriterSettings
{
Encoding = Encoding.UTF8,
CloseOutput = false
}))
{
xml.Save(writer);
}
}
public void Generate(Stream outputStream)
{
var document = new CpixDocument();
document.ContentKeys.Add(new ContentKey
{
Id = new Guid("bc365b99-0667-446f-b417-ff0398c9a4c4"),
Value = Convert.FromBase64String("gMMdXMudvuGpYW5k3lzf/g==")
});
document.ContentKeys.Add(new ContentKey
{
Id = new Guid("1e25f2a7-76a9-4570-bc1a-d8181800d529"),
Value = Convert.FromBase64String("WUxnvQjGw28bA3cgW/1jfg==")
});
document.ContentKeys.Add(new ContentKey
{
Id = new Guid("2e4e6c21-c0d7-4a1c-80af-bff3d7cc5270"),
Value = Convert.FromBase64String("cCudMIPMQkak1l+oCVXT2A==")
});
document.ContentKeys.Add(new ContentKey
{
Id = new Guid("8ad35bd4-53ab-437b-8f42-6e1ea8e2f0d8"),
Value = Convert.FromBase64String("zqvOfAja51IUSRV385bvoA==")
});
document.Recipients.Add(new Recipient(TestHelpers.Certificate1WithPublicKey));
document.Recipients.Add(new Recipient(TestHelpers.Certificate2WithPublicKey));
document.Recipients.Add(new Recipient(TestHelpers.Certificate3WithPublicKey));
document.Recipients.Add(new Recipient(TestHelpers.Certificate4WithPublicKey));
document.Save(outputStream);
}
public void Generate(Stream outputStream)
{
var document = new CpixDocument();
document.ContentKeys.Add(new ContentKey
{
Id = new Guid("40d02dd1-61a3-4787-a155-572325d47b80"),
Value = Convert.FromBase64String("gPxt0PMwrHM4TdjwdQmhhQ==")
});
document.ContentKeys.Add(new ContentKey
{
Id = new Guid("0a30ea4f-539d-4b02-94b2-2b3fba2576d3"),
Value = Convert.FromBase64String("x/gaoS/fDi8BqGNIhkixwQ==")
});
document.ContentKeys.Add(new ContentKey
{
Id = new Guid("9f7908fa-5d5c-4097-ba53-50edc2235fbc"),
Value = Convert.FromBase64String("3iv9lYwafpe0uEmxDc6PSw==")
});
document.ContentKeys.Add(new ContentKey
{
Id = new Guid("fac2cbf5-889c-412b-a385-04a29d409bdc"),
Value = Convert.FromBase64String("1OZVZZoYFSU2X/7qT3sHwg==")
});
document.Save(outputStream);
}
private static void WritingCpixExample()
{
var document = new CpixDocument();
// Let's create a CPIX document with two content keys.
document.ContentKeys.Add(new ContentKey
{
Id = Guid.NewGuid(),
Value = new byte[] { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 1, 2, 3, 4, 5, 6 }
});
document.ContentKeys.Add(new ContentKey
{
Id = Guid.NewGuid(),
Value = new byte[] { 6, 7, 8, 9, 10, 1, 2, 3, 4, 5, 6, 1, 2, 3, 4, 5 }
});
using (var myCertificateAndPrivateKey = new X509Certificate2("Cert1.pfx", "Cert1"))
using (var recipientCertificate = new X509Certificate2("Cert2.cer"))
{
// Optional: we sign the list added elements to and also the document as a whole.
document.ContentKeys.AddSignature(myCertificateAndPrivateKey);
document.SignedBy = myCertificateAndPrivateKey;
// Optional: the presence of recipients will automatically mark the content keys to be encrypted on save.
document.Recipients.Add(new Recipient(recipientCertificate));
document.Save("cpix.xml");
}
}
public void LoadDocument_WithXmlCommentsAddedAfterSigning_SuccessfullyValidatesSignature()
{
// The canonicalization we use excludes comments, so comments should have no effect on signature validity.
var document = new CpixDocument();
FillDocumentWithData(document);
document.Recipients.AddSignature(TestHelpers.Certificate4WithPrivateKey);
document.ContentKeys.AddSignature(TestHelpers.Certificate4WithPrivateKey);
document.UsageRules.AddSignature(TestHelpers.Certificate4WithPrivateKey);
document.SignedBy = TestHelpers.Certificate3WithPrivateKey;
var buffer = new MemoryStream();
document.Save(buffer);
// Let's now sprinkle comments all over the place.
var xmlDocument = new XmlDocument();
buffer.Position = 0;
xmlDocument.Load(buffer);
var namespaces = XmlHelpers.CreateCpixNamespaceManager(xmlDocument);
AddCommentAsChild(xmlDocument.DocumentElement);
AddCommentAsChild((XmlElement)xmlDocument.SelectSingleNode("/cpix:CPIX/cpix:DeliveryDataList", namespaces));
AddCommentAsChild((XmlElement)xmlDocument.SelectSingleNode("/cpix:CPIX/cpix:ContentKeyList", namespaces));
AddCommentAsChild((XmlElement)xmlDocument.SelectSingleNode("/cpix:CPIX/cpix:ContentKeyUsageRuleList", namespaces));
AddCommentAsChild((XmlElement)xmlDocument.SelectSingleNode("/cpix:CPIX/cpix:DeliveryDataList/cpix:DeliveryData", namespaces));
AddCommentAsChild((XmlElement)xmlDocument.SelectSingleNode("/cpix:CPIX/cpix:ContentKeyList/cpix:ContentKey", namespaces));
AddCommentAsChild((XmlElement)xmlDocument.SelectSingleNode("/cpix:CPIX/cpix:ContentKeyUsageRuleList/cpix:ContentKeyUsageRule", namespaces));
buffer.SetLength(0);
using (var writer = XmlWriter.Create(buffer, new XmlWriterSettings
{
Encoding = Encoding.UTF8,
CloseOutput = false,
}))
{
xmlDocument.Save(writer);
}
buffer.Position = 0;
document = CpixDocument.Load(buffer);
Assert.NotNull(document.SignedBy);
Assert.Single(document.Recipients.SignedBy);
Assert.Single(document.ContentKeys.SignedBy);
Assert.Single(document.UsageRules.SignedBy);
// And, of course, the data should still be there.
Assert.Equal(2, document.ContentKeys.Count);
Assert.Equal(2, document.Recipients.Count);
Assert.Equal(2, document.UsageRules.Count);
}
public static CpixDocument Reload(CpixDocument document, IReadOnlyCollection <X509Certificate2> decryptionCertificates = null)
{
var buffer = new MemoryStream();
document.Save(buffer);
buffer.Position = 0;
return(CpixDocument.Load(buffer, decryptionCertificates));
}
public void Generate(Stream outputStream)
{
var document = new CpixDocument();
document.Recipients.Add(new Recipient(TestHelpers.Certificate3WithPublicKey));
document.Recipients.Add(new Recipient(TestHelpers.Certificate4WithPublicKey));
document.Save(outputStream);
}
public void LoadDocument_WithUtf16EncodedInput_Succeeds()
{
// We ensure that some non-ASCII text survives the encoding/decoding/signing process intact.
const string canary = "滆 柦柋牬 趉軨鄇 鶊鵱, 緳廞徲 鋑鋡髬 溮煡煟 綡蒚";
var document = new CpixDocument();
FillDocumentWithData(document);
document.UsageRules.First().LabelFilters = new[]
{
new LabelFilter
{
Label = canary
}
};
document.Recipients.AddSignature(TestHelpers.Certificate4WithPrivateKey);
document.ContentKeys.AddSignature(TestHelpers.Certificate4WithPrivateKey);
document.UsageRules.AddSignature(TestHelpers.Certificate4WithPrivateKey);
document.SignedBy = TestHelpers.Certificate3WithPrivateKey;
var buffer = new MemoryStream();
document.Save(buffer);
// Now we have a basic UTF-8 document in the buffer. Convert to UTF-16!
// Using XmlDocument here to do it in a "smart" way with all the XML processing.
var xmlDocument = new XmlDocument();
buffer.Position = 0;
xmlDocument.Load(buffer);
buffer.SetLength(0);
using (var writer = XmlWriter.Create(buffer, new XmlWriterSettings
{
Encoding = Encoding.Unicode,
CloseOutput = false,
}))
{
xmlDocument.Save(writer);
}
buffer.Position = 0;
// Okay, does it load? It should!
document = CpixDocument.Load(buffer);
Assert.Equal(2, document.ContentKeys.Count);
Assert.Equal(2, document.Recipients.Count);
Assert.Equal(2, document.UsageRules.Count);
Assert.Equal(canary, document.UsageRules.First().LabelFilters.Single().Label);
}
public void Save_WithDrmSystemThatReferencesNonExistentContentKey_Fails()
{
var document = new CpixDocument();
document.ContentKeys.Add(TestHelpers.GenerateContentKey());
document.DrmSystems.Add(new DrmSystem
{
SystemId = Guid.NewGuid(),
KeyId = Guid.NewGuid()
});
Assert.Throws <InvalidCpixDataException>(() => document.Save(new MemoryStream()));
}
static void GenerateCpix(string name, IReadOnlyDictionary <Guid, byte[]> keys)
{
var document = new CpixDocument();
foreach (var pair in keys)
{
document.ContentKeys.Add(new ContentKey
{
Id = pair.Key,
Value = pair.Value
});
}
document.Save(name);
}
public void Save_WithSneakilyCorruptedContentKey_Fails()
{
var contentKey = TestHelpers.GenerateContentKey();
var document = new CpixDocument();
// It will be validated here.
document.ContentKeys.Add(contentKey);
// Corrupt it after validation!
contentKey.Value = null;
// The corruption should still be caught.
Assert.Throws <InvalidCpixDataException>(() => document.Save(new MemoryStream()));
}
private static MemoryStream GenerateNontrivialCpixStream()
{
var document = new CpixDocument();
FillDocumentWithData(document);
// It will be saved without whitespace or formatting. This is fine.
var buffer = new MemoryStream();
document.Save(buffer);
buffer.Position = 0;
return(buffer);
}
public void Save_WithSneakilyCorruptedUsageRule_Fails()
{
var document = new CpixDocument();
document.ContentKeys.Add(TestHelpers.GenerateContentKey());
// It will be validated here.
var rule = TestHelpers.AddUsageRule(document);
// Corrupt it after validation!
rule.KeyId = Guid.NewGuid();
// The corruption should still be caught.
Assert.ThrowsAny <Exception>(() => document.Save(new MemoryStream()));
}
public void Generate(Stream outputStream)
{
var document = new CpixDocument();
foreach (var pair in _contentKeys)
{
document.ContentKeys.Add(new ContentKey
{
Id = pair.Key,
Value = Convert.FromBase64String(pair.Value)
});
}
document.Recipients.Add(new Recipient(TestHelpers.Certificate1WithPublicKey));
document.Save(outputStream);
}
public void Save_OneClearKey_DoesNotHorriblyFail()
{
var keyData = TestHelpers.GenerateKeyData();
var document = new CpixDocument();
document.ContentKeys.Add(new ContentKey
{
Id = keyData.Item1,
Value = keyData.Item2
});
using (var buffer = new MemoryStream())
{
document.Save(buffer);
// Something got saved and there was no exception. Good enough!
Assert.NotEqual(0, buffer.Length);
}
}
public void Generate(Stream outputStream)
{
var document = new CpixDocument();
document.ContentKeys.Add(new ContentKey
{
Id = new Guid("c003b21a-fe68-4162-a809-b0add9fe49c1"),
Value = Convert.FromBase64String("fV2AfUA1WnvFaySrl6I7vg==")
});
document.ContentKeys.Add(new ContentKey
{
Id = new Guid("a3813bc3-986a-462b-84d1-c5d17d3ac0f5"),
Value = Convert.FromBase64String("fs1XSl6sqULnEjX0g6UyBg==")
});
document.ContentKeys.AddSignature(TestHelpers.Certificate4WithPrivateKey);
var buffer = new MemoryStream();
document.Save(buffer);
var xml = new XmlDocument();
buffer.Position = 0;
xml.Load(buffer);
var namespaces = XmlHelpers.CreateCpixNamespaceManager(xml);
var firstContentKey = (XmlElement)xml.SelectSingleNode("/cpix:CPIX/cpix:ContentKeyList/cpix:ContentKey", namespaces);
firstContentKey.ParentNode.RemoveChild(firstContentKey);
using (var writer = XmlWriter.Create(outputStream, new XmlWriterSettings
{
Encoding = Encoding.UTF8,
CloseOutput = false
}))
{
xml.Save(writer);
}
}
public void Save_WithValidDrmSystem_Succeeds()
{
var document = new CpixDocument();
document.ContentKeys.Add(TestHelpers.GenerateContentKey());
document.DrmSystems.Add(new DrmSystem
{
SystemId = Guid.NewGuid(),
KeyId = document.ContentKeys.First().Id,
ContentProtectionData = "<pssh>data</pssh>",
HdsSignalingData = "<drmAdditionalHeader>data</drmAdditionalHeader>",
Pssh = Convert.ToBase64String(new byte[] { 0x11, 0x22, 0x33 }),
HlsSignalingData = new HlsSignalingData
{
MasterPlaylistData = "hlsmasterdata1",
MediaPlaylistData = "hlsmediadata2"
},
SmoothStreamingProtectionHeaderData = "smoothstreamingdata"
});
Assert.Null(Record.Exception(() => document.Save(new MemoryStream())));
}
public void Generate(Stream outputStream)
{
var document = new CpixDocument();
document.ContentKeys.Add(new ContentKey
{
Id = new Guid("5ad2b739-4f46-48df-9a44-aab8c35abf71"),
Value = Convert.FromBase64String("QsCLorCoPAmTd2IHz2pogg==")
});
document.Recipients.Add(new Recipient(TestHelpers.Certificate1WithPublicKey));
var buffer = new MemoryStream();
document.Save(buffer);
var xml = new XmlDocument();
buffer.Position = 0;
xml.Load(buffer);
var namespaces = XmlHelpers.CreateCpixNamespaceManager(xml);
var mac = xml.SelectSingleNode("/cpix:CPIX/cpix:ContentKeyList/cpix:ContentKey/cpix:Data/pskc:Secret/pskc:ValueMAC", namespaces);
// No way this will be the right MAC!
mac.InnerText = "YtijEC7siGSqLg/9WrZ5Z7/TCVE9BydVO9UOv28yZr5+QCdstz8uAQvC9mFFx8hag0LKw461/OKIe5Fr7Mvo2A==";
using (var writer = XmlWriter.Create(outputStream, new XmlWriterSettings
{
Encoding = Encoding.UTF8,
CloseOutput = false
}))
{
xml.Save(writer);
}
}
public void Generate(Stream outputStream)
{
var document = new CpixDocument();
const string complexLabel = "滆 柦柋牬 趉軨鄇 鶊鵱, 緳廞徲 鋑鋡髬 溮煡煟 綡蒚";
document.SignedBy = TestHelpers.Certificate4WithPrivateKey;
document.Recipients.AddSignature(TestHelpers.Certificate3WithPrivateKey);
document.Recipients.AddSignature(TestHelpers.Certificate4WithPrivateKey);
document.ContentKeys.AddSignature(TestHelpers.Certificate3WithPrivateKey);
document.ContentKeys.AddSignature(TestHelpers.Certificate4WithPrivateKey);
document.DrmSystems.AddSignature(TestHelpers.Certificate3WithPrivateKey);
document.DrmSystems.AddSignature(TestHelpers.Certificate4WithPrivateKey);
document.UsageRules.AddSignature(TestHelpers.Certificate3WithPrivateKey);
document.UsageRules.AddSignature(TestHelpers.Certificate4WithPrivateKey);
document.ContentKeys.Add(new ContentKey
{
Id = new Guid("b4c3188b-eddd-453d-9bc2-1cbca7566239"),
Value = Convert.FromBase64String("b1pkxdNYqPxljV68gohWcw=="),
ExplicitIv = Convert.FromBase64String("eMCi02KFz9fdUGd/6B+lgw==")
});
document.ContentKeys.Add(new ContentKey
{
Id = new Guid("c6294999-5f48-445f-bcce-f7e5f736d7c6"),
Value = Convert.FromBase64String("moOVrJvuhUUQ4LpPusAd5g=="),
ExplicitIv = Convert.FromBase64String("XiLNTv8ZHbMI+F2g2TkL6w==")
});
document.ContentKeys.Add(new ContentKey
{
Id = new Guid("b181a4df-2c38-41a4-993f-90b2f21343f6"),
Value = Convert.FromBase64String("67gabJtKDWd2crHr+JQT1A=="),
ExplicitIv = Convert.FromBase64String("E5XdJoK4ja+Rf/dcVvhRTA==")
});
document.ContentKeys.Add(new ContentKey
{
Id = new Guid("a466cdfd-e556-4b1d-8098-c1a4aa78997a"),
Value = Convert.FromBase64String("rRuRUWAibaUtai0qQnb71g=="),
ExplicitIv = Convert.FromBase64String("yIZGwf6xwXgRHyXBNV0jRA==")
});
DrmSignalingHelpers.AddDefaultSignalingForAllKeys(document);
document.Recipients.Add(new Recipient(TestHelpers.Certificate1WithPublicKey));
document.Recipients.Add(new Recipient(TestHelpers.Certificate2WithPublicKey));
document.UsageRules.Add(new UsageRule
{
KeyId = document.ContentKeys.First().Id,
AudioFilters = new[]
{
new AudioFilter
{
MinChannels = 1,
MaxChannels = 2
},
new AudioFilter
{
MinChannels = 8,
MaxChannels = 10
}
},
BitrateFilters = new[]
{
new BitrateFilter
{
MinBitrate = 1000,
MaxBitrate = 5 * 1000 * 1000
},
new BitrateFilter
{
MinBitrate = 10 * 1000 * 1000,
MaxBitrate = 32 * 1000 * 1000
}
},
LabelFilters = new[]
{
new LabelFilter("EncryptedStream"),
new LabelFilter("CencStream"),
new LabelFilter(complexLabel),
}
});
document.UsageRules.Add(new UsageRule
{
KeyId = document.ContentKeys.Last().Id,
BitrateFilters = new[]
{
new BitrateFilter
{
MinBitrate = 1000,
MaxBitrate = 5 * 1000 * 1000
},
new BitrateFilter
{
MinBitrate = 10 * 1000 * 1000,
MaxBitrate = 32 * 1000 * 1000
}
},
LabelFilters = new[]
{
new LabelFilter("EncryptedStream"),
new LabelFilter("CencStream"),
new LabelFilter(complexLabel),
},
VideoFilters = new[]
{
new VideoFilter
{
MinPixels = 1000,
MaxPixels = 1920 * 1080,
MinFramesPerSecond = 10,
MaxFramesPerSecond = 30,
WideColorGamut = false,
HighDynamicRange = true,
},
new VideoFilter
{
MinPixels = 1000,
MaxPixels = 4096 * 4096,
MinFramesPerSecond = 30,
MaxFramesPerSecond = 200,
WideColorGamut = false,
HighDynamicRange = false,
}
}
});
document.Save(outputStream);
}
public void Generate(Stream outputStream)
{
var document = new CpixDocument();
document.ContentKeys.Add(new ContentKey
{
Id = new Guid("ba6c62d6-4a49-4aa4-8869-ce4d2727a2b5"),
Value = Convert.FromBase64String("sLVGDIuvogAUW+Ay0mE9ZA==")
});
document.ContentKeys.Add(new ContentKey
{
Id = new Guid("37e3de05-9a3b-4c69-8970-63c17a95e0b7"),
Value = Convert.FromBase64String("UvL2JdZiEX2exVMwn796Tg==")
});
document.ContentKeys.Add(new ContentKey
{
Id = new Guid("53abdba2-f210-43cb-bc90-f18f9a890a02"),
Value = Convert.FromBase64String("lOgzNKBnPZlGSns+WqO8zw==")
});
document.ContentKeys.Add(new ContentKey
{
Id = new Guid("7ae8e96f-309e-42c3-a510-24023d923373"),
Value = Convert.FromBase64String("K9uQ8+GgwrNx4keBHnI4Xw==")
});
document.UsageRules.Add(new UsageRule
{
KeyId = document.ContentKeys.ElementAt(0).Id,
LabelFilters = new[]
{
new LabelFilter("AllAudioStreams"),
new LabelFilter("Audio"),
new LabelFilter("PositionalAudio"),
new LabelFilter("Stereo"),
}
});
// Intentionally add two rules for first key ID, to emphasize that there is no limit of one.
document.UsageRules.Add(new UsageRule
{
KeyId = document.ContentKeys.ElementAt(0).Id,
LabelFilters = new[]
{
new LabelFilter("Commentary"),
new LabelFilter("Telephony"),
new LabelFilter("Speech"),
}
});
document.UsageRules.Add(new UsageRule
{
KeyId = document.ContentKeys.ElementAt(1).Id,
LabelFilters = new[]
{
new LabelFilter("SD-Video"),
}
});
document.UsageRules.Add(new UsageRule
{
KeyId = document.ContentKeys.ElementAt(2).Id,
LabelFilters = new[]
{
new LabelFilter("HD-Video"),
}
});
document.UsageRules.Add(new UsageRule
{
KeyId = document.ContentKeys.ElementAt(3).Id,
LabelFilters = new[]
{
new LabelFilter("UHD-Video"),
new LabelFilter("3D-Video"),
new LabelFilter("WCG-Video"),
new LabelFilter("HDR-Video"),
}
});
// Intentionally no rule for last key ID, to emphasize that not all keys need to have usage rules.
document.Save(outputStream);
}