/// <summary>
/// Extend signature to publication.
/// </summary>
/// <param name="calendarHashChain">extended calendar hash chain</param>
/// <param name="publicationRecord">extended publication record</param>
/// <param name="signatureFactory">signature factory to be used when creating extended signature</param>
/// <returns>extended KSI signature</returns>
public IKsiSignature Extend(CalendarHashChain calendarHashChain, PublicationRecordInSignature publicationRecord, IKsiSignatureFactory signatureFactory = null)
{
Logger.Debug("Extending KSI signature.");
if (calendarHashChain == null)
{
throw new ArgumentNullException(nameof(calendarHashChain));
}
if (CalendarHashChain != null && !CalendarHashChain.AreRightLinksEqual(calendarHashChain))
{
throw new KsiException("Right links of signature calendar hash chain and extended calendar hash chain do not match");
}
if (publicationRecord == null)
{
publicationRecord = new PublicationRecordInSignature(false, false, calendarHashChain.PublicationData);
}
if (signatureFactory == null)
{
signatureFactory = new KsiSignatureFactory();
}
using (TlvWriter writer = new TlvWriter(new MemoryStream()))
{
foreach (ITlvTag childTag in this)
{
switch (childTag.Type)
{
case Constants.CalendarHashChain.TagType:
case Constants.CalendarAuthenticationRecord.TagType:
case Constants.PublicationRecord.TagTypeInSignature:
break;
default:
writer.WriteTag(childTag);
break;
}
}
writer.WriteTag(calendarHashChain);
writer.WriteTag(publicationRecord);
try
{
IKsiSignature signature = signatureFactory.CreateByContent(((MemoryStream)writer.BaseStream).ToArray(), InputHash);
Logger.Debug("Extending KSI signature successful.");
return(signature);
}
catch (TlvException e)
{
Logger.Warn("Extending KSI signature failed: {0}", e);
throw;
}
}
}
/// <summary>
/// Calculate MAC and attach it to PDU.
/// </summary>
/// <param name="macAlgorithm">MAC algorithm</param>
/// <param name="key">hmac key</param>
/// <param name="header">KSI header</param>
/// <param name="payload">KSI payload</param>
public static ImprintTag GetMacTag(HashAlgorithm macAlgorithm, byte[] key, PduHeader header, PduPayload payload)
{
using (TlvWriter writer = new TlvWriter(new MemoryStream()))
{
writer.WriteTag(header);
writer.WriteTag(payload);
return(new ImprintTag(Constants.Pdu.MacTagType, false, false, CalculateMac(macAlgorithm, key, ((MemoryStream)writer.BaseStream).ToArray())));
}
}
public void TestWriteNullValue()
{
using (TlvWriter writer = new TlvWriter(new MemoryStream()))
{
writer.WriteTag(new AllowNullValueTlvTag(0x1, false, false));
writer.WriteTag(new AllowNullValueTlvTag(0x257, true, true));
CollectionAssert.AreEqual(new byte[] { 0x1, 0x0, 0xe2, 0x57, 0x0 }, ((MemoryStream)writer.BaseStream).ToArray(), "Writer should output correct byte array");
}
}
public void WriteTo(Stream outputStream)
{
using (TlvWriter writer = new TlvWriter(outputStream))
{
writer.WriteTag(this);
}
}
public static ITlvTag GetCompositeTag(Type type, uint tagType, ITlvTag[] childTags)
{
RawTag raw;
using (TlvWriter writer = new TlvWriter(new MemoryStream()))
{
foreach (ITlvTag tag in childTags)
{
writer.WriteTag(tag);
}
raw = new RawTag(tagType, false, false, ((MemoryStream)writer.BaseStream).ToArray());
}
object[] args = new object[] { raw };
ITlvTag value = (ITlvTag)Activator.CreateInstance(type, args);
// set _value inside CompositeTag
FieldInfo field = typeof(CompositeTag).GetField("_childTags", BindingFlags.Instance | BindingFlags.NonPublic);
if (field == null)
{
throw new Exception("Cannot find field '_value' inside CompositeTag class.");
}
field.SetValue(value, new List <ITlvTag>(childTags));
return(value);
}
public void TestWriteNullTag()
{
using (TlvWriter writer = new TlvWriter(new MemoryStream()))
{
writer.WriteTag(null);
CollectionAssert.AreEqual(new byte[] { }, ((MemoryStream)writer.BaseStream).ToArray(), "Writer should output correct byte array");
}
}
public void TestWriteTagShort()
{
using (TlvWriter writer = new TlvWriter(new MemoryStream()))
{
writer.WriteTag(new RawTag(0x1, false, true, new byte[] { 0x0, 0x1, 0x2, 0x3 }));
CollectionAssert.AreEqual(new byte[] { 0x21, 0x4, 0x0, 0x1, 0x2, 0x3 }, ((MemoryStream)writer.BaseStream).ToArray(), "Writer should output correct byte array");
}
}
/// <summary>
/// Calculate MAC value.
/// </summary>
/// <param name="macAlgorithm">MAC algorithm</param>
/// <param name="key">HMAC key</param>
private DataHash CalcMacValue(HashAlgorithm macAlgorithm, byte[] key)
{
MemoryStream stream = new MemoryStream();
using (TlvWriter writer = new TlvWriter(stream))
{
writer.WriteTag(this);
return(CalcMacValue(stream.ToArray(), macAlgorithm, key));
}
}
public void TestWriteTagWithTooLongData()
{
using (TlvWriter writer = new TlvWriter(new MemoryStream()))
{
ArgumentOutOfRangeException ex = Assert.Throws <ArgumentOutOfRangeException>(delegate
{
writer.WriteTag(new RawTag(0x1, true, true, new byte[ushort.MaxValue + 1]));
});
Assert.AreEqual("data", ex.ParamName);
}
}
public void TestWriteTagWithTooLongType()
{
using (TlvWriter writer = new TlvWriter(new MemoryStream()))
{
ArgumentOutOfRangeException ex = Assert.Throws <ArgumentOutOfRangeException>(delegate
{
writer.WriteTag(new RawTag(0x2000, true, true, new byte[256]));
});
Assert.AreEqual("tag", ex.ParamName);
}
}
/// <summary>
/// Get signed bytes.
/// </summary>
/// <returns>signed bytes</returns>
public byte[] GetSignedBytes()
{
using (TlvWriter writer = new TlvWriter(new MemoryStream()))
{
writer.Write(FileBeginningMagicBytes);
// get all but last tag
for (int i = 0; i < Count - 1; i++)
{
writer.WriteTag(this[i]);
}
return(((MemoryStream)writer.BaseStream).ToArray());
}
}
public void TestWriteTagLongWithLongType()
{
using (TlvWriter writer = new TlvWriter(new MemoryStream()))
{
writer.WriteTag(new RawTag(0x257, true, true, new byte[256]));
byte[] result = new byte[260];
result[0] = 0xe2;
result[1] = 0x57;
result[2] = 0x1;
result[3] = 0x0;
Array.Copy(new byte[256], 0, result, 4, 256);
CollectionAssert.AreEqual(result, ((MemoryStream)writer.BaseStream).ToArray(), "Writer should output correct byte array");
}
}
private static IKsiService GetService(List <PduPayload> payloads, ulong requestId = 1584727637)
{
List <ITlvTag> childTags = new List <ITlvTag> {
new PduHeader(Settings.Default.HttpExtendingServiceUser)
};
childTags.AddRange(payloads);
childTags.Add(new ImprintTag(Constants.Pdu.MacTagType, false, false, new DataHash(HashAlgorithm.Sha2256, new byte[32])));
ExtendResponsePdu pdu = TestUtil.GetCompositeTag <ExtendResponsePdu>(Constants.ExtendResponsePdu.TagType, childTags.ToArray());
MethodInfo m = pdu.GetType().GetMethod("SetMacValue", BindingFlags.Instance | BindingFlags.NonPublic);
m.Invoke(pdu, new object[] { HashAlgorithm.Sha2256, Util.EncodeNullTerminatedUtf8String(TestConstants.ServicePass) });
MemoryStream stream = new MemoryStream();
using (TlvWriter writer = new TlvWriter(stream))
{
writer.WriteTag(pdu);
}
return(GetStaticKsiService(stream.ToArray(), requestId));
}
