protected internal virtual SignatureLevelX VerifyLevelX(AdvancedSignature signature
, DateTime referenceTime, ValidationContext ctx)
{
try
{
Result levelReached = new Result();
levelReached.SetStatus(Result.ResultStatus.VALID, null);
TimestampVerificationResult[] x1Results = null;
TimestampVerificationResult[] x2Results = null;
IList <TimestampToken> timestampX1 = signature.GetTimestampsX1();
if (timestampX1 != null && !timestampX1.IsEmpty())
{
byte[] data = signature.GetTimestampX1Data();
x1Results = new TimestampVerificationResult[timestampX1.Count];
for (int i = 0; i < timestampX1.Count; i++)
{
try
{
TimestampToken t = timestampX1[i];
x1Results[i] = new TimestampVerificationResult(t);
if (!t.MatchData(data))
{
levelReached.SetStatus(Result.ResultStatus.INVALID, "timestamp.dont.sign.data");
x1Results[i].SetSameDigest(new Result(Result.ResultStatus.INVALID, "timestamp.dont.sign.data"
));
}
else
{
x1Results[i].SetSameDigest(new Result(Result.ResultStatus.VALID, null));
}
CheckTimeStampCertPath(t, x1Results[i], ctx, signature);
}
catch (NoSuchAlgorithmException)
{
levelReached.SetStatus(Result.ResultStatus.UNDETERMINED, "no.such.algoritm");
}
}
}
IList <TimestampToken> timestampX2 = signature.GetTimestampsX2();
if (timestampX2 != null && !timestampX2.IsEmpty())
{
byte[] data = signature.GetTimestampX2Data();
x2Results = new TimestampVerificationResult[timestampX2.Count];
int i = 0;
foreach (TimestampToken t in timestampX2)
{
try
{
x2Results[i] = new TimestampVerificationResult(t);
if (!t.MatchData(data))
{
levelReached.SetStatus(Result.ResultStatus.INVALID, "timestamp.dont.sign.data");
x2Results[i].SetSameDigest(new Result(Result.ResultStatus.INVALID, "timestamp.dont.sign.data"
));
}
else
{
x2Results[i].SetSameDigest(new Result(Result.ResultStatus.VALID, null));
}
CheckTimeStampCertPath(t, x2Results[i], ctx, signature);
}
catch (NoSuchAlgorithmException)
{
levelReached.SetStatus(Result.ResultStatus.UNDETERMINED, "no.such.algoritm");
}
}
}
if ((timestampX1 == null || timestampX1.IsEmpty()) && (timestampX2 == null || timestampX2
.IsEmpty()))
{
levelReached.SetStatus(Result.ResultStatus.INVALID, "no.timestamp");
}
return(new SignatureLevelX(signature, levelReached, x1Results, x2Results));
}
catch (Exception)
{
return(new SignatureLevelX(signature, new Result(Result.ResultStatus.INVALID, "exception.while.verifying"
)));
}
}
