// helpers
private void WriteIdentifier(ASN1Class asn1Class, bool constructed, ASN1UniversalTag tag)
{
WriteIdentifier(asn1Class, constructed, (byte)tag);
}
private ASN1Object ReadUniversal(bool constructed, ASN1UniversalTag tag)
{
if (tag == ASN1UniversalTag.LongForm)
{
throw new NotImplementedException();
}
var length = ReadLength();
// ignoring:
// * 8.5 Encoding of a real value
if (!constructed)
{
switch (tag)
{
case ASN1UniversalTag.Boolean:
return(ReadBoolean(length));
case ASN1UniversalTag.Integer:
case ASN1UniversalTag.Enumerated:
return(ReadInteger(length));
case ASN1UniversalTag.BitString:
return(ReadPrimitiveBitString(length));
case ASN1UniversalTag.OctetString:
return(ReadPrimitiveOctetString(length));
case ASN1UniversalTag.Null:
return(new ASN1Null());
case ASN1UniversalTag.ObjectIdentifier:
return(ReadObjectIdentifier(length));
case ASN1UniversalTag.PrintableString:
return(ReadPrintableString(length));
case ASN1UniversalTag.UTF8String:
return(ReadUTF8String(length));
case ASN1UniversalTag.UTCTime:
return(ReadUTCTime(length));
}
}
else
{
switch (tag)
{
case ASN1UniversalTag.Sequence:
return(ReadSequence(length));
case ASN1UniversalTag.Set:
return(ReadSet(length));
case ASN1UniversalTag.UTCTime:
return(ReadUTCTime(length));
}
}
throw new NotImplementedException();
}
// helpers
private void WriteIdentifier(ASN1Class asn1Class, bool constructed, ASN1UniversalTag tag)
{
WriteIdentifier(asn1Class, constructed, (byte)tag);
}
private ASN1Object ReadUniversal(bool constructed, ASN1UniversalTag tag)
{
if (tag == ASN1UniversalTag.LongForm)
{
throw new NotImplementedException();
}
var length = ReadLength();
// ignoring:
// * 8.5 Encoding of a real value
if (!constructed)
{
switch (tag)
{
case ASN1UniversalTag.Boolean:
return ReadBoolean(length);
case ASN1UniversalTag.Integer:
case ASN1UniversalTag.Enumerated:
return ReadInteger(length);
case ASN1UniversalTag.BitString:
return ReadPrimitiveBitString(length);
case ASN1UniversalTag.OctetString:
return ReadPrimitiveOctetString(length);
case ASN1UniversalTag.Null:
return new ASN1Null();
case ASN1UniversalTag.ObjectIdentifier:
return ReadObjectIdentifier(length);
case ASN1UniversalTag.UTF8String:
return ReadUTF8String(length);
case ASN1UniversalTag.UTCTime:
return ReadUTCTime(length);
}
}
else
{
switch (tag)
{
case ASN1UniversalTag.Sequence:
return ReadSequence(length);
case ASN1UniversalTag.Set:
return ReadSet(length);
case ASN1UniversalTag.UTCTime:
return ReadUTCTime(length);
}
}
throw new NotImplementedException();
}
