internal static void Decode(AsnReader reader, out DirectoryStringAsn decoded)
{
if (reader == null)
{
throw new ArgumentNullException(nameof(reader));
}
decoded = default;
Asn1Tag tag = reader.PeekTag();
if (tag.HasSameClassAndValue(new Asn1Tag(UniversalTagNumber.T61String)))
{
decoded.TeletexString = reader.ReadCharacterString(UniversalTagNumber.T61String);
}
else if (tag.HasSameClassAndValue(new Asn1Tag(UniversalTagNumber.PrintableString)))
{
decoded.PrintableString = reader.ReadCharacterString(UniversalTagNumber.PrintableString);
}
else if (tag.HasSameClassAndValue(new Asn1Tag((UniversalTagNumber)28)))
{
decoded.UniversalString = reader.ReadEncodedValue();
}
else if (tag.HasSameClassAndValue(new Asn1Tag(UniversalTagNumber.UTF8String)))
{
decoded.Utf8String = reader.ReadCharacterString(UniversalTagNumber.UTF8String);
}
else if (tag.HasSameClassAndValue(new Asn1Tag(UniversalTagNumber.BMPString)))
{
decoded.BmpString = reader.ReadCharacterString(UniversalTagNumber.BMPString);
}
else
{
throw new CryptographicException();
}
}
private static void DecodeCore(ref AsnValueReader reader, ReadOnlyMemory <byte> rebind, out DirectoryStringAsn decoded)
{
decoded = default;
Asn1Tag tag = reader.PeekTag();
ReadOnlySpan <byte> rebindSpan = rebind.Span;
int offset;
ReadOnlySpan <byte> tmpSpan;
if (tag.HasSameClassAndValue(new Asn1Tag(UniversalTagNumber.T61String)))
{
decoded.TeletexString = reader.ReadCharacterString(UniversalTagNumber.T61String);
}
else if (tag.HasSameClassAndValue(new Asn1Tag(UniversalTagNumber.PrintableString)))
{
decoded.PrintableString = reader.ReadCharacterString(UniversalTagNumber.PrintableString);
}
else if (tag.HasSameClassAndValue(new Asn1Tag((UniversalTagNumber)28)))
{
tmpSpan = reader.ReadEncodedValue();
decoded.UniversalString = rebindSpan.Overlaps(tmpSpan, out offset) ? rebind.Slice(offset, tmpSpan.Length) : tmpSpan.ToArray();
}
else if (tag.HasSameClassAndValue(new Asn1Tag(UniversalTagNumber.UTF8String)))
{
decoded.Utf8String = reader.ReadCharacterString(UniversalTagNumber.UTF8String);
}
else if (tag.HasSameClassAndValue(new Asn1Tag(UniversalTagNumber.BMPString)))
{
decoded.BmpString = reader.ReadCharacterString(UniversalTagNumber.BMPString);
}
else
{
throw new CryptographicException();
}
}
internal static void Decode(ref AsnValueReader reader, ReadOnlyMemory <byte> rebind, out DirectoryStringAsn decoded)
{
try
{
DecodeCore(ref reader, rebind, out decoded);
}
catch (AsnContentException e)
{
throw new CryptographicException(SR.Cryptography_Der_Invalid_Encoding, e);
}
}
