public bool TryReadPrimitiveBitStringValue(
Asn1Tag expectedTag,
out int unusedBitCount,
out ReadOnlyMemory <byte> value)
{
AsnValueReader reader = OpenValueReader();
if (reader.TryReadPrimitiveBitStringValue(expectedTag, out unusedBitCount, out ReadOnlySpan <byte> span))
{
value = AsnValueReader.Slice(_data, span);
reader.MatchSlice(ref _data);
return(true);
}
value = default;
return(false);
}
internal static void Decode(ref AsnValueReader reader, Asn1Tag expectedTag, ReadOnlyMemory <byte> rebind, out CurveAsn decoded)
{
decoded = default;
AsnValueReader sequenceReader = reader.ReadSequence(expectedTag);
ReadOnlySpan <byte> rebindSpan = rebind.Span;
int offset;
ReadOnlySpan <byte> tmpSpan;
if (sequenceReader.TryReadPrimitiveOctetStringBytes(out tmpSpan))
{
decoded.A = rebindSpan.Overlaps(tmpSpan, out offset) ? rebind.Slice(offset, tmpSpan.Length) : tmpSpan.ToArray();
}
else
{
decoded.A = sequenceReader.ReadOctetString();
}
if (sequenceReader.TryReadPrimitiveOctetStringBytes(out tmpSpan))
{
decoded.B = rebindSpan.Overlaps(tmpSpan, out offset) ? rebind.Slice(offset, tmpSpan.Length) : tmpSpan.ToArray();
}
else
{
decoded.B = sequenceReader.ReadOctetString();
}
if (sequenceReader.HasData && sequenceReader.PeekTag().HasSameClassAndValue(Asn1Tag.PrimitiveBitString))
{
if (sequenceReader.TryReadPrimitiveBitStringValue(out _, out tmpSpan))
{
decoded.Seed = rebindSpan.Overlaps(tmpSpan, out offset) ? rebind.Slice(offset, tmpSpan.Length) : tmpSpan.ToArray();
}
else
{
decoded.Seed = sequenceReader.ReadBitString(out _);
}
}
sequenceReader.ThrowIfNotEmpty();
}
internal static void Decode(ref AsnValueReader reader, Asn1Tag expectedTag, ReadOnlyMemory <byte> rebind, out SubjectPublicKeyInfoAsn decoded)
{
decoded = default;
AsnValueReader sequenceReader = reader.ReadSequence(expectedTag);
ReadOnlySpan <byte> rebindSpan = rebind.Span;
int offset;
ReadOnlySpan <byte> tmpSpan;
System.Security.Cryptography.Asn1.AlgorithmIdentifierAsn.Decode(ref sequenceReader, rebind, out decoded.Algorithm);
if (sequenceReader.TryReadPrimitiveBitStringValue(out _, out tmpSpan))
{
decoded.SubjectPublicKey = rebindSpan.Overlaps(tmpSpan, out offset) ? rebind.Slice(offset, tmpSpan.Length) : tmpSpan.ToArray();
}
else
{
decoded.SubjectPublicKey = sequenceReader.ReadBitString(out _);
}
sequenceReader.ThrowIfNotEmpty();
}
