private static void DecodeCore(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.TryReadPrimitiveOctetString(out tmpSpan)) { decoded.A = rebindSpan.Overlaps(tmpSpan, out offset) ? rebind.Slice(offset, tmpSpan.Length) : tmpSpan.ToArray(); } else { decoded.A = sequenceReader.ReadOctetString(); } if (sequenceReader.TryReadPrimitiveOctetString(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.TryReadPrimitiveBitString(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(); }
private static void DecodeCore(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.TryReadPrimitiveBitString(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(); }