internal static void Decode(ref AsnValueReader reader, ReadOnlyMemory <byte> rebind, out OriginatorIdentifierOrKeyAsn decoded)
        {
            decoded = default;
            Asn1Tag             tag        = reader.PeekTag();
            ReadOnlySpan <byte> rebindSpan = rebind.Span;
            int offset;
            ReadOnlySpan <byte> tmpSpan;

            if (tag.HasSameClassAndValue(Asn1Tag.Sequence))
            {
                IssuerAndSerialNumberAsn tmpIssuerAndSerialNumber;
                IssuerAndSerialNumberAsn.Decode(ref reader, rebind, out tmpIssuerAndSerialNumber);
                decoded.IssuerAndSerialNumber = tmpIssuerAndSerialNumber;
            }
            else if (tag.HasSameClassAndValue(new Asn1Tag(TagClass.ContextSpecific, 0)))
            {
                if (reader.TryReadPrimitiveOctetStringBytes(new Asn1Tag(TagClass.ContextSpecific, 0), out tmpSpan))
                {
                    decoded.SubjectKeyIdentifier = rebindSpan.Overlaps(tmpSpan, out offset) ? rebind.Slice(offset, tmpSpan.Length) : tmpSpan.ToArray();
                }
                else
                {
                    decoded.SubjectKeyIdentifier = reader.ReadOctetString(new Asn1Tag(TagClass.ContextSpecific, 0));
                }
            }
            else if (tag.HasSameClassAndValue(new Asn1Tag(TagClass.ContextSpecific, 1)))
            {
                OriginatorPublicKeyAsn tmpOriginatorKey;
                OriginatorPublicKeyAsn.Decode(ref reader, new Asn1Tag(TagClass.ContextSpecific, 1), rebind, out tmpOriginatorKey);
                decoded.OriginatorKey = tmpOriginatorKey;
            }
            else
            {
                throw new CryptographicException();
            }
        }
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        internal static void Decode(ref AsnValueReader reader, Asn1Tag expectedTag, ReadOnlyMemory <byte> rebind, out OriginatorPublicKeyAsn decoded)
        {
            decoded = default;
            AsnValueReader      sequenceReader = reader.ReadSequence(expectedTag);
            ReadOnlySpan <byte> rebindSpan     = rebind.Span;
            int offset;
            ReadOnlySpan <byte> tmpSpan;

            AlgorithmIdentifierAsn.Decode(ref sequenceReader, rebind, out decoded.Algorithm);

            if (sequenceReader.TryReadPrimitiveBitStringValue(out _, out tmpSpan))
            {
                decoded.PublicKey = rebindSpan.Overlaps(tmpSpan, out offset) ? rebind.Slice(offset, tmpSpan.Length) : tmpSpan.ToArray();
            }
            else
            {
                decoded.PublicKey = sequenceReader.ReadBitString(out _);
            }


            sequenceReader.ThrowIfNotEmpty();
        }
Esempio n. 3
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 internal static void Decode(ref AsnValueReader reader, ReadOnlyMemory <byte> rebind, out OriginatorPublicKeyAsn decoded)
 {
     Decode(ref reader, Asn1Tag.Sequence, rebind, out decoded);
 }