예제 #1
0
        public byte[] ReadBitString(Asn1Tag expectedTag, out int unusedBitCount)
        {
            AsnValueReader valueReader = OpenValueReader();

            byte[] ret = valueReader.ReadBitString(expectedTag, out unusedBitCount);
            valueReader.MatchSlice(ref _data);
            return(ret);
        }
예제 #2
0
        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();
        }
예제 #3
0
        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;

            Medikit.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();
        }