BraintreeEncryption.Library.BouncyCastle.Asn1.Asn1InputStream.CreatePrimitiveDerObject C# (CSharp) Method

        internal static Asn1Object CreatePrimitiveDerObject(
            int tagNo,
            byte[] bytes)
        {
            switch (tagNo)
            {
                case Asn1Tags.BitString:
                    return DerBitString.FromAsn1Octets(bytes);
                case Asn1Tags.BmpString:
                    return new DerBmpString(bytes);
                case Asn1Tags.Boolean:
                    return new DerBoolean(bytes);
                case Asn1Tags.Enumerated:
                    return new DerEnumerated(bytes);
                case Asn1Tags.GeneralizedTime:
                    return new DerGeneralizedTime(bytes);
                case Asn1Tags.GeneralString:
                    return new DerGeneralString(bytes);
                case Asn1Tags.IA5String:
                    return new DerIA5String(bytes);
                case Asn1Tags.Integer:
                    return new DerInteger(bytes);
                case Asn1Tags.Null:
                    return DerNull.Instance;   // actual content is ignored (enforce 0 length?)
                case Asn1Tags.NumericString:
                    return new DerNumericString(bytes);
                case Asn1Tags.ObjectIdentifier:
                    return new DerObjectIdentifier(bytes);
                case Asn1Tags.OctetString:
                    return new DerOctetString(bytes);
                case Asn1Tags.PrintableString:
                    return new DerPrintableString(bytes);
                case Asn1Tags.T61String:
                    return new DerT61String(bytes);
                case Asn1Tags.UniversalString:
                    return new DerUniversalString(bytes);
                case Asn1Tags.UtcTime:
                    return new DerUtcTime(bytes);
                case Asn1Tags.Utf8String:
                    return new DerUtf8String(bytes);
                case Asn1Tags.VisibleString:
                    return new DerVisibleString(bytes);
                default:
                    return new DerUnknownTag(false, tagNo, bytes);
            }
        }

        public virtual IAsn1Convertible ReadObject()
        {
            int tag = _in.ReadByte();

            if (tag == -1)
            {
                return(null);
            }

            // turn of looking for "00" while we resolve the tag
            Set00Check(false);

            //
            // calculate tag number
            //
            int tagNo = Asn1InputStream.ReadTagNumber(_in, tag);

            bool isConstructed = (tag & Asn1Tags.Constructed) != 0;

            //
            // calculate length
            //
            int length = Asn1InputStream.ReadLength(_in, _limit);

            if (length < 0)             // indefinite length method
            {
                if (!isConstructed)
                {
                    throw new IOException("indefinite length primitive encoding encountered");
                }

                IndefiniteLengthInputStream indIn = new IndefiniteLengthInputStream(_in, _limit);
                Asn1StreamParser            sp    = new Asn1StreamParser(indIn, _limit);

                if ((tag & Asn1Tags.Application) != 0)
                {
                    return(new BerApplicationSpecificParser(tagNo, sp));
                }

                if ((tag & Asn1Tags.Tagged) != 0)
                {
                    return(new BerTaggedObjectParser(true, tagNo, sp));
                }

                return(sp.ReadIndef(tagNo));
            }
            else
            {
                DefiniteLengthInputStream defIn = new DefiniteLengthInputStream(_in, length);

                if ((tag & Asn1Tags.Application) != 0)
                {
                    return(new DerApplicationSpecific(isConstructed, tagNo, defIn.ToArray()));
                }

                if ((tag & Asn1Tags.Tagged) != 0)
                {
                    return(new BerTaggedObjectParser(isConstructed, tagNo, new Asn1StreamParser(defIn)));
                }

                if (isConstructed)
                {
                    // TODO There are other tags that may be constructed (e.g. BitString)
                    switch (tagNo)
                    {
                    case Asn1Tags.OctetString:
                        //
                        // yes, people actually do this...
                        //
                        return(new BerOctetStringParser(new Asn1StreamParser(defIn)));

                    case Asn1Tags.Sequence:
                        return(new DerSequenceParser(new Asn1StreamParser(defIn)));

                    case Asn1Tags.Set:
                        return(new DerSetParser(new Asn1StreamParser(defIn)));

                    case Asn1Tags.External:
                        return(new DerExternalParser(new Asn1StreamParser(defIn)));

                    default:
                        // TODO Add DerUnknownTagParser class?
                        return(new DerUnknownTag(true, tagNo, defIn.ToArray()));
                    }
                }

                // Some primitive encodings can be handled by parsers too...
                switch (tagNo)
                {
                case Asn1Tags.OctetString:
                    return(new DerOctetStringParser(defIn));
                }

                try
                {
                    return(Asn1InputStream.CreatePrimitiveDerObject(tagNo, defIn.ToArray()));
                }
                catch (ArgumentException e)
                {
                    throw new Asn1Exception("corrupted stream detected", e);
                }
            }
        }