internal static void Decode(AsnReader reader, Asn1Tag expectedTag, out SignerInfoAsn decoded)
        {
            if (reader == null)
            {
                throw new ArgumentNullException(nameof(reader));
            }

            decoded = default;
            AsnReader sequenceReader = reader.ReadSequence(expectedTag);
            AsnReader collectionReader;


            if (!sequenceReader.TryReadInt32(out decoded.Version))
            {
                sequenceReader.ThrowIfNotEmpty();
            }

            System.Security.Cryptography.Pkcs.Asn1.SignerIdentifierAsn.Decode(sequenceReader, out decoded.Sid);
            System.Security.Cryptography.Asn1.AlgorithmIdentifierAsn.Decode(sequenceReader, out decoded.DigestAlgorithm);

            if (sequenceReader.HasData && sequenceReader.PeekTag().HasSameClassAndValue(new Asn1Tag(TagClass.ContextSpecific, 0)))
            {
                decoded.SignedAttributes = sequenceReader.ReadEncodedValue();
            }

            System.Security.Cryptography.Asn1.AlgorithmIdentifierAsn.Decode(sequenceReader, out decoded.SignatureAlgorithm);

            if (sequenceReader.TryReadPrimitiveOctetStringBytes(out ReadOnlyMemory <byte> tmpSignatureValue))
            {
                decoded.SignatureValue = tmpSignatureValue;
            }
            else
            {
                decoded.SignatureValue = sequenceReader.ReadOctetString();
            }


            if (sequenceReader.HasData && sequenceReader.PeekTag().HasSameClassAndValue(new Asn1Tag(TagClass.ContextSpecific, 1)))
            {
                // Decode SEQUENCE OF for UnsignedAttributes
                {
                    collectionReader = sequenceReader.ReadSetOf(new Asn1Tag(TagClass.ContextSpecific, 1));
                    var tmpList = new List <System.Security.Cryptography.Asn1.AttributeAsn>();
                    System.Security.Cryptography.Asn1.AttributeAsn tmpItem;

                    while (collectionReader.HasData)
                    {
                        System.Security.Cryptography.Asn1.AttributeAsn.Decode(collectionReader, out tmpItem);
                        tmpList.Add(tmpItem);
                    }

                    decoded.UnsignedAttributes = tmpList.ToArray();
                }
            }


            sequenceReader.ThrowIfNotEmpty();
        }
        internal static void Decode(AsnReader reader, out SignerInfoAsn decoded)
        {
            if (reader == null)
            {
                throw new ArgumentNullException(nameof(reader));
            }

            Decode(reader, Asn1Tag.Sequence, out decoded);
        }
Exemple #3
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 internal static void Decode(ref AsnValueReader reader, ReadOnlyMemory <byte> rebind, out SignerInfoAsn decoded)
 {
     Decode(ref reader, Asn1Tag.Sequence, rebind, out decoded);
 }
Exemple #4
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        internal static void Decode(ref AsnValueReader reader, Asn1Tag expectedTag, ReadOnlyMemory <byte> rebind, out SignerInfoAsn decoded)
        {
            decoded = default;
            AsnValueReader      sequenceReader = reader.ReadSequence(expectedTag);
            AsnValueReader      collectionReader;
            ReadOnlySpan <byte> rebindSpan = rebind.Span;
            int offset;
            ReadOnlySpan <byte> tmpSpan;


            if (!sequenceReader.TryReadInt32(out decoded.Version))
            {
                sequenceReader.ThrowIfNotEmpty();
            }

            System.Security.Cryptography.Pkcs.Asn1.SignerIdentifierAsn.Decode(ref sequenceReader, rebind, out decoded.Sid);
            System.Security.Cryptography.Asn1.AlgorithmIdentifierAsn.Decode(ref sequenceReader, rebind, out decoded.DigestAlgorithm);

            if (sequenceReader.HasData && sequenceReader.PeekTag().HasSameClassAndValue(new Asn1Tag(TagClass.ContextSpecific, 0)))
            {
                tmpSpan = sequenceReader.ReadEncodedValue();
                decoded.SignedAttributes = rebindSpan.Overlaps(tmpSpan, out offset) ? rebind.Slice(offset, tmpSpan.Length) : tmpSpan.ToArray();
            }

            System.Security.Cryptography.Asn1.AlgorithmIdentifierAsn.Decode(ref sequenceReader, rebind, out decoded.SignatureAlgorithm);

            if (sequenceReader.TryReadPrimitiveOctetStringBytes(out tmpSpan))
            {
                decoded.SignatureValue = rebindSpan.Overlaps(tmpSpan, out offset) ? rebind.Slice(offset, tmpSpan.Length) : tmpSpan.ToArray();
            }
            else
            {
                decoded.SignatureValue = sequenceReader.ReadOctetString();
            }


            if (sequenceReader.HasData && sequenceReader.PeekTag().HasSameClassAndValue(new Asn1Tag(TagClass.ContextSpecific, 1)))
            {
                // Decode SEQUENCE OF for UnsignedAttributes
                {
                    collectionReader = sequenceReader.ReadSetOf(new Asn1Tag(TagClass.ContextSpecific, 1));
                    var tmpList = new List <System.Security.Cryptography.Asn1.AttributeAsn>();
                    System.Security.Cryptography.Asn1.AttributeAsn tmpItem;

                    while (collectionReader.HasData)
                    {
                        System.Security.Cryptography.Asn1.AttributeAsn.Decode(ref collectionReader, rebind, out tmpItem);
                        tmpList.Add(tmpItem);
                    }

                    decoded.UnsignedAttributes = tmpList.ToArray();
                }
            }


            sequenceReader.ThrowIfNotEmpty();
        }
 internal static void Decode(ref AsnValueReader reader, Asn1Tag expectedTag, ReadOnlyMemory <byte> rebind, out SignerInfoAsn decoded)
 {
     try
     {
         DecodeCore(ref reader, expectedTag, rebind, out decoded);
     }
     catch (AsnContentException e)
     {
         throw new CryptographicException(SR.Cryptography_Der_Invalid_Encoding, e);
     }
 }