internal static void Decode(ref AsnValueReader reader, Asn1Tag expectedTag, ReadOnlyMemory <byte> rebind, out KeyAgreeRecipientInfoAsn decoded) { decoded = default; AsnValueReader sequenceReader = reader.ReadSequence(expectedTag); AsnValueReader explicitReader; AsnValueReader collectionReader; ReadOnlySpan <byte> rebindSpan = rebind.Span; int offset; ReadOnlySpan <byte> tmpSpan; if (!sequenceReader.TryReadInt32(out decoded.Version)) { sequenceReader.ThrowIfNotEmpty(); } explicitReader = sequenceReader.ReadSequence(new Asn1Tag(TagClass.ContextSpecific, 0)); OriginatorIdentifierOrKeyAsn.Decode(ref explicitReader, rebind, out decoded.Originator); explicitReader.ThrowIfNotEmpty(); if (sequenceReader.HasData && sequenceReader.PeekTag().HasSameClassAndValue(new Asn1Tag(TagClass.ContextSpecific, 1))) { explicitReader = sequenceReader.ReadSequence(new Asn1Tag(TagClass.ContextSpecific, 1)); if (explicitReader.TryReadPrimitiveOctetStringBytes(out tmpSpan)) { decoded.Ukm = rebindSpan.Overlaps(tmpSpan, out offset) ? rebind.Slice(offset, tmpSpan.Length) : tmpSpan.ToArray(); } else { decoded.Ukm = explicitReader.ReadOctetString(); } explicitReader.ThrowIfNotEmpty(); } AlgorithmIdentifierAsn.Decode(ref sequenceReader, rebind, out decoded.KeyEncryptionAlgorithm); // Decode SEQUENCE OF for RecipientEncryptedKeys { collectionReader = sequenceReader.ReadSequence(); var tmpList = new List <RecipientEncryptedKeyAsn>(); RecipientEncryptedKeyAsn tmpItem; while (collectionReader.HasData) { RecipientEncryptedKeyAsn.Decode(ref collectionReader, rebind, out tmpItem); tmpList.Add(tmpItem); } decoded.RecipientEncryptedKeys = tmpList.ToArray(); } sequenceReader.ThrowIfNotEmpty(); }
internal static void Decode(ref AsnValueReader reader, Asn1Tag expectedTag, ReadOnlyMemory <byte> rebind, out RecipientEncryptedKeyAsn decoded) { decoded = default; AsnValueReader sequenceReader = reader.ReadSequence(expectedTag); ReadOnlySpan <byte> rebindSpan = rebind.Span; int offset; ReadOnlySpan <byte> tmpSpan; KeyAgreeRecipientIdentifierAsn.Decode(ref sequenceReader, rebind, out decoded.Rid); if (sequenceReader.TryReadPrimitiveOctetStringBytes(out tmpSpan)) { decoded.EncryptedKey = rebindSpan.Overlaps(tmpSpan, out offset) ? rebind.Slice(offset, tmpSpan.Length) : tmpSpan.ToArray(); } else { decoded.EncryptedKey = sequenceReader.ReadOctetString(); } sequenceReader.ThrowIfNotEmpty(); }
internal static void Decode(ref AsnValueReader reader, ReadOnlyMemory <byte> rebind, out RecipientEncryptedKeyAsn decoded) { Decode(ref reader, Asn1Tag.Sequence, rebind, out decoded); }