internal static void Decode(AsnReader reader, out MacData decoded) { if (reader == null) { throw new ArgumentNullException(nameof(reader)); } Decode(reader, Asn1Tag.Sequence, out decoded); }
static MacData() { MacData decoded = default; AsnReader reader; reader = new AsnReader(s_defaultIterationCount, AsnEncodingRules.DER); if (!reader.TryReadInt32(out decoded.IterationCount)) { reader.ThrowIfNotEmpty(); } reader.ThrowIfNotEmpty(); }
internal static void Decode(AsnReader reader, Asn1Tag expectedTag, out MacData decoded) { if (reader == null) { throw new ArgumentNullException(nameof(reader)); } decoded = default; AsnReader sequenceReader = reader.ReadSequence(expectedTag); AsnReader defaultReader; System.Security.Cryptography.Asn1.DigestInfoAsn.Decode(sequenceReader, out decoded.Mac); if (sequenceReader.TryReadPrimitiveOctetStringBytes(out ReadOnlyMemory <byte> tmpMacSalt)) { decoded.MacSalt = tmpMacSalt; } else { decoded.MacSalt = sequenceReader.ReadOctetString(); } if (sequenceReader.HasData && sequenceReader.PeekTag().HasSameClassAndValue(Asn1Tag.Integer)) { if (!sequenceReader.TryReadInt32(out decoded.IterationCount)) { sequenceReader.ThrowIfNotEmpty(); } } else { defaultReader = new AsnReader(s_defaultIterationCount, AsnEncodingRules.DER); if (!defaultReader.TryReadInt32(out decoded.IterationCount)) { defaultReader.ThrowIfNotEmpty(); } } sequenceReader.ThrowIfNotEmpty(); }
internal static void Decode(ref AsnValueReader reader, Asn1Tag expectedTag, ReadOnlyMemory <byte> rebind, out MacData decoded) { try { DecodeCore(ref reader, expectedTag, rebind, out decoded); } catch (AsnContentException e) { throw new CryptographicException(SR.Cryptography_Der_Invalid_Encoding, e); } }
internal static void Decode(ref AsnValueReader reader, ReadOnlyMemory <byte> rebind, out MacData decoded) { Decode(ref reader, Asn1Tag.Sequence, rebind, out decoded); }
private static void DecodeCore(ref AsnValueReader reader, Asn1Tag expectedTag, ReadOnlyMemory <byte> rebind, out MacData decoded) { decoded = default; AsnValueReader sequenceReader = reader.ReadSequence(expectedTag); AsnValueReader defaultReader; ReadOnlySpan <byte> rebindSpan = rebind.Span; int offset; ReadOnlySpan <byte> tmpSpan; System.Security.Cryptography.Asn1.DigestInfoAsn.Decode(ref sequenceReader, rebind, out decoded.Mac); if (sequenceReader.TryReadPrimitiveOctetString(out tmpSpan)) { decoded.MacSalt = rebindSpan.Overlaps(tmpSpan, out offset) ? rebind.Slice(offset, tmpSpan.Length) : tmpSpan.ToArray(); } else { decoded.MacSalt = sequenceReader.ReadOctetString(); } if (sequenceReader.HasData && sequenceReader.PeekTag().HasSameClassAndValue(Asn1Tag.Integer)) { if (!sequenceReader.TryReadInt32(out decoded.IterationCount)) { sequenceReader.ThrowIfNotEmpty(); } } else { defaultReader = new AsnValueReader(DefaultIterationCount, AsnEncodingRules.DER); if (!defaultReader.TryReadInt32(out decoded.IterationCount)) { defaultReader.ThrowIfNotEmpty(); } } sequenceReader.ThrowIfNotEmpty(); }