internal static void Decode(AsnReader reader, out TbsCertificateAsn decoded) { if (reader == null) { throw new ArgumentNullException(nameof(reader)); } Decode(reader, Asn1Tag.Sequence, out decoded); }
static TbsCertificateAsn() { TbsCertificateAsn decoded = default; AsnReader reader; reader = new AsnReader(s_defaultVersion, AsnEncodingRules.DER); if (!reader.TryReadInt32(out decoded.Version)) { reader.ThrowIfNotEmpty(); } reader.ThrowIfNotEmpty(); }
internal static void Decode(AsnReader reader, Asn1Tag expectedTag, out TbsCertificateAsn decoded) { if (reader == null) { throw new ArgumentNullException(nameof(reader)); } decoded = default; AsnReader sequenceReader = reader.ReadSequence(expectedTag); AsnReader explicitReader; AsnReader defaultReader; AsnReader collectionReader; if (sequenceReader.HasData && sequenceReader.PeekTag().HasSameClassAndValue(new Asn1Tag(TagClass.ContextSpecific, 0))) { explicitReader = sequenceReader.ReadSequence(new Asn1Tag(TagClass.ContextSpecific, 0)); if (!explicitReader.TryReadInt32(out decoded.Version)) { explicitReader.ThrowIfNotEmpty(); } explicitReader.ThrowIfNotEmpty(); } else { defaultReader = new AsnReader(s_defaultVersion, AsnEncodingRules.DER); if (!defaultReader.TryReadInt32(out decoded.Version)) { defaultReader.ThrowIfNotEmpty(); } } decoded.SerialNumber = sequenceReader.ReadIntegerBytes(); System.Security.Cryptography.Asn1.AlgorithmIdentifierAsn.Decode(sequenceReader, out decoded.SignatureAlgorithm); if (!sequenceReader.PeekTag().HasSameClassAndValue(new Asn1Tag((UniversalTagNumber)16))) { throw new CryptographicException(); } decoded.Issuer = sequenceReader.ReadEncodedValue(); System.Security.Cryptography.X509Certificates.Asn1.ValidityAsn.Decode(sequenceReader, out decoded.Validity); if (!sequenceReader.PeekTag().HasSameClassAndValue(new Asn1Tag((UniversalTagNumber)16))) { throw new CryptographicException(); } decoded.Subject = sequenceReader.ReadEncodedValue(); System.Security.Cryptography.Asn1.SubjectPublicKeyInfoAsn.Decode(sequenceReader, out decoded.SubjectPublicKeyInfo); if (sequenceReader.HasData && sequenceReader.PeekTag().HasSameClassAndValue(new Asn1Tag(TagClass.ContextSpecific, 1))) { if (sequenceReader.TryReadPrimitiveBitStringValue(new Asn1Tag(TagClass.ContextSpecific, 1), out _, out ReadOnlyMemory <byte> tmpIssuerUniqueId)) { decoded.IssuerUniqueId = tmpIssuerUniqueId; } else { decoded.IssuerUniqueId = sequenceReader.ReadBitString(new Asn1Tag(TagClass.ContextSpecific, 1), out _); } } if (sequenceReader.HasData && sequenceReader.PeekTag().HasSameClassAndValue(new Asn1Tag(TagClass.ContextSpecific, 2))) { if (sequenceReader.TryReadPrimitiveBitStringValue(new Asn1Tag(TagClass.ContextSpecific, 2), out _, out ReadOnlyMemory <byte> tmpSubjectUniqueId)) { decoded.SubjectUniqueId = tmpSubjectUniqueId; } else { decoded.SubjectUniqueId = sequenceReader.ReadBitString(new Asn1Tag(TagClass.ContextSpecific, 2), out _); } } if (sequenceReader.HasData && sequenceReader.PeekTag().HasSameClassAndValue(new Asn1Tag(TagClass.ContextSpecific, 3))) { explicitReader = sequenceReader.ReadSequence(new Asn1Tag(TagClass.ContextSpecific, 3)); // Decode SEQUENCE OF for Extensions { collectionReader = explicitReader.ReadSequence(); var tmpList = new List <System.Security.Cryptography.Asn1.X509ExtensionAsn>(); System.Security.Cryptography.Asn1.X509ExtensionAsn tmpItem; while (collectionReader.HasData) { System.Security.Cryptography.Asn1.X509ExtensionAsn.Decode(collectionReader, out tmpItem); tmpList.Add(tmpItem); } decoded.Extensions = tmpList.ToArray(); } explicitReader.ThrowIfNotEmpty(); } sequenceReader.ThrowIfNotEmpty(); }
private static void DecodeCore(ref AsnValueReader reader, Asn1Tag expectedTag, ReadOnlyMemory <byte> rebind, out TbsCertificateAsn decoded) { decoded = default; AsnValueReader sequenceReader = reader.ReadSequence(expectedTag); AsnValueReader explicitReader; AsnValueReader defaultReader; AsnValueReader collectionReader; ReadOnlySpan <byte> rebindSpan = rebind.Span; int offset; ReadOnlySpan <byte> tmpSpan; if (sequenceReader.HasData && sequenceReader.PeekTag().HasSameClassAndValue(new Asn1Tag(TagClass.ContextSpecific, 0))) { explicitReader = sequenceReader.ReadSequence(new Asn1Tag(TagClass.ContextSpecific, 0)); if (!explicitReader.TryReadInt32(out decoded.Version)) { explicitReader.ThrowIfNotEmpty(); } explicitReader.ThrowIfNotEmpty(); } else { defaultReader = new AsnValueReader(DefaultVersion, AsnEncodingRules.DER); if (!defaultReader.TryReadInt32(out decoded.Version)) { defaultReader.ThrowIfNotEmpty(); } } tmpSpan = sequenceReader.ReadIntegerBytes(); decoded.SerialNumber = 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.PeekTag().HasSameClassAndValue(new Asn1Tag((UniversalTagNumber)16))) { throw new CryptographicException(); } tmpSpan = sequenceReader.ReadEncodedValue(); decoded.Issuer = rebindSpan.Overlaps(tmpSpan, out offset) ? rebind.Slice(offset, tmpSpan.Length) : tmpSpan.ToArray(); System.Security.Cryptography.X509Certificates.Asn1.ValidityAsn.Decode(ref sequenceReader, rebind, out decoded.Validity); if (!sequenceReader.PeekTag().HasSameClassAndValue(new Asn1Tag((UniversalTagNumber)16))) { throw new CryptographicException(); } tmpSpan = sequenceReader.ReadEncodedValue(); decoded.Subject = rebindSpan.Overlaps(tmpSpan, out offset) ? rebind.Slice(offset, tmpSpan.Length) : tmpSpan.ToArray(); System.Security.Cryptography.Asn1.SubjectPublicKeyInfoAsn.Decode(ref sequenceReader, rebind, out decoded.SubjectPublicKeyInfo); if (sequenceReader.HasData && sequenceReader.PeekTag().HasSameClassAndValue(new Asn1Tag(TagClass.ContextSpecific, 1))) { if (sequenceReader.TryReadPrimitiveBitString(out _, out tmpSpan, new Asn1Tag(TagClass.ContextSpecific, 1))) { decoded.IssuerUniqueId = rebindSpan.Overlaps(tmpSpan, out offset) ? rebind.Slice(offset, tmpSpan.Length) : tmpSpan.ToArray(); } else { decoded.IssuerUniqueId = sequenceReader.ReadBitString(out _, new Asn1Tag(TagClass.ContextSpecific, 1)); } } if (sequenceReader.HasData && sequenceReader.PeekTag().HasSameClassAndValue(new Asn1Tag(TagClass.ContextSpecific, 2))) { if (sequenceReader.TryReadPrimitiveBitString(out _, out tmpSpan, new Asn1Tag(TagClass.ContextSpecific, 2))) { decoded.SubjectUniqueId = rebindSpan.Overlaps(tmpSpan, out offset) ? rebind.Slice(offset, tmpSpan.Length) : tmpSpan.ToArray(); } else { decoded.SubjectUniqueId = sequenceReader.ReadBitString(out _, new Asn1Tag(TagClass.ContextSpecific, 2)); } } if (sequenceReader.HasData && sequenceReader.PeekTag().HasSameClassAndValue(new Asn1Tag(TagClass.ContextSpecific, 3))) { explicitReader = sequenceReader.ReadSequence(new Asn1Tag(TagClass.ContextSpecific, 3)); // Decode SEQUENCE OF for Extensions { collectionReader = explicitReader.ReadSequence(); var tmpList = new List <System.Security.Cryptography.Asn1.X509ExtensionAsn>(); System.Security.Cryptography.Asn1.X509ExtensionAsn tmpItem; while (collectionReader.HasData) { System.Security.Cryptography.Asn1.X509ExtensionAsn.Decode(ref collectionReader, rebind, out tmpItem); tmpList.Add(tmpItem); } decoded.Extensions = tmpList.ToArray(); } explicitReader.ThrowIfNotEmpty(); } sequenceReader.ThrowIfNotEmpty(); }
internal static void Decode(ref AsnValueReader reader, Asn1Tag expectedTag, ReadOnlyMemory <byte> rebind, out TbsCertificateAsn 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 TbsCertificateAsn decoded) { Decode(ref reader, Asn1Tag.Sequence, rebind, out decoded); }