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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
#pragma warning disable SA1028 // ignore whitespace warnings for generated code
using System;
using System.Collections.Generic;
using System.Formats.Asn1;
using System.Runtime.InteropServices;
namespace System.Security.Cryptography.X509Certificates.Asn1
{
[StructLayout(LayoutKind.Sequential)]
internal partial struct CertificationRequestInfoAsn
{
internal System.Numerics.BigInteger Version;
internal ReadOnlyMemory<byte> Subject;
internal System.Security.Cryptography.Asn1.SubjectPublicKeyInfoAsn SubjectPublicKeyInfo;
internal System.Security.Cryptography.Asn1.AttributeAsn[] Attributes;
internal readonly void Encode(AsnWriter writer)
{
Encode(writer, Asn1Tag.Sequence);
}
internal readonly void Encode(AsnWriter writer, Asn1Tag tag)
{
writer.PushSequence(tag);
writer.WriteInteger(Version);
// Validator for tag constraint for Subject
{
if (!Asn1Tag.TryDecode(Subject.Span, out Asn1Tag validateTag, out _) ||
!validateTag.HasSameClassAndValue(new Asn1Tag((UniversalTagNumber)16)))
{
throw new CryptographicException();
}
}
try
{
writer.WriteEncodedValue(Subject.Span);
}
catch (ArgumentException e)
{
throw new CryptographicException(SR.Cryptography_Der_Invalid_Encoding, e);
}
SubjectPublicKeyInfo.Encode(writer);
writer.PushSetOf(new Asn1Tag(TagClass.ContextSpecific, 0));
for (int i = 0; i < Attributes.Length; i++)
{
Attributes[i].Encode(writer);
}
writer.PopSetOf(new Asn1Tag(TagClass.ContextSpecific, 0));
writer.PopSequence(tag);
}
internal static CertificationRequestInfoAsn Decode(ReadOnlyMemory<byte> encoded, AsnEncodingRules ruleSet)
{
return Decode(Asn1Tag.Sequence, encoded, ruleSet);
}
internal static CertificationRequestInfoAsn Decode(Asn1Tag expectedTag, ReadOnlyMemory<byte> encoded, AsnEncodingRules ruleSet)
{
try
{
ValueAsnReader reader = new ValueAsnReader(encoded.Span, ruleSet);
DecodeCore(ref reader, expectedTag, encoded, out CertificationRequestInfoAsn decoded);
reader.ThrowIfNotEmpty();
return decoded;
}
catch (AsnContentException e)
{
throw new CryptographicException(SR.Cryptography_Der_Invalid_Encoding, e);
}
}
internal static void Decode(ref ValueAsnReader reader, ReadOnlyMemory<byte> rebind, out CertificationRequestInfoAsn decoded)
{
Decode(ref reader, Asn1Tag.Sequence, rebind, out decoded);
}
internal static void Decode(ref ValueAsnReader reader, Asn1Tag expectedTag, ReadOnlyMemory<byte> rebind, out CertificationRequestInfoAsn decoded)
{
try
{
DecodeCore(ref reader, expectedTag, rebind, out decoded);
}
catch (AsnContentException e)
{
throw new CryptographicException(SR.Cryptography_Der_Invalid_Encoding, e);
}
}
private static void DecodeCore(ref ValueAsnReader reader, Asn1Tag expectedTag, ReadOnlyMemory<byte> rebind, out CertificationRequestInfoAsn decoded)
{
decoded = default;
ValueAsnReader sequenceReader = reader.ReadSequence(expectedTag);
ValueAsnReader collectionReader;
ReadOnlySpan<byte> rebindSpan = rebind.Span;
int offset;
ReadOnlySpan<byte> tmpSpan;
decoded.Version = sequenceReader.ReadInteger();
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);
// Decode SEQUENCE OF for Attributes
{
collectionReader = sequenceReader.ReadSetOf(new Asn1Tag(TagClass.ContextSpecific, 0));
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.Attributes = tmpList.ToArray();
}
sequenceReader.ThrowIfNotEmpty();
}
}
[StructLayout(LayoutKind.Sequential)]
internal ref partial struct ValueCertificationRequestInfoAsn
{
internal System.Numerics.BigInteger Version;
internal ReadOnlySpan<byte> Subject;
internal System.Security.Cryptography.Asn1.ValueSubjectPublicKeyInfoAsn SubjectPublicKeyInfo;
internal ReadOnlySpan<byte> Attributes;
internal readonly void Encode(AsnWriter writer)
{
Encode(writer, Asn1Tag.Sequence);
}
internal readonly void Encode(AsnWriter writer, Asn1Tag tag)
{
writer.PushSequence(tag);
writer.WriteInteger(Version);
// Validator for tag constraint for Subject
{
if (!Asn1Tag.TryDecode(Subject, out Asn1Tag validateTag, out _) ||
!validateTag.HasSameClassAndValue(new Asn1Tag((UniversalTagNumber)16)))
{
throw new CryptographicException();
}
}
try
{
writer.WriteEncodedValue(Subject);
}
catch (ArgumentException e)
{
throw new CryptographicException(SR.Cryptography_Der_Invalid_Encoding, e);
}
SubjectPublicKeyInfo.Encode(writer);
try
{
writer.WriteEncodedValue(Attributes);
}
catch (ArgumentException e)
{
throw new CryptographicException(SR.Cryptography_Der_Invalid_Encoding, e);
}
writer.PopSequence(tag);
}
internal static void Decode(ReadOnlySpan<byte> encoded, AsnEncodingRules ruleSet, out ValueCertificationRequestInfoAsn decoded)
{
Decode(Asn1Tag.Sequence, encoded, ruleSet, out decoded);
}
internal static void Decode(Asn1Tag expectedTag, ReadOnlySpan<byte> encoded, AsnEncodingRules ruleSet, out ValueCertificationRequestInfoAsn decoded)
{
try
{
ValueAsnReader reader = new ValueAsnReader(encoded, ruleSet);
DecodeCore(ref reader, expectedTag, out decoded);
reader.ThrowIfNotEmpty();
}
catch (AsnContentException e)
{
throw new CryptographicException(SR.Cryptography_Der_Invalid_Encoding, e);
}
}
internal static void Decode(scoped ref ValueAsnReader reader, out ValueCertificationRequestInfoAsn decoded)
{
Decode(ref reader, Asn1Tag.Sequence, out decoded);
}
internal static void Decode(scoped ref ValueAsnReader reader, Asn1Tag expectedTag, out ValueCertificationRequestInfoAsn decoded)
{
try
{
DecodeCore(ref reader, expectedTag, out decoded);
}
catch (AsnContentException e)
{
throw new CryptographicException(SR.Cryptography_Der_Invalid_Encoding, e);
}
}
private static void DecodeCore(scoped ref ValueAsnReader reader, Asn1Tag expectedTag, out ValueCertificationRequestInfoAsn decoded)
{
decoded = default;
ValueAsnReader sequenceReader = reader.ReadSequence(expectedTag);
decoded.Version = sequenceReader.ReadInteger();
if (!sequenceReader.PeekTag().HasSameClassAndValue(new Asn1Tag((UniversalTagNumber)16)))
{
throw new CryptographicException();
}
decoded.Subject = sequenceReader.ReadEncodedValue();
System.Security.Cryptography.Asn1.ValueSubjectPublicKeyInfoAsn.Decode(ref sequenceReader, out decoded.SubjectPublicKeyInfo);
if (!sequenceReader.PeekTag().HasSameClassAndValue(new Asn1Tag(TagClass.ContextSpecific, 0)))
{
throw new CryptographicException(SR.Cryptography_Der_Invalid_Encoding);
}
decoded.Attributes = sequenceReader.ReadEncodedValue();
sequenceReader.ThrowIfNotEmpty();
}
internal AttributesEnumerable GetAttributes(AsnEncodingRules ruleSet)
{
return new AttributesEnumerable(Attributes, ruleSet);
}
internal readonly ref struct AttributesEnumerable
{
private readonly ReadOnlySpan<byte> _encoded;
private readonly AsnEncodingRules _ruleSet;
internal AttributesEnumerable(ReadOnlySpan<byte> encoded, AsnEncodingRules ruleSet)
{
_encoded = encoded;
_ruleSet = ruleSet;
}
public Enumerator GetEnumerator() => new Enumerator(_encoded, _ruleSet);
internal ref struct Enumerator
{
private ValueAsnReader _reader;
private System.Security.Cryptography.Asn1.ValueAttributeAsn _current;
internal Enumerator(ReadOnlySpan<byte> encoded, AsnEncodingRules ruleSet)
{
if (!encoded.IsEmpty)
{
ValueAsnReader outerReader = new ValueAsnReader(encoded, ruleSet);
_reader = outerReader.ReadSetOf(new Asn1Tag(TagClass.ContextSpecific, 0));
outerReader.ThrowIfNotEmpty();
}
_current = default;
}
public System.Security.Cryptography.Asn1.ValueAttributeAsn Current => _current;
public bool MoveNext()
{
if (!_reader.HasData)
{
return false;
}
System.Security.Cryptography.Asn1.ValueAttributeAsn.Decode(ref _reader, out _current);
return true;
}
}
}
}
}
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