CertificationRequestInfoAsn.cs

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using System.Formats.Asn1;
using System.Numerics;
using System.Security.Cryptography.Asn1;
 
namespace System.Security.Cryptography.X509Certificates.Asn1;
 
internal struct CertificationRequestInfoAsn
{
    internal BigInteger Version;
 
    internal ReadOnlyMemory<byte> Subject;
 
    internal System.Security.Cryptography.Asn1.SubjectPublicKeyInfoAsn SubjectPublicKeyInfo;
 
    internal System.Security.Cryptography.Asn1.AttributeAsn[] Attributes;
 
    internal void Encode(AsnWriter writer)
    {
        Encode(writer, Asn1Tag.Sequence);
    }
 
    internal void Encode(AsnWriter writer, Asn1Tag tag)
    {
        writer.PushSequence(tag);
        writer.WriteInteger(Version);
        if (!Asn1Tag.TryDecode(Subject.Span, out var tag2, out var _) || !tag2.HasSameClassAndValue(new Asn1Tag(UniversalTagNumber.Sequence)))
        {
            throw new CryptographicException();
        }
        try
        {
            writer.WriteEncodedValue(Subject.Span);
        }
        catch (ArgumentException inner)
        {
            throw new CryptographicException(System.SR.Cryptography_Der_Invalid_Encoding, inner);
        }
        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);
    }
}