init commit

output/Libraries/BouncyCastle.Crypto/Org/BouncyCastle/Asn1/X509/X509CertificateStructure.cs

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+using System;
+
+namespace Org.BouncyCastle.Asn1.X509;
+
+public class X509CertificateStructure : Asn1Encodable
+{
+	private readonly TbsCertificateStructure tbsCert;
+
+	private readonly AlgorithmIdentifier sigAlgID;
+
+	private readonly DerBitString sig;
+
+	public TbsCertificateStructure TbsCertificate => tbsCert;
+
+	public int Version => tbsCert.Version;
+
+	public DerInteger SerialNumber => tbsCert.SerialNumber;
+
+	public X509Name Issuer => tbsCert.Issuer;
+
+	public Time StartDate => tbsCert.StartDate;
+
+	public Time EndDate => tbsCert.EndDate;
+
+	public X509Name Subject => tbsCert.Subject;
+
+	public SubjectPublicKeyInfo SubjectPublicKeyInfo => tbsCert.SubjectPublicKeyInfo;
+
+	public AlgorithmIdentifier SignatureAlgorithm => sigAlgID;
+
+	public DerBitString Signature => sig;
+
+	public static X509CertificateStructure GetInstance(Asn1TaggedObject obj, bool explicitly)
+	{
+		return GetInstance(Asn1Sequence.GetInstance(obj, explicitly));
+	}
+
+	public static X509CertificateStructure GetInstance(object obj)
+	{
+		if (obj is X509CertificateStructure)
+		{
+			return (X509CertificateStructure)obj;
+		}
+		if (obj == null)
+		{
+			return null;
+		}
+		return new X509CertificateStructure(Asn1Sequence.GetInstance(obj));
+	}
+
+	public X509CertificateStructure(TbsCertificateStructure tbsCert, AlgorithmIdentifier sigAlgID, DerBitString sig)
+	{
+		if (tbsCert == null)
+		{
+			throw new ArgumentNullException("tbsCert");
+		}
+		if (sigAlgID == null)
+		{
+			throw new ArgumentNullException("sigAlgID");
+		}
+		if (sig == null)
+		{
+			throw new ArgumentNullException("sig");
+		}
+		this.tbsCert = tbsCert;
+		this.sigAlgID = sigAlgID;
+		this.sig = sig;
+	}
+
+	private X509CertificateStructure(Asn1Sequence seq)
+	{
+		if (seq.Count != 3)
+		{
+			throw new ArgumentException("sequence wrong size for a certificate", "seq");
+		}
+		tbsCert = TbsCertificateStructure.GetInstance(seq[0]);
+		sigAlgID = AlgorithmIdentifier.GetInstance(seq[1]);
+		sig = DerBitString.GetInstance(seq[2]);
+	}
+
+	public byte[] GetSignatureOctets()
+	{
+		return sig.GetOctets();
+	}
+
+	public override Asn1Object ToAsn1Object()
+	{
+		return new DerSequence(tbsCert, sigAlgID, sig);
+	}
+}