init commit

output/Libraries/BouncyCastle.Crypto/Org/BouncyCastle/X509/PrincipalUtilities.cs

@@ -0,0 +1,48 @@
+using System;
+using Org.BouncyCastle.Asn1;
+using Org.BouncyCastle.Asn1.X509;
+using Org.BouncyCastle.Security.Certificates;
+
+namespace Org.BouncyCastle.X509;
+
+public class PrincipalUtilities
+{
+	public static X509Name GetIssuerX509Principal(X509Certificate cert)
+	{
+		try
+		{
+			TbsCertificateStructure instance = TbsCertificateStructure.GetInstance(Asn1Object.FromByteArray(cert.GetTbsCertificate()));
+			return instance.Issuer;
+		}
+		catch (Exception e)
+		{
+			throw new CertificateEncodingException("Could not extract issuer", e);
+		}
+	}
+
+	public static X509Name GetSubjectX509Principal(X509Certificate cert)
+	{
+		try
+		{
+			TbsCertificateStructure instance = TbsCertificateStructure.GetInstance(Asn1Object.FromByteArray(cert.GetTbsCertificate()));
+			return instance.Subject;
+		}
+		catch (Exception e)
+		{
+			throw new CertificateEncodingException("Could not extract subject", e);
+		}
+	}
+
+	public static X509Name GetIssuerX509Principal(X509Crl crl)
+	{
+		try
+		{
+			TbsCertificateList instance = TbsCertificateList.GetInstance(Asn1Object.FromByteArray(crl.GetTbsCertList()));
+			return instance.Issuer;
+		}
+		catch (Exception e)
+		{
+			throw new CrlException("Could not extract issuer", e);
+		}
+	}
+}