init commit

output/Libraries/BouncyCastle.Crypto/Org/BouncyCastle/Crypto/Tls/DefaultTlsEncryptionCredentials.cs

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+using System;
+using Org.BouncyCastle.Crypto.Parameters;
+using Org.BouncyCastle.Utilities;
+
+namespace Org.BouncyCastle.Crypto.Tls;
+
+public class DefaultTlsEncryptionCredentials : AbstractTlsEncryptionCredentials
+{
+	protected readonly TlsContext mContext;
+
+	protected readonly Certificate mCertificate;
+
+	protected readonly AsymmetricKeyParameter mPrivateKey;
+
+	public override Certificate Certificate => mCertificate;
+
+	public DefaultTlsEncryptionCredentials(TlsContext context, Certificate certificate, AsymmetricKeyParameter privateKey)
+	{
+		if (certificate == null)
+		{
+			throw new ArgumentNullException("certificate");
+		}
+		if (certificate.IsEmpty)
+		{
+			throw new ArgumentException("cannot be empty", "certificate");
+		}
+		if (privateKey == null)
+		{
+			throw new ArgumentNullException("'privateKey' cannot be null");
+		}
+		if (!privateKey.IsPrivate)
+		{
+			throw new ArgumentException("must be private", "privateKey");
+		}
+		if (!(privateKey is RsaKeyParameters))
+		{
+			throw new ArgumentException("type not supported: " + Platform.GetTypeName(privateKey), "privateKey");
+		}
+		mContext = context;
+		mCertificate = certificate;
+		mPrivateKey = privateKey;
+	}
+
+	public override byte[] DecryptPreMasterSecret(byte[] encryptedPreMasterSecret)
+	{
+		return TlsRsaUtilities.SafeDecryptPreMasterSecret(mContext, (RsaKeyParameters)mPrivateKey, encryptedPreMasterSecret);
+	}
+}