Convert the Base64 keys to xml

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using System;
using System.Security.Cryptography;
using System.Text;
using System.Xml;

public class Base64ToXmlConverter
{
    public static string ConvertToXmlString(string base64PrivateKey, string base64PublicKey)
    {
        try
        {
            byte[] privateKeyBytes = Convert.FromBase64String(base64PrivateKey);
            byte[] publicKeyBytes = Convert.FromBase64String(base64PublicKey);

            RSACryptoServiceProvider rsaProvider = new RSACryptoServiceProvider();
            rsaProvider.ImportCspBlob(privateKeyBytes);
            string privateKeyXml = rsaProvider.ToXmlString(true);
            rsaProvider.ImportCspBlob(publicKeyBytes);
            string publicKeyXml = rsaProvider.ToXmlString(false);

            XmlDocument xmlDoc = new XmlDocument();
            XmlElement rootElement = xmlDoc.CreateElement("RSAKeyValue");
            xmlDoc.AppendChild(rootElement);
            XmlElement privateKeyElement = xmlDoc.CreateElement("PrivateKey");
            privateKeyElement.InnerText = privateKeyXml;
            rootElement.AppendChild(privateKeyElement);
            XmlElement publicKeyElement = xmlDoc.CreateElement("PublicKey");
            publicKeyElement.InnerText = publicKeyXml;
            rootElement.AppendChild(publicKeyElement);
            StringBuilder stringBuilder = new StringBuilder();
            using (XmlWriter writer = XmlWriter.Create(stringBuilder))
            {
                xmlDoc.WriteTo(writer);
            }
            string xmlString = stringBuilder.ToString();

            return xmlString;
        }
        catch (Exception ex)
        {
            // Handle any exceptions that may occur during the conversion
            Console.WriteLine("An error occurred: " + ex.Message);
            return null;
        }
    }
}