using System;
using System.Text;
using System.Security.Cryptography;
 
public class Test
{
	public static void Main()
	{
		var pkey = "<RSAKeyValue><Modulus>lPtWy3z5nGO6qxf3U2wLbiZb+EfxVXNVhB/RylNI0I1/5/3W/b8/8dIt7Xv2yizRHMFIQbvj1j5zrf6lVERvQVE+kbAkRVJ9AsholCqMuOaPSv5iQB5m6zba1AenJK2Cxe+WOdJ1DbAVR1A8PMkMppojgU9YHPyjObNcU8+OCzM=</Modulus><Exponent>AQAB</Exponent></RSAKeyValue>";
 
		var cipher = new RSACryptoServiceProvider();
		cipher.FromXmlString(pkey);
		byte[] data = Encoding.UTF8.GetBytes("some message");
		byte[] cipherText = cipher.Encrypt(data, false);
		var encrypted = Convert.ToBase64String(cipherText);
		Console.WriteLine(encrypted);
	}
}

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