using System;

using System.Security.Cryptography;

using System.Text;

public class Program

{

    public static void Main()

    {

        string keys = @"

{

  ""Exponent"": ""AQAB"",

  ""Modulus"": ""2Df8y11FWv8OdAd5iypsUqcpWpBJC6i6szfZfmdVhNbwRR9HpRQpf+t0VsARgV9r6tueoxlCu+ccZTjUuP7TX7Y/OeYcLFnsqEo9aNMMMgQY/X4aKf9qt5C+nmfx+VVE6ElAg5vEOm6WUf8Akhi9Wh1P/sq9k1gmfpvLuh/pCBWB0ccdf5yNuVHjm2Dw4K2ZVDnWRhbvNQOkJLLm6P97/4yN3bDaHvqz0z9wzz9jjJ0ggdkJLRqn4K8aFBitTeJuRDZIP5ky/HLhaiVfHxTBXgIvHHufIHaV+XiBXjmFh48KZVIEyfY6CMbnwcJoMjigC7GlRVj0iC72gc1e/xJzsQ==""

}

";

        string unencryptedPassword = "admin";

        try

        {

            EncryptionValues values = Newtonsoft.Json.JsonConvert.DeserializeObject<EncryptionValues>(keys);

            RSACryptoServiceProvider rSACryptoServiceProvider = new RSACryptoServiceProvider();

            rSACryptoServiceProvider.ImportParameters(new RSAParameters

            {

                Exponent = Convert.FromBase64String(values.Exponent),

                Modulus = Convert.FromBase64String(values.Modulus)

            });

            string aout = Convert.ToBase64String(rSACryptoServiceProvider.Encrypt(Encoding.UTF8.GetBytes(unencryptedPassword), fOAEP: false));

            Console.WriteLine(aout);

        }

        catch (Exception)

        {

            throw;

        }

    }

}

​

public class EncryptionValues

{

    public string Exponent {get;set;}

    public string Modulus {get;set;}

}