Simple Data Encryption And Decryption in C# using ASCIIEncoding

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    string mm = "h3dhu12";

    string pp = EnryptString(mm);

    string qq = DecryptString(pp);

    public string DecryptString(string encrStr)

    {

        byte[] b;

        string decrypted;

        try

        {

            b = Convert.FromBase64String(encrStr);

            decrypted = System.Text.ASCIIEncoding.ASCII.GetString(b);

        }

        catch (FormatException fe)

        {

            decrypted = "";

        }

        return decrypted;

    }

    public string EnryptString(string strEnc)

    {

        byte[] b = System.Text.ASCIIEncoding.ASCII.GetBytes(strEnc);

        string encrypted = Convert.ToBase64String(b);

        return encrypted;

    }