Detect weak key size for RSA

[mcwww]

        UnicodeEncoding ByteConverter = new UnicodeEncoding();
        //Create byte arrays to hold original, encrypted, and decrypted data. 
        byte[] dataToEncrypt = ByteConverter.GetBytes("Data to Encrypt");
        byte[] encryptedData;
        byte[] decryptedData;

        //Create a new instance of RSACryptoServiceProvider to generate 
        //public and private key data.  Pass an integer specifying a key- 
        //length of 2048.
        RSACryptoServiceProvider RSAalg = new RSACryptoServiceProvider(1000);