Checks that symmetric keys with a length less than 128 bytes do not use the RC2 or RC4 encryption algorithm. The best practice ...

Checks that symmetric keys with a length less than 128 bytes do not use the RC2 or RC4 encryption algorithm. The best practice recommendation is to use AES 128 bit and above to create symmetric keys for data encryption. If AES is not supported by the version of your operating system, use 3DES.