Question 1 2 pts Which one of the following is true about "Symmetric Key Encryption" One key is used for encryption and the other key is used for decryption One private key is used for both encryption and decryption One key is used for both encryption and decryption, and that key is public to everyone None of the above Question 2 2 pts DES is a Symmetric key encryption algorithm Asymmetric (public) key encryption algorithm