Which two statement about the DES algorithm are true?(Choose two)
A. It uses a 64-bit key block size and its effective key length is 65 bits
B. It uses a 64-bits key block size and its effective key length is 56 bits
C. It is a stream cripher that can be used with any size input
D. It is more efficient in software implements than hardware implementations.
E. It is vulnerable to differential and linear cryptanalysis
F. It is resistant to square attacks
