A security engineer wants to introduce key stretching techniques to the account database to

make password guessing attacks more difficult. Which of the following should be considered to achieve this? $($Choose two$)$

A$.$ Digital signature

B$.$ bcrypt

C$.$ Perfect forward secrecy

D$.$ SHA$-256$

E$.$ P$-384$

F$.$ PBKDF$2$

G$.$ Record$-$level encryption