HW #$1$: Chapters $1,2,$ and $3$ April $28,20241|$ P a g e Birzeit University Faculty of Engineering and Technology Department of Electrical and Computer Engineering First Semester $2023/2024$ ENCS$4320-$ Applied Cryptography Homework # $1-$ Due Monday, May $13,2024$ Instructions: You must show your steps in the area below every question, if any. Not showing your work for any question $($if work is required$)$ results in a score of ZERO. Question $1(6$ points$)$ : Using your cryptanalysis skills, find the plaintext $($and the key$)$ that corresponds to the ciphertext WLIMWXLIWSYPSJQCWSYP, given that the shift cipher $($ROT$-$k$)$ was used. Question $2(11$ points$)$ : Assume an attacker knows that a user$$s password is either $$wxyz$$ or $$bddf$.$ Say the user encrypts his password using: a