Multiple Choice
1.
A. Linear feedback shift registers (LFSRs) are ________________ used in cryptography.
(a) always
(b) never
(c) rarely
(d) regularly
B. The claim that quantum cryptography is secure _________different from all previous claims.
(a) has yet to be proven to be
(b) is qualitatively
(c) is slightly
(d) is not
C. Both DES and AES use _________________ bit substitution and permutation encryption primitives.
(a) simple
(b) different
(c) identical
(d) similar
Solution 1(A): (d) regularly
LFSRs are pseudorandom number generators used in cryptography. There are many othe rtypes of pseudorandom number generators as well.
Solution 1(B): (d) is not
Quantum Cryptography is very secure and virtually unbreakable. This claim has been made many times.
Solution (C): (d) Similar
Both AES and DES use similar bit substitution and permutation encryption primitives but DES uses a Fiestel network and AES does not .
Multiple Choice 1. A. Linear feedback shift registers (LFSRs) are ________________ used in cryptography. (a) always...