To Try All Possible Passwords of Length K or Less

Q11: The term _ comes about because perpetrators

Q12: Depending on who a given user is,

Q13: In the early days of computing, when

Q14: A _ captures the user's passwords and

Q15: The main difficulty with a symmetric algorithm

Q17: _ is a practice used to illegally

Q18: In a _ cipher, a single letter

Q19: _ means keeping information secure-that is, protected

Q20: How do operating systems solve the problem

Q21: _ is the science of "secret writing."