A __________ is to try every possible key on a piece of ...

[darbym82]

A __________ is to try every possible key on a piece of ciphertext until an intelligible translation into plaintext is obtained.
 
  A. mode of operation B. hash function
   C. cryptanalysis D. brute-force attack

Question 2

2. There are two general approaches to attacking a symmetric encryption scheme: cryptanalytic attacks and __________ attacks.
 
  What will be an ideal response?

[Sarahjh]

Answer to Question 1

D

Answer to Question 2

brute-force

[darbym82]

Wow, this really help

[mcarey591]

Thanks for the timely response, appreciate it