Question 6 sam  Is DES[k,DES(k,m)] or k.XOR.DES(k,m) more secure than DES(k,m)? k.XOR.DES(k,m) is more secure but DES[k,DES(k,m)] is not. Both are more secure. DES[k,DES(k,m)] is more secure but k.XOR.DES(k,m) is not. None of the Above ..

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
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Question 6 sam 

Is DES[k,DES(k,m)] or k.XOR.DES(k,m) more secure than DES(k,m)? k.XOR.DES(k,m) is more secure but DES[k,DES(k,m)] is not. Both are more secure. DES[k,DES(k,m)] is more secure but k.XOR.DES(k,m) is not. None of the Above .. 

Sorry, you are Incorrect.
Answer(s): (Your response(s) are shown.)
Is DES[k,DES(k,m)] or k.XOR.DES(k,m) more secure than DES(k,m)?
K.XOR.DES(k,m) is more secure but DES[K, DES(k,m)] is not.
Both are more secure.
DES[k,DES(k,m)] is more secure but K.XOR.DES(k,m) is not.
None of the Above
Transcribed Image Text:Sorry, you are Incorrect. Answer(s): (Your response(s) are shown.) Is DES[k,DES(k,m)] or k.XOR.DES(k,m) more secure than DES(k,m)? K.XOR.DES(k,m) is more secure but DES[K, DES(k,m)] is not. Both are more secure. DES[k,DES(k,m)] is more secure but K.XOR.DES(k,m) is not. None of the Above
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