Has DES been broken down
Has DES been broken down?
Expert
No easy attack on DES has been explored, despite the efforts of various researchers over various years. The obvious technique of attack is brute-force comprehensive search of key space; this acquires 255 steps on the average. Early on it was suggested that the rich and powerful enemy could build the special-purpose computer skilled of breaking DES by comprehensive search in a reasonable amount of time. Afterward, Hellman [Hel80] showed the time-memory trade-off which permits enhancement over comprehensive search if memory space is plentiful, after a comprehensive precomputation. These ideas fostered doubts regarding the security of DES.
There were as well accusations which the NSA had intentionally weakened DES. Despite such suspicions, no feasible manner to break DES faster than comprehensive search was discovered. The cost of the specialized computer to perform comprehensive search (requiring 3.5 hours on average) has been predictable by Wiener at 1 million dollars.
I. (30pts) Answer each True or False T F 1. Translation risk can be hedged against by using the forward market for currency exchange. T F 2. Environmental scanning involves looking for changes in environmental forces in the global marketplace. T F 3. The Total Product and the Physic
Write down a brief introduction of the term ‘Grapevine communication’ and also write down its effect on mass communication?
the advantage and disadvantage of the hicksian model of collective bargaining
Describe in detail the inbound and outbound travel regulations and its impact on tourism?
discuss everyday forms of peasant resistance in mughal india
Define ethics and explain why interpersonal communication involves these ethical choices.
What we normally check for in Database Testing?
Write down the differentiation between diagrams of CT and IT in heat treatment of the steels.
Name the metals which don’t react with lithium Bromide.
Are the boundaries of grain are a continuation of regular structure of lattice from one grain to the other?
18,76,764
1951414 Asked
3,689
Active Tutors
1455384
Questions Answered
Start Excelling in your courses, Ask an Expert and get answers for your homework and assignments!!