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We now analyze the security of DES double encryption (2DES) by doing a cost-estimate:
1. First, let us assume a pure key search without any memory usage. For this purpose, the whole key space spanned by K1 and K2 has to be searched. How much does a key-search machine for breaking 2DES (worst case) in 1 week cost? In this case, assume ASICs which can perform 107 keys per second at a cost of $5 per IC. Furthermore, assume an overhead of 50% for building the key search machine
2. Let us now consider the meet-in-the-middle (or time-memory tradeoff) attack, in which we can use memory. Answer the following questions: How many entries have to be stored? How many bytes (not bits!) have to be stored for each entry? How costly is a key search in one week? Please note that the key space has to be searched before filling up the memory completely. Then we can begin to search the key space of the second key. Assume the same hardware for both key spaces.
System analysis and design final project.
If you were the CFO of the facility, what type of corporate compliance processes would you have in place? Which federal statutes would you include in your compliance process?
The page table shown in Figure 9.32 is for a system with 16-bit virtual and physical addresses and with 4,096-byte pages. The reference bit is set to 1 when the page has been referenced. Periodically, a thread zeroes out all values of the reference b..
Write a 500-1000 word paper using Word discussing two of the additional DBA responsibilities. Use at least two sources outside your text for this paper. Do not use Wikipedia. Use APA format for the paper, and be sure to cite all your sources using AP..
Choose a field (e.g., marketing, sales, teaching, etc.) where you believe presentations are important. Describe three ways in which you could effectively engage the audience in your chosen field through the use of PowerPoint 2013 presentations.
To change selected text to all capital letters, click the change case button and then click?
The Customer receives a Travel Guidebook from Amazon, then reads the book and chooses locations. The Customer also views locations on Google Maps using the Map Program as well as the Earth and Satellite Master files.
What extra constraints are required on the relation advisor to ensure that the one-to-one cardinality constraint is enforced?
LINUX If you make changes to .bash_profile and you want to load those changes into memory without logging out and back in again, what command can you use?
What decisions did the FBI and SAIC make during development that increased risk? How can these be avoided in the next project that the FBI takes on?
Recommendations for network equipment that must be placed at each location; also, consider equipment based on teleconferencing needs
Consider a game tree in which there are six marbles, and players 1 and 2 take turns picking from one to three marbles. The player who takes the last marble loses the game.
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