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1. A network consists of n hosts. Assuming that cryptographic keys are distributed on a per-hostpair basis, compute how many different keys are required.
2. One cryptographic checksum is computed by applying the DES in CBC mode to the message or file and using the last n bits of the final enciphered block as the checksum. (This is a keyed hash; the parties must agree on the key and the initalization vector used.) Analyze this hash function. In particular, how difficult is it to find two different messages that hash to the same value? How difficult is it to generate a second message that produces the same hash value as the first message?
Timberline Technology manufactures membrane circuits
1. (1) There are many different concepts associated with OOP (Object-oriented programming) like:· Class· Object· Inheritance· Polymorphism
Discuss how the distributed director architecture of AAFID could be combined with the hierarchical structure of the directors of GrIDS.
Would this approach be a better use of computer time? Defend your answer.
The social experimentation model of engineering highlights the need to monitor engineering projects after they are put in place. Discuss this idea in connection with Hurricane Katrina.
What are the one or two most challenging issues in identifying and documenting IT acquisition requirements (i.e., the requirements for solving the problem that was defined)? Explain your reason(s) and how the issue(s) can be successfully addressed..
Create a css file named style.css to format index.htm and provide a basic layout. Use css comments to document the css program.
Create a program called Sum of Numbers
Data link layer transmits the damaged frames in most networks. If the probability of a frame being damaged is p, what is the mean number of transmissions required to send a frame if acknowledgements are never lost?
Your manager has asked you to investigate a Customer Relationship Management (CRM) solution offered as COTS software for in-house installation and as a Software as a Service Cloud solution. Assume the SaaS solution uses a multi-tenant architecture.
what's the advantages and disadvantage of the condensed design circuit (2-bit multiiplier) ?? which one is better a condensed one or just the normal one ?? please good explanation
Create a spreadsheet to display information relating to the usage by country, age group, or any other trend you locate. Calculate totals or averages based on your data.
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