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(a) Describe DES encryption with a block diagram and brief steps.
(b) How does triple DES improve security. What is the effective key length of triple DES? How can 3DES be compatible with DES?
(c) Describe a one way hash function and give an example. Give essential properties of the hash functions.
(d) Define message authentication. Explain MAC.
(e) Give three known attacks on AES encryption.
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define cryptography
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QUESTION (a) One of the biggest drawbacks that GNS3 has is that it supports only the IOS images of routers. This means that users cannot emulate Cisco switches. Suggest two sol
QUESTION: (a) Briefly explain the steps involved in Network Simplex Method. (b) What data structures you would expect in the Network Simplex Method. Show the data struct
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