Dr. Patrick Albert Chikumba

Dr. Patrick Albert Chikumba

Co-author

Computing & Information Technology

23 publications

Dr. Patrick Albert Chikumba is a senior lecturer and researcher in Information Systems implementation.

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Security Analysis of Some Output of RC4 Cryptosystem

Conference Proceeding
Published 10 months ago, 246 views
Author
Kondwani Thangalimodzi
Co-authors
Gift Khangamwa, Dr. Patrick Albert Chikumba
Abstract
RC4 is one of the most widely used cryptosystem by many applications. It is used for secure communications; file encryption, Secure Sockets Layer, Wired Equivalent Protocol, potentially useful in many popular systems, it is a random bit generator. In this paper, we analyze the linear relationship in the output of RC4 over a large number of keys. In our method we test linear functions of the keystream. For each such linear function, we run the RC4 algorithm on a large randomly chosen set of keys and evaluate the corresponding output. Using statistical test we find that on some output of the RC4, the combination of output bits is not truly random.
Year of Publication
2014
Proceedings Title
e-Infrastructure and e-Services for Developing Countries: 5th International Conference, AFRICOMM 2013
Page Numbers
90-94
Conference Dates
November 25-27, 2013
Conference Place
Blantyre, Malawi
Top Researchers
“Academic success depends on research and publications.”
---- Philip Zimbardo ----