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a) Differentiate between encryption and decryption.
b) Explain how cryptography works.
c) List down three examples of symmetric key algorithms and two examples of asymmetric encryption algorithms.
d) Explain using suitable illustrations where necessary how asymmetric public key encryption ensures both confidentiality and authenticity.
e) Explain the role of the following players in a Public Key Infrastructure (PKI)
(i) Certification authority (ii) Certificate holder (iii) Relying party
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Total Marks – 40 (Note: The information for this question is based on the material contained in Hopkins, Andrew (1999) Managing major hazards: the lessons of the Moura Mine Disast
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In the past, in the Universe of Documents, the general trend has been to narrow the extension of a subject embodied in -a document taken as a whole. Therefore, there has been a gen
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