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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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ecording of References or Information: Every literature searcher develops his own style of taking notes of references, While every effort should be made to optimise the time a
Problems in Selection: Periodicals are more important than books for researchers and specialists. They contain more recent information in the form of research papers, news, re
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