August
1999 QUESTION 3 Total Marks: 20 Marks |
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questions
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| (a) | Identify and explain any three characteristics
of digital signatures.
|
[6] |
| (b) | (i) Explain the different options available
for multiple users to sign same digital document. (ii) Identify the disadvantages associated with these options.
|
[2] [2] |
| (c) | Under what circumstance is the encryption
process considered to be equivalent to the signature verification process? Why is this?
Does it cause any possible attack? Explain.
|
[6] |
| (d) | Discuss the reasons for limited scope of
internal auditing in computer security.
|
[4] |