Public Key Infrastructure Tutorial
Tutorial
tasks
Read
these questions before the tutorial and write some thoughts down.
We'll
work through these questions during the tutorial as a group and put the best
answers together.
These
tasks require a little imagination and research. You will find almost all
the answers on the module website. You may also use the WWW as a source for
your material.
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Tutorial
Task 1
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What
are cornerstones of online security? State
and explain them.
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Answer:
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Tutorial
Task 2
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What is
Encryption? What are the different
types?
What is
the difference? What are the
algorithms that are used by standard? What
are the length of keys we use by standard? What does the strength of
encryption depend on?
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Answer:
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Tutorial
Task 3
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What is
digital certificate? How is it used by
the merchant?
How
does the merchant obtain DC?
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Answer:
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Tutorial
Task 4
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What is
a certificate authority (CA)? How are
they organised?
What
are services that CAs provide the merchants?
Do you have examples of companies that act as CAs? What sort of organisations are good candidates
for acting as certificate authority?
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Answer:
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Tutorial
Task 5
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What is
SSL? How does it work? How does it ensure the cornerstones of
security?
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Answer:
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Tutorial
Task 6
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Go to http://my.shu.ac.uk and click on "Login" - Do not login. Has the http changed to another
protocol?
You see
a padlock next to the address bar.
Click on the padlock to open the server's digital certificate and
examine the details. Who is the
Certificate Authority? Is there a
hierarchy? How do you think the
hierarchy works? Is SHU a Certificate
authority? Why do you think SHU has to
be a certificate authority in its own right?
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Answer:
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