Question: Questions a) Explain the problems associated with using hidden form fields for keeping session state. b) One proposed solution was that we could use a

Questions

a) Explain the problems associated with using hidden form fields for keeping session state.

b) One proposed solution was that we could use a session ID embedded in a hidden form field. What are the issues with that solution?

c) Another proposed solution is to use a HMAC to authenticate the data kept in hidden form fields. Explain how HMACs work and how and why they are considered secure.

d) The final proposed solution is to use cookies to keep a session ID (and state on the server). How does this solution compare against the previous session state solutions? Are there any disadvantages? Advantages?

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