Verifier 4, 5 and 6

Question

Can someone help/give any hints to solve Verifier - 4, 5 and 6 of Ex 10
Thank you in advance.

Answer 1

Hi,

What did you try to solve the tasks?

We will not provide whole solutions for the tasks.
However, if you have specific questions, I will happily answer them.

Note: The tasks themselves (on the platform https://websec.cs.uni-paderborn.de/json-sec/sigenc/) give you a general direction in how you can solve them.
E.g., verifier 4 can be solved with "Key Confusion". You can look up what this means in the lecture PDF or video.

Cheers
Sebastian