Exercises

Exercises produce points, the maximum is 10 points. The special exercises (number 6 in the first exercise) produce more points than the other exercises.

• Exercise 1.  Some solutions.
• Exercise 2.
• Exercise 3.  Some solutions.
• Exercise 4. Exercise 4.6   Some solutions.  
• Correction: In the exercise 4.1., when C is responding to A using B's nonce, the message is of course signed by C's secret key, not by B's.
• Exercise 5.  Some solutions.