3
votes
1answer
80 views

Validating correctness amongst untrusted answers

I'm toying around a distributed computing project. The client application asks for a problem to solve. The server returns a problem description from a "problems pool". When the client finishes, it ...
5
votes
2answers
156 views

How can a certificate be valid in the Hybrid Model but not in the Chain Model?

All dates in European format! I am learning about validity models, but the solution for this assignment confuses me. Translation: The relevant data for the applicable certificates are shown ...