Imagine a peer-to peer network where 1000 users want to communicate in an authenticated and confidential way without a central Trusted Third (TIP).
1. How many key are collectively needed , if symmetric algorithms are deployed?
2. How are these number changed , if we bring in a central instance (key Distribution center , KDC)?
3. What is the main advantage of a KDC against the scenario without a KDC ?
4. How many keys are necessary if we make use of asymmetric algorithm ?