February 5, 2002
Practical Aspects of Modern Cryptography
20
What’s the “some other stuff”
nHow can we convince Alice that some key belongs to Bob?
nAlice and Bob could have met previously & exchanged keys directly.
nJeff Bezos isn’t going to shake hands with everyone he’d like to sell to...
nSomeone Alice trusts could vouch to her for Bob and Bob’s key
nA third party can certify Bob’s key in a way that convinces Alice.