nHow can we convince Alice to
trust Bob’s CA?
nAlice
and Bob’s CA could have met previously & exchanged keys directly.
nBob’s
CA isn’t going to shake hands with everyone he’s certified, let alone
everyone whom Bob wants to talk to.
nSomeone
Alice trusts could vouch to her for Bob’s CA and Bob’s CA’s key
nInfinite
Loop: See Loop, Infinite.
nActually,
it’s just a bounded recursion...