February 12, 2002
Practical Aspects of Modern Cryptography
89
More on PGP Certs
nPGP was designed for secure e-mail
nEspecially secure e-mail among a close circle of friends.
nOriginally, keys were always exchanged directly with correspondents
nBut users really wanted to be able to look up someone’s public key in a directory & send them mail (perhaps unsolicited)
nNeed a directory, but no common CA or set of CAs to run it