Quantum Cryptographic Protocols
Roughly speaking, the purpose of a cryptographic protocol is to perform
some task involving multiple people without letting anyone involved learn
any privileged information, and, as far as possible, without being
disrupted by people attempting to cheat. The prototypical cryptographic
protocol is sending a secret message from Alice to Bob without a third
party, Eve, learning what the message is. The standard classical methods
for solving this problem rely on Eve having only limited computational
power. For instance, RSA, a commonly used scheme, relies on Eve not being
able to factor large numbers. But what if Eve has some secret device that
enables her to do so?
Trei?
http://qso.lanl.gov/~gottesma/Crypto.html