[GFKjunior]

Those are pretty standard in cryptography, the equivalent would be "foo" and "bar".

[ecesena]

A quote from Tanenbaum is mandatory ;)

Cryptographers love tradition. If we were to use "Andy" and "Barbara" as the principals, no one would believe anything in this chapter.

[doktrin]

Ah, that makes sense. I retract my statement.