] "Tape C189 shot in a clean office, believed by coalition
] intelligence sources, who looked at this tape, to have
] been al Qaeda's secure Afghan communications room. The
] man using the two-way radio tells the person at the other
] end to look for a message on his computer and decode it."

This snippet from an August 2002 CNN report is one of the *very* few references I've ever found about Al Qaeda using any type of computerized cryptography. I would dearly love to find out what type of encryption was being referred to in this tape. PGP? ROT-13 (or an Arabic equivalent?). Anyone got a source they can tap to get more details?

Al Qaeda Encryption Reference