DEFCON.15 T203 - The Zfone Project (Cryptophone)

DEFCON.15 T203 - The Zfone Project (Cryptophone) p r o u d l y b r o u g h t t o y o u b y : _| _|_| _|_| _|_| _|_|_| _|_|_| _|_|_| _|_|_| _| _| _| _| _| _| _| _| _| _| _| _| _| _| _|_| _|_| _|_| _| _| _| _| _| _| _| _| _| _| _| _| _| _| _| _| _|_|_| _|_|_| _|_|_| _|_| _|_| _|_| DefCon 15 2007 at the Riviera Hotel and Casino, Las Vegas Defcon 15 - T203 Z-Phone presented by Phillip Zimmermann Duration: 49m:46s A Pretty Good Way to Foil the NSA How easy is it for the average internet user to make a phone call secure enough to frustrate the NSA's extrajudicial surveillance program? Wired News took Phil Zimmermann's newest encryption software, Zfone, for a test drive and found it's actually quite easy, even if the program is still in beta. Zimmermann, the man who released the PGP e-mail encryption program to the world in 1991 -- only to face an abortive criminal prosecution from the government -- has been trying for 10 years to give the world easy-to-use software to cloak internet phone calls. But make no mistake: to eavesdroppers, Zfone is anything but routine. The protocol is based on SRTP, a system that uses the 256-bit AES cipher and adds to that a 3,000-bit key exchange that produces the codes callers can read off to one another. It has been submitted to IETF for approval as an internet standard, and by most accounts is strong enough to defy even the most sophisticated code-breaking technologies, from a hacker's packet sniffer to the acres of computers beneath Ft. Meade. That makes Zfone the "most secure telephone system anyone has ever used," according to PGP Corporation's CTO Jon Callas, who worked with Zimmermann on the protocol. Q: What is Zfone? A: Zfoneâ

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