What: Cypherpunks SF Bay Area Physical Meeting When: 13:00 February 11 1995 Where: Silicon Graphics, Inc., Building 5 (SGI's Iris Cafeteria) 2025 North Shoreline Boulevard, Mountain View, CA, Earth, Sol, MW Topic: Crypto Networking Protocol Hygiene Agenda: (listed times are almost all a joke) 12:00 Brown Bag Lunches, AV Debugging, Loose Talk 13:00 Meeting Begins (MBONE broadcast begins) 13:02 Meeting Announcements, Agenda Rewrite 13:08 Hugh Daniel on "When What Goes Where: Good Networking Protocol Hygiene" 13:45 Eric Hughes on "Sendmail as a Multiplexor" 14:30 Michael Sattler on "Announcement of CryptDisk v1.0" 14:40 General Announcements, Questions, Confusion etc. 15:00 BREAK! 15:30 Doug Barnes "Stream-oriented, analysis-resistant public-key protocols over UDP" 16:15 Raph Levien & KT Kislitzin on "Design philosophy for the upcomming PGP 3.0 API" 17:00 Hot New Topics of the Week & General Free For All! 17:59 Mbone Broadcast ends 18:00 KP room, Thank our SGI hosts & GOTO Dinner Presentations: "When What Goes Where: Good Networking Protocol Hygiene" Hugh Daniel <hugh@toad.com> When designing, coding and testing programs we are confronted with a myriad of choices as to how various parts of the solution communicate. Much is known about how to design 'protocols' that are flexible, debugable & robust. We are currently encoding cryptographic protocols in our systems and networks at a furious rate, yet there are new challenges in keeping such systems robust, secure and sometimes even anonymous. I hope to touch on some of the well known tricks and dangers, what is new when cryptographic and anonymous systems are combined with todays systems and where we might learn from the past. "Sendmail as a Multiplexor." Eric Hughes <eric@remailer.net> The basic architecture of sendmail is a recognizer and a dispatcher. These two elements provide a good framework for designing systems that can be changed piece by piece. Even when a facility seems to have stabilized, it's often a good idea to keep the flexible framework around for future experimentation and expansion. "Announcement of CryptDisk v1.0" Michael Sattler <msattler@jungle.com> CryptDisk (for the Macintosh) is an example of the kinds of [mostly] transparent strong crypto that we need. Integrated smoothly with the operating system, CryptDisk provides IDEA encryption on a block read/write level for a virtual hard disk. It's beauty lies mainly in that it does exactly what the user expects and requires no more setup than remembering a pass-phrase. Source code is available upon request. Warning: Some governments might consider this software a "Munition", not suitable for "private possession" by free peoples. "Stream-oriented, analysis-resistant public-key protocols over UDP" Doug Barnes <dab@Tadpole.COM> Many cypherpunks projects have a need to reliably transmit variable-length (sometimes quite long) data over unreliable networks. TCP lends itself to traffic analysis and is not well-suited for use in a hypothetical system of packet laundries that would lead to packets within a particular stream appearing to come from a variety of sources. We have designed and are currently implementing a UDP-based, hidden-streams protocol that utilizes fixed-length blocks and pseudo-random sequence numbering to provide reliable, stream-oriented services to higher-level applications despite extremely creative routing and laundering of packets. Raph Levien <raph@netcom.com> & KT Kislitzin <ktk@sgi.com> "Design philosophy for the upcomming PGP 3.0 API" PGP is getting a major upgrade soon, some of the team doing the work will talk about the motivations and directions the work is going in. --------------------------------------------------------------------------------