26C3 - 26C3 1.15

26th Chaos Communication Congress
Here be dragons

Benjamin Kellermann
Day Day 3 - 2009-12-29
Room Saal2
Start time 21:45
Duration 01:00
ID 3577
Event type Lecture
Track Science
Language used for presentation English

Privacy-Enhanced Event Scheduling

Event schedulers, well-known from groupware and social software, typically share the problem that they disclose detailed availability patterns of their users. This talk distinguishes event scheduling from electronic voting and proposes a privacy-enhanced event scheduling scheme.

Based on superposed sending and Diffie-Hellman key agreement, it is designed to be efficient enough for practical implementations while requiring minimal trust in a central entity. Protocols to enable dynamic joining and leaving of participants are given as well as a Web 2.0 implementation is presented.

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