kerbeos的故事 中英文对照 Athena和Euripides.doc

Designing an Authentication System: a Dialogue in Four Scenes Originally written by Bill Bryant, February 1988. Cleaned up and converted to HTML by Theodore Tso, February, 1997. An afterword describing the changes in Version 5 of the Kerberos protocol was also added. Abstract This dialogue provides a fictitious account of the design of an open-network authentication system called Charon. As the dialogue progresses, the characters Athena and Euripides discover the problems of security inherent in an open network environment. Each problem must be addressed in the design of Charon, and the design evolves accordingly. Athena and Euripides dont complete their work until the dialogues close. When they finish designing the system, Athena changes the systems name to Kerberos, the name, coincidentally enough, of the authentication system that was designed and implemented at MITs Project Athena. The dialogues Kerberos system bears a striking resemblence to the system described in Kerberos: An Authentication Service for Open Network Systems presented at the Winter USENIX 1988, at Dallas, Texas. Scene I A cubicle area. Athena and Euripides are working at neighboring terminals. 一个小工作间。Athena和Euripides正在相邻的终端上工作。 Athena: Hey Rip, this timesharing system is a drag. I cant get any work done because everyone else is logged in. 嗨，坏蛋，这个分时操作系统实在太慢了。我根本无法工作，因为其他人都登上去了。 Euripides: Dont complain to me. I only work here. 别对我报怨。我只是在这儿工作。 Athena: You know what we need? We need to give everyone their own workstation so they dont have to worry about sharing computer cycles. And well use a network to connect all the workstations so folks can communicate with one another. 你知道我们需要什么吗?我们需要给每个人一台工作站，这样大家就不用担心计算机的速度了。并且，我们需要一个网络把所有的计算机都连起来，这样他们就可以互相交流了。 Euripides: Fine. So what do we need, about a thousand workstations? 好。那我们差不多要一千台工作站吧? Athena: More or less. 差不多吧。 Euripides: Have you seen the size of a typical workstations disk drive? There isnt enough room for all the software that you have