© 1989 by British Computer Society
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Multi-destination secure electronic mail
Hewlett-Packard Laboratories, Filton Road, Stoke Gifford, Bristol BS12 6QZ, UK
Electronic mail messages are often sent to more than one destination; this gives rise to problems when security is required. A recent draft for a standard for securing electronic mail messages suggests a novel mechanism for solving the problem. Unfortunately, as shown herein, the solution is flawed and can allow the construction of fake messages which will pass the authenticity tests.
Received May 1987. revised July 1987.
* Hewlett-Pockord Laboratories, Filton Road, Stoke Gifford, Bristol BS12 6QZ