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Automated Recovery in a Secure Bootstrap Process William A. Arbaugh
 

Summary: Automated Recovery in a Secure Bootstrap Process
William A. Arbaugh
Angelos D. Keromytis
David J. Farber
Jonathan M. Smith
University of Pennsylvania
Distributed Systems Laboratory
Philadelphia, PA. 19104-6389
fwaa, angelos, farber, jmsg@dsl.cis.upenn.edu
Abstract
Integrity is rarely a valid presupposition in many sys-
tems architectures, yet it is necessary to make any security
guarantees. To address this problem, we have designed a
secure bootstrap process, AEGIS, which presumes a mini-
mal amount of integrity, and which we have prototyped on
the Intel x86 architecture. The basic principle is sequenc-
ing the bootstrap process as a chain of progressively higher
levels of abstraction, and requiring each layer to check a
digital signature of the next layer before control is passed
to it. A major design decision is the consequence of a failed

  

Source: Arbaugh, William A. - Institute for Advanced Computer Studies & Department of Computer Science, University of Maryland at College Park

 

Collections: Computer Technologies and Information Sciences