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COMPILER/HARDWARE ASSISTED APPLICATION CODE AND DATA SECURITY IN EMBEDDED SYSTEMS

更新时间:2014-11-18:  来源:毕业论文

Abstract
Embedded systems have stepped deeper into
Integrated Avionics systems, and security is
becoming an important concern. Most embedded
systems present a number of software vulnerabilities,
such as buffer overflows. Furthermore, the rapid
growth and pervasive use of embedded systems
makes it easier for a sophisticated attacker to gain
physical access to launch physical attacks on insecure
off-chip main memory. This paper presents a novel
compiler/ hardware assisted application code and
data protection architecture (CHCDP) to monitor the
execution of application. The compiler extracts the
control flow and static  data integrity validation
information using hashing and cyclical redundancy
check (CRC) integrity algorithms at compile time.
The dynamic data integrity validation is generated in
the process of application execution. Likewise, the
function return address and frame point are also
protected at runtime. The designed hardware
observes its dynamic execution trace and checks
whether the trace conforms to the permissible
behavior. And it will trigger appropriate response
mechanisms if finding a mismatch. An OR1200
processor is assigned to build a System on a
Programmable Chip (SOPC) that implements the
architectural design. The experimental analysis
shows that the proposed techniques can eliminate a
wide range of common software and physical attacks
with low performance penalties and minimal
overheads. 本文来自辣.文,论-文·网
Introduction
Along with the technical innovations in the past
decades, embedded systems have stepped deeper into
our lives and are often used in communication
networks and automatic control etc. 2711

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