Protecting Software Code by Guards

Abstract. Protection of software code against illegitimate modifications by its users is a pressing issue to many software developers. Many software-based mechanisms for protecting program code are too weak (e.g., they have single points of failure) or too expensive to apply (e.g., they incur heavy runtime performance penalty to the protected programs). In this paper, we present and explore a methodology that we believe can protect program integrity in a more tamper-resilient and flexible manner. Our approach is based on a distributed scheme, in which protection and tamper-resistance of program code is achieved, not by a single security module, but by a network of (smaller) security units that work together in the program. These security units, or guards, can be programmed to do certain tasks (checksumming the program code is one example) and a network of them can reinforce the protection of each other by creating mutual-protection. We have implemented a system for automating the pro...

• Type: Conference
• Year: 2001
• Where: CCS
• Authors: Hoi Chang, Mikhail J. Atallah
• Keywords: CCS 2001, Program Code, Runtime Performance, Security Privacy, Security Units