NDLI: What's the PointiSA?

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What's the PointiSA?

Content Provider	ACM Digital Library
Author	Ghosh, Sudeep Hiser, Jason D. Davidson, Jack W.
Abstract	Software watermarking, fingerprinting, digital content identification, and many other desirable security properties can be improved with software protection techniques such as tamper resistance and obfuscation. Previous research has demonstrated software protection can be significantly enhanced using a Process-level Virtual Machine (PVM). They can provide robust program protections, particularly at run time, which many other software protection techniques lack. PVMs have been used to provide tamper detection, dynamic code obfuscation, and resistance to static disassembly. Over-all, the presence of PVMs makes it more difficult for the adversary to achieve their goals. Recently, a new attack methodology, called Replacement Attacks, was described that successfully targeted PVM-protected applications. This methodology circumvents execution of the protective PVM instance through the use of another virtual machine to execute the program. The replacement occurs dynamically and allows execution of the application without any PVM-based protections. In this work, we formalize the notion of a replacement attack using a novel model. We then present a defense against such attacks. To the best of our knowledge, this technique is the first defense against replacement attacks. The technique relies on software interpretation of instructions, which forms the basis of PVMs. By carefully modifying the semantics of some individual instructions, it is possible to make the application unusable without the presence of the protective PVM instance. The technique is called PointISA, named after a point function\|a function which returns true for only one given input. We provide a formal description of PointISAs and an evaluation of the strength of the approach.
Starting Page	23
Ending Page	34
Page Count	12
File Format	PDF
ISBN	9781450326476
DOI	10.1145/2600918.2600928
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	2014-06-11
Publisher Place	New York
Access Restriction	Subscribed
Subject Keyword	Tamper detection Process-level virtual machines Replace- ment attack
Content Type	Text
Resource Type	Article

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3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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