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    Please use this identifier to cite or link to this item: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/98649

    Title: Obfuscation for object-oriented programs: dismantling instance methods
    Authors: Liaw, Heh-Tyan;Wei, Shih-Chieh
    Contributors: 淡江大學資訊管理學系
    Keywords: obfuscation;dismantling instance method;virtual function system;interface function system;dispatching function;callback method
    Date: 2014-09
    Issue Date: 2014-09-03 20:24:09 (UTC+8)
    Publisher: Chichester: John Wiley & Sons Ltd.
    Abstract: Code obfuscation can help software developers protect technological secrets. Code readability is greatly enhanced with object-oriented technology that represents dynamic binding using instance method invocation. Therefore, dismantling instance methods is proposed in this paper as a critical obfuscating technique for object-oriented programs. The interception classes are interpolated first into the project. The static images and the up forwarders are then created. For each virtual function system and each interface function system, a respective dispatching function is set up. By properly arranging the class identifiers and binding identifiers, the switch statement in the dispatching function can be compiled into constant-time low-level code. After using dispatching functions to simulate virtual function system or interface function system invocations, all original instance methods in the project will be removed. Interception functions and export functions are indispensable in supporting the operation of callback methods. A prototype of our obfuscation system was implemented and successfully tested on some practical scale applications.
    Relation: Software: Practice and Experience 44(9), pp.1077–1104
    DOI: 10.1002/spe.2193
    Appears in Collections:[Graduate Institute & Department of Information Management] Journal Article

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