| Project/Area Number |
24700039
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Software
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| Research Institution | National Institute of Technology, Kumamoto College |
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Principal Investigator |
KANZAKI Yuichiro 熊本高等専門学校, 人間情報システム工学科, 准教授 (90435488)
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| Project Period (FY) |
2012-04-01 – 2014-03-31
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2013: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2012: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
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| Keywords | ソフトウェア保護 / セキュリティ / プログラムの難読化 / 耐タンパソフトウェア / 確率的言語モデル / ソフトウェアセキュリティ / 著作権・コンテンツ保護 / 難読化 |
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| Research Abstract |
This research proposes a method for evaluating the stealthiness of software protection code. Artificial code fragments, which means unusual code fragments caused by obfuscation, are easy to distinguish from unprotected code fragments. Based on the fact, the degree of stealthiness is estimated according to the artificiality of the protected code, by means of probabilistic language model (N-gram model). The results of the case study show that the obfuscation techniques that corrupt the original semantics of the program or that just insert junk code fragments to the program, tend to decrease the stealthiness of the code.
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