کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10328974 685244 2005 24 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Scenarios and Covert Channels: Another Game...
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر نظریه محاسباتی و ریاضیات
پیش نمایش صفحه اول مقاله
Scenarios and Covert Channels: Another Game...
چکیده انگلیسی
Covert channels are information leaks in systems that use resources to transfer secretly a message. They are a threat for security, performance, but also for a system's profitability. This paper proposes a new approach to detect covert channels from scenario models of protocols. The problem of finding covert channels in scenarios is first modeled as a game, in which a pair of malicious users {S,R} is trying to transfer information while the rest of the protocol tries to prevent it. The messages transferred are encoded by behavioral choices at some precise moments, and decoded by a transducer whose input vocabulary is an observation of the system. We then characterize the presence of a covert channel as the existence of a winning strategy for {S,R} and of a decoder.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electronic Notes in Theoretical Computer Science - Volume 119, Issue 1, 2 February 2005, Pages 93-116
نویسندگان
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