Efficient purely-dynamic information flow analysis
Efficient purely-dynamic information flow analysis
复制标题
高效的纯动态信息流分析
DOI:
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发表时间:
2009
期刊:
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通讯作者:
C. Flanagan
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作者:
Thomas H. Austin;C. Flanagan
We present a novel approach for efficiently tracking information flow in a dynamically-typed language such as JavaScript. Our approach is purely dynamic, and it detects problems with implicit paths via a dynamic check that avoids the need for an approximate static analyses while still guaranteeing non-interference. We incorporate this check into an efficient evaluation strategy based on sparse information labeling that leaves information flow labels implicit whenever possible, and introduces explicit labels only for values that migrate between security domains. We present experimental results showing that, on a range of small benchmark programs, sparse labeling provides a substantial (30%-50%) speed-up over universal labeling.