Static Security Certification of Programs via Dynamic Labelling

Ghosal, Sandip; Shyamasundar, R. K.; Kumar, N. V. Narendra

doi:10.5220/0006868604000411

Cited by 1 publication

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“…Application to Flow Security: Dynamic labelling (DL) algorithms [30] are in use for compile-time flow security certification. For a program performing IO, however, the DL algorithm could also be effectively used for identifying program points for arriving at leaky assertions at plausible control points.…”

Section: Formalization Of Our Approachmentioning

confidence: 99%

An Axiomatic Approach to Detect Information Leaks in Concurrent Programs

Ghosal

Shyamasundar

2021

Preprint

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Realizing flow security in a concurrent environment is extremely challenging, primarily due to non-deterministic nature of execution. The difficulty is further exacerbated from a security angle if sequential threads disclose control locations through publicly observable statements like print, sleep, delay, etc. Such observations lead to internal and external timing attacks. Inspired by previous works that use classical Hoare style proof systems for establishing correctness of distributed (real-time) programs, in this paper, we describe a method for finding information leaks in concurrent programs through the introduction of leaky assertions at observable program points. Specifying leaky assertions akin to classic assertions, we demonstrate how information leaks can be detected in a concurrent context. To our knowledge, this is the first such work that enables integration of different notions of non-interference used in functional and security context. While the approach is sound and relatively complete in the classic sense, it enables the use of algorithmic techniques that enable programmers to come up with leaky assertions that enable checking for information leaks in sensitive applications.

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Section: Formalization Of Our Approachmentioning

confidence: 99%