QUAIL: A Quantitative Security Analyzer for Imperative Code

Fabrizio Biondi, Andrzej Wasowski, Louis-Marie Traonouez, Axel Legay

Research output: Conference Article in Proceeding or Book/Report chapterArticle in proceedingsResearchpeer-review


Quantitative security analysis evaluates and compares how effectively a
system protects its secret data. We introduce QUAIL, the first tool able to perform an arbitrary-precision quantitative analysis of the security of a system depending on private information. QUAIL builds a Markov Chain model of the system’s behavior as observed by an attacker, and computes the correlation between the system’s observable output and the behavior depending on the private information, obtaining the expected amount of bits of the secret that the attacker will infer by observing the system. QUAIL is able to evaluate the safety of randomized protocols depending on secret data, allowing to verify a security protocol’s effectiveness.
We experiment with a few examples and show that QUAIL’s security analysis is
more accurate and revealing than results of other tools
Original languageEnglish
Title of host publicationComputer Aided Verification - 25th International Conference, CAV 2013, Saint Petersburg, Russia, July 13-19, 2013. Proceedings.
Number of pages6
Publication dateJul 2013
ISBN (Print)978-3-642-39798-1
Publication statusPublished - Jul 2013
SeriesLecture Notes in Computer Science


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