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| Content Provider | ACM Digital Library |
|---|---|
| Author | Wang, Chao Eldib, Hassan Schaumont, Patrick |
| Copyright Year | 2014 |
| Abstract | A common strategy for designing countermeasures against power-analysis-based side-channel attacks is using random masking techniques to remove the statistical dependency between sensitive data and side-channel emissions. However, this process is both labor intensive and error prone and, currently, there is a lack of automated tools to formally assess how secure a countermeasure really is. We propose the first SMT-solver-based method for formally verifying the security of a masking countermeasure against such attacks. In addition to checking whether the sensitive data are $\textit{masked}$ by random variables, we also check whether they are perfectly masked, that is, whether the intermediate computation results in the implementation of a cryptographic algorithm are independent of the secret key. We encode this verification problem using a series of quantifier-free first-order logic formulas, whose satisfiability can be decided by an off-the-shelf SMT solver. We have implemented the proposed method in a software verification tool based on the LLVM compiler frontend and the Yices SMT solver. Our experiments on a set of recently proposed masking countermeasures for cryptographic algorithms such as AES and MAC-Keccak show the method is both effective in detecting power side-channel leaks and scalable for practical use. |
| Starting Page | 1 |
| Ending Page | 24 |
| Page Count | 24 |
| File Format | |
| ISSN | 1049331X |
| e-ISSN | 15577392 |
| DOI | 10.1145/2685616 |
| Volume Number | 24 |
| Issue Number | 2 |
| Journal | ACM Transactions on Software Engineering and Methodology (TOSEM) |
| Language | English |
| Publisher | Association for Computing Machinery (ACM) |
| Publisher Date | 2014-12-23 |
| Publisher Place | New York |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | AES MAC-Keccak Side-channel attack Countermeasure Cryptographic software Differential power analysis Perfect masking Satisfiability modulo theory (SMT) |
| Content Type | Text |
| Resource Type | Article |
| Subject | Software |
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