Balanced Encoding to Mitigate Power Analysis: A Case Study

Cong Chen, Thomas Eisenbarth, Aria Shahverdi, Xin Ye


Most side channel countermeasures for software implementations of cryptography either rely on masking or randomize the execution order of the cryptographic implementation. This work proposes a countermeasure that has constant leakage in common linear leakage models. Constant leakage is achieved not only for internal state values, but also for their transitions. The proposed countermeasure provides perfect protection in the theoretical leakage model. To study the practical relevance of the proposed countermeasure, it is applied to a software implementation of the block cipher Prince. This case study allows us to give realistic values for resulting implementation overheads as well as for the resulting side channel protection levels that can be achieved in realistic implementation scenarios.
Original languageEnglish
Title of host publicationSmart Card Research and Advanced Applications
EditorsMarc Joye, Amir Moradi
Number of pages15
Place of PublicationCham
PublisherSpringer International Publishing
Publication date17.03.2015
ISBN (Print)978-3-319-16762-6
ISBN (Electronic)978-3-319-16763-3
Publication statusPublished - 17.03.2015
Event13th International Conference on Smart Card Research and Advanced Applications - Paris, France
Duration: 05.11.201407.11.2014


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