Wide Collisions in Practice


Detecting collisions in the power consumption of a modern cryptographic engine is usually difficult due to small leakages and possible countermeasures. Wide collisions offer a much stronger leakage that significantly facilitates their detection. This is the first time wide collisions are exploited in a power analysis attack. In this work we introduce a collision detection method based on the detection of characteristic outliers. Detection results are compared to optimized subspace-based templates. We show that the outlier detection method, while not requiring a template building phase, is almost as effective in detecting collisions as the template-based approach.
Original languageEnglish
Title of host publicationApplied Cryptography and Network Security
EditorsFeng Bao, Pierangela Samarati, Jianying Zhou
Number of pages15
Place of PublicationBerlin, Heidelberg
PublisherSpringer Berlin Heidelberg
Publication date06.2012
ISBN (Print)978-3-642-31283-0
ISBN (Electronic)978-3-642-31284-7
Publication statusPublished - 06.2012
Event10th International Conference on Applied Cryptography and Network Security - Singapore, Singapore
Duration: 26.06.201229.06.2012


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