[Resource Topic] 2019/724: Breaking Tweakable Enciphering Schemes using Simon's Algorithm

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Breaking Tweakable Enciphering Schemes using Simon’s Algorithm

Authors: Sebati Ghosh, Palash Sarkar


We show the applicability of Simon’s period finding quantum algorithm to the cryptanalysis of several tweakable enciphering schemes (TESs), namely, CMC, EME, XCB, TET and FAST. For all of the five TESs, we show distinguishing attacks, while for XCB, TET and FAST, the attacks reveal portions of the secret keys.

ePrint: https://eprint.iacr.org/2019/724

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