[Resource Topic] 2020/596: Relationships between quantum IND-CPA notions

Welcome to the resource topic for 2020/596

Title:
Relationships between quantum IND-CPA notions

Authors: Tore Vincent Carstens, Ehsan Ebrahimi, Gelo Tabia, Dominique Unruh

Abstract:

An encryption scheme is called indistinguishable under chosen plaintext attack (short IND-CPA) if an attacker cannot distinguish the encryptions of two messages of his choice. There are other variants of this definition but they all turn out to be equivalent in the classical case. In this paper, we give a comprehensive overview of these different variants of IND-CPA for symmetric encryption schemes in the quantum setting. We investigate the relationships between these notions and prove various equivalences, implications, non-equivalences, and non-implications between these variants.

ePrint: https://eprint.iacr.org/2020/596

Talk: https://www.youtube.com/watch?v=x4FsJOegDRo

Slides: https://iacr.org/submit/files/slides/2021/tcc/tcc2021/249/slides.pdf

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