Web: https://iacr.org/news/item/19609

Nov. 21, 2022, 2:24 p.m. |

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ePrint Report: A Universally Composable PAKE with Zero Communication Cost (And Why It Shouldn't Be Considered UC-Secure)

Lawrence Roy, Jiayu Xu


A Password-Authenticated Key Exchange (PAKE) protocol allows two parties to agree upon a cryptographic key, when the only information shared in advance is a low-entropy password. The standard security notion for PAKE (Canetti et al., Eurocrypt 2005) is in the Universally Composable (UC) framework. We show that unlike most UC security notions, UC PAKE does not imply correctness. While …

communication cost eprint report secure

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