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cs.CR2022★ 1 cited
A note on a Code-Based Signature Scheme
Giuseppe D'Alconzo
In this work, we exploit a serious security flaw in a code-based signature scheme from a 2019 work by Liu, Yang, Han and Wang. They adapt the McEliece cryptosystem to obtain a new…
cs.CC2022★ 1 cited
A Note on the Hardness of Problems from Cryptographic Group Actions
Giuseppe D'Alconzo
Given a cryptographic group action, we show that the Group Action Inverse Problem (GAIP) and other related problems cannot be NP-hard unless the Polynomial Hierarchy collapses. We…