Sphinx-in-the-Head: Group Signatures from Symmetric Primitives

ePrint Report: Sphinx-in-the-Head: Group Signatures from Symmetric Primitives

Liqun Chen, Changyu Dong, Christopher J. P. Newton, Yalan Wang

Group signatures and their variants have been widely used in privacy-sensitive scenarios such as anonymous authentication and attestation. In this paper, we present a new post-quantum group signature scheme from symmetric primitives. Using only symmetric primitives makes the scheme less prone to unknown attacks than basing the design on newly proposed hard problems whose security is less well-understood. However, symmetric primitives do …

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