Compact and Divisible E-Cash with Threshold Issuance. (arXiv:2303.08221v1 [cs.CR])

Web: http://arxiv.org/abs/2303.08221

Decentralized, offline, and privacy-preserving e-cash could fulfil the need
for both scalable and byzantine fault-resistant payment systems. Existing
offline anonymous e-cash schemes are unsuitable for distributed environments
due to a central bank. We construct a distributed offline anonymous e-cash
scheme, in which the role of the bank is performed by a quorum of authorities,
and present its two instantiations. Our first scheme is compact, i.e. the cost
of the issuance protocol and the size of a wallet are independent of …

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