Resilient Custody of Crypto-Assets, and Threshold Multisignatures

【Author】 Di Nicola, Vincenzo; Longo, Riccardo; Mazzone, Federico; Russo, Gaetano

【Source】MATHEMATICS

【影响因子】2.592

【Abstract】Ensuring safe custody of crypto-assets, while at the same time allowing a user to easily access and transfer them, is one of the biggest challenges of this nascent industry. This is even harder considering also the multiple technological implementations behind each crypto-asset. Here we present a survey of the various solutions for this custody problem, comparing advantages and disadvantages. Then we delve deeper into some interesting schemes based on secure multiparty computation, which give a blockchain-agnostic solution that balances security, safety, and transactional ease of use, and in particular, a protocol that enhances practicality by exploiting a party that may stay offline during the key generation.

【Keywords】custody of cryptocurrencies; digital assets; applied cryptography; threshold multisignatures; secure multiparty computation

【发表时间】2020 OCT

【收录时间】2022-01-02

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