Resilient Custody of Crypto-Assets, and Threshold Multisignatures

Mathematics

Vincenzo Di Nicola¹  Riccardo Longo²  Gaetano Russo²  Federico Mazzone² 

[1] Conio Inc., San Francisco, CA 94105, USA;Department of Mathematics, University of Trento, Povo, 38123 Trento, Italy;

关键词: custody of cryptocurrencies;    digital assets;    applied cryptography;    threshold multisignatures;    secure multiparty computation;   

DOI  :  10.3390/math8101773

来源: DOAJ

【 摘 要 】

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.

【 授权许可】

Unknown