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2016

Threshold-optimal DSA/ECDSA signatures and an application to Bitcoin wallet security

5 years 6 months ago
Threshold-optimal DSA/ECDSA signatures and an application to Bitcoin wallet security
Abstract. While threshold signature schemes have been presented before, there has never been an optimal threshold signature algorithm for DSA. Due to the properties of DSA, it is far more difficult to create a threshold scheme for it than for other signature algorithms. In this paper, we present a breakthrough scheme that provides a threshold DSA algorithm that is efficient and optimal. We also present a compelling application to use our scheme: securing Bitcoin wallets. Bitcoin thefts are on the rise, and threshold DSA is necessary to secure Bitcoin wallets. Our scheme is the first general threshold DSA scheme that does not require an honest majority and is useful for securing Bitcoin wallets.
Rosario Gennaro, Steven Goldfeder, Arvind Narayana
Added 03 Apr 2016
Updated 03 Apr 2016
Type Journal
Year 2016
Where IACR
Authors Rosario Gennaro, Steven Goldfeder, Arvind Narayanan
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