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Dynamic Threshold ECDSA Signature and Application to Asset Custody in Blockchain
Journal of Information Security and Applications, 2021Abstract The centralized exchange is one of the hottest DeFi applications based on blockchain transaction systems. However, depositing user assets to the exchanges brings the security risks of assets misappropriation. Threshold cryptosystem can effectively solve the drawbacks of centralized hosting by assigning the assets authorization to multiple ...
Wenping Ma, Huili Wang, Haibin Zheng
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Secure Two-Party Threshold ECDSA From ECDSA Assumptions
2018 IEEE Symposium on Security and Privacy (SP), 2018The Elliptic Curve Digital Signature Algorithm (ECDSA) is one of the most widely used schemes in deployed cryptography. Through its applications in code and binary authentication, web security, and cryptocurrency, it is likely one of the few cryptographic algorithms encountered on a daily basis by the average person.
Jack Doerner +2 more
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OptiVersa-ECDSA: Fast Threshold-ECDSA With Cheater Identification for Blockchains
IEEE Transactions on Dependable and Secure ComputingYunlv Lv
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Threshold ECDSA in Three Rounds
2024 IEEE Symposium on Security and Privacy (SP)Jack Doerner +2 more
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Fast Multiparty Threshold ECDSA With Fast Trustless Setup
Proceedings of the 2018 ACM SIGSAC Conference on Computer and Communications Security, 2018A threshold signature scheme enables distributed signing among n players such that any subgroup of size $t+1$ can sign, whereas any group with t or fewer players cannot. While there exist previous threshold schemes for the ECDSA signature scheme, we are the first protocol that supports multiparty signatures for any $t leq n$ with an efficient ...
Rosario Gennaro, Steven Goldfeder
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UC Non-Interactive, Proactive, Threshold ECDSA With Identifiable Aborts
Proceedings of the 2020 ACM SIGSAC Conference on Computer and Communications Security, 2020Building on the Gennaro & Goldfeder and Lindell & Nof protocols (CCS '18), we present two threshold ECDSA protocols, for any number of signatories and any threshold, that improve as follows over the state of the art: -- For both protocols, only the last round requires knowledge of the message, and the other rounds can take place in a preprocessing ...
Ran Canetti +2 more
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Threshold-Optimal DSA/ECDSA Signatures and an Application to Bitcoin Wallet Security
Lecture Notes in Computer Science, 2016While threshold signature schemes have been presented before, there has never been an optimal threshold signature algorithm for DSA. The properties of DSA make it quite challenging to build a threshold version. In this paper, we present a threshold DSA scheme that is efficient and optimal.
Rosario Gennaro, Steven Goldfeder
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Efficient Weighted Threshold ECDSA for Securing Bitcoin Wallet
2017 ISEA Asia Security and Privacy (ISEASP), 2017Bitcoin is a digital currency based on cryptographic algorithms. All the transactions of this currency are recorded and stored in a publically available database called blockchain. Since, these transactions are available to everyone, bitcoins must be stored in a secured wallet. These bitcoin wallets can be opened only by its secret key. And if once the
Kunwar Singh
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Proceedings 2023 Network and Distributed System Security Symposium, 2023
Harry W. H. Wong +3 more
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Harry W. H. Wong +3 more
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Unstoppable Wallets: Chain-assisted Threshold ECDSA and its Applications
Proceedings of the 19th ACM Asia Conference on Computer and Communications SecurityThe security and usability of cryptocurrencies and other blockchain-based applications depend on the secure management of cryptographic keys. However, current approaches for managing these keys often rely on third parties, trusted to be available at a minimum, and even serve as custodians in some solutions, creating single points of failure and ...
Guy Zyskind +2 more
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