Securing Blockchain Wallets Efficiently Based on Threshold ECDSA Scheme Without Trusted Center

Zhou, Jian; Qu, Ran; Sun, Lei

doi:10.1109/acctcs52002.2021.00018

Cited by 6 publications

(2 citation statements)

References 5 publications

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“…Key Scheme [35] Improving collaborative key generation and signature [37] Combination with a cold and hot wallet for privacy [101] A practical way to public key encryption [102] A p2p wallet scheme with a routing protocol [103] A lightweight wallet based on TEE [104] A new scheme for creating sub-wallet keys [105] The shared key generated by T-ECDSA for signing [106] Combine signatures into one based on bloom filter…”

Section: Referencementioning

confidence: 99%

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A Survey of DeFi Security: Challenges and Opportunities

Li¹,

Bu²,

Li³

et al. 2022

Preprint

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Decentralized finance (DeFi), which is a promising domain since the era of blockchain 2.0, locked $200 billion in April 2022. However, it quickly dropped to $100 billion in May 2022, which makes us realize that security issues in this area are still a challenging job. DeFi is more complex than traditional finance because it is decentralized through blockchain and without a trustworthy third-party institution to act as a guarantee. So it owns not only financial properties but also technical aspects. Existing synthesis work for DeFi tends to ignore the relevance of various layers of security for the whole system. In addition, distinct layers have different means of protection against specific vulnerabilities, which is not considered by existing analytical work. In this paper, we perform a vulnerability analysis for the entire technology layer of the DeFi application, and then we collect the most impactive attacks in recent years. Finally, we summarize the existing optimization approaches for different layers and provide some challenges and future directions.

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Section: Referencementioning

confidence: 99%

“…To defend against a single point of failure, Jian et al [105] proposed a threshold-based ECDSA (T-ECDSA) scheme. When the number of participants is within the threshold, they created shared private keys to sign transactions.…”

Section: Referencementioning

confidence: 99%

A Survey of DeFi Security: Challenges and Opportunities

Li¹,

Bu²,

Li³

et al. 2022

Preprint

View full text Add to dashboard Cite

show abstract

A survey of DeFi security: Challenges and opportunities

et al. 2022

Journal of King Saud University - Computer and Information Scie

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An Efficient Double Parameter Elliptic Curve Digital Signature Algorithm for Blockchain

2021

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The classic Elliptic curve digital Signature Algorithm (ECDSA) uses one inversion operation in the process of signature and verification, which greatly reduces the efficiency of digital signatures. Up to now, most research schemes improve efficiency by reducing reverse operations, but they fail to attach importance to such issues as forgery signature attack. At the same time, in the blockchain, the weak randomness of ECDSA will lead to the attack of forging random numbers, which is a potential problem of digital currency transactions. In consideration of this reason, in this article, an improved provably secure elliptic curve digital signature scheme is constructed. First, the new scheme introduces double parameters in the signature process, that can effectively resist the weak randomness attack of ECDSA in Bitcoin , and can be applied to blockchain digital currency trading systems. Second, in the random oracle model, it is provably indistinguishable against Elliptic Curve Discrete Logarithm Problem (ECDLP) under the super type I and type II adversary. Third, the new scheme avoids the inverse operation in the signature and verification phase. Compared with the ECDSA, the running speed is optimized by 50.1% . Similarly, the proposed scheme has higher computational efficiency than other existing algorithms.INDEX TERMS ECDSA, Blockchain, ECDLP, random oracles, weak randomness.

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Securing Blockchain Wallets Efficiently Based on Threshold ECDSA Scheme Without Trusted Center

Cited by 6 publications

References 5 publications

A Survey of DeFi Security: Challenges and Opportunities

A Survey of DeFi Security: Challenges and Opportunities

A survey of DeFi security: Challenges and opportunities

An Efficient Double Parameter Elliptic Curve Digital Signature Algorithm for Blockchain

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