A probable cheating-free (t, n) threshold secret sharing scheme with enhanced blockchain

【Author】 Biswas, Anindya Kumar; Dasgupta, Mou; Ray, Sangram; Khan, Muhammad Khurram

【Source】COMPUTERS & ELECTRICAL ENGINEERING

【影响因子】4.152

【Abstract】A cheating-free (t, n) threshold secret sharing scheme using Blockchain is presented, where Shamir's technique is followed and the Blockchain vulnerabilities due to PoW/PoS (Proof-ofWork/Stake) consensus, are removed. We address the shares' cheating issues and design a Blockchain based SS scheme, in which the participants' shares are recorded secretly in a block and the dealer's identity along with other parameters are made visible through the genesis block. Our scheme uses a short-length Blockchain comprising 2 blocks per secret negotiation session. The main objectives are to improve Shamir's secret sharing scheme with Blockchain such that the cheating activities from dealer and/or participants become infeasible, and to enhance Blockchain technology with a consensus mechanism using Blockchain based SS scheme such that insecurity of PoW/PoS consensus are avoidable. The security and performance analysis of the scheme are provided. Although Blockchain increases some overheads, it makes a complete cheating-free SS scheme.

【Keywords】Secret sharing scheme; Lagrange polynomial interpolation; Blockchain technology; PoW and PoS consensus; Threshold cryptography; Key Management

【发表时间】2022 MAY

【收录时间】2022-05-22

【文献类型】实证性文章

【主题类别】

区块链技术-核心技术-共识机制