【Author】
Yang, Xiao; Lau, Wang Fat; Ye, Qingqing; Au, Man Ho; Liu, Joseph K.; Cheng, Jacob
【Source】IEEE TRANSACTIONS ON INFORMATION FORENSICS AND SECURITY
【Abstract】An escrow protocol for Bitcoin allows fair trading using bitcoins. To ensure fairness, the existing proposals made various trade-offs between trust, privacy, and efficiency. In this work, we evaluate the existing escrow protocols for cryptocurrency and propose a practical escrow protocol for Bitcoin that is: (a) computationally efficient; (b) round efficient; and (c) privacy-preserving. The core component of our escrow protocol for Bitcoin is a new verifiably encrypted ECDSA scheme, which may be of independent interest. Furthermore, we implement the escrow protocol for Bitcoin in Bitcoin mainnet, demonstrating the feasibility of our protocol.
【Keywords】Bitcoin; Protocols; Encryption; Privacy; Escrow protocol; Bitcoin; verifiably encrypted ECDSA
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