TY - JOUR
T1 - Efficient Verifiably Encrypted ECDSA-Like Signatures and Their Applications
AU - Yang, Xiao
AU - Liu, Mengling
AU - Au, Man Ho
AU - Luo, Xiapu
AU - Ye, Qingqing
N1 - Manuscript received September 21, 2021; revised February 1, 2022; accepted March 16, 2022. Date of publication April 13, 2022; date of current version April 29, 2022. This work was supported in part by the National Science Foundation China under Grant 61972332, in part by the Innovation Technology Fund under Grant ITS/261/20, in part by the Hong Kong Research Grant Council under Grant HKU15211120, Grant PolyU15219319, and Grant C2004-21GF, and in part by the HKU-SCF Fintech Academy Research and Development Project Funding Scheme. The associate editor coordinating the review of this manuscript and approving it for publication was Dr. Ghassan Karame. (Corresponding author: Man Ho Au.)
Publisher Copyright:
© 2005-2012 IEEE.
PY - 2022/4
Y1 - 2022/4
N2 - Verifiably encrypted signature (VES) allows a signer to encrypt a signature under the public key of a trusted third party (aka adjudicator) in a verifiable manner. Recently, Yang et al. proposed a practical verifiably encrypted signature scheme for ECDSA and initiated the study of escrow protocol for Bitcoin via VES. This paper generalizes and improves the VES scheme of Yang et al., such that it covers a family of signatures with similar structures, including ECDSA, Schnorr and their variants. Our construction is very efficient: comparing with Yang et al. 's construction, the size of the resulting VES (for ECDSA) is reduced by more than 25 times. The only caveat is that the adjudicator is required to store a look-up table of size around 270MB. Our scheme naturally gives rise to escrow protocols for mainstream cryptocurrencies that employ ECDSA-like signatures to authorise transaction, including Bitcoin, Ethereum, Cardano, Chainlink, etc.
AB - Verifiably encrypted signature (VES) allows a signer to encrypt a signature under the public key of a trusted third party (aka adjudicator) in a verifiable manner. Recently, Yang et al. proposed a practical verifiably encrypted signature scheme for ECDSA and initiated the study of escrow protocol for Bitcoin via VES. This paper generalizes and improves the VES scheme of Yang et al., such that it covers a family of signatures with similar structures, including ECDSA, Schnorr and their variants. Our construction is very efficient: comparing with Yang et al. 's construction, the size of the resulting VES (for ECDSA) is reduced by more than 25 times. The only caveat is that the adjudicator is required to store a look-up table of size around 270MB. Our scheme naturally gives rise to escrow protocols for mainstream cryptocurrencies that employ ECDSA-like signatures to authorise transaction, including Bitcoin, Ethereum, Cardano, Chainlink, etc.
KW - cryptocurrency
KW - escrow protocol
KW - Verifiably encrypted signature
UR - http://www.scopus.com/inward/record.url?scp=85128678296&partnerID=8YFLogxK
U2 - 10.1109/TIFS.2022.3165978
DO - 10.1109/TIFS.2022.3165978
M3 - Journal article
AN - SCOPUS:85128678296
SN - 1556-6013
VL - 17
SP - 1573
EP - 1582
JO - IEEE Transactions on Information Forensics and Security
JF - IEEE Transactions on Information Forensics and Security
ER -