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政大機構典藏 > 資訊學院 > 資訊科學系 > 會議論文 > Item 140.119/138288

Please use this identifier to cite or link to this item: https://nccur.lib.nccu.edu.tw/handle/140.119/138288

Title:	Partially Blind ECDSA Scheme and Its Application to Bitcoin
Authors:	左瑞麟 Tso, Raylin Huang, Hongxun Liu, Zi-Yuan
Contributors:	資科系
Keywords:	Partially blind signature;ECDSA;Bitcoin;Blockchain
Date:	2021-02
Issue Date:	2021-12-09 16:09:57 (UTC+8)
Abstract:	Blind signatures allow a user to obtain a signature without revealing message information to the signer. However, in many cases, the signer must record additional information relevant to the signature. Therefore, the concept of partially blind signature is introduced that enables the signer to obtain some information from the signed message. With the development of blockchain technology, users increasingly use Bitcoin for purchases and transactions with coin providers. Some studies have indicated that Elliptic Curve Digital Signature Algorithm (ECDSA)-based blind signatures are compatible with Bitcoin because they prevent the linking of sensitive information due to the untamability of Bitcoin. However, these approaches are not sufficiently flexible because blind signatures do not allow the signer to obtain any information. Here, we propose an ECDSA-based partially blind signature scheme. Security proofs are provided to demonstrate that the proposed scheme have satisfactory unforgeability and blindness. To the best of our knowledge, compared with other state-of-the-art schemes, our scheme is the first ECDSA-based partially blind signature scheme compatible with the current Bitcoin protocol.
Relation:	2021 IEEE Conference on Dependable and Secure Computing (DSC), The University of Aizu, pp.1-8
Data Type:	conference
DOI 連結:	https://doi.org/10.1109/DSC49826.2021
DOI:	10.1109/DSC49826.2021
Appears in Collections:	[資訊科學系] 會議論文

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