Designated Verifier Signature with Claimability

被引：4

作者：

Yamashita, Kyosuke ^{[1
]}

Hara, Keisuke ^{[2
,3
]}

Watanabe, Yohei ^{[4
]}

Yanai, Naoto ^{[1
,5
]}

Shikata, Junji ^{[3
]}

机构：

[1] Osaka Univ, Suita, Osaka, Japan

[2] Natl Inst Adv Ind Sci & Technol, Koto Ku, Tokyo, Japan

[3] Yokohama Natl Univ, Yokohama, Kanagawa, Japan

[4] Univ Electro Commun, Chofu, Tokyo, Japan

[5] Japan Datacom Co Ltd, Minato Ku, Tokyo, Japan

来源：

PROCEEDINGS OF THE 10TH ACM ASIA PUBLIC-KEY CRYPTOGRAPHY WORKSHOP, APKC 2023 | 2023年

关键词：

designated verifier signature; ring signature; anonymity; traceability; claimability; RING SIGNATURES;

D O I：

10.1145/3591866.3593071

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

This paper considers the problem of balancing traceability and anonymity in designated verifier signatures (DVS), which are a kind of group-oriented signatures. That is, we propose claimable designated verifier signatures (CDVS), where a signer is able to claim that he/she indeed created a signature later. Ordinal DVS does not provide any traceability, which could indicate too strong anonymity. Thus, adding claimability, which can be seen as a sort of traceability, moderates anonymity. We demonstrate two generic constructions of CDVS from (i) ring signatures, (non-ring) signatures, pseudorandom function, and commitment scheme, and (ii) claimable ring signatures (by Park and Sealfon, CRYPTO'19).

引用

页码：21 / 32

页数：12

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