政大機構典藏-National Chengchi University Institutional Repository(NCCUR):Item 140.119/75229

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政大機構典藏 > 資訊學院 > 資訊科學系 > 期刊論文 > Item 140.119/75229

Please use this identifier to cite or link to this item: https://nccur.lib.nccu.edu.tw/handle/140.119/75229

Title:	New convertible ring signatures based on RSA
Authors:	Tso, Raylin 左瑞麟 Huan, Kaibin
Contributors:	資科系
Keywords:	Convertible ring signature;Provable security;Random oracle;Reveal non-signers;RSA
Date:	2013-09
Issue Date:	2015-05-21 16:16:10 (UTC+8)
Abstract:	Convertible ring signatures with gradual revelation of non-signers (GR-CRS) is first introduced by Tso in 2010. With this scheme, a genuine signer can convert a ring signature into a traditional single signer digital signature. However, a genuine signer is also able to reveal part of non-signers while still preserving the unconditional signer anonymity. The GR-CRS scheme is very useful in many applications when some members in the ring signature are not trusted by some verifiers. However, we notice that Tso`s scheme is based on the discrete dogarithm assumption, and therefore, cannot work with schemes based on RSA. As we know, RSA is by far the most widely used public key cryptosystem, so it is natural to consider whether we could produce a GR-CRS scheme based on RSA. In this study, we address this problem by proposing a new GR-CRS scheme based on RSA. The security of the new scheme is rigorously proved using the random oracle model based on the hardness of the RSA assumption and the intractability of inverting cryptographic one-wav hash functions. © 2013 International Information Institute.
Relation:	Information (Japan), 16(9B), 7163-7173
Data Type:	article
Appears in Collections:	[資訊科學系] 期刊論文

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