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

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题名:	New convertible ring signatures based on RSA
作者:	Tso, Raylin 左瑞麟 Huan, Kaibin
贡献者:	資科系
关键词:	Convertible ring signature;Provable security;Random oracle;Reveal non-signers;RSA
日期:	2013-09
上传时间:	2015-05-21 16:16:10 (UTC+8)
摘要:	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.
關聯:	Information (Japan), 16(9B), 7163-7173
数据类型:	article
显示于类别:	[資訊科學系] 期刊論文

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