New RSA-Based (Selectively) Convertible Undeniable Signature Schemes
New RSA-Based (Selectively) Convertible Undeniable Signature Schemes
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DOI:
10.1007/978-3-642-02384-2_8
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发表时间:
2009-06
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影响因子:
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通讯作者:
L. T. Phong;K. Kurosawa;W. Ogata
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文献类型:
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作者:
L. T. Phong;K. Kurosawa;W. Ogata
In this paper, we design and analyze some new and practical (selectively) convertible undeniable signature (SCUS) schemes in both random oracle and standard model, which enjoy several merits over existing schemes in the literature. In particular, we designthe firstpractical RSA-based SCUS schemes secure in the standard model. On the path, we also introduce two moduli RSA assumptions, including the strong twin RSA assumption, which is the RSA symmetry of the strong twin Diffie-Hellman assumption (Eurocrypt ’08).