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CLC number: TP311

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Received: 2008-10-15

Revision Accepted: 2009-10-05

Crosschecked: 2009-08-14

Cited: 8

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Journal of Zhejiang University SCIENCE A 2009 Vol.10 No.12 P.1790-1800


Certificateless key-insulated signature without random oracles

Author(s):  Zhong-mei WAN, Xue-jia LAI, Jian WENG, Sheng-li LIU, Yu LONG, Xuan HONG

Affiliation(s):  Department of Computer Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China; more

Corresponding email(s):   wanmei@sjtu.edu.cn

Key Words:  Key-insulated, Key leakage, Certificateless, Bilinear map

Zhong-mei WAN, Xue-jia LAI, Jian WENG, Sheng-li LIU, Yu LONG, Xuan HONG. Certificateless key-insulated signature without random oracles[J]. Journal of Zhejiang University Science A, 2009, 10(12): 1790-1800.

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publisher="Zhejiang University Press & Springer",

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%T Certificateless key-insulated signature without random oracles
%A Zhong-mei WAN
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%A Jian WENG
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%A Xuan HONG
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T1 - Certificateless key-insulated signature without random oracles
A1 - Zhong-mei WAN
A1 - Xue-jia LAI
A1 - Jian WENG
A1 - Sheng-li LIU
A1 - Yu LONG
A1 - Xuan HONG
J0 - Journal of Zhejiang University Science A
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EP - 1800
%@ 1673-565X
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PB - Zhejiang University Press & Springer
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DOI - 10.1631/jzus.A0820714

Leakage of the private key has become a serious problem of menacing the cryptosystem security. To reduce the underlying danger induced by private key leakage, Dodis et al.(2003) proposed the first key-insulated signature scheme. To handle issues concerning the private key leakage in certificateless signature schemes, we devise the first certificateless key-insulated signature scheme. Our scheme applies the key-insulated mechanism to certificateless cryptography, one with neither certificate nor key escrow. We incorporate Waters (2005)’s signature scheme, Paterson and Schuldt (2006)’s identity-based signature scheme, and Liu et al.(2007)’s certificateless signature scheme to obtain a certificateless key-insulated signature scheme. Our scheme has two desirable properties. First, its security can be proved under the non-pairing-based generalized bilinear Diffie-Hellman (NGBDH) conjecture, without utilizing the random oracle model; second, it solves the key escrow problem in identity-based key-insulated signatures.

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article


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