A certificate-based proxy cryptosystem with revocable proxy decryption power

被引：0

作者：

Wang, Lihua ^{[1
]}

Shao, Jun ^{[2
]}

Cao, Zhenfu ^{[2
]}

Mambo, Masahiro ^{[3
]}

Yamamura, Akihiro ^{[1
]}

机构：

[1] Natl Inst Informat & Commun Technol, Informat Secur Ctr, Koganei, Tokyo 1848795, Japan

[2] Shanghai Jiao Tong Univ, Dept Comp Sci & Engn, Shanghai 200240, Peoples R China

[3] Univ Tsukuba, Grad Sch Syst & Informat, Tsukuba, Ibaraki 3058573, Japan

来源：

PROGRESS IN CRYPTOLOGY - INDOCRYPT 2007 | 2007年 / 4859卷

关键词：

proxy cryptosystem; pairing; certificate-based encryption (CBE);

D O I：

暂无

中图分类号：

TP301 [理论、方法];

学科分类号：

081202 ;

摘要：

We present a proxy cryptosystem based on a certificate-based encryption scheme. The proposed scheme inherits the merits of certificate-based encryption systems: no-key-escrow and implicit certification. In addition, the proposed scheme allows the proxy's decryption power to be revoked even during the valid period of the proxy key without changing the original decryptor's public information. Few proxy schemes have this property, and ours is more efficient than the existing ones. We show that our proposal is IND-CBPd-Rev-CCA secure under the bilinear Diffie-Hellman assumption in the random oracle model.

引用

页码：297 / 311

页数：15

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