Identity-based proxy re-encryption without random oracles

被引：0
|
作者：
Chu, Cheng-Kang [1 ]
Tzeng, Wen-Guey [1 ]
机构：
[1] Natl Chiao Tung Univ, Dept Comp Sci, Hsinchu 300, Taiwan
来源：
INFORMATION SECURITY, PROCEEDINGS | 2007年 / 4779卷
关键词：
proxy re-encryption; identity-based encryption; standard model;
D O I：
暂无
中图分类号：
TP301 [理论、方法];
学科分类号：
081202 ;
摘要：
A proxy re-encryption scheme allows Alice to temporarily delegate the decryption rights to Bob via a proxy. Alice gives the proxy a re-encryption key so that the proxy can convert a ciphertext for Alice into the ciphertext for Bob. In this paper, we propose two identity-based proxy re-encryption schemes, which are both proved secure in the standard model. The first one is efficient in both computation and ciphertext length, and the other one achieves chosen-ciphertext security. Our solutions answer the open problems left in the previous work.
引用
收藏
页码：189 / +
页数：3
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