CCA-Secure Leakage-Resilient Identity-Based Encryption without q-Type Assumptions

被引：1
|
作者：
Tomita, Toi [1 ]
Ogata, Wakaha [1 ]
Kurosawa, Kaoru [2 ]
Kuwayama, Ryo [1 ]
机构：
[1] Tokyo Inst Technol, Tokyo 1528552, Japan
[2] Ibaraki Univ, Hitachi, Ibaraki 3168511, Japan
来源：
IEICE TRANSACTIONS ON FUNDAMENTALS OF ELECTRONICS COMMUNICATIONS AND COMPUTER SCIENCES | 2020年 / E103A卷 / 10期
关键词：
identity-based encryption; leakage-resilience; CCA-security; CRYPTOGRAPHY;
D O I：
10.1587/transfun.2019DMP0013
中图分类号：
TP3 [计算技术、计算机技术];
学科分类号：
0812 ;
摘要：
In this paper, we propose a new leakage-resilient identity-based encryption (IBE) scheme that is secure against chosen-ciphertext attacks (CCA) in the bounded memory leakage model. The security of our scheme is based on the external k-Linear assumption. It is the first CCA-secure leakage-resilient IBE scheme which does not depend on q-type assumptions. The leakage rate 1/10 is achieved under the XDLIN assumption (k = 2).
引用
收藏
页码：1157 / 1166
页数：10
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