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| selective opening chosen ciphertext security directly from the ddh assumption | |
| Liu Shengli; Zhang Fangguo; Chen Kefei | |
| 2012 | |
| Conference Name | 6th International Conference on Network and System Security, NSS 2012 |
| Source | Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) |
| Pages | 100-112 |
| Conference Date | November 21, 2012 - November 23, 2012 |
| Conference Place | Wuyishan, Fujian, China |
| Indexed Type | EI |
| ISSN | 0302-9743 |
| ISBN | 9783642346002 |
| Department | (1) Dept. of Computer Science and Engineering Shanghai Jiao Tong University Shanghai 200240 China; (2) School of Information Science and Technology Sun Yat-sen University Guangzhou 510006 China; (3) State Key Laboratory of Information Security Institute of Software Chinese Academy of Sciences China; (4) Shanghai Key Laboratory of Scalable Computing and Systems Shanghai China |
| English Abstract | Chosen-ciphertext security has been well-accepted as a standard security notion for public key encryption. But in a multi-user surrounding, it may not be sufficient, since the adversary may corrupt some users to get the random coins as well as the plaintexts used to generate ciphertexts. The attack is named "selective opening attack". We study how to achieve full-fledged chosen-ciphertext security in selective opening setting directly from the DDH assumption. Our construction is free of chameleon hashing, since tags are created for encryptions in a flexible way to serve the security proof. © 2012 Springer-Verlag.; Chosen-ciphertext security has been well-accepted as a standard security notion for public key encryption. But in a multi-user surrounding, it may not be sufficient, since the adversary may corrupt some users to get the random coins as well as the plaintexts used to generate ciphertexts. The attack is named "selective opening attack". We study how to achieve full-fledged chosen-ciphertext security in selective opening setting directly from the DDH assumption. Our construction is free of chameleon hashing, since tags are created for encryptions in a flexible way to serve the security proof. © 2012 Springer-Verlag. |
| Keyword | Public Key Cryptography |
| Language | 英语 |
| Content Type | 会议论文 |
| URI | http://ir.iscas.ac.cn/handle/311060/15849 |
| Collection | 中国科学院软件研究所 |
| Recommended Citation GB/T 7714 | Liu Shengli,Zhang Fangguo,Chen Kefei. selective opening chosen ciphertext security directly from the ddh assumption[C],2012:100-112. |
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