| Title: | generic constructions of parallel key-insulated encryption |
| Author: | Hanaoka Goichiro
; Weng Jian
|
| Source: | Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
|
| Conference Name: | 7th International Conference on Security and Cryptography for Networks, SCN 2010
|
| Conference Date: | September
|
| Issued Date: | 2010
|
| Conference Place: | Amalfi, Italy
|
| Keyword: | Access control
; Public key cryptography
|
| Publish Place: | Germany
|
| Indexed Type: | ei
|
| ISSN: | 3029743
|
| ISBN: | 364215316X
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| Department: | (1) National Institute of Advanced Industrial Science and Technology, Tokyo, Japan; (2) Department of Computer Science, Jinan University, Guangzhou, China; (3) State Key Laboratory of Information Security, Institute of Software, Chinese Academy of Sciences, Beijing, China
|
| English Abstract: | Exposure of a secret key is a significant threat in practice. As a notion of security against key exposure, Dodis et al. advocated key-insulated security, and proposed concrete key-insulated encryption (KIE) schemes in which secret keys are periodically updated by using a physically "insulated" helper key. For significantly reducing possibility of exposure of the helper key, Hanaoka et al. further proposed the notion of parallel KIE (PKIE) in which multiple helper keys are used in alternate shifts. They also pointed out that in contrast to the case of the standard KIE, PKIE cannot be straightforwardly obtained from identity-based encryption (IBE). In this paper, we clarify that PKIE can be generically constructed by using a new primitive which we call one-time forward secure public key encryption (OTFS-PKE) and show that it is possible to construct OTFS-PKE from arbitrary IBE or hierarchical IBE (without degenerating into IBE). By using our method, we can obtain various new PKIE schemes which yield desirable properties. For example, we can construct first PKIE schemes from lattice or quadratic residuosity problems (without using bilinear maps), and PKIE with short ciphertexts and cheaper computational cost for both encryption and decryption. © 2010 Springer-Verlag Berlin Heidelberg. |
| Language: | 英语
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| Content Type: | 会议论文
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| URI: | http://ir.iscas.ac.cn/handle/311060/8784
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| Appears in Collections: | 中科院软件所图书馆_2010软件所会议论文
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| Recommended Citation: | |
Hanaoka Goichiro,Weng Jian. generic constructions of parallel key-insulated encryption[C]. 见:7th International Conference on Security and Cryptography for Networks, SCN 2010. Amalfi, Italy. September.
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