New Fuzzy Identity-Based Encryption in the Standard Model
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| Název: | New Fuzzy Identity-Based Encryption in the Standard Model |
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| Autoři: | Yanli Ren, Dawu Gu, Shuozhong Wang, Xinpeng Zhang |
| Přispěvatelé: | The Pennsylvania State University CiteSeerX Archives |
| Zdroj: | http://www.mii.lt/Informatica/pdf/INFO788.pdf. |
| Rok vydání: | 2009 |
| Sbírka: | CiteSeerX |
| Témata: | cryptography, fuzzy identity-based encryption, IND-FID-CCA2 security, standard |
| Popis: | In a fuzzy identity-based encryption (IBE) scheme, a user with the secret key for an identity ID is able to decrypt a ciphertext encrypted with another identity ID ′ if and only if ID and ID ′ are within a certain distance of each other as judged by some metric. Fuzzy IBE also allows to encrypt a document to all users that have a certain set of attributes. In 2005, Sahai and Waters first proposed the notion of fuzzy IBE and proved the security of their scheme under the selective-ID model. Currently, there is no fuzzy IBE scheme available that is fully CCA2 secure in the standard model. In this paper, we propose a new fuzzy IBE scheme which achieves IND-FID-CCA2 security in the standard model with a tight reduction. Moreover, the size of public parameters is independent of the number of attributes associated with an identity. |
| Druh dokumentu: | text |
| Popis souboru: | application/pdf |
| Jazyk: | English |
| Relation: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.472.9942; http://www.mii.lt/Informatica/pdf/INFO788.pdf |
| Dostupnost: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.472.9942 http://www.mii.lt/Informatica/pdf/INFO788.pdf |
| Rights: | Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
| Přístupové číslo: | edsbas.5BDAA9B4 |
| Databáze: | BASE |
Nájsť tento článok vo Web of Science | Abstrakt: | In a fuzzy identity-based encryption (IBE) scheme, a user with the secret key for an identity ID is able to decrypt a ciphertext encrypted with another identity ID ′ if and only if ID and ID ′ are within a certain distance of each other as judged by some metric. Fuzzy IBE also allows to encrypt a document to all users that have a certain set of attributes. In 2005, Sahai and Waters first proposed the notion of fuzzy IBE and proved the security of their scheme under the selective-ID model. Currently, there is no fuzzy IBE scheme available that is fully CCA2 secure in the standard model. In this paper, we propose a new fuzzy IBE scheme which achieves IND-FID-CCA2 security in the standard model with a tight reduction. Moreover, the size of public parameters is independent of the number of attributes associated with an identity. |
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