TIIS (한국인터넷정보학회)
Current Result Document :
| 한글제목(Korean Title) |
Attribute-Based Data Sharing with Flexible and Direct Revocation in Cloud Computing |
| 영문제목(English Title) |
Attribute-Based Data Sharing with Flexible and Direct Revocation in Cloud Computing |
| 저자(Author) |
inghui Zhang
Xiaofeng Chen
Jin Li
Hui Li
Fenghua Li
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| 원문수록처(Citation) |
VOL 08 NO. 11 PP. 4028 ~ 4049 (2014. 11) |
한글내용
(Korean Abstract) |
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영문내용
(English Abstract) |
Attribute-based encryption (ABE) is a promising cryptographic primitive for implementing fine-grained data sharing in cloud computing. However, before ABE can be widely deployed in practical cloud storage systems, a challenging issue with regard to attributes and user revocation has to be addressed. To our knowledge, most of the existing ABE schemes fail to support flexible and direct revocation owing to the burdensome update of attribute secret keys and all the ciphertexts. Aiming at tackling the challenge above, we formalize the notion of ciphertext-policy ABE supporting flexible and direct revocation (FDR-CP-ABE), and present a concrete construction. The proposed scheme supports direct attribute and user revocation. To achieve this goal, we introduce an auxiliary function to determine the ciphertexts involved in revocation events, and then only update these involved ciphertexts by adopting the technique of broadcast encryption. Furthermore, our construction is proven secure in the standard model. Theoretical analysis and experimental results indicate that FDR-CP-ABE outperforms the previous revocation-related methods.
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| 키워드(Keyword) |
Data sharing
attribute-based encryption
revocation
cloud computing
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| 파일첨부 |
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