Efficient Conditional Proxy Re-encryption with Chosen-Ciphertext Security

Jiang Weng; Yanjiang Yang; Qiang Tang; Robert H. Deng; Feng Bao

doi:10.1007/978-3-642-04474-8_13

Efficient Conditional Proxy Re-encryption with Chosen-Ciphertext Security

Jiang Weng, Yanjiang Yang, Qiang Tang, Robert H. Deng, Feng Bao

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-review

85 Citations (Scopus)

340 Downloads (Pure)

Abstract

Recently, a variant of proxy re-encryption, named conditional proxy re-encryption (C-PRE), has been introduced. Compared with traditional proxy re-encryption, C-PRE enables the delegator to implement fine-grained delegation of decryption rights, and thus is more useful in many applications. In this paper, based on a careful observation on the existing definitions and security notions for C-PRE, we reformalize more rigorous definition and security notions for C-PRE. We further propose a more efficient C-PRE scheme, and prove its chosenciphertext security under the decisional bilinear Diffie-Hellman (DBDH) assumption in the random oracle model. In addition, we point out that a recent C-PRE scheme fails to achieve the chosen-ciphertext security.

Original language	Undefined
Title of host publication	Information Security - 12th International Conference, ISC, Pisa, Italy
Place of Publication	Heidelberg
Publisher	Springer
Pages	151-166
Number of pages	16
ISBN (Print)	978-3-642-04473-1
DOIs	https://doi.org/10.1007/978-3-642-04474-8_13 https://doi.org/10.1007/978-3-642-04474-8
Publication status	Published - Sept 2009
Event	Information Security - 12th International Conference, ISC, Pisa, Italy - Pisa, Italy Duration: 7 Sept 2009 → 9 Sept 2009

Publication series

Name	Lecture Notes in Computer Science
Publisher	Springer Verlag
Volume	5735

Conference

Conference	Information Security - 12th International Conference, ISC, Pisa, Italy
Period	7/09/09 → 9/09/09
Other	September 7-9, 2009

Keywords

METIS-264436
chosen-ciphertext security
Conditional proxy re-encryption
random oracle
SCS-Cybersecurity
EWI-16498
IR-68365

Access to Document

Efficient_Conditional_Proxy_Re-encryption_with_Chosen-Ciphertext_Security_

http://eprints.eemcs.utwente.nl/secure2/16498/01/Efficient_Conditional_Proxy_Re-encryption_with_Chosen-Ciphertext_Security_.pdf

Cite this

Weng, J., Yang, Y., Tang, Q., Deng, R. H., & Bao, F. (2009). Efficient Conditional Proxy Re-encryption with Chosen-Ciphertext Security. In Information Security - 12th International Conference, ISC, Pisa, Italy (pp. 151-166). Article 10.1007/978-3-642-04474-8 (Lecture Notes in Computer Science; Vol. 5735). Springer. https://doi.org/10.1007/978-3-642-04474-8_13, https://doi.org/10.1007/978-3-642-04474-8

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title = "Efficient Conditional Proxy Re-encryption with Chosen-Ciphertext Security",

abstract = "Recently, a variant of proxy re-encryption, named conditional proxy re-encryption (C-PRE), has been introduced. Compared with traditional proxy re-encryption, C-PRE enables the delegator to implement fine-grained delegation of decryption rights, and thus is more useful in many applications. In this paper, based on a careful observation on the existing definitions and security notions for C-PRE, we reformalize more rigorous definition and security notions for C-PRE. We further propose a more efficient C-PRE scheme, and prove its chosenciphertext security under the decisional bilinear Diffie-Hellman (DBDH) assumption in the random oracle model. In addition, we point out that a recent C-PRE scheme fails to achieve the chosen-ciphertext security.",

keywords = "METIS-264436, chosen-ciphertext security, Conditional proxy re-encryption, random oracle, SCS-Cybersecurity, EWI-16498, IR-68365",

author = "Jiang Weng and Yanjiang Yang and Qiang Tang and Deng, {Robert H.} and Feng Bao",

note = "10.1007/978-3-642-04474-8 ; Information Security - 12th International Conference, ISC, Pisa, Italy ; Conference date: 07-09-2009 Through 09-09-2009",

year = "2009",

month = sep,

doi = "10.1007/978-3-642-04474-8_13",

language = "Undefined",

isbn = "978-3-642-04473-1",

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Weng, J, Yang, Y, Tang, Q, Deng, RH & Bao, F 2009, Efficient Conditional Proxy Re-encryption with Chosen-Ciphertext Security. in Information Security - 12th International Conference, ISC, Pisa, Italy., 10.1007/978-3-642-04474-8, Lecture Notes in Computer Science, vol. 5735, Springer, Heidelberg, pp. 151-166, Information Security - 12th International Conference, ISC, Pisa, Italy, 7/09/09. https://doi.org/10.1007/978-3-642-04474-8_13, https://doi.org/10.1007/978-3-642-04474-8

Efficient Conditional Proxy Re-encryption with Chosen-Ciphertext Security. / Weng, Jiang; Yang, Yanjiang; Tang, Qiang et al.
Information Security - 12th International Conference, ISC, Pisa, Italy. Heidelberg: Springer, 2009. p. 151-166 10.1007/978-3-642-04474-8 (Lecture Notes in Computer Science; Vol. 5735).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-review

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