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Security vulnerability in a non-interactive ID-based proxy re-encryption scheme
- Authors
- Koo, Woo Kwon; Hwang, Jung Yeon; Lee, Dong Hoon
- Issue Date
- 15-Nov-2009
- Publisher
- ELSEVIER SCIENCE BV
- Keywords
- Cryptography; Identity-based proxy re-encryption; CCA-security; Collusion attack
- Citation
- INFORMATION PROCESSING LETTERS, v.109, no.23-24, pp.1260 - 1262
- Indexed
- SCIE
SCOPUS
- Journal Title
- INFORMATION PROCESSING LETTERS
- Volume
- 109
- Number
- 23-24
- Start Page
- 1260
- End Page
- 1262
- ISSN
- 0020-0190
- Abstract
- Recently, a non-interactive identity-based proxy re-encryption scheme was proposed for achieving CCA-security. In the paper, we show that the identity-based proxy re-encryption scheme is unfortunately vulnerable to a collusion attack. The collusion of a proxy and a malicious user enables two parties to derive other honest user's private key and thereby decrypt ciphertexts intended for the honest user. (C) 2009 Elsevier B.V. All rights reserved.
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Related Researcher
- Lee, Dong Hoon
- Department of Information Security