상세정보
학술지
Security Vulnerability in a Non-Interactive ID-Based Proxy Re-encryption Scheme
- 저자
- 구우권, 황정연, 이동훈
- 발행일
- 200911
- 출처
- Information Processing Letters, v.109 no.23-24, pp.1260-1262
- ISSN
- 0020-0190
- 출판사
- Elsevier
- 협약과제
- 09MS2300, 익명성 기반의 u지식정보보호기술 개발, 조현숙
- 초록
- 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. © 2009 Elsevier B.V. All rights reserved.
- 키워드
- CCA-security, Collusion attack, Cryptography, Identity-based proxy re-encryption
- KSP 제안 키워드
- CCA-security, Encryption Scheme, ID-based, Identity-based proxy re-encryption, Malicious user, Non-interactive, Security vulnerabilities, collusion attack, private Key