Security vulnerability in a non-interactive ID-based proxy re-encryption scheme

Woo Kwon Koo; Jung Yeon Hwang; Dong Hoon Lee

doi:10.1016/j.ipl.2009.09.010

Security vulnerability in a non-interactive ID-based proxy re-encryption scheme

Woo Kwon Koo, Jung Yeon Hwang, Dong Hoon Lee

School of Cybersecurity

Research output: Contribution to journal › Article › peer-review

11 Citations (Scopus)

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.

Original language	English
Pages (from-to)	1260-1262
Number of pages	3
Journal	Information Processing Letters
Volume	109
Issue number	23-24
DOIs	https://doi.org/10.1016/j.ipl.2009.09.010
Publication status	Published - 2009 Nov 15

Keywords

CCA-security
Collusion attack
Cryptography
Identity-based proxy re-encryption

ASJC Scopus subject areas

Theoretical Computer Science
Signal Processing
Information Systems
Computer Science Applications

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10.1016/j.ipl.2009.09.010

Cite this

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title = "Security vulnerability in a non-interactive ID-based proxy re-encryption scheme",

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.",

keywords = "CCA-security, Collusion attack, Cryptography, Identity-based proxy re-encryption",

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N2 - 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.

AB - 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.

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KW - Collusion attack

KW - Cryptography

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Security vulnerability in a non-interactive ID-based proxy re-encryption scheme

Abstract

Keywords

ASJC Scopus subject areas

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