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IEICE Transactions on Communications

Strong ID-Based Key Distribution

I. R. JEONG, J. O. KWON, Dong Hoon Lee

Published Jan 1, 2008• 3 citations
Publisher

Abstract

Several ID-based key distribution schemes can be used to realize secure broadcasting systems. Unfortunately, none of the proposed schemes provide both security against long-term key reveal attacks and security against session state reveal attacks. In this letter, we suggest an ID-based key distribution scheme secure against long-term key reveal attacks and session state reveal attacks.

DOI
10.1093/ietcom/e91-b.1.306

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Information Security and Cryptology•Jan 1, 2005•0 citations
Several ID-based key distribution schemes can be used to realize secure broadcasting systems. Unfortunately, none of the proposed schemes provide both security against long-term key reveal attacks and security against session state reveal attacks. In this letter, we suggest an ID-based key distribution scheme secure against long-term key reveal attacks and session state reveal attacks.
The Chikazawa-Yamagishi scheme is an ID-based key distribution scheme which is based on the RSA cryptosystem. There are several variant schemes to improve the efficiency and the security of the Chikazawa-Yamagishi scheme. Unfortunately, all of the proposed schemes have some weaknesses. First, all the proposed schemes require time synchronization of the communicating parties. Second, none of the proposed schemes provide both forward secrecy and security against session state reveal attacks. In this paper, we suggest an ID-based key distribution scheme which does not require time synchronization and provides both forward secrecy and security against session state reveal attacks.
In 2000, Xu and Tilborg proposed an ID-based conference key distribution scheme which builds on earlier work of Harn and Yang in the 2-party setting. Recently, Jung et al. have discovered security flaws in the Xu-Tilborg scheme and proposed an improvement of this scheme to fix the security flaws. However, Jung et al.'s improvement introduces another security weakness. We demonstrate this by showing that the improved scheme is vulnerable to a parallel session attack mounted by two colluding adversaries. Further, we recommend changes to the scheme that address this vulnerability.
As the ID-based public key cryptosystems become a very active research area, a number of ID-based key agreement protocols have been proposed, but unfortunately many of them were analyzed that there were some security flaws in the protocols. In addition to key agreement protocols, in recent, Liu et al. and Kim et al. proposed the key agreement protocols that multiple session keys are established at once among participated entities. In this paper, we propose an ID-based tripartite key agreement protocol that establishes 8 keys by improving the efficiency of the Liu et al's. Moreover, the proposed protocol can be used in the situation where multiple different private key generators(PKG) are involved. Therefore, because the private key issued by different PKGs belonging to each entity's domain can be used, our proposed scheme is more efficiently applicable to the practical applications.