A Weakness in Authenticated Encryption Schemes Based on Tseng et al.'s Schemes

L. Hernández Encinas ； A. Martín del Rey ； J. Muñoz Masqué

《International Journal of Network Security》 7卷2期 (2008/09) Pp. 157-159

https://doi.org/10.6633/IJNS.200809.7(2).02

並列摘要

Tseng et al. have introduced in 2003 an authenticated encryption scheme by using self-certified public keys. Based on this scheme several authors have proposed new signature schemes avoiding some attacks against the original proposal. In this paper we show that there is a weakness on all these schemes affecting both the authentication of the signer's public key and the own security of the system. We propose a slight but necessary modification to these schemes in order to avoid that weakness.

並列關鍵字

Authenticated encryption ； cryptography ； digital signature ； self-certified public key