摘要
Recently, Harn proposed one digital signature scheme for Diffie-Hellman key exchange system. In this paper, we point out at first that there is a weakness in Harn's system and then we propose two modified schemes to avoid this weakness.
Recently, Harn proposed one digital signature scheme for Diffie-Hellman key exchange system. In this paper, we point out at first that there is a weakness in Harn's system and then we propose two modified schemes to avoid this weakness.
基金
This Project is supported by NSFC for Outstanding Young Scientists (No. 69425001) and National Project "973" (No.1999035805).
