Common Contracts
1 similar N/A contracts
A New Simple Authenticated Key Agreement and Protected Password Change ProtocolN/A • October 24th, 2005
Abstract. In 2005, Chang et al. proposed a simple authenticated key agreement and protected password change protocol. However, Chang et al.’s schemes are still susceptible to stolen-verifier attack and Denial-of- Service attacks. Accordingly, the current paper demonstrates the vulner- ability of Chang et al.’s schemes to two simple attacks and then presents an improved scheme to resolve such problems. In contrast to Chang et al.’s protected password change protocol, the proposed protected pass- word change protocol can securely update user passwords without a com- plicated process, while also providing greater security.
