Abstract
Recently, Yoon et al. exhibited the vulnerability of the smart-card-equipped password based authentication protocol proposed by Chien et al. to the Denning-Sacco attack. Furthermore, they also pointed out that the protocol does not provide the perfect forward secrecy. Accordingly, they presented an enhanced protocol to strengthen the security. This letter, however, demonstrates an interleaving attack on the Yoon et al.'s improved protocol and also discusses how to defend the protocol from the attack presented here.
| Original language | English |
|---|---|
| Pages (from-to) | 1859-1862 |
| Number of pages | 4 |
| Journal | IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences |
| Volume | E89-A |
| Issue number | 6 |
| DOIs | |
| State | Published - Jun 2006 |
Keywords
- Authentication
- Diffie-Hellman problem
- Interleaving attack
- Password based key exchange protocol
- Smart-card
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