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Strengthening password-based authentication protocols against online dictionary attacks.
| Content Provider | CiteSeerX |
|---|---|
| Author | Kim, Yongdae Kher, Vishal Kwon, Taekyoung Wang, Peng |
| Abstract | Abstract. Passwords are one of the most common cause of system break-ins, because the low entropy of passwords makes systems vulnerable to brute force guessing attacks (dictionary attacks). Existing Strong Password Authentication and Key Agreement (SPAKA) protocols protect passwords from passive eavesdropping-offline dictionary attacks, but not from active online dictionary attacks. This paper presents a simple scheme that strengthens password-based authentication protocols and helps prevent online dictionary attacks as well as many-to-many attacks common to 3-pass SPAKA protocols. The proposed scheme significantly increases the computational burden of an attacker trying to launch online dictionary attacks, while imposing negligible load on legitimate clients as well as on the authentication server. 1 |
| File Format | |
| Access Restriction | Open |
| Subject Keyword | Prevent Online Dictionary Attack Password-based Authentication Protocol Strong Password Authentication Dictionary Attack Simple Scheme System Break-in Key Agreement Protect Password Proposed Scheme Authentication Server Active Online Dictionary Attack Many-to-many Attack Computational Burden Passive Eavesdropping-offline Dictionary Attack Online Dictionary Attack Low Entropy Common Cause 3-pass Spaka Protocol Legitimate Client Negligible Load |
| Content Type | Text |
| Resource Type | Article |
