TIIS (한국인터넷정보학회)
Current Result Document : 7 / 8
| 한글제목(Korean Title) |
Security Weaknesses in Harn-Lin and Dutta-Barua Protocols for Group Key Establishment |
| 영문제목(English Title) |
Security Weaknesses in Harn-Lin and Dutta-Barua Protocols for Group Key Establishment |
| 저자(Author) |
Junghyun Nam
Moonseong Kim
Juryon Paik
Dongho Won
|
| 원문수록처(Citation) |
VOL 06 NO. 02 PP. 0751 ~ 0765 (2012. 02) |
한글내용
(Korean Abstract) |
|
영문내용
(English Abstract) |
Key establishment protocols are fundamental for establishing secure communication channels over public insecure networks. Security must be given the topmost priority in the design of a key establishment protocol. In this work, we provide a security analysis on two recent key establishment protocols: Harn and Lin’s group key transfer protocol and Dutta and Barua’s group key agreement protocol. Our analysis shows that both the Harn-Lin protocol and the Dutta-Barua protocol have a flaw in their design and can be easily attacked. The attack we mount on the Harn-Lin protocol is a replay attack whereby a malicious user can obtain the long-term secrets of any other users. The Dutta-Barua protocol is vulnerable to an unknown key-share attack. For each of the two protocols, we present how to eliminate their security vulnerabilities. We also improve Dutta and Barua’s proof of security to make it valid against unknown key share attacks. |
| 키워드(Keyword) |
Security
group key establishment
attack
secret sharing
|
| 파일첨부 |
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