| 对两个三方口令认证密钥交换协议的分析 |
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| 引用本文： | 胡学先,刘文芬.对两个三方口令认证密钥交换协议的分析[J].信息工程大学学报,2010,11(1):104-107,128. |
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| 作者姓名： | 胡学先 刘文芬 |
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| 作者单位： | 信息工程大学,信息工程学院,河南,郑州,450002 |
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| 摘 要： | Chung等和Kim等分别指出了简单三方口令认证密钥交换（S-3PAKE）协议的安全性缺点，并提出了相应的改进协议。文章对Chung等和Kim等改进的两个三方口令认证密钥交换协议的安全性进行分析，指出这两个协议仍旧是不安全的，均难以抵抗不可察觉在线字典攻击。
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| 关 键 词： | 口令认证 密钥交换 不可察觉在线字典攻击 |
Cryptanalysis of Two Three Party Password Based Authentication Key Exchange Protocols |
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| HU Xue xian,LIU Wen fen.Cryptanalysis of Two Three Party Password Based Authentication Key Exchange Protocols[J].Journal of Information Engineering University,2010,11(1):104-107,128. |
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| Authors: | HU Xue xian LIU Wen fen |
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| Affiliation: | (Institute of Information Engineering, Information Engineering University, Zhengzhou 450002, China) |
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| Abstract: | Recently, Chung et al. and Kim et al. independently showed that the simple three-party password-based authentication key exchange (S-3PAKE) protocol is insecure. They also proposed different enhancements to resolve the security problems. However, what is shown here is that none of these two enhanced three-party password-based authentication key exchange protocols is secure against undetectable on-line dictionary attacks by an insider adversary or any outsider adversary. |
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| Keywords: | password authenticated key exchange undetectable on-line dictionary attack |
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