On security analysis of an after-the-fact leakage resilient key exchange protocol
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- 作者：Zheng Yanga ; zheng.yang@rub.de" class="auth_mail" title="E-mail the corresponding author ; Shuangqing Lib
- 关键词：Cryptography ; Cryptanalysis ; Authenticated key exchange ; Two pass ; DDH
- 刊名：Information Processing Letters
- 出版年：2016
- 出版时间：January 2016
- 年：2016
- 卷：116
- 期：1
- 页码：33-40
- 全文大小：486 K
文摘
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We point out that the ASB scheme is not secure in the model which is claimed by the authors, via showing an attack in that model.
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We propose a solution to avoid such attack is given.
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We show that the even improved ASB scheme cannot be reduced to Decisional Diffie–Hellman (DDH) assumption.
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We re-prove the improved ASB scheme based on Gap Diffie–Hellman problem under random oracle model.