On the security of two identity-based conditional proxy re-encryption schemes
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- 作者：Kai Hea ; c ; Jian Wenga ; cryptjweng@gmail.com" class="auth_mail" title="E-mail the corresponding author ; Robert H. Dengb ; Joseph K. Liuc
- 关键词：Conditional proxy re-encryption ; Identity-based ; Single hop ; Multi-hop ; Chosen-ciphertext security
- 刊名：Theoretical Computer Science
- 出版年：2016
- 出版时间：1 November 2016
- 年：2016
- 卷：652
- 期：Complete
- 页码：18-27
- 全文大小：402 K
文摘
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If the original ciphertext in a PRE scheme is malleable, this scheme might not obtain chosen-ciphertext security.
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We presented some attacks to Liang et al.'s schemes, which fail to achieve chosen-ciphertext security.