Analysis and improvement of authenticatable ring signcryption scheme
Analysis and improvement of authenticatable ring signcryption scheme
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DOI：
10.1007/s12204-008-0679-2
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发表时间：
2008-12
影响因子：
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通讯作者：
Fagen Li;Masaaki Shirase;T. Takagi
中科院分区：
文献类型：
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作者：
Fagen Li;Masaaki Shirase;T. Takagi
We show that the Zhang-Yang-Zhu-Zhang identity-based authenticatable ring signcryption scheme is not secure against chosen plaintext attacks. Furthermore, we propose an improved scheme that remedies the weakness of the Zhang-Yang-Zhu-Zhang scheme. The improved scheme has shorter ciphertext size than the Zhang-Yang-Zhu-Zhang scheme. We then prove that the improved scheme satisfies confidentiality, unforgeability, anonymity and authenticatability.
