Analysis and improvement of authenticatable ring signcryption scheme

Fa Gen Li, Shirase Masaaki, Takagi Tsuyoshi

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)


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. Copyright.

Original languageEnglish
Pages (from-to)679-683
Number of pages5
JournalJournal of Shanghai Jiaotong University (Science)
Volume13 E
Issue number6
Publication statusPublished - Dec 2008
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • General


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