Constant-Size CCA-Secure Multi-hop Unidirectional Proxy Re-encryption from Indistinguishability Obfuscation

@inproceedings{Lai2018ConstantSizeCM,
  title={Constant-Size CCA-Secure Multi-hop Unidirectional Proxy Re-encryption from Indistinguishability Obfuscation},
  author={Junzuo Lai and Zhengan Huang and Man Ho Au and Xianping Mao},
  booktitle={ACISP},
  year={2018}
}
In this paper, we utilize the recent advances in indistinguishability obfuscation, overcome several obstacles and propose a multi-hop unidirectional proxy re-encryption scheme. The proposed scheme is proved to be CCA-secure in the standard model (i.e., without using the random oracle heuristic), and its ciphertext remains constant-size regardless of how many times it has been transformed. 

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Information Security and Cryptology

  • Lecture Notes in Computer Science
  • 2018
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