Revocable Hierarchical Identity-Based Encryption with Adaptive Security

@article{Lee2016RevocableHI,
  title={Revocable Hierarchical Identity-Based Encryption with Adaptive Security},
  author={Kwangsu Lee},
  journal={IACR Cryptology ePrint Archive},
  year={2016},
  volume={2016},
  pages={749}
}
  • Kwangsu Lee
  • Published 2016 in IACR Cryptology ePrint Archive
Hierarchical identity-based encryption (HIBE) can be extended to revocable HIBE (RHIBE) if a private key of a user can be revoked when the private key is revealed or expired. Previously, many selectively secure RHIBE schemes were proposed, but it is still unsolved problem to construct an adaptively secure RHIBE scheme. In this work, we propose two RHIBE schemes in composite-order bilinear groups and prove their adaptive security under simple static assumptions. To prove the adaptive security… CONTINUE READING

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