International Association for Cryptologic Research

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A Note on Secure Key Issuing in ID-based Cryptography

Authors:
XU Chunxiang
ZHOU Junhui
QIN Zhiguang
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URL: http://eprint.iacr.org/2005/180
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Abstract: Most recently, Lee B. et al proposed a key issuing protocol for ID-based cryptography to solve the key escrow problem. However in this letter, we show that a malicious key generation center (KGC) can successfully attack the protocol to obtain users?? private keys. This means that in the protocol, the key escrow problem isn??t really removed.
BibTeX
@misc{eprint-2005-12516,
  title={A Note on Secure Key Issuing in ID-based Cryptography},
  booktitle={IACR Eprint archive},
  keywords={public-key cryptography / ID-based cryptography, Key escrow problem, Secure key issuing, Key generation center, Key privacy authority},
  url={http://eprint.iacr.org/2005/180},
  note={ chxxu@uestc.edu.cn 12948 received 14 Jun 2005},
  author={XU Chunxiang and ZHOU Junhui and QIN Zhiguang},
  year=2005
}