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Volume 24 Issue 11
Nov.  2002
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Chen Xiaofeng, Wang Yumin . Fair electronic cash based on untrustworthy trustee[J]. Journal of Electronics & Information Technology, 2002, 24(11): 1566-1572.
Citation: Chen Xiaofeng, Wang Yumin . Fair electronic cash based on untrustworthy trustee[J]. Journal of Electronics & Information Technology, 2002, 24(11): 1566-1572.

Fair electronic cash based on untrustworthy trustee

  • Received Date: 2001-03-30
  • Rev Recd Date: 2001-09-10
  • Publish Date: 2002-11-19
  • A fair electronic cash protocol based on trustee is presented by using RSA blind signature technique in this paper, the identity of multi-spender will be revealed by trustee with very high probability. Contrasting with the previous protocol, the users money cannot be withdrawn unless the trustee is in collusion with the bank, and the trustee can only trace the money that the bank asked him to trace. So the privacy of the user can be ensured to the maximum limit. Also this protocol can be used to trace the dubious cash and the owner, thereby it may be exploited to decrease the crimes like money laundering, blackmailing, etc. in the electronic cash system. This protocol requires off-line participation of trustee when users withdraw the cash, so it is efficient for implementation.
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