Financial Cryptography and Data Security

Volume 5143 of the series Lecture Notes in Computer Science pp 202-214

Improvement of Efficiency in (Unconditional) Anonymous Transferable E-Cash

  • Sébastien CanardAffiliated withOrange Labs R&D,  
  • , Aline GougetAffiliated withGemalto
  • , Jacques TraoréAffiliated withOrange Labs R&D,  

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The practical advantage expected from transferable e-cash compare to non-transferable is the significant reduction of the interaction number between the bank and the users. However, this property is not fulfilled by anonymous transferable e-cash schemes of the state-of-the art. In this paper, we first present a transferable e-cash scheme with a reduced number of communications between the bank and the users that fulfils the computational anonymity property. Next, we present a transferable e-cash scheme with a reduced interaction number that fulfils the unconditional anonymity. This latter scheme is quite less efficient.


Electronic cash anonymity transferability