Abstract in English

References used

Guilin Wang, "Digital Cash", University of Birmingham, Handout of Network Security: 3 March 2008
Bruce Schneier, (1996) "Applied Cryptography, Second Edition: Protocols, Algorthms, and Source", John Wiley & Sons, Inc.01/01/96, ISBN: 0471128457, pp. 126-132
Haejung Park., "VARIOUS ASPECTS OF DIGITAL CASH", (2008), Haejung University of Maryland, College Park

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