Security without identification: transaction systems to make big brother obsolete
Communications of the ACM
NetCash: a design for practical electronic currency on the Internet
CCS '93 Proceedings of the 1st ACM conference on Computer and communications security
A method for obtaining digital signatures and public-key cryptosystems
Communications of the ACM
Requirements for network payment: the NetCheque perspective
COMPCON '95 Proceedings of the 40th IEEE Computer Society International Conference
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Do you really know what money is? Most of the money that exists today doesn't exit as greenbacks in someone's wallet or gold in a Vault, but as 1's and 0's in some computer. What exactly is money then, and how does digital money differ from "real" money? This paper explores the nature of digital money, how it is created, used, stored, safeguarded, and transferred. Several digital money implementations are reviewed including: ecash, CyberCast, NetCash, NetCheque, and iKP.