F. Cramer 1 and T. P . These papers argue that a particular combination of a tamper resistant unit and a small computer controlled by the user is very suitable as a personal device in consumer transaction systems. Using such devices, protocols are constructed that, simultaneously, achieve high levels of security for organizations and anonymity for individual users. Wallet Databases with Observers , Proceedings of Crypto '92, Abstracts, Santa Barbara, August 1992, pp. Proof of equality of two discrete coordinates Similar to the extension of Schnorr s protocol to Okamoto s protocol, we extend the Chaum Pedersen protocol to the case involving several generators.
Wallet databases with observers .
One can envision a system where the players gain access to the list through a server. One can envision a system where the players gain access to the list through a server. In this article, we present two new blind signature schemes. Wallet databases with observers , Advances in Cryptology, Crypto '92, LNCS 740, Springer Verlag, pp. While the market needs are not clearly established, governments and organizations like banks usually consider anonymity as an obstruction to the system security surveillance, and they prefer to protect users privacy by legal and administrative steps.