Chaum, Fiat, and Naor proposed an offline check system [1], which has the advantage that the withdrawal and (anonymous) payment of a check are unlinkable. Here we present an improved protocol that saves 91% of the signatures, 41% of the other multiplications, 73% of the divisions, and 33% of the bit transmissions.
CITATION STYLE
Chaum, D., den Boer, B., van Heyst, E., Mjølsnes, S., & Steenbeek, A. (1990). Efficient offline electronic checks. In Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) (Vol. 434 LNCS, pp. 294–301). Springer Verlag. https://doi.org/10.1007/3-540-46885-4_31
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