The Netherlands Postal and Telecommunications Services (PTT) have developed a system that controles the entrance to their buildings by use of magnetic stripe cards. In this note some cryptographic aspects of the system are explained.
CITATION STYLE
Haemers, W. (1986). Access Control at the Netherlands Postal and Telecommunications Services. In Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) (Vol. 218 LNCS, pp. 543–544). Springer Verlag. https://doi.org/10.1007/3-540-39799-X_44
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