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The security of the multi-application public transport card

Mifare Classic widely used as a public transport card based on the weak cipher Crypto-1 broken three years ago with a number of serious attacks published by researchers from the Dutch University of Nijmegen and still another was developed at University College of London. The report entitled Cloning Reactivation published in the Polish Computerworld magazine presented the security of Warsaw City Card at that time. It also announced that starting from 2010 the security of the Warsaw system would undergo an upgrade with the usage of 3DES algorithm. While in London all new Oyster cards emitted since 2010 are more secureDesFire cards, the security of the Warsaw card stays nearly the same.