Wireless Devices and Cryptography: About Digital Pickpocketing, Open Sesame and Tracking Paranoia

Timo Kasper

it - Information Technology: Vol. 55, No. 3, pp. 123-128


Wireless embedded devices are employed for access control, identification, and payments. Cryptographic mechanisms serve as a protection against ill-intended usage or unauthorizedly accessing secured data. By security-analyzing commercial products, e. g., electronic passports, the remote keyless entry system KeeLoq, a Mifare Classic based contactless payment system, and Mifare DESfire cards, various security vulnerabilities are revealed. At hand of real-world attacks, the implications of a key extraction for the data protection and security of the respective contactless applications are illustrated.

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