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Analyzing a modern cryptographic RFID system

URL
http://mirror.fem-net.de/CCC/27C3/mp4-h264-HQ/27c3-4114-en-analyzing_modern_cryptographic_rfid_stystem.mp4
File name
27c3-4114-en-analyzing_modern_cryptographic_rfid_stystem.mp4
File size
865.1 MB
MD5
0c8870de4d352086673b342b2f44ebe6
SHA1
69faa665c699b2144dfaf93a75db0d36a3ec7fa5

Popular contactless systems for physical access control still rely on obscurity. As we have shown, time and time again, proprietary encryption systems are weak and easy to break. In a follow-up to last year's presentation we will now demonstrate attacks on systems with 'proper' cryptographic algorithms. Since we broke the last of the big players on the market at 26C3, most vendors are now migrating to new systems which rectify our main point of concern: proprietary algorithms. All new technologies use AES or 3DES for encryption and/or authentication and vendors tirelessly tout the security of their systems and the use of these algorithms between card, reader and host. We will discuss the design of the successor to a system we attacked last year, and demonstrate how a system can be insecure despite the use of secure cryptoprimitives.

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