Hacking at Random
Hacking happens

Henryk Plötz
Karsten Nohl
Day Saturday - 2009-08-15
Room Monty Hall
Start time 12:00
Duration 01:00
ID 135
Event type Lecture
Track Other
Language used for presentation English

Breaking Hitag2

Hitag2 is a low-frequency RFID system operating on a 120kHz using a proprietary 48-bit stream cipher which is only slightly harder to attack than the much-publicized Mifare Crypto-1 cipher. Hitag2 (with or without encryption) is mostly used for building access control or car immobilizers.

The low operating frequency and low data rate (2, 4 or 8 kbit/s) makes building sniffers, replayers and emulators especially easy. The maximum frequency of the data signal is in the audio range, so a normal sound card can be used as an A/D and D/A converter, using a very cheap diode detector radio for reception and simple load modulation circuit for transmission.