1. Bogdanov, A.: Attacks in the KeeLoq Block Cipher and Authentication Systems. In: The 3rd Conference on RFID Security (RFIDSec 2007), Malaga, Spain (2007)
2. Wikipedia: Keeloq algorithm (2006),
http://en.wikipedia.org/wiki/KeeLoq
3. HomeLink: Homelink and KeeLoq-based Rolling Code Garage Door Openers (2006),
http://www.homelink.com/home/keeloq.tml
4. Microchip: Hopping Code Decoder using a PIC16C56, AN642 (1998),
http://en.wikipedia.org/wiki/KeeLoq
and
http://www.keeloq.boom.ru/decryption.pdf
5. Microchip: An Introduction to KeeLoq Code Hopping (1996),
http://ww1.microchip.com/downloads/en/AppNotes/91002a.pdf