Adi Shamir has provided "Real-Time Cryptanalysis of GSM's A5/1 on a PC, (Preliminary Draft)" by Alex Biryukov and Adi Shamir, December 9, 1999: http://cryptome.org/a5.ps (Postscript, 292K)
Adi Shamir has provided "Real-Time Cryptanalysis of GSM's A5/1 on a PC, (Preliminary Draft)" by Alex Biryukov and Adi Shamir, December 9, 1999: http://cryptome.org/a5.ps (Postscript, 292K)