A5/1 FAQ
The A5/1 release at this month's Cypherpunks meeting brought up a few questions from the attendees. Since I suspect others might have the same questions, I'll answer them below. o A5 is an LFSR-based stream cipher. It takes a 64 bit key and a 22 bit frame number. Ross Anderson's variant was
Re: A5/1 FAQ
http://cryptography.org/cgi-bin/crypto.cgi/libraries/A51ref.zip