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A Practical-Time Attack on the A5/3 Cryptosystem Used in Third Generation GSM Telephony
Practical-Time Attack A5/3 Cryptosystem Third Generation GSM Telephony
2010/1/18
The privacy of most GSM phone conversations is currently
protected by the 20+ years old A5/1 and A5/2 stream ciphers, which
were repeatedly shown to be cryptographically weak. They will soon be
rep...
In this paper we present a real-world hardware-assisted attack on the wellknown
A5/1 stream cipher which is (still) used to secure GSM communication in most
countries all over the world. During the ...