GSM SECURITY AND ENCRYPTION

SEMINAR ON GSM SECURITY AND ENCRYPTION : The grounds of security in cellular telecommunications systems is to ensure conversations and signaling data capture, and to prevent fraud in mobile telephony. With the old analog cellular systems such as Advanced Mobile Phone (AMPS) and Total Access Communication System (TACS), it is relatively simple Homes for amateur radio scanner to intercept the phone conversations of the police. highly publicized case involved potentially embarrassing for a mobile phone conversation Members of the British royal family, who recorded and distributed to the media. Another Securities examination of cellular telecommunications systems require credentials electronic serial number (ESN), which are transmitted "in clear" in analog systems. With more complex equipment, you may receive the ESN and use it to commit cellular fraud telephone "cloning" of the second phone and call us. Estimates of cell fraud in the United States in 1993 to $ 500 million. The procedure in which the Mobile Station (MS) registers its location to the system is also vulnerable to interception and permits the proprietor can be controlled even if the call is in progress, as evidenced by Recent highly publicized police pursuit of a famous American athlete.
The security and authentication mechanisms incorporated in GSM make it the most secure mobile communication standard currently available, particularly in comparison to the analog systems described above. Part of the enhanced security of GSM is due to the fact that it is a digital system utilizing a speech coding algorithm, Gaussian Minimum Shift Keying (GMSK) digital modulation, slow frequency hopping, and Time Division Multiple Access (TDMA) time slot
architecture. To intercept and reconstruct this signal would require more highly specialized and expensive equipment than a police scanner to perform the reception, synchronization, and decoding of the signal. In addition, the authentication and encryption capabilities discussed in this paper ensure the security of GSM cellular telephone conversations and subscriber identification credentials against even the determined eavesdropper.

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