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Naziv
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Cryptanalysis of Cellular Encryption
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Sažetak
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The use of cryptanalytic techniques to derive cryptographic keys or otherwise effectively defeat cellular encryption to reveal traffic content. Some cellular encryption algorithms such as A5/1 and A5/2 (specified for GSM use) are known to be vulnerable to such attacks and commercial tools are available to execute these attacks and decrypt mobile phone conversations in real-time. Newer encryption algorithms in use by UMTS and LTE are stronger and currently believed to be less vulnerable to these types of attacks. Note, however, that an attacker with a Cellular Rogue Base Station can force the use of weak cellular encryption even by newer mobile devices.
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Preduvjeti
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None
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Rješenja
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['Use of hardened baseband firmware on retransmission device to detect and prevent the use of weak cellular encryption.', 'Monitor cellular RF interface to detect the usage of weaker-than-expected cellular encryption.']
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