BT-security

BT-security - Assuming the PINs are chosen uniformly at...

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09/23/05 1/27 Usable Security Bluetooth Pairing   Nitesh Saxena Nitesh Saxena Polytechnic University
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09/23/05 2/27 PIN-based Bluetooth Pairing
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09/23/05 3/27 Authentication 1 2
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09/23/05 4/27 (In)Security of PIN-based Pairing Long believed to be insecure for short PINs Why? First to demonstrate this insecurity; Shaked and Wool [Mobisys’05]
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09/23/05 5/27 Attack Implementation Coded in C on linux platform Given a piece of code for SAFER algorithm,
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09/23/05 6/27 Timing Measurements of Attack Theoretically: O(10^L), with decimal digits
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Unformatted text preview: Assuming the PINs are chosen uniformly at random Empirically, on a PIII 700MHz machine: No. of digits in PIN (L) CPU time (sec) 4 1.294 5 12.915 6 129.657 7 1315.332 09/23/05 7/27 Timing of Attack ASCII PINs: O(90^L), assuming there are 90 ascii characters that can be typed on a mobile phone Assuming random pins It might actually be safe enough to use 6 digit ascii pins. Assuming random pins Security vs. Usability Tradeoff...
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This note was uploaded on 03/03/2010 for the course CS 6813 taught by Professor Saxena during the Fall '09 term at NYU Poly.

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BT-security - Assuming the PINs are chosen uniformly at...

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