![]() ![]() These must be true random numbers, not pseudo random The basis of the Bluetooth security is random numbers.Encryption must still work with power saving modes.So things like Bluetooth address and all keys must not be easily changed by the user once the module is made: without this feature someone can use your ‘phone and you’d never catch them! If a device can be cloned, then access is immediately open to any device it is paired with.Therefore fixed PINs must be supported (and in fact are mandatory for several profiles), and must be stored securely Not all devices have an input mechanism (computer mice, headsets etc).Security Although these appear obvious, there are subtleties within Bluetooth which must be understood if a system is to be secure:
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