Reply To: 10 Dec 16 – Public Wi-Fi is dangerous

Home Forums The Poll Discussion 10 Dec 16 – Public Wi-Fi is dangerous Reply To: 10 Dec 16 – Public Wi-Fi is dangerous

#5170

RChandra
Participant

Your assertion is fundamentally incorrect. There is only one way to decrypt an encrypted message, and that is to know (or discover) the encryption key. Your bank knows the key, and securely transmits a session key with a protocol such as Diffie-Hellman Key Exchange for example. The only way anyone else can know what’s in that network stream is to reveal that session key, either by cryptanalysis or by guessing. Given properly designed cryptographic algorithms and sufficiently large keys, the chance that anyone else besides your browser and the bank’s server(s) can discover that key is extraordinarily close to zero.

It’s maths. Unless you can break maths, or find an as-yet-undiscovered flaw in the programming, you’re not eavesdropping on anyone’s communication. You will have what amounts to digital noise.