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How Could A Diffie Hellman Key Exchange Work on SMS Android Apps on Two Different Mobile Devices? It is understandable for a client browser communicating with a server, the internet data path is continous unlike SMS that is relayed via GSM network.

  • your presumption, "the internet data path is continuous", is wrong, by the way. The internet works based on packets, and the fact that you can have a "stream" of data is just higher-level construction and interpretation of these packets – Marcus Müller Jan 18 '17 at 15:41
  • Yes, but I think the real question is why? What would be the reason for using a provenly compromised key exchange technique to develop a more complicated system for data transfer rather than just using an established and mission tested zero knowledge system. Examples include things such as openpgp. New asymmetric algorithms like ECC also show promise. – Nick Jan 19 '17 at 5:56
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Yes, that's possible . Why not?

Diffie-Hellman only demands you exchange data. There's no restriction on how that data gets from A to B. You might use the internet, SMS, pidgeons, shout it across the marketplace, morse it, use skybeamers to write it into the night sky…

How you encode the couple of bits into SMS, letters attached to pidgeons, buzzwords shouted across the market place, letters morsed, or skybeamer figures is up to you. In the end, Diffie-Hellmann just requires you to send a few numbers around.

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