If radio waves are just non-visible light waves that are picked up by a vibrating rod, how does a radio wave get “encrypted” so that it can’t be picked up unless it’s unencrypted?
Edit: Everyone keeps commenting that the content of the message is what’s encrypted, not the radio waves itself, but that’s not what I mean. Someone answered that digital signals themselves can be modulated or disguised, which is what I meant when I asked
In: Technology
The wave itself isn’t encrypted, the data you’re encoding in the waves is encrypted. Someone can still intercept the communication easily but without knowledge of how it was encrypted (the algorithm) and any keys used to encrypt it being in their possession, it’s just random unusable garbage to them. Easiest example of this is encrypted wifi – it’s still just broadcast out in the clear but unless someone has the network key, they can’t do anything with the data they intercept.
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