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
—–BEGIN PGP MESSAGE—–
hIwD6XcolaauiZgBA/9kjkI8OcW2bBiFJpbOUoSKF9W2F/M35fDq3cLGLB5d+D/v
DV30HpRZU4VulcNVxWuEgPBxGflscDyKTcu3WPJPCql9y572uKa4YLfQgxn1A28D
PSRMQPt2zsldXXRHBYr23qzajLyMbSttnYe0V+XT1ymwz45RZhloOP5BhdO5ytJI
AW4EQUp/BfEBCbyLBz46y6kd4N2WLNsVEadgEUonaF70ULUDhq+x91oHwT8mDy9v
cE0pYMb7YBIgJ40at729eqouQc2hCrtF
=5+f0
—–END PGP MESSAGE—–
This *message* is encrypted, but the *text* is not. Its made of completely normal letters and punctuation, but the pattern of letters corresponding to a meaningful message has been scrambled.
It works the exact same way for radio, or any other transmission method.
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