← Back to context

Comment by f6v

4 years ago

Is this anything new, though? The communications haven't been E2E protected ever since people started using phones.

Because E2E didn't exist when the phone was invented but there have been significant improvements since then.

  • Not POTS, but cell phones could have been E2E at least since cellular switched to digital.

    • The first digital phones ran on 56 bit (symmetric?) encryption. They certainty weren't powerful enough to run public key cryptography at safe key sizes, which is needed for secure e2e.

      1 reply →