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I was under the impression that RSA was first, but I guess I was wrong.

DH is a key exchange algorithm, not a general public-key encryption algorithm. So, as far as I understand, TLS would work, but the others I listed would not.




RSA was the first PKE scheme, but El Gamal, another PKE, is essentially a small modification of DH. Elgamal was discovered in 1985; before encryption really hit the mainstream.


I see. I'm not too familiar with crypto, so thanks for explaining. I guess that the argument is now: would ElGamal have been invented had RSA never existed?


I think so; as I said it's essentially a small modification to DH.




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