Hi,
thanks for the reply but I don't think you understood my point.
First I never said pubic and private key are the same.
what I am asking is what cryptographic encryption does Ethereum use today vs what Ethereum used in 2017 or 2018.
I want to create a paper wallet with the old version of myethwallet..
another question is why does it says in the json when you open a wallet with the link I posted - AES128..
But I read online it's not aes128.so what is it and if it's different -why, and is it safe to use ?