how does decryption differ from reversing a hash algorithm?

Question

I am struggling to understand how one is fast enough to underly the entire internet and how the other is so slow as to be functionally impossible.

As an expansion, since the public key is known, how then is the encrypted message irreversible?

In: 4

Answer 1

Encryption is fast enough for all of HTTPS to use because the people involved have the correct keys to unlock the encryption. Without the keys encryption would also be age of the universe slow as you try to brute force. Brute forcing hashes is actually way faster than brute forcing encryption, it’s jsut no one brute forces encryption.