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
This is how I explain hashing in a very simple way.
Your date of birth is 7-7-2000.. so I use algorithm, adding all numbers.. 7+7+2=16 , 1+6= 7.. so hash of your DOB is 7.
Now if u want to test whether ur gf knows your DOB or not, in presence of other friends.
She should confirm loudly but without letting others to know it.
You- tell me hash if you know my DOB
She- 7
You – yeah u know it.
But by her answer.. noone can guess your DOB
So hashing is an algorithm, which destroys whole info.. but keeps one special number.
My hashing is simple.. but original algorithm does a lot of calculation to produce a fixed number.
Encryption is doing code.. suppose your secret key is 11111112 then 07072000 is.. 07072000 + 11111112=18183112 (coded).
So now u know the secret key..
Now in front of others I can tell u my DOB is 15163022 , you can subtract the key and u will know the answer.
In short
Hash is just confirmation. You can’t get original specific DOB by a number 8
But encrypted 12123012 can give you specific DOB after decryption.
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