i get that SHA256 isn’t considered “encryption”, it’s something to do with hashing. so, if i encrypt “hello” into a random string of characters, why is it said to be impossible to decrypt it back to “hello”? if you had a maths equation like P = (k * 10 / G) / (4x * 5gl), it’s possible to work backwards to find the value of k or g eventually. why not with SHA256? is it something to do with random numbers?
In: Mathematics
There’s no proof that it’s impossible to reverse SHA256. There’s a good chance it will go the way of SHA1 and other hashes so that, given a hash, it will be possible to generate a file that has that hash in a practical amount of time. Currently such attacks on SHA256 aren’t publicly known but it’s possible that agencies like the NSA have them secretly.
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