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A hash algorithm is a function which takes a variable size input and produces a fixed size output. The algorithm tries to make it difficult to predict the output for a given input, find two inputs with the same output, or reconstruct the input from the output.

4
votes
No. The output of a cryptographic hash function (like SHA256) is indistinguishable from random data. The only feature that'd be useful to a neural network would be the length of the hash -- and you don't need a neural network to tell you that a 256-bit value could be SHA256. …
answered Jan 9 by duskwuff
0
votes
Is it possible to obtain this functionality? No. In fact, having this functionality would make your hash trivially reversible. Imagine that there is some row that an attacker wants to reverse … the hash for. They can: Perform a search for every letter alone (e.g. "A" … "Z"), and check which one of those searches returns the row they are looking for Take that letter, then append every …
answered Jul 4 by duskwuff
1
vote
There's a number of reasons for this. Most of them have already been mentioned, but here's one more: Phishing sites are often hosted on compromised web sites or servers. Making their domains or URLs …
answered Jul 25 '18 by duskwuff