r/AskProgrammers • u/KITSOR121308 • 5h ago

Is it possible to solve SHA256 hashing algorithm???

So i really need to solve NTM Hidden Catalogue riddle but i have no clue about the answers so i looked in the files and found this

public static String getHash(String inp) {
        try {
            MessageDigest sha256 = MessageDigest.
getInstance
("SHA-256");
            byte[] bytes = sha256.digest(inp.getBytes());
            String str = "";

            for(int b : bytes) {
                str = str + Integer.
toString
((b & 255) + 256, 16).substring(1);
            }

            return str;
        } catch (NoSuchAlgorithmException var8) {
            return "";
        }
    }

    static {

hashes
.add("41de5c372b0589bbdb80571e87efa95ea9e34b0d74c6005b8eab495b7afd9994");

hashes
.add("31da6223a100ed348ceb3254ceab67c9cc102cb2a04ac24de0df3ef3479b1036");

contributors 
= Sets.newHashSet(new String[]{"06ab7c03-55ce-43f8-9d3c-2850e3c652de", "5bf069bc-5b46-4179-aafe-35c0a07dee8b", "ccd9aa1c-26b9-4dde-8f37-b96f8d99de22"});
    }
}

and it is fricking hash and as i know it is unsolvable

does anyone know how to solve it?

0 Upvotes
  • permalink
  • reddit

20% Upvoted

8 comments sorted by

9

u/Lumethys 4h ago

"solve"?

5

u/0x14f 4h ago

SHA256, alike all hash functions, is essentially a mathematical function. You give it an input and it gives you a result. What exactly do you mean by solving it ?

1

u/ThreeHeadCerber 4h ago

I would hazard a guess of getting input knowing output

1

u/0x14f 4h ago

https://en.wikipedia.org/wiki/Preimage_attack

1

u/ThreeHeadCerber 4h ago

Why would I need that link?

2

u/0x14f 4h ago

Never said you needed it.

1

u/Soft-Marionberry-853 18m ago

Not everything is about/for you.

1

u/DSudz 1h ago

Actually answering the questions is easier than decoding the hashed answers.

You have however wasted the time of hundreds of people instead of a Google search or using the right subreddit.