Online SHA256 Hash Generator

I am seeking any information attainable in reference to creating a content hash. I am very new to the coding world and would appreciate any feedback. I have searched the Wix API Documentation and am unable to find any information pertaining to this in the forum either.

I want to compute the SHA256 based HMAC for some key and a message in front-end using JavaScript. It's easily done in Python like so:

import hmach = hmac.new(b'key', b'message', 'sha256')print(h.hexdigest())

I searched and found something in NodeJS but can't do the same thing in front-end (I mean in browser of the user), which I guess I need to bundle the required library and do the stuff but could not figure out how.

I tried to write a program that generates the hashes of random 64 bit integers using the hashlib and secrets modules to generate hashes and run random numbers, respectively. But, the code is not fast enough. I know the gist of how to use C programming (not C++), and I tried to write a program, but the int and char stuff was just too hard for me. Here is an example of what I want to do:

1. Create a function that generates an integer X which, when converted to a string, turns the number into a string, and then executes the code.
2. Be able to call the function from main and print out a string with the code.
3. The function should compare the hash of the integer and try to find Y zeroes in the hash. (Y is the name for the input, it does not have to be Y, it could be basically what you want.)
4. Keep going until the hash is found.
5. Use a CSPRNG (not absolutely required but preferred because I don't want it to stumble on the same hash each time.)
6. The zeroes are in hexadecimal and definitely not decimal (if you somehow manage to do binary, it's OK but hex is preferred because hex is linked to binary (16=2^4) in a way that it is not to decimal.)
7. Use 64 or 128 bit integers on a 64 bit computer.

is it possible to find a file by only inputting a hash (preferably sha256) and getting a filepath?its also ok if i can immediately delete the file.im trying to make like some sort of virus scan, i know this is not good way is but its good enough for me.

i hope is can go something like this:

hash = 'hash'path = find_file(hash, C:)print(path)

i know this is not the best explanation but i hope someone can help me out.its a school project and the time is tight.

thanks!

I am trying to compare results of hashing in java and python. i have a snippet of code for java and python both giving same output for Encoding with UTF-8 but giving different(kind of ) results for Hash with sha256.

JAVA code:

String hash = "hello" byte[] test = hash.getBytes();MessageDigest sha = MessageDigest.getInstance("SHA-256");byte[] key = sha.digest(hash.getBytes());

output: test ==> [104, 101, 108, 108, 111] key ==> [44, -14, 77, -70, 95, -80, -93, 14, 38, -24, 59, 42, -59, -71, -30, -98, 27, 22, 30, 92, 31, -89, 66, 94, 115, 4, 51, 98, -109, -117, -104, 36]

Python code:

hash = "hello"test = list(bytearray(text.encode()))m = hashlib.sha256()m.update(hash.encode("UTF-8"))data = m.digest()key = list(data)

output: test ==> same as Java outputkey ==> [44, 242, 77, 186, 95, 176, 163, 14, 38, 232, 59, 42, 197, 185, 226, 158, 27, 22, 30, 92, 31, 167, 66, 94, 115, 4, 51, 98, 147, 139, 152, 36]