[Open Assets] SHA-256 v1.1

This Lua script implements the SHA-256 cryptographic hash function.
SHA-256 can be used to implement checksums, for example.

Example script:

SHA-256 example:

local hash = sha2("")

print(hash) --> e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

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Changelog:

• Fixed messages 32 bytes or longer producing incorrect hashes.
  • This was due to the SRB2 Lua API's unintuitive bitshifting behavior.
    In SRB2's Lua, x >> y actually acts more like x >> (y % 32).
    This is what I like to call a "bruh moment," and it should be fixed.

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