get valid x-mgpk-hash headers for requests to a certain terrible manga platform nobody should be supporting

mgpk_hash.py

# original PoC from sometime in May, should still work
# valid for both APIs (JP/US)
import hashlib

# returned on register, login, etc
HASH_KEY = ""

# my PoC, cleaned up by someone much smarter than me (ty boss)
def get_mgpk_hash(params):
    sha_256 = hashlib.sha256()
    for k, v in sorted({"hash_key": HASH_KEY, **params}.items()):
        sha_256.update(bytes(hashlib.md5(bytes(v, "utf-8")).hexdigest(), "utf-8"))
    return sha_256.hexdigest()

params = { ... }
headers = { ... }
headers["x-mgpk-hash"] = get_mgpk_hash(params)