qqmusicunlock/src/decrypt/qmc_key.test.ts

import {QmcDecryptKey, simpleMakeKey,} from "@/decrypt/qmc_key";
import fs from "fs";

test("key dec: make simple key", () => {
  expect(
    simpleMakeKey(106, 8)
  ).toStrictEqual(
    [0x69, 0x56, 0x46, 0x38, 0x2b, 0x20, 0x15, 0x0b]
  )
})

function loadTestDataKeyDecrypt(name: string): {
  cipherText: Uint8Array,
  clearText: Uint8Array
} {
  return {
    cipherText: fs.readFileSync(`testdata/${name}_key_raw.bin`),
    clearText: fs.readFileSync(`testdata/${name}_key.bin`)
  }
}

test("key dec: real file", async () => {
  const cases = ["mflac_map", "mgg_map", "mflac0_rc4"]
  for (const name of cases) {
    const {clearText, cipherText} = loadTestDataKeyDecrypt(name)
    const buf = QmcDecryptKey(cipherText)

    expect(buf).toStrictEqual(clearText)
  }
})