qqmusicunlock/src/decrypt/qmc_cipher.test.ts

import {QmcStaticCipher} from "@/decrypt/qmc_cipher";

test("static cipher [0x7ff8,0x8000) ", () => {
  const expected = new Uint8Array([
    0xD8, 0x52, 0xF7, 0x67, 0x90, 0xCA, 0xD6, 0x4A,
    0x4A, 0xD6, 0xCA, 0x90, 0x67, 0xF7, 0x52, 0xD8,
  ])

  const c = new QmcStaticCipher()
  const buf = new Uint8Array(16)
  c.decrypt(buf, 0x7ff8)

  expect(buf).toStrictEqual(expected)
})

test("static cipher [0,0x10) ", () => {
  const expected = new Uint8Array([
    0xC3, 0x4A, 0xD6, 0xCA, 0x90, 0x67, 0xF7, 0x52,
    0xD8, 0xA1, 0x66, 0x62, 0x9F, 0x5B, 0x09, 0x00,
  ])

  const c = new QmcStaticCipher()
  const buf = new Uint8Array(16)
  c.decrypt(buf, 0)

  expect(buf).toStrictEqual(expected)
})