WmpfDeviceSignUpUtil.workingDir = System.getProperty("java.io.tmpdir")
  
  val (privateKey, publicKey) = WmpfDeviceSignUpUtil.getPrivateKeyPublicKeyPair()

 
运行后提示：java.io.FileNotFoundException: /data/data/com.taisau.facepass/cache/wmpfPrivateKeyPath.key (No such file or directory)