https://www.apple.com/legal/privacy/law-enforcement-guidelines-us.pdf
III. Information Available from Apple
O. Extracting Data from Passcode Locked iOS Devices
https://www.apple.com/legal/privacy/law-enforcement-guidelines-outside-us-zhcn.pdf
III. Apple 可以提供的信息
K. 从密码锁定的 iOS 设备中提取数据