All you need to recover the Restrictions password is one of the following: As a result, brute-forcing the hash doesn’t take longer than a few seconds on average PCs.
Even though 1000 iterations are used to protect the hash, the length and complexity of the passcode were always fixed to exactly 4 digits. In these versions of iOS, Restriction passwords were stored on the device in the form of a hash derived from the salted user’s input with the pbkdf2-hmac-sha1 algorithm. Restrictions passwords were carried over unchanged all the way to iOS 11. Restrictions passwords (or, rather, restrictions passcodes due to their fixed size of strictly 4 digits) were introduced as means to protect changes to device settings, apps, and the Apple ID account. Restrictions Passwords (iOS 7 through 11) In this article, we’ll show you how to reveal your iOS 12 Screen Time passcode (or the Restrictions passcode if you’re using iOS 7 through 11) using Elcomsoft Phone Viewer. Compared to the device screen lock passcode, Screen Time passwords are much easier to forget since you rarely need it. On a flip side, there is no official way to recover the Screen Time password if you ever forget it other than resetting the device and setting it up from scratch. Using the Screen Time password can be a great idea if you want to ensure that no one can reset your iTunes backup password, disable Find My iPhone or change your Apple ID password even if they steal your device *and* know your device passcode. If you configure Screen Time restrictions to your usage scenarios, you’ll hardly ever need to type the Screen Time password on your device. The 4-digit Screen Time passcode is separate to the main screen lock passcode you are using to unlock your device.
You can add the Screen Time passcode when activating Screen Time on a child’s device or if you want to add an extra layer of security to your own device. The Screen Time passcode (known as the Restrictions passcode in previous versions of iOS) is a separate 4-digit passcode designed to secure changes to the device settings and the user’s Apple ID account and to enforce the Content & Privacy Restrictions.
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