Surely one cant think of the limitations (requirement for cooperation from the OS to test the PIN) as if they are cryptographic limitations...
Apple probably supplies such a service themself to law enforcement as a private apple approved ready-to-go app. Adam On Wed, Apr 04, 2012 at 03:45:09PM -0400, Jeffrey Walton wrote:
Hi All, Older iOS devices used a 4 digit PIN code, which was next to no protection. Newer iOS allow passcodes which consist of a full (fuller?) alphabet. Assuming a weak password policy (for example, 4 or 6 characters) are there any real benefits over PINs? What is the state of the art for mobile password cracking on iOS and Android? Jeff PS, I am aware of XRY software (http://www.forbes.com/sites/andygreenberg/2012/03/27/heres-how-law-enforcement-cracks-your-iphones-security-code-video/) and its limitation (http://9to5mac.com/2012/04/02/xrys-two-minute-iphone-passcode-exploit-debunked/) (thanks LW).
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