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Difference between revisions of "UID key"
ChronicDev (talk | contribs) |
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| − | AES hardware key unique to each iPhone. |
+ | The [[UID-key]] (device's unique ID key) is an AES 256-bit hardware key, unique to each iPhone. It's fused into the application processor during manufacturing. It was previously used to encrypt things in the [[NOR]]. In later iOS versions, it is used to encrypt the entire file system, so that the Flash chips cannot moved to another device and read out there again. |
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| + | Apple says about this key:<br/> |
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| + | ''"The UID is unique to each device and is not recorded by Apple or any of its suppliers."''<br/> |
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| + | and also<br/> |
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| + | ''"The UID is not related to any other identifier on the device."'' |
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| + | ===References=== |
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| + | *[http://images.apple.com/iphone/business/docs/iOS_Security_Oct12.pdf iOS Security document by Apple] |
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Revision as of 23:21, 28 June 2013
The UID-key (device's unique ID key) is an AES 256-bit hardware key, unique to each iPhone. It's fused into the application processor during manufacturing. It was previously used to encrypt things in the NOR. In later iOS versions, it is used to encrypt the entire file system, so that the Flash chips cannot moved to another device and read out there again.
Apple says about this key:
"The UID is unique to each device and is not recorded by Apple or any of its suppliers."
and also
"The UID is not related to any other identifier on the device."
