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2014/10/15 ¤U¤È 10:12:29
iphone Programming Glossary: passcodeFile system encryption for IOS? http://stackoverflow.com/questions/10004299/file-system-encryption-for-ios Using On Disk Encryption in the iOS App Programming Guide. All of these options however require the user to have a passcode set on the device. Older devices may not support file system encryption. One of the options not mentioned in this documentation..
AES Encryption for an NSString on the iPhone http://stackoverflow.com/questions/1400246/aes-encryption-for-an-nsstring-on-the-iphone I want to write a method which takes two NSString instances one being the message to encrypt and the other being a 'passcode' to encrypt it with I suspect I'd have to generate the encryption key with the passcode in a way that can be reversed if.. encrypt and the other being a 'passcode' to encrypt it with I suspect I'd have to generate the encryption key with the passcode in a way that can be reversed if the passcode is supplied with the encrypted data. The method should then return an NSString.. it with I suspect I'd have to generate the encryption key with the passcode in a way that can be reversed if the passcode is supplied with the encrypted data. The method should then return an NSString created from the encrypted data. I've tried..
Can I tell if the iPhone has a passcode? http://stackoverflow.com/questions/2547295/can-i-tell-if-the-iphone-has-a-passcode I tell if the iPhone has a passcode I'm developing an application that asks for a PIN when you start it. That's not great but I can live with it. The problem.. is I'm being asked to ask for the PIN each time the phone wakes from sleep too. Combined with the OS asking for its passcode it's too much. Is there any legitimate way to detect if the phone has a passcode required for waking so I can skip requiring.. Combined with the OS asking for its passcode it's too much. Is there any legitimate way to detect if the phone has a passcode required for waking so I can skip requiring a PIN in this case I don't want to know the PIN and I don't actually care if..
http://stackoverflow.com/questions/3558252/ios-keychain-security what I can tell there are two levels of encryption that the iOS keychain uses. The first level uses the lock screen passcode as the encryption key. The second level uses a key generated by and stored on the device. Fraunhofer's researchers have.. earlier all keys can be decrypted using Fraunhofer's method regardless of accessibility attribute used Devices with no passcodes at all will still be vulnerable Devices with weak passcodes less than six digits will still be somewhat vulnerable 0ms.. regardless of accessibility attribute used Devices with no passcodes at all will still be vulnerable Devices with weak passcodes less than six digits will still be somewhat vulnerable 0ms per password try 0 tries per second .7 years for a 50 change..
How can I find out if the iPhone user currently has a passcode set and encryption enabled? http://stackoverflow.com/questions/3806455/how-can-i-find-out-if-the-iphone-user-currently-has-a-passcode-set-and-encryptio can I find out if the iPhone user currently has a passcode set and encryption enabled I'm writing an iPhone application that requires its data to be encrypted. I've learned how to.. version to make sure they are running iOS 4.0 or better. What I've realized though that if the user has not chosen a passcode and has not specifically enabled data protection on the Settings General Passcade Lock screen then the data isn't actually.. then the data isn't actually protected at all. I'd like to pop up a warning and tell the user that they must enable a passcode and turn on data protection which requires a backup and restore on pre 4 iPhones and then exit the application if they do..
http://stackoverflow.com/questions/4595955/protecting-the-app-sandbox
Preventing snapshot view of your app when coming back from multi-tasking http://stackoverflow.com/questions/6235112/preventing-snapshot-view-of-your-app-when-coming-back-from-multi-tasking snapshot view of your app when coming back from multi tasking The problem is this My app lets you passcode protect itself. I use an interface just like passcode protecting the phone. This has always worked fine until multi tasking.. back from multi tasking The problem is this My app lets you passcode protect itself. I use an interface just like passcode protecting the phone. This has always worked fine until multi tasking came along. The passcode protection still works but.. an interface just like passcode protecting the phone. This has always worked fine until multi tasking came along. The passcode protection still works but there is one issue. Apple does something special to make it look like our apps are loading quicker..
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