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2014/10/15 ¤U¤È 10:09:58
iphone Programming Glossary: hashesiPhone/OS X LION: How to retrieve the decoded data from the CC_SHA256 encrypted data? http://stackoverflow.com/questions/10174536/iphone-os-x-lion-how-to-retrieve-the-decoded-data-from-the-cc-sha256-encrypted osx lion share improve this question As the others have noted SHA 1 and the SHA 2 variants are by design one way hashes. If you can reverse them the hashes are broken. The hashes are designed to check data integrity not to provide data encryption... As the others have noted SHA 1 and the SHA 2 variants are by design one way hashes. If you can reverse them the hashes are broken. The hashes are designed to check data integrity not to provide data encryption. If you want encryption decryption.. noted SHA 1 and the SHA 2 variants are by design one way hashes. If you can reverse them the hashes are broken. The hashes are designed to check data integrity not to provide data encryption. If you want encryption decryption as opposed to hashing..
http://stackoverflow.com/questions/11889556/authenticating-requests-from-mobile-iphone-app-to-asp-net-web-api-feedback-re the web API iPhone Android Windows phone etc . Application's Hashing Salt This is a string that is used to salt hashes for user agnostic requests. Two strings are stored in the iPhone app's local database values unique to each user API User.. without sending the username and password in each request. User's Hashing Salt This is a string that is used to salt hashes for requests made against established user accounts. The iPhone will make calls to the web API in the following manner API..
UIImagePickerController and extracting EXIF data from existing photos http://stackoverflow.com/questions/1238838/uiimagepickercontroller-and-extracting-exif-data-from-existing-photos UIImage making it impossible to know the file size of the image that was selected. I'm considering making a table of hashes and matching against the first x pixels of each image. This seems a bit over the top though and probably quite slow. Any..
iPhone Core Data Lightweight Migration Cocoa error 134130: Can't find model for source store http://stackoverflow.com/questions/3146515/iphone-core-data-lightweight-migration-cocoa-error-134130-cant-find-model-for my model versions with different names.. so I have in there VersionInfo.plist MyModel.mom MyModel2.mom The version hashes listed in the VersionInfo.plist should help you troubleshoot. Look for the version hash required by the existing persistent.. Look for the version hash required by the existing persistent store and see if you can locate it in the version hashes listed in VersionInfo.plist . Actually I can't see a way to write some code that will ask the persistent store what it's.. . Actually I can't see a way to write some code that will ask the persistent store what it's entity version hashes are. The NSPersistentStoreCoordinator or the NSMigrationManger seem to be doing that privately. i.e. they check the persistent..
How to make a secure login using UDID or device token? http://stackoverflow.com/questions/4671435/how-to-make-a-secure-login-using-udid-or-device-token The service would contain a copy of the same string recalculate the hash using the device ID provided and match the hashes. Not breakable by protocol analysis only by digging in the code for the string. Vulnerable to replay attacks though. For..
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