iOS 9 : SecItemCopyMatching returns successful status code but key is nil

Question

I am trying to import private key into keychain usingSecItemAdd method returns OSStatus 0 but when I try to retrieve that key from key chain using SecItemCopyMatch, It returns nil data but OSStatus is 0 means success

Please refer from Apple developer forum link

getting the same result, do you have any successful solution for now? — Stas, Aug 25 '15 at 11:57
if you need it ASAP you can try to make swift injection in your code using this solution for swift - http://stackoverflow.com/questions/31549059/how-to-call-secitemcopymatching-in-xcode-7-beta-4 — Stas, Aug 26 '15 at 12:54

score 1 · Answer 1 · answered Sep 01 '15 at 09:20

1

The bug occurs due to malformed public key refer https://forums.developer.apple.com/thread/15129

If you use Basic Encoding Rules library here's the solution.

To fix your public key you need to insert nil byte before modulus data. https://github.com/StCredZero/SCZ-BasicEncodingRules-iOS/issues/6#issuecomment-136601437

P.S. For me fix was as simple as:

const char fixByte = 0;
NSMutableData * fixedModule = [NSMutableData dataWithBytes:&fixByte length:1];
[fixedModule appendData:modulusData];

answered Sep 01 '15 at 09:20

Stas

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No My problem is importing private key not public key... I haven't tried to import public key – jailani Sep 02 '15 at 08:08
1

You just save my life,thank you very much,how can this simple solution do the trick... – carl Sep 12 '15 at 09:46

score 1 · Answer 2 · edited Nov 11 '15 at 09:51

Thank you! you're my hero!

In my case.

Before

NSData *modBits = [[NSData alloc] initWithBase64EncodedString:mod options:NSDataBase64DecodingIgnoreUnknownCharacters];

After

const char fixByte = 0;
NSMutableData * modBits = [NSMutableData dataWithBytes:&fixByte length:1];

NSData *tmpmodBits = [[NSData alloc] initWithBase64EncodedString:mod options:NSDataBase64DecodingIgnoreUnknownCharacters];

[modBits appendData:tmpmodBits];

iOS 9 : SecItemCopyMatching returns successful status code but key is nil

2 Answers2