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

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i trying import private key keychain usingsecitemadd method returns osstatus 0 when try retrieve key key chain using secitemcopymatch, returns nil data osstatus 0 means success

please refer apple developer forum link

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

if use basic encoding rules library here's solution.

to fix public key need insert nil byte before modulus data. https://github.com/stcredzero/scz-basicencodingrules-ios/issues/6#issuecomment-136601437

p.s. me fix simple as:

const char fixbyte = 0; nsmutabledata * fixedmodule = [nsmutabledata datawithbytes:&fixbyte length:1]; [fixedmodule appenddata:modulusdata];

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