2014/10/15 下午 10:09:34

iphone Programming Glossary: getpublickeybits

Extracting a public key from key pair in key chain

http://stackoverflow.com/questions/11467215/extracting-a-public-key-from-key-pair-in-key-chain

a Crypto Exercise Sample where everything i need can be found class SecKeyWrapper functions generateKeyPair and getPublicKeyBits . But after trying to use these functions I always get the same output for my public key for different key pairs instead.. key pairs instead of different public key bits for different key pairs . Implementation of my generateKeyPair and getPublicKeyBits Function I first create a key pair by calling generateKeyPairWithKeySizeInBits which seems to work fine afterwards I extract.. by calling generateKeyPairWithKeySizeInBits which seems to work fine afterwards I extract the public key bits with getPublicKeyBits and NSLog them... void generateKeyPairWithKeySizeInBits int bits withPublicIdentifier NSString publicIdentifier andPrivateIdentifier..

How to find out the modulus and exponent of RSA Public Key on iPhone/Objective C

http://stackoverflow.com/questions/3840005/how-to-find-out-the-modulus-and-exponent-of-rsa-public-key-on-iphone-objective-c

Apple's CryptoExercise example. Download the SecKeyWrapper class from there. The interesting function in that class is getPublicKeyBits. Link to the example http developer.apple.com library ios #samplecode CryptoExercise Introduction Intro.html The bits you.. both the modulus and exp. Here's a code that will decode it for you pretty easy NSData getPublicKeyExp NSData pk self getPublicKeyBits if pk NULL return NULL int iterator 0 iterator TYPE bit stream mod exp self derEncodingGetSizeFrom pk at iterator Total.. pk at iterator return pk subdataWithRange NSMakeRange iterator exp_size NSData getPublicKeyMod NSData pk self getPublicKeyBits if pk NULL return NULL int iterator 0 iterator TYPE bit stream mod exp self derEncodingGetSizeFrom pk at iterator Total..

Saving SecKeyRef device generated public/private key pair on disk

http://stackoverflow.com/questions/5988735/saving-seckeyref-device-generated-public-private-key-pair-on-disk

this question Ah found the answer myself you can get the bytes for a public key using SecItemCopyMatching . NSData getPublicKeyBits OSStatus sanityCheck noErr NSData publicKeyBits nil NSMutableDictionary queryPublicKey NSMutableDictionary alloc init Set..