@class NSData, SecKeyP256Public, NSString; @interface SecKeyP256Private : NSObject <P256PrivateKeyProtocol> @property (readonly, nonatomic) id privateKey; @property (readonly, nonatomic) NSData *privateKeyBlob; @property (retain, nonatomic) SecKeyP256Public *publicKey; @property (readonly) unsigned long long hash; @property (readonly) Class superclass; @property (readonly, copy) NSString *description; @property (readonly, copy) NSString *debugDescription; + (id)generate; + (id)defaultProtectionClassForPlatform; + (id)generateWithAccessControl:(id)a0; - (id)signData:(id)a0 error:(id *)a1; - (id)getPrivateKeyRefWithError:(id *)a0; - (id)initWithData:(id)a0 error:(id *)a1; - (id)keyAgreement:(id)a0 error:(id *)a1 isRetry:(BOOL)a2; - (id)keyAgreement:(id)a0 error:(id *)a1; - (void).cxx_destruct; - (id)keychainData; @end