diff --git a/CocoaSecurity.xcodeproj/project.xcworkspace/xcuserdata/Kelp.xcuserdatad/UserInterfaceState.xcuserstate b/CocoaSecurity.xcodeproj/project.xcworkspace/xcuserdata/Kelp.xcuserdatad/UserInterfaceState.xcuserstate
index 7b2b8b6..e5c3b76 100644
Binary files a/CocoaSecurity.xcodeproj/project.xcworkspace/xcuserdata/Kelp.xcuserdatad/UserInterfaceState.xcuserstate and b/CocoaSecurity.xcodeproj/project.xcworkspace/xcuserdata/Kelp.xcuserdatad/UserInterfaceState.xcuserstate differ
diff --git a/CocoaSecurity/CocoaSecurity.h b/CocoaSecurity/CocoaSecurity.h
index 1ffe07e..b7ba4d1 100644
--- a/CocoaSecurity/CocoaSecurity.h
+++ b/CocoaSecurity/CocoaSecurity.h
@@ -19,12 +19,22 @@
 #import <CommonCrypto/CommonCryptor.h>
 
 #pragma mark - CocoaSecurityResult
+
 @interface CocoaSecurityResult : NSObject
+
+#if __has_feature(objc_arc)
+@property (strong) NSData *data;
+@property (strong, readonly) NSString *utf8String;
+@property (strong, readonly) NSString *hex;
+@property (strong, readonly) NSString *hexLower;
+@property (strong, readonly) NSString *base64;
+#else
 @property (retain) NSData *data;
 @property (retain, readonly) NSString *utf8String;
 @property (retain, readonly) NSString *hex;
 @property (retain, readonly) NSString *hexLower;
 @property (retain, readonly) NSString *base64;
+#endif
 
 - (id)initWithBytes: (unsigned char[])initData length: (uint) length;
 @end