@class DHKey, NGMECDHPublicPreKey; @interface NGMFullPrekey : NSObject @property (readonly, nonatomic) DHKey *dhKey; @property (readonly, nonatomic) NGMECDHPublicPreKey *publicPrekey; + (id)fullPrekeyForTestingSignedBy:(id)a0; - (BOOL)delete; - (id)description; - (id)initWithPrekeySignedBy:(id)a0 error:(id *)a1; - (id)pbDevicePrekey; - (void).cxx_destruct; - (id)initWithPBPrekey:(id)a0 verifySignedBy:(id)a1 error:(id *)a2; - (id)ecdhKeyCTKObject; @end