所以我有一个旧的敏感访问key，当前具有kSecAttrAccessibleWhenUnlocked的可访问性，我想将其更新为kSecAttrAccessibleAfterFirstUnlock。我正在使用Lockbox并调用它:[LockboxsetString:accessKeyforKey:self.accessKeyNameaccessibility:kSecAttrAccessibleAfterFirstUnlock];这又称为:-(BOOL)setObject:(NSString*)objforKey:(NSString*)keyaccessibility:(CFTypeR