I am developing an iOS application based on Objective-C, and I have encountered a requirement where I need to determine if the password for the currently connected Wi-Fi is empty. If it is empty, the user is allowed to proceed to the next step. If it is not empty, they must enter a password. This will be used in the next process, which is the network configuration of a physical device. After researching documentation, I found two possible approaches to determine if the Wi-Fi password is empty. The first approach is to directly check the encryption type of the current Wi-Fi. If there is no encryption type, the Wi-Fi password is empty. The second approach is to use Apple's NEHotspotConfiguration class to attempt connecting to the Wi-Fi and determine if the password is empty. However, both approaches have encountered issues. For the first approach, there seems to be no public API available to directly retrieve the Wi-Fi encryption type. For the second approach, when using NEHotspotConfiguration to connect, I first get the Wi-Fi's SSID and then attempt to connect with an empty password. I am using [NEHotspotConfiguration alloc] initWithSSID:ssid] to create a configuration, and then I call [NEHotspotConfigurationManager sharedManager] applyConfiguration: to connect. However, regardless of whether the Wi-Fi is actually encrypted or unencrypted, no error is returned. The code is as follows: NSString *ssid = [NetInterface getCurrent_SSID]; // The Wi-Fi SSID that needs to be checked NEHotspotConfiguration *configuration = [[NEHotspotConfiguration alloc] initWithSSID:ssid]; configuration.joinOnce = YES; // Remove previous configuration (optional) [[NEHotspotConfigurationManager sharedManager] removeConfigurationForSSID:ssid]; self.isWiFiEmptyOperateState = 1; // Attempt to apply the new configuration [[NEHotspotConfigurationManager sharedManager] applyConfiguration:configuration completionHandler:^(NSError * _Nullable error) { self.isWiFiEmptyOperateState = 2; if (error) { if (error.code == NEHotspotConfigurationErrorInvalid) { NSLog(@"Wi-Fi %@ is encrypted, a password is required", ssid); } else if (error.code == NEHotspotConfigurationErrorUserDenied) { NSLog(@"User denied the Wi-Fi configuration"); } else { NSLog(@"Other error: %@", error.localizedDescription); } } else { NSLog(@"Successfully connected to Wi-Fi %@, this network might be open", ssid); } }]; In the code above, it always ends up logging "Successfully connected to Wi-Fi." Is there any other approach that can fulfill my functional requirement? I noticed that some apps on the App Store have implemented this functionality, but all my attempts so far have failed.

Date/Time: 2023-12-22 10:15:42.0985 +0800 Launch Time: 2023-12-22 10:12:52.8757 +0800 OS Version: iPhone OS 17.1.2 (21B101) Release Type: User Baseband Version: 4.06.02 Report Version: 104 Exception Type: EXC_CRASH (SIGKILL) Exception Codes: 0x0000000000000000, 0x0000000000000000 Termination Reason: FRONTBOARD 3131951633 <RBSTerminateContext| domain:10 code:0xBAADCA11 explanation: reportType:CrashLog maxTerminationResistance:Interactive> Triggered by Thread: 0 Thread 0 name: Dispatch queue: com.apple.main-thread Thread 0 Crashed: 0 libsystem_kernel.dylib 0x1e6bfc1d8 mach_msg2_trap + 8 1 libsystem_kernel.dylib 0x1e6bfbf70 mach_msg2_internal + 79 2 libsystem_kernel.dylib 0x1e6bfbe88 mach_msg_overwrite + 435 3 libsystem_kernel.dylib 0x1e6bfbcc8 mach_msg + 23 4 CoreFoundation 0x19f725d0c __CFRunLoopServiceMachPort + 159 5 CoreFoundation 0x19f723c04 __CFRunLoopRun + 1207 6 CoreFoundation 0x19f723668 CFRunLoopRunSpecific + 607 7 GraphicsServices 0x1e2aee5ec GSEventRunModal + 163 8 UIKitCore 0x1a1b402b4 -[UIApplication _run] + 887 9 UIKitCore 0x1a1b3f8f0 UIApplicationMain + 339 10 iCSee 0x103921380 main + 115 (main.m:17) 11 dyld 0x1c2176dcc start + 2239