macOS App icon and custom text in the Password dialog

[McBgnr]

Hello,

I am trying to customize the Authorization dialog with custom icon and text. I am using the following code:

	SFAuthorization *authorization = [SFAuthorization authorization];
 
	NSString *pathToIcon = [[NSBundle mainBundle]pathForImageResource:@"unchecked.png"];
 
	AuthorizationItem dialogConfiguration[2] = {
		{kAuthorizationEnvironmentIcon, [pathToIcon length], (void*) [pathToIcon
																	  UTF8String], 0},
		{kAuthorizationEnvironmentPrompt, [prompt length], (char *) [prompt
																	UTF8String], 0}
	};
 
	AuthorizationEnvironment authorizationEnvironment = {2,dialogConfiguration};
 
	// Specify the rights we want.
	AuthorizationItem desiredRight = { kAuthorizationRightExecute, 0, NULL, 0};
	AuthorizationRights desiredRights = { 1, &desiredRight};
 
	// Ask the user to authenticate as an administrator.
	if( ![authorization permitWithRights:&desiredRights
								   flags:(kAuthorizationFlagDefaults | kAuthorizationFlagInteractionAllowed |
										  kAuthorizationFlagExtendRights) environment:&authorizationEnvironment
						authorizedRights:NULL] )
	{
	}

Although the text is getting loaded, but the icon is not getting loaded. I am not sure what could be the reason for this. Any pointers will be very helpful. I want the icon to be shown on the LockIcon and in the Details sections.

I have tried using const char * type string in place of NSString for pathToIcon. But that did not work either... any hints, suggestions are welcome.