In my project, I need to decrypt the encrypted xlsx file and then parse it into xml. Is there any recommended method in iOS
ios parse xlsx
There's no supported way for you to decode an xlsx file with the Apple APIs currently available. You may be better off pursuing this by consulting with the owner of the file format, or libraries vended by others that work with that file format.
If you'd like Apple to consider adding the necessary functionality, please file an enhancement request using Feedback Assistant. Once you file the request, please post the FB number here.
If you're not familiar with how to file enhancement requests, take a look at Bug Reporting: How and Why?