Working with encrypted files in Laravel (how to download decrypted file)

In my webapp, users can upload files. Before being saved and stored, the contents of the file are encrypted using something like this:

Crypt::encrypt(file_get_contents($file->getRealPath()));

I then use the file system that comes with Laravel to move the file

Storage::put($filePath, $encryptedFile);

I have a table to store information about each file with columns such as:

• id
• file_path
• file_name
• original_name

Now I want the user to be able to download this encrypted file. However, I'm having trouble decrypting the file and returning it to the user. In the file downloads response section of the Laravel documentation, it suggests to do this:

return response()->download($pathToFile, $name, $headers);

It wants a file path which is fine, but at which point can I decrypt the file contents so that it is actually readable? Thanks!

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