Saving App-Specific Docs
tjhopkins224 at hotmail.com
Tue Sep 26 11:49:16 EDT 2006
Thanks for the tips. What I'm primarily looking for is a way to store
registration key/trial expiration data in a way that is least visible to the
user. For an OS X application, is there a way to store this type of data in
its plist file?
If I store the data in a text file, regardless of encoding mechanism, the
user could potentially find the file and delete it, thereby starting the
trial period for the application anew. I noticed in a couple of Cocoa
shareware apps that I tried, that if I deleted their pList files in
Preferences, it did not affect their trial periods, i.e., a 10-day trial
that had been down to 8-days remained at 8-days even though I deleted its
corresponding plist file. In incidences like these, where is that data
stored that says how much time is left on a trial or that the copy has
already been registered?
>From: Richard Gaskin <ambassador at fourthworld.com>
>Reply-To: How to use Revolution <use-revolution at lists.runrev.com>
>To: How to use Revolution <use-revolution at lists.runrev.com>
>Subject: Re: Saving App-Specific Docs
>Date: Tue, 26 Sep 2006 07:56:07 -0700
>Trevor Hopkins wrote:
>>From a Rev application, how does one go about creating and writing
>>to/reading from a document that is only openable by the Rev app itself
>>(i.e., not a text document that anyone can open). I can see how to write
>>data to a text document but what about to another type of doc that not
>>anyone can get into so easily?
>There are many good options for protecting data. In addition to the other
>suggestions posted here, if your security needs are modest there's a very
>lightweight but reasonably efficient and easy-to-use encryption handler
>posted at RevJournal:
>Most more "industrial strength" encryption you might also consider Rev's
>Blowfish implementation, included in the Studio and Enterprise packages.
> Richard Gaskin
> Managing Editor, revJournal
> Rev tips, tutorials and more: http://www.revJournal.com
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