Secure an Application/Software by expiration with Date?

Posted by JNL on Programmers See other posts from Programmers or by JNL
Published on 2013-06-27T13:55:14Z Indexed on 2013/06/27 16:28 UTC
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I have been working on some software application and I update them every 6 months. Currently, the way I track the date is by extracting the date from the system when the user installes the application, encrypt it and store it in a file locally. Whenever the application is started, it checks if 6 months have passed, then it works or it doesn't, in which case it shows an error message telling the user to update.

I wonder whether there is a better way to do this.

Any comments or suggestions would be highly appreciated

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