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CRC check to verify release of application

We are looking to integrate source code control of our test applications.  Each release we are looking to perform a CRC of the application used, and on the production floor we would be checking the CRC number of the software installed to make sure it is the current release.  How would we run a CRC algorithm on the VIs we create?
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The easiest way to do this is to use an external tool just for that purpose. There's plenty of them out there. If you want to write your own tool you would first need to decide what kind of CRC you want, and then you would have to write it. As for calculating it you would essentially need to read the VI as a binary file and then calculate the CRC off of that.


Still think using an external tool would be much easier. 

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