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Software Evaluation - License

Can anyone help me in the software licensing module. We have created a new application and want to release a demo (30-day trial version) of our tool later, we need the full version. How can I create a license file or license code and how to limit a 30-day evaluation. Please help me with this.

Our application is developed on windows in QT

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2 answers

There may be several possibilities:

  • Mark and write down the installation date somewhere safe (registry or external encrypted file)
  • For each run, check the registration date as well as the system date.
  • /; / / .
  • currentDate - installationDate > 30 -.

:

  • keygen (key encryptor), ( ) .
  • key decrytor , , , try (?) .

this this, SerialNumberTemplate, .

- EDIT -

:

  • . ; Install .
  • . DateTime.Now.Date, / -, .
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, :

  • , 30 .
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Source: https://habr.com/ru/post/1738015/

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