Not sure what license tag to use

[Miro Hrončok]

Hi, given the following terms:

  * MAY be used for commercial applications
  * MAY be shared freely
  * MUST NOT be reverse engineered

What kind of license tag is supposed to be used? The ideas are:

  * Redistributable, no modification permitted
  * Redistributable
  * Distributable

(The package belongs to nonfree.)

Thanks for help.
-- 
Miro Hrončok
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Phone: +420777974800
IRC: mhroncok