Free software license allowing re-distribution but disallowing editing/reverse engineering [closed]

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Which software license should one use to meet the following simple conditions:

1. Software is free to use

2. Software can be re-distributed

3. Software source is closed and remains my intellectual property (copywright) and cannot be decompiled/edited.

4. (If possible) The software cannot be sold.

Thanks in advance.

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The whole point of free software is that it can be modified to suit any user's potential requirements, so pretty much by definition, if you want point 3, your software isn't free.

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Sounds like shareware. I can't point you to a license I would personally recommend, but Google has lots of results. See also http://en.wikipedia.org/wiki/Shareware