in reply to encryting scripts
This would be nothing more than obfuscation; anyone who looked at your wrapper script could use the same method to recover the cleartext of the encrypted script.
Also, if you are extracting the script as cleartext and storing it on a disk in a temporary location, it would be easy to get that cleartext file; you just have to read it between the time when it is opened and when it is deleted.
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Seekers of Perl Wisdom