Comments on: HOWTO: Encrypting a shell script on a Linux or Unix based system

By: Mohammed

Mohammed — Tue, 09 Feb 2010 10:37:00 +0000

You can use tclkit and Starkit to encrypt expect scripts.
Refer http://www.equi4.com/ for more details.

~mohammed

By: Admin

Admin — Thu, 24 Sep 2009 05:42:57 +0000

It seems that expect is some sort of interactive program. I have never used it so I don’t have much idea. It seems that expect command is expecting (no pun intended) some kind of data input. If you can post your part of the script in which you are having trouble may be I can give you some more ideas?

By: LETIAN KASHORDA

LETIAN KASHORDA — Mon, 21 Sep 2009 21:18:01 +0000

having a problem.
whenever i try encrpyt a script it gives this error. am trying to use the expect command in the script so am guessing shc doesnt recognize it
here the error.
shc Unknown shell (expect): specify [-i][-x][-l]
shc: Success

Thanx in advance

By: Admin

Admin — Mon, 27 Jul 2009 03:15:43 +0000

Hmm…I guess you didn’t see that coming…Well I can tell you two things:
a) Try reading the source code and see if you can get some clue from there as to how to disassemble it. AFAIK, the script uses rc4 algorithm to encrypt it.

b) Try emailing the author and see if he replies back. Most likely they will not.
http://www.datsi.fi.upm.es/~frosal/

By: Ghost

Ghost — Sun, 26 Jul 2009 20:59:42 +0000

thanks for this post
but after i encrypted one of my bash scripts and it works fine
i had a problem with my HDD and i have only the encrypted script with my friend

is there any way to decrypt this files ?

some of this scripts need update and it’s about 900 line i can’t type it again

please let me know if there any possible way to decrypt this files

By: Raz

Raz — Thu, 12 Mar 2009 13:23:16 +0000

Thanks Friend!
You made my day It works!

By: SeeFor

SeeFor — Wed, 28 Jan 2009 14:56:12 +0000

That did it, thanks for your help.

This is a good way to protect your shell scripts.

Thanks,
Sif

By: SeeFor

SeeFor — Wed, 28 Jan 2009 14:55:28 +0000

That did it thanks, I’m using Fedora 10

Thanks for the help, this is really cool way of protecting your shell scripts.

By: Kushal

Kushal — Tue, 27 Jan 2009 23:36:10 +0000

Did you install gcc? do:
apt-get update
apt-get install gcc libc6-dev

If this does not work then let me know which Distro are you using….

Thank you for your comment.

By: SeeFor

SeeFor — Tue, 27 Jan 2009 23:17:38 +0000

Great post
I have a problem:
[root@CRBC-SRV-SYSLOG shc-3.8.6]# shc -f test.sh
sh: cc: command not found
shc: Success

It creates the test.sh.x.c file but not else.
Looks like a great app but how do I get it to work?
test.sh:
#!/bin/sh

echo “This is a test!