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--- can_we_hide_code [2011/12/14 17:30] – created k2patel
+++ can_we_hide_code [Unknown date] (current) – removed - external edit (Unknown date) 127.0.0.1
@@ Line 1: / Line 1: @@
-====== Can We Hide Code ======
-If you only want to hide it for the ignorant user, you "encrypt" your script with rot13.
-Say your script is called "script.sh". You can "encrypt" it with:
-<code bash>
-shell$ cat script.sh | tr 'a-zA-Z' 'n-za-mN-ZA-M' >skrypt.sh
-</code>
-Then put this code at the very start of the encrypted script "skrypt.sh":
-<code bash>
-#!/bin/sh
-FIFO=/tmp/__skrypt_$(date +%F)_$$
-mkfifo $FIFO
-sh $FIFO &
-tr 'a-zA-Z' 'n-za-mN-ZA-M' >$FIFO <<EOF_EOF
-</code>
-...and put these lines at the very end of the "encrypted" script:
-<code bash>
-EOF_EOF
-rm $FIFO >/dev/null 2>/dev/null
-</code>
-E.g. this is a complete "ecnrypted" script:
-<code bash>
-#!/bin/sh
-FIFO=/tmp/__skrypt_$(date +%F)_$$
-rm $FIFO >/dev/null 2>/dev/null
-mkfifo $FIFO
-sh $FIFO &
-tr 'a-zA-Z' 'n-za-mN-ZA-M' >$FIFO <<EOF_EOF
-# BEGIN of ecrypted script
-#!/ova/fu
-rpub "Tbbq zbeavat"
-rpub "Tbrqrazbetra"
-rpub "Thgragnt"
-rpub "Ohrabf qvnf"
-rpub "Nybun"
-# END of ecrypted script
-EOF_EOF
-rm $FIFO >/dev/null 2>/dev/null
-</code>
-P.S. Rot13 "encryption" is weak. Repeat the steps above for the already "encrypted" script to get double rot13 "encryption".