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Home >Unix > Archive and password protect a directory

In case you want protect some file. This is a quick and simple way to do it.
It's not high level security, but it allows you to increase security on files in shared environment, for instance.

1) have all the files you want to protect in a folder:

mm@host1 /home/mm $ ls -latr mydir/

-rw-rw-r-- 1 mm mm 913 Mar 2 15:56 d2.txt
-rw-rw-r-- 1 mm mm 904 Mar 2 15:56 out.log
-rw-rw-r-- 1 mm mm 1884 Mar 2 15:48 dec_text.txt
-rw-rw-r-- 1 mm mm 912 Mar 2 15:36 enc_text.txt
-rwx------ 1 mm mm 141 Mar 2 15:02 f.sh

2) Archive and compress your folder

tar cz mydir | openssl enc -aes-256-cbc -e > mydir.tar.enc

enter aes-256-cbc encryption password:
Verifying - enter aes-256-cbc encryption password:

3) The encrypted archive has been created

mm@host1 /home/mm $ ls -latr

drwxrwxr-x 2 mm mm 4096 Mar 2 16:34 mydir
-rw-rw-r-- 1 mm mm 4800 Mar 2 16:38 mydir.tar.enc

4) let's try it (move the directory you just archived and password protected somewhere else ... in real world you will remove the files ... first make sure this works for you.

mm@host1 /home/mm $ mv mydir /tmp
# or (but do not do this with real files, before testing)
mm@host1 /home/mm $ rm -r mydir

5) now decrypt the file, this command will ask for the password and inflate the archive in the directory.

openssl enc -aes-256-cbc -d -in mydir.tar.enc | tar xz

enter aes-256-cbc decryption password:

6) check the files are back in the directory

Warning: include(ads/text468x15.html): failed to open stream: No such file or directory in D:\inetpub\webs\fishscriptcom\documents\view_document.php on line 131

Warning: include(): Failed opening 'ads/text468x15.html' for inclusion (include_path='.;C:\php\pear') in D:\inetpub\webs\fishscriptcom\documents\view_document.php on line 131

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