File or Directory Encryption

potlamurali · 05-02-2003, 05:00 AM

HI,

I woul like to know is there any way to protect one file or directory with a password on linux.

any help is greatly appreciated

markus1982 · 05-02-2003, 05:52 AM

Maybe the Linux Encryption Howto is what you are looking for? If you want to encrypt a file and it's executable you could go for a executable protector ... like UPX ... just google

potlamurali · 05-02-2003, 08:23 AM

What i am looking is i want a directory and its contents to be proptected from all the users including root.

Is this possible ?

unSpawn · 05-02-2003, 09:18 AM

If you define "protect" as "hide", then it's possible to do so. Even the root user won't be able to find or handle 'em w/o reboot or other countermeasures. Look into the Grsecurity(.net) kernel patches and read the ACL docs.

*Another way would be to use a Linux Kernel Module (LKM) that does hiding of processes and files. Don't try this on a box you don't own (and even then) as it's obviously one of the most severe compromises of security.

tyler_durden · 05-02-2003, 10:05 PM

you could use GPG to encrypt the files.
http://www.gnupg.org/