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Full Discussion: Encryption in Linux?
Top Forums UNIX for Beginners Questions & Answers Encryption in Linux? Post 302991107 by xdawg on Tuesday 7th of February 2017 09:49:25 AM
Old 02-07-2017
Encryption in Linux?

Hi, we have a brand new Centos 6.8 build, and after some discussion it seems that there is some interest in securing the entire system using whole disk encryption.

What is/are the best option/s, and is this something that can be done after Centos is installed (like for example PGP WDE in Windows allows you to do the encrypting once the OS is installed), or does it require formatting/starting over from scratch?

Should probably also ask, is there a significant advantage to encrypting the whole disk, rather than just the partition/s containing their sensitive data (which is really what they are concerned with losing)? This is a pretty big physical server so it's not a mobile device/laptop, and these are internal drives, but they're trying to be super cautious with this project.

---------- Post updated 02-07-17 at 06:49 AM ---------- Previous update was 02-06-17 at 06:40 PM ----------

I found what I was looking for, it looks like there is a way to do LUKS in-place conversion but it's not without risks.

Since this is a new system, I'm going to try to talk them into just encrypting partitions where the data will actually be stored, if not I'll just reinstall I guess.
 

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BRANDELF(1)						    BSD General Commands Manual 					       BRANDELF(1)

NAME
brandelf -- mark an ELF binary for a specific ABI SYNOPSIS
brandelf [-lv] [-f ELF_ABI_number] [-t string] file ... DESCRIPTION
The brandelf utility marks an ELF binary to be run under a certain ABI for FreeBSD. The options are as follows: -f ELF_ABI_number Forces branding with the supplied ELF ABI number. Incompatible with the -t option. These values are assigned by SCO/USL. -l Writes the list of all known ELF types to the standard error. -v Turns on verbose output. -t string Brands the given ELF binaries to be of the string ABI type. Currently supported ABIs are ``FreeBSD'', ``Linux'', and ``SVR4''. file If -t string is given it will brand file to be of type string, otherwise it will simply display the branding of file. EXIT STATUS
Exit status is 0 on success, and 1 if the command fails if a file does not exist, is too short, fails to brand properly, or the brand requested is not one of the known types and the -f option is not set. EXAMPLES
The following is an example of a typical usage of the brandelf command: brandelf file brandelf -t Linux file SEE ALSO
The Santa Cruz Operation, Inc., System V Application Binary Interface, http://www.sco.com/developer/devspecs/, April 29, 1998 (DRAFT). HISTORY
The brandelf manual page first appeared in FreeBSD 2.2. AUTHORS
This manual page was written by John-Mark Gurney <gurney_j@efn.org>. BSD
February 6, 1997 BSD
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