PGP Whole Disk Encryption for Linux 10.1 Operating instructions

PGP WDE for Linux

User's Guide

Version Information

PGP Whole Disk Encryption User's Guide. Version 10.1.0. Released September 2010.

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4

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i

Contents

Introduction 1

About PGP Whole Disk Encryption for Linux 1

Important Terms 2

Audience 3

System Requirements 3

Using PGP Whole Disk Encryption for Linux in a PGP Universal Server-Managed Environment 3

Installing and Uninstalling 5

Installing 5

Uninstalling 6

Licensing 7

Overview 7

--license-authorize 8

Licensing via a Proxy Server 8

Enrolling 11

Overview 11

--enroll 12

--check-enroll 13

The Command-Line Interface 15

Overview 15

Scripting 16

WDE-ADMIN Active Directory Group 16

Passphrases 16

--interactive 17

Before You Encrypt 19

Ensure Disk Health 19

Choose Encryption Options 20

Maintain Power Throughout Encryption 20

ii

PGP WDE for Linux User's Guide Contents

The Encryption Process 21

Overview 21

Using --secure 21

Using Individual Commands 22

The PGP BootGuard Screen 25

Overview 25

Authenticating 26

Authenticating if You Have Forgotten Your Passphrase 27

Choosing a Keyboard 28

Generic Commands 29

--help (-h) 29

--version 30

Disk Information Commands 31

--enum 31

--info 32

--show-config 33

--status 33

Boot Bypass Commands 35

--add-bypass 35

--check-bypass 37

--remove-bypass 37

Disk Operation 39

--decrypt 39

--encrypt 40

--resume 41

--secure 42

--stop 43

Disk Management 45

--auth 45

--instrument 46

--uninstrument 46

iii

PGP WDE for Linux User's Guide Contents

User Management Commands 49

--add-user 49

--change-passphrase 50

--change-userdomain 51

--list-user 52

--remove-user 53

--verify-user 53

PGP BootGuard Customization Commands 55

--set-background 55

--set-language 56

--set-sound 57

--set-start 58

--set-text 59

Recovery Token Commands 61

--new-wdrt 61

Local Self Recovery 63

--recovery-configure 64

--recovery-questions 65

--recovery-verify 66

--recovery-remove 67

--recovery-change-passphrase 67

Authenticating if you Have Forgotten Your Passphrase 68

Options 71

Overview 72

"Secure" Options 74

--admin-authorization 74

--admin-passphrase 74

--all 75

--answers-file 75

--auto-start 75

--beep 75

--count 76

--dedicated-mode 76

--disk (-d) 76

--display 77

--domain-name 77

--fast-mode 77

--image 78

--interactive 78

iv

PGP WDE for Linux User's Guide Contents

--keyboard 78

--keyid 78

--license-email 79

--license-name 79

--license-number 79

--license-organization 80

--message 80

--new-domain 80

--new-passphrase 81

--no-beep 81

--partition 81

--passphrase (-p) 82

--questions-file 82

--recovery-token 82

--safe-mode 83

--username 83

Quick Reference 85

Commands 85

Options 87

Troubleshooting 89

Overview 89

Encryption Does Not Begin 89

Encryption Does Not Finish 91

Problems at PGP BootGuard 92

1

Introduction

This guide tells you how to use PGP Whole Disk Encryption for Linux.

In This Chapter

About PGP Whole Disk Encryption for Linux ............................................ 1

Important Terms........................................................................................ 2

Audience.................................................................................................... 3

System Requirements............................................................................... 3

Using PGP Whole Disk Encryption for Linux in a PGP Universal Server-

Managed Environment

.............................................................................. 3

About PGP Whole Disk Encryption for Linux

Thank you for using PGP Whole Disk Encryption for Linux, a software product

from PGP Corporation that locks down the entire contents of your Linux system

using PGP Whole Disk Encryption (WDE) technology.

For more information about PGP WDE, see the:



PGP Desktop User's Guide



PGP WDE Quick Start Guide



PGP WDE Data Sheet (available via the PGP WDE page on the PGP

Corporation website)

PGP Whole Disk Encryption for Linux gives you access to PGP WDE

functionality using a command-line interface.

The encryption algorithm used by PGP Whole Disk Encryption for Linux is AES-

256. The hashing algorithm is SHA-1. You cannot change these.

Warning: Once you unlock a disk, its files are available to you—as well as

anyone else who can physically use your system. Your files are unlocked until

you lock them again by shutting down your system.

2

PGP WDE for Linux User's Guide Introduction

Important Terms

Understanding the following terms will help make it easier to use PGP Whole

Disk Encryption for Linux:



PGP Whole Disk Encryption (PGP WDE): a technology that encrypts the

entire contents of a disk; boot disks, partitions, and non-boot disks such as

USB thumb drives can all be whole disk encrypted.



PGP Whole Disk Encryption for Linux: a software product from PGP

Corporation that brings PGP WDE technology to the Linux platform,

allowing you to lock down the entire contents of your Linux system.



command line: the interface to PGP Whole Disk Encryption for Linux

functionality. All PGP Whole Disk Encryption for Linux commands and

options are accessed via the command-line interface.



passphrase user: a user who can authenticate to an encrypted disk using

a passphrase.



public-key user: a user who can authenticate to an encrypted disk using

the passphrase to the corresponding private key.



encrypt: the process of "scrambling" data so that it is not usable unless you

properly authenticate.



decrypt: the process of "unscrambling" encrypted data.

 master boot record (MBR): software on a disk that is "in front" of the

partition table; that is, it is implemented during the startup process

before

the operating system itself. The instructions in the MBR tells the system

how to boot.



instrument: a part of the process of whole disk encrypting a disk/partition

where the Linux MBR is replaced with the PGPMBR.



PGPMBR: an MBR from PGP Corporation that implements the PGP

BootGuard. Once a disk is instrumented, even if it is not fully encrypted,

subsequent startups will bring up PGP BootGuard.



PGP BootGuard: the screen that appears after instrumenting a disk that

requires proper authentication for the boot process to continue. If proper

authentication is

not provided, the boot process will not continue; the

operating system will not load and the system will not be usable.



uninstrument: removing the PGPMBR and replacing it with the original

Linux MBR (which was saved when the disk was instrumented).

 whole disk recovery token (WDRT): an additional passphrase for a whole

disk encrypted disk that is passed to the appropriate PGP Universal Server

if the disk is part of a PGP Universal-managed environment.



PGP Universal Server: a management console for securing data from PGP

Corporation.

3

PGP WDE for Linux User's Guide Introduction

 managed user: someone using PGP Whole Disk Encryption for Linux in a

PGP Universal Server-managed environment. Managed users receive

policies and settings from their PGP Universal Server.



enroll: the process of a user in a PGP Universal Server-managed

environment contacting their PGP Universal Server so that they can receive

applicable policies and settings.



standalone user: someone using PGP Whole Disk Encryption for Linux

with no associated PGP Universal Server. Standalone users establish their

own policies and settings.



recovery: the process of restoring access to a disk/partition that has been

whole disk encrypted but now cannot be decrypted.

Audience

This User's Guide is for anyone who is going to be using PGP Whole Disk

Encryption for Linux to perform PGP WDE functions on their Linux system.

System Requirements

The system requirements for PGP Whole Disk Encryption for Linux are:

 Ubuntu 8.04 and 9.04 (32-bit versions) and Red Hat Enterprise

Linux/CentOS 5.2 and 5.3 (32-bit versions), Ubuntu 8.04 and 9.04 (64-bit

versions), Red Hat Enterprise Linux 5.2 and 5.3 (64-bit versions)

Note: CentOS is free, open source software based on Red Hat Enterprise

Linux. For the purposes of supporting PGP Whole Disk Encryption for Linux,

the two are functionally equivalent.

 512 MB of RAM

 64 MB hard disk space

Using PGP Whole Disk Encryption for Linux in a PGP

Universal Server-Managed Environment

If you are using PGP Whole Disk Encryption for Linux in a PGP Universal Server-

managed environment, your PGP Universal administrator may have enabled or

disabled certain features. For example, you may be required to encrypt your

drive immediately after enrolling with your PGP Universal Server.

4

PGP WDE for Linux User's Guide Introduction

If you have any questions about features that may be have been automatically

enabled or disabled, contact your PGP Universal administrator.

5

2

Installing and Uninstalling

This section describes how to install and uninstall PGP Whole Disk Encryption

for Linux.

In This Chapter

Installing..................................................................................................... 5

Uninstalling ................................................................................................ 6

Installing

The PGP Whole Disk Encryption for Linux installer is a bsx (Bash Self-eXtracting)

file.

You must have root privileges to install.

Note: The installer file may have a slightly different filename than shown in

the procedure below depending on the platform you are installing onto.

 To install PGP Whole Disk Encryption for Linux

1 Download the installer file, called

pgp_desktop_10.0.1_linux_ub9.04_i386.bsx for Ubuntu 9.04, to a

known location on your system.

2 Begin the installation process using either of the following methods:

a Make the file an executable (using chmod +x [filename]),

then use

./[filename] Enter to begin the installation.

or

b Begin the installation via a shell: bash [filename] Enter

3 Follow the on-screen instructions.

4 Reboot your system when the installation is complete.

6

PGP WDE for Linux User's Guide Installing and Uninstalling

Uninstalling

Use the built-in uninstaller for the version of Linux you are using to uninstall

PGP Whole Disk Encryption for Linux. You must have root privileges to

uninstall.

Warning: You must decrypt any whole disk encrypted drives before

uninstalling PGP Whole Disk Encryption for Linux or removing any packages.

The packages that are installed are: pgp-libs, pgpwde, pgp-release, and kmod-

pgpwde.

7

3

Licensing

This section describes how to license PGP Whole Disk Encryption for Linux.

You must license PGP Whole Disk Encryption for Linux if you are using it

standalone; that is, you are

not in a PGP Universal Server-managed

environment.

You do not need to

enroll PGP Whole Disk Encryption for Linux if you are using

it standalone; that is only required for PGP Universal Server-managed

environments.

Note: As PGP Whole Disk Encryption for Linux will not operate normally until

licensed, you should license it immediately after installation.

In This Chapter

Overview ................................................................................................... 7

--license-authorize...................................................................................... 8

Licensing via a Proxy Server...................................................................... 8

Overview

PGP Whole Disk Encryption for Linux requires a valid license to operate. This

section describes how to license your copy of PGP Whole Disk Encryption for

Linux.

PGP Whole Disk Encryption for Linux supports the following licensing

scenarios:

 Using a License Number

. This is the normal method to license PGP Whole

Disk Encryption for Linux. You must have your license information and a

working connection to the Internet.

 Through a Proxy Server. If you connect to the Internet through a proxy

server, use this method to license PGP Whole Disk Encryption for Linux.

You must have your license information and the appropriate proxy server

information.

The licensing command is

--license-authorize.

Once PGP Whole Disk Encryption for Linux is correctly installed and licensed on

your system, you can encrypt your drive. See The Encryption Process for

complete information.

8

PGP WDE for Linux User's Guide Licensing

--license-authorize

Use --license-authorize to license PGP Whole Disk EncryptionLinux.

The usage format is:

pgpwde --license-authorize --license-name <name> --

license-number <number> [--license-email

<emailaddress>] [--license-organization <org>]

Where:



--license-authorize is the command to license PGP Whole Disk

Encryption for Linux.



--license-name is the option to specify the user.

<name> is your name or a descriptive name.



--license-number is the option to enter a license number.

<number> is a valid license number for PGP Whole Disk Encryption for

Linux.



--license-email is the option to enter an email address.

<emailaddress> is a valid email address.

 --license-organization is the option to enter an organization.

<org> is the name of your organization.

If you decide not to enter a license email, you may see a warning message but

your license will authorize.

Example:

pgpwde --license-authorize --license-name "Alice

Cameron"

--license-number "aaaaa-bbbbb-ccccc-ddddd-eeeee-fff"

--license-email "[email protected]"

--license-organization "Example Corporation"

(When entering this text, it all goes on a single line.)

Licensing via a Proxy Server

If the Internet access of the system hosting PGP Whole Disk Encryption for

Linux is via an HTTP proxy connection, you can still license your copy of PGP

Whole Disk Encryption for Linux directly; you simply need to add the necessary

proxy information.

Use

--license-authorize to license PGP Whole Disk Encryption for Linux

via a proxy server.

9

PGP WDE for Linux User's Guide Licensing

The usage format is:

pgpwde --license-authorize --license-name <name> --

license-number <number> [--license-email

<emailaddress>] [--license-organization <org>] [--

proxy-server <proxyserver>] [--proxy-username

<proxyusername>] [--proxy-passphrase <proxypass>]

Where:



--license-authorize is the command to license PGP Whole Disk

Encryption for Linux.



--license-name is the option to specify the user.

<name> is your name or a descriptive name.



--license-number is the option to enter a license number.

<number> is a valid license number for PGP Whole Disk Encryption for

Linux.



--license-email is the option to enter an email address.

<emailaddress> is a valid email address.

 --license-organization is the option to enter an organization.

<org> is the name of your organization.

 --proxy-server is the command to go through a proxy server to access

the Internet.

<proxyserver> is the appropriate proxy server.



--proxy-username is the command to specify a user on the proxy server

when authentication is required.

<proxyusername> is a valid username on the specified proxy server.



--proxy-passphrase is the option to specify the passphrase of the

specified user when authentication is required.

<proxypass> is the passphrase for the specified user on the proxy server.

Example:

pgpwde --license-authorize --license-name "Alice

Cameron"

--license-number "aaaaa-bbbbb-ccccc-ddddd-eeeee-fff"

--license-email "[email protected]"

--license-organization "Example Corporation"

--proxy-server "proxyserver.example.com"

--proxy-username "acameron"

--proxy-passphrase 'a_cameron1492sailedblue'

(When entering this text, it all goes on a single line.)

11

4

Enrolling

This section describes how to enroll PGP Whole Disk Encryption for Linux.

You must enroll PGP Whole Disk Encryption for Linux if you are using it in a

PGP Universal Server-managed environment.

You do not need to

license PGP Whole Disk Encryption for Linux in a PGP

Universal Server-managed environment, as the license is included in the

installer.

Note: As PGP Whole Disk Encryption for Linux will not operate normally until

you enroll, you should enroll immediately after installation.

In This Chapter

Overview ................................................................................................. 11

--enroll ...................................................................................................... 12

--check-enroll............................................................................................ 13

Overview

You must enroll with a PGP Universal Server before you can use any PGP

Whole Disk Encryption for Linux features in a PGP Universal Server-managed

environment.

When enrollment is complete, PGP Whole Disk Encryption for Linux will receive

policies and settings from its PGP Universal Server. It will also send information

to the PGP Universal Server that can be seen by the PGP Universal

administrator.

Note: You must initiate enrollment on your own. You will not be prompted to

do so.

Enrollment uses LDAP credentials. The username and passphrase required for

both enrolling and checking enrollment status are the username and passphrase

of the user on the LDAP server.

If enrollment is unsuccessful, contact your PGP Universal administrator for

assistance.

12

PGP WDE for Linux User's Guide Enrolling

You can check the enrollment status of a client using the --check-enroll

command. When successful, this command will note that the client is enrolled

and will download the latest policies and settings. If unsuccessful, this means

that the client must enroll again because of a change of policies or settings on

the PGP Universal Server.

Once PGP Whole Disk Encryption for Linux is correctly installed on your system

and you have enrolled, you can encrypt your drive. Refer to The Encryption

Process for complete information.

--enroll

Use --enroll to enroll PGP Whole Disk Encryption for Linux.

Entering a username and passphrase on the command line are optional. If you

do not enter them, you will be prompted for them.

Note: --enroll is preceded by pgpenroll instead of the usual pgpwde.

The usage format is:

pgpenroll --enroll [--username <user>] [--passphrase

<phrase>]

Where:



--enroll is the command to enroll with a PGP Universal Server.

 --username specifies a username for an operation (optional).

<user> is the username (on the LDAP server) of the user being enrolled.

 --passphrase specifies the passphrase for an operation (optional).

<phrase> is the passphrase (on the LDAP server) of the user being

enrolled.

Examples:



pgpenroll --enroll --username "Alice Cameron"

--passphrase 'Frodo@Baggins22'

This example shows user Alice Cameron enrolling PGP Whole Disk

Encryption for Linux. The username and passphrase she is using are her

credentials on her organization's LDAP server.



pgpenroll --enroll

This example shows a user enrolling PGP Whole Disk Encryption for Linux.

Because the username and passphrase are not supplied on the command

line, the enrolling user will be prompted for them.

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PGP Whole Disk Encryption for Linux 10.1 Operating instructions

PGP Whole Disk Encryption for Linux 10.1 Operating instructions

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