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Trusted Platform Module (TPM)
Quick Reference Guide
System builders/integrators should give this Guide to the
system owners to assist them in enabling and activating
the Trusted Platform Module.
Warning of Potential Data Loss ...................................... 3
Trusted Platform Module (TPM)...................................... 4
System Requirements ..................................................... 4
Security Precautions ....................................................... 4
Password Procedures........................................................................... 5
Emergency Recovery File Back Up Procedures .................................5
Hard Drive Image Backup Procedures................................................6
Clear Text Backup (Optional).............................................................6
Trusted Platform Module Ownership ............................. 6
Trusted Platform Module Software Installation............. 6
Enabling the Trusted Platform Module .......................... 7
Assuming Trusted Platform Module Ownership ........... 7
Recovery Procedures ...................................................... 8
How to Recover from a Hard Drive Failure........................................ 8
How to Recover from a Desktop Board or TPM Failure.....................8
Clearing Trusted Platform Module Ownership .............. 9
Support Links.................................................................. 10
D15174-001
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INFORMATION IN THIS DOCUMENT IS PROVIDED IN CONNECTION
WITH INTEL
ESTOPPEL OR OTHERWISE, TO ANY INTELLECTUAL PROPERTY
RIGHTS IS GRANTED BY THIS DOCUMENT. EXCEPT AS PROVIDED
IN INTEL'S TERMS AND CONDITIONS OF SALE FOR SUCH
PRODUCTS, INTEL ASSUMES NO LIABILITY WHATSOEVER, AND
INTEL DISCLAIMS ANY EXPRESS OR IMPLIED WARRANTY,
RELATING TO SALE AND/OR USE OF INTEL PRODUCTS INCLUDING
LIABILITY OR WARRANTIES RELATING TO FITNESS FOR A
PARTICULAR PURPOSE, MERCHANTABILITY, OR INFRINGEMENT OF
ANY PATENT, COPYRIGHT OR OTHER INTELLECTUAL PROPERTY
RIGHT.
Intel products are not intended for use in medical, life saving, life
sustaining applications.
Intel may make changes to specifications and product descriptions at any
time, without notice.
Intel is a trademark or registered trademark of Intel Corporation or its
subsidiaries in the United States and other countries.
*Other names and brands may be claimed as the property of others.
Copyright © 2005 Intel Corporation
®
PRODUCTS. NO LICENSE, EXPRESS OR IMPLIED, BY
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Warning of Potential Data Loss
IMPORTANT USER INFORMATION. READ AND FOLLOW THESE
INSTRUCTIONS PRIOR TO TRUSTED PLATFORM MODULE
INITIALIZATION.
System integrators, owners, and end users must take precautions to mitigate the
chance of data loss. Data encrypted by any program utilizing the Trusted
Platform Module (TPM) may become inaccessible or unrecoverable if any of
the following occurs:
• Lost Password: Loss of any of the passwords associated with the TPM
will render encrypted data inaccessible. No password recovery is
available. Read the Security Precautions for Password Procedures.
•
Hard Drive Failure: In the event of a hard disk (or other storage media)
failure that contains encrypted data, an image of the hard disk (or other
storage media) must be restored from backup before access to encrypted
data may become available. The owner/user should backup the system
hard disk on a regular basis. Read the Security Precautions below for
Hard Drive Backup Procedures.
•
Platform Failure: In the event of a platform failure and/or replacement of
the desktop board, recovery procedures may allow migratable keys to be
recovered and may restore access to encrypted data. All non-migratable
keys and their associated data will be lost. Both the Wave Systems*
EMBASSY* Security Center and Wave Systems EMBASSY Trust Suite
utilize migratable keys. Please check any other software that accesses the
TPM for migratability. Read the Security Precautions for Emergency
Recovery File Back Up Procedures.
•
Loss of Trusted Platform Module Ownership: Trusted Platform
Module Ownership/contents may be cleared (via a BIOS switch) to allow
for the transfer of a system to a new owner. If TPM ownership is cleared,
either intentionally or in error, recovery procedures may allow the
migratable keys to be recovered and may restore access to encrypted data.
Read the Security Precautions for Emergency Recovery File Back Up
Procedures.
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Trusted Platform Module (TPM)
The Trusted Platform Module is a component on the desktop board that is
specifically designed to enhance platform security above-and-beyond the
capabilities of today’s software by providing a protected space for key
operations and other security critical tasks. Using both hardware and software,
the TPM protects encryption and signature keys at their most vulnerable
stages—operations when the keys are being used unencrypted in plain-text
form.
The TPM is specifically designed to shield unencrypted keys and platform
authentication information from software-based attacks.
System Requirements
• Intel® Desktop Board D945GNT Executive Series, D945GTP Executive
Series, or D945GCZ Executive Series
• Microsoft Windows* 2000 Professional (SP4) or Windows XP Professional
(SP2)
• NTFS file system
• Microsoft Internet Explorer 5.5 or later
• Adobe* Acrobat* 5.0 or later (included on the Intel
®
Express Installer CD)
Security Precautions
Security, like any other aspect of computer maintenance, requires planning.
What is unique about security has to do with understanding who "friends" are
and who adversaries are. The TPM provides mechanisms to enable the
owner/user to protect their information from adversaries. To provide this
protection, the TPM effectively puts "locks" around the data. Just like physical
locks, if keys or combinations are lost, the assets (data) may be inaccessible not
only to adversaries, but also to the asset owner/user.
The TPM provides two classes of keys: migratable and non-migratable.
Migratable keys are designed to protect data that can be used (unencrypted) on
more than one platform. One advantage is allowing the key data to be
replicated (backed-up and restored) to another platform. This may be because
of user convenience (someone uses more than one platform, or the data needs to
be available to more than one person operating on different platforms). Another
advantage to this type of key is that it can be backed-up and restored from a
defective platform onto a new platform.
However, migratable keys may not be the appropriate level of protection needed
for the application when the user wants the data restricted to a single platform.
This requires a non-migratable key. Non-migratable keys carry with them a
usage deficit in that while the key may be backed-up and restored (protected
from hard disk failure) they are not protected against system or TPM failure.
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The very nature of a non-migratable key is that they can be used on one and
only one TPM. In the event of a system or TPM failure, all non-migratable keys
and the data associated with them will be inaccessible and unrecoverable.
The following precautions and procedures may assist in recovering
from any of the previously listed situations. Failure to implement
these security precautions and procedures may result in
unrecoverable data loss.
Password Procedures
The Wave Systems EMBASSY Security Center software allows users to
configure passwords from 8 to 255 characters.
A good password should consist of:
• At least one upper case letter (A to Z)
• At least one numerical character (0 to 9)
• At least one symbol character (!, @, &, etc.)
Example Passwords: “I wear a Brown hat 2 worK @ least once-a-month” or
“uJGFak&%)adf35a9m”
✏ NOTE
Avoid using names or dates that can be easily guessed, such as birthdays,
anniversaries, family member names, or pet names.
All passwords associated with the EMBASSY Security Center (owner, TPM
Key Archive, and other archives) as well as the EMBASSY Trust Suite are
NOT RECOVERABLE and cannot be reset without the original text. The
system owner should document all passwords, store them in a secured location
(a vault, safe deposit box, or off-site storage), and have them available for
future use.
These documents should be updated after any password changes are made.
Emergency Recovery File Back Up Procedures
Use the EMBASSY Security Center to create the TPM Key Archive file
(keyarchive.xml) onto a removable media (a floppy, CDR, or flash media).
Once this is completed, the removable media should be stored in a secure
location. DO NOT LEAVE ANY COPIES of the TPM Key Archive on the
hard drive or within any hard drive image backups. If a copy of the TPM Key
Archive remains on the system, it could be used to compromise the Trusted
Platform Module and platform.
This procedure should be repeated after any password changes or the addition of
a new user.
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Hard Drive Image Backup Procedures
To allow for emergency recovery from a hard drive failure, frequent images of
the hard drive should be created and stored in a secure location. In the event of
a hard drive failure, the latest image can be restored to a new hard drive and
access to the encrypted data can be re-established.
✏ NOTE
All encrypted and unencrypted data that was added after the last image
was created will be lost.
Clear Text Backup (Optional)
It is recommended that system owners follow the Hard Drive Image Backup
Procedures.
This option is not recommended because the data is exposed during backup and
restores. To backup select files without creating a drive image, files can be
moved from secured programs or drive letters to an unencrypted directory. The
unencrypted (clear text) files may then be backed up to removable media and
stored in a secure location. The advantage of the clear text backup is that no
TPM key is required to restore the data.
Trusted Platform Module Ownership
The Trusted Platform Module is disabled by default when shipped and the
owner/end customer of the system assumes “ownership” of the TPM. This
permits the owner of the system to control initialization of the TPM and create
all the passwords associated with the TPM that will be used to protect their keys
and data.
System builders/integrators may install both the Wave Systems EMBASSY
Security Center and the Wave Systems EMBASSY Trust Suite, but SHOULD
NOT attempt to use or activate the TPM or either software package.
Trusted Platform Module Software Installation
The software package for the TPM can be installed from the following location
on the Intel Express Installer CD:
D:\software\Drivers\TPM\1.00.05R\1.00.05_NO_TPMPATCH_CCEK\setup.exe
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Enabling the Trusted Platform Module
The Trusted Platform Module is disabled by default when shipped to insure that
the owner/end customer of the system initializes the TPM and configures all
security passwords. The owner/end customer should use the following steps to
enable the TPM.
1. While the PC is displaying the splash screen (or POST screen), press the
<F2> key to enter BIOS.
2. Use the arrow keys to go to the Advanced Menu, select Peripheral
Configuration, and then press the <Enter> key.
3. Select the Trusted Platform Module, press <Enter>, and select Enabled and
press <Enter> again (display should show: Trusted Platform
Module [Enable]).
4. Press the <F10> key, and press Y.
5. The system should reboot and start Microsoft Windows.
Assuming Trusted Platform Module
Ownership
Once the TPM has been enabled, ownership must be assumed by using the
EMBASSY Security Center. The owner/end user should follow the steps listed
below to take ownership of the TPM:
1. Start the system.
2. Launch the EMBASSY Security Center.
3. Select the Owner tab and click on the Establish button.
4. Create the Owner password (before creating any password, review the
Password Recommendations made earlier in this document).
5. After successfully taking ownership of the TPM, select the User tab and
click on the Initialize button.
6. Enter the Windows login password to create and synchronize the TCG
Security Vault Password.
7. To create an archive of the TPM keys, select the Key Manager icon on the
left side of the EMBASSY Security Center and click on the Archive
button.
8. Choose a location to save the TPM Key Archive file (removable media
recommended; see Emergency Recovery File Back Up Procedures for
more information).
9. Create a password to protect the TPM Key Archive (this password should
not match the Owner password or any other password).
10. Enter the Owner password when prompted.
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11. After completing the archive function, the TPM Key Archive
(keyarchive.xml) that is now on a removable media should be stored in a
secure location. No copies of the keyarchive.xml should remain on the
system. This procedure should be repeated after any password changes or
the addition of new users or TPM enabled software.
12. All passwords associated with the EMBASSY Security Center Software
(owner, TPM Key Archive, and other passwords) are not recoverable and
cannot be reset without the original password. These passwords should be
documented and stored in a secured location (vault, safe deposit box, or
off-site storage) in case they are needed in the future. These documents
should be updated after any password changes.
Recovery Procedures
How to Recover from a Hard Drive Failure
Restore the latest hard drive image from backup to the new hard drive – no TPM
specific recovery is necessary.
How to Recover from a Desktop Board or TPM Failure
This procedure may restore the migratable keys from the TPM Key Archive, but
does not restore any previous keys or content to the TPM. This recovery
procedure may restore access to the EMBASSY Trust Suite that is secured with
migratable keys.
Requirements
• TPM Key Archive file (keyarchive.xml file created with the EMBASSY
Security Center)
• TPM Key Archive password (created with the EMBASSY Security Center)
• Owner password
• Working original operating system (OS) installation, or a restored image of
the hard drive
This recovery procedure may restore the migratable keys from the
previously created TPM Key Archive.
1. Replace the desktop board with the same model as the failed board.
2. Start the original OS or restore the original hard drive image.
3. Start the EMBASSY Security Center.
4. Take ownership of the Trusted Platform Module (see Assuming Trusted
Platform Module Ownership, steps 3 and 4 only).
5. To restore a TPM Key Archive, select the Key Manager icon on the left
side of the EMBASSY Security Center and click on the Restore button.
6. Enter the password for the TPM Key Archive when prompted.
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7. Enter the Owner password when prompted.
8. Restoring the keys may take up to five (5) minutes and you may be
prompted for your Windows password.
After the keys have been successfully restored, you should be able to access
previously encrypted files.
Clearing Trusted Platform Module Ownership
WARNING
Disconnect the desktop board's power supply from its AC power
source before you connect or disconnect cables, or install or remove
any board components. Failure to do this can result in personal
injury or equipment damage. Some circuitry on the desktop board
can continue to operate even though the front panel power switch
is off.
CAUTION
DATA ENCRYPTED BY ANY PROGRAM UTILIZING THE TPM WILL
BECOME INACCESSIBLE IF TPM OWNERSHIP IS CLEARED.
Recovery procedures may allow the migratable keys to be recovered and
might restore access to encrypted data. (Review the Recovery
Procedures for detailed instructions).
Follow the steps below to clear the TPM to transfer ownership of the platform to
a new owner.
1. Observe the precaution in the WARNING above before opening the system
case.
2. Move the BIOS configuration jumper on the board to pins 2-3.
3. Restore power to the PC and power on.
4. System should automatically enter BIOS setup.
5. Use the arrow keys to select Clear Trusted Platform Module,
press <Enter>.
6. Select Yes and press <Enter>.
7. Press the <F10> key to save and exit, and press Y.
8. Power off the system.
9. Review the precaution in the WARNING above.
10. Restore the configuration jumper on the board to pins 1-2.
When cleared, the TPM module is disabled by default.
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Support Links
• For assistance with the STMicroelectronics* Trusted Platform Module
visit: http://www.st.com
• For assistance with the Wave System* EMBASSY* Trusted Suite visit:
http://www.wave.com/support/ets.html
• For additional information about TPM and enhancing PC security, visit:
https://www.trustedcomputinggroup.org
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