Dark Reading is part of the Informa Tech Division of Informa PLC

This site is operated by a business or businesses owned by Informa PLC and all copyright resides with them.Informa PLC's registered office is 5 Howick Place, London SW1P 1WG. Registered in England and Wales. Number 8860726.

Perimeter

2/20/2009
05:20 PM
Rob Enderle
Rob Enderle
Commentary
50%
50%

TCG Drive Encryption Goes Mainstream

The Trusted Computing Group's newly released specifications for the management of hard drive encryption are now being adopted by a number of vendors -- Seagate arguably the most prominent, but also including Fujitsu, Toshiba, Hitachi, Wave Systems, CryptoMill, WinMagic, Secude, and McAfee.

The Trusted Computing Group's newly released specifications for the management of hard drive encryption are now being adopted by a number of vendors -- Seagate arguably the most prominent, but also including Fujitsu, Toshiba, Hitachi, Wave Systems, CryptoMill, WinMagic, Secude, and McAfee.These specifications (PDF) focus on how the drives are managed by host-side applications, and should provide the dual benefit of increased performance with encrypted drives, driving a wider implementation of this security technology. What this enables is vastly lowered barriers to entry for related products because the standards allow hardware-encrypted drives from a wide variety of conforming vendors to be plug-compatible.

This, in turn, has the dual benefit of lowering costs through competitive standardization and increasing adoption of the related technology. The National Security Agency, which participated in this effort, has issued a letter of acceptance for one of the participating vendors, demonstrating that it's also behind this effort.

Standard Advantages Advantages to this TCG Hard Drive encryption approach include improved setup time, enhanced scalability, interoperability, increased security over keys, portability, and platform breadth. Let's take a look at each.

Setup Time: With this class of encryption product, data is encrypted from the time the drive is manufactured. Turning on the security is nearly instantaneous because the drive is already encrypted. With other forms of encryption, the drive must first become encrypted when the feature is turned on, requiring the encryption of the then-resident drive contents (which can be very time-consuming).

Scalability: For more traditional CPU-based solutions, when multiple drives are introduced, they will bottleneck once the capacity of the CPU and chipset is reached. With drive- based encryption, the restricting function is handled by the drive and scales up in performance with each drive added.

Interoperability: Chipsets vary greatly between processor vendors, and have since the late '90s. Processor/chipset-based approaches tend to tie the drives to the chipset and processor solution, and have difficulty moving between solutions (if at all) without performance impact. The TCG approach is plug-compatible across vendors, virtually eliminating this problem.

Key Security: With CPU/chipset solutions, the keys for each hard drive need to be managed by the host-side application. They are generally stored in memory so they can be made accessible to the CPU. This leaves the keys vulnerable to kernel-level attacks and others, like the Princeton cold-boot attack. With the TCG method, the keys are sent to the hard drive during the preboot -- typically using a security-hardened application. This makes them more difficult to compromise.

Portability: Drives based on the TCG specification can be moved between PCs because, unlike other methods, there is no system-level dependency. This is because the encryption engine is inside the drive and not dependent on the unique aspects of any one PC configuration.

RAID Performance: Chipset/CPU configurations are particularly painful on servers or multiple-drive desktops because they shift the encryption load to the processor and chipset, which generally is already running at a high-level load in such a configuration. That typically leads to a significant bottleneck.

Wrapping Up The TCG's new specifications, as well as drives from the vendors now supporting them, have been needed for some time and address a number of high-performance, interoperability, and security concerns. This change represents a significant improvement in an industry (storage) that doesn't have many of them in any given year.

-- Rob Enderle is president and founder of Enderle Group. Special to Dark Reading.

 

Recommended Reading:

Comment  | 
Print  | 
More Insights
Comments
Newest First  |  Oldest First  |  Threaded View
COVID-19: Latest Security News & Commentary
Dark Reading Staff 8/14/2020
Lock-Pickers Face an Uncertain Future Online
Seth Rosenblatt, Contributing Writer,  8/10/2020
Hacking It as a CISO: Advice for Security Leadership
Kelly Sheridan, Staff Editor, Dark Reading,  8/10/2020
Register for Dark Reading Newsletters
White Papers
Video
Cartoon
Current Issue
7 New Cybersecurity Vulnerabilities That Could Put Your Enterprise at Risk
In this Dark Reading Tech Digest, we look at the ways security researchers and ethical hackers find critical vulnerabilities and offer insights into how you can fix them before attackers can exploit them.
Flash Poll
The Changing Face of Threat Intelligence
The Changing Face of Threat Intelligence
This special report takes a look at how enterprises are using threat intelligence, as well as emerging best practices for integrating threat intel into security operations and incident response. Download it today!
Twitter Feed
Dark Reading - Bug Report
Bug Report
Enterprise Vulnerabilities
From DHS/US-CERT's National Vulnerability Database
CVE-2020-17475
PUBLISHED: 2020-08-14
Lack of authentication in the network relays used in MEGVII Koala 2.9.1-c3s allows attackers to grant physical access to anyone by sending packet data to UDP port 5000.
CVE-2020-0255
PUBLISHED: 2020-08-14
** REJECT ** DO NOT USE THIS CANDIDATE NUMBER. ConsultIDs: CVE-2020-10751. Reason: This candidate is a duplicate of CVE-2020-10751. Notes: All CVE users should reference CVE-2020-10751 instead of this candidate. All references and descriptions in this candidate have been removed to prevent accidenta...
CVE-2020-14353
PUBLISHED: 2020-08-14
** REJECT ** DO NOT USE THIS CANDIDATE NUMBER. ConsultIDs: CVE-2017-18270. Reason: This candidate is a duplicate of CVE-2017-18270. Notes: All CVE users should reference CVE-2017-18270 instead of this candidate. All references and descriptions in this candidate have been removed to prevent accidenta...
CVE-2020-17464
PUBLISHED: 2020-08-14
** REJECT ** DO NOT USE THIS CANDIDATE NUMBER. ConsultIDs: none. Reason: This candidate was withdrawn by its CNA. Further investigation showed that it was not a security issue. Notes: none.
CVE-2020-17473
PUBLISHED: 2020-08-14
Lack of mutual authentication in ZKTeco FaceDepot 7B 1.0.213 and ZKBiosecurity Server 1.0.0_20190723 allows an attacker to obtain a long-lasting token by impersonating the server.