Researcher: DRM technology fails in practice

DRM technology has deep flaws despite the hope of content providers that it will deter illegal file sharing, according to a computer security researcher.

Digital rights management (DRM) technology has deep flaws despite the hope of content providers that encrypted files will deter illegal file sharing, a computer security researcher said Monday.

DRM is a catch-all term for a variety of methods used to limit content sharing. Techniques include digital encryption of songs and encoded limits on the number of times content can be accessed. But DRM technologies are far from foolproof, and the ones developed so far have been easily circumvented by adept hackers, said Ian Brown, a senior research manager at the Cambridge-MIT Institute in England.

DRM won't protect the music and film industries, which have spent the last decade lobbying for new laws to protect their content but neglected trying to find better ways to monetize their offerings, he said. Bands such as U2 and the Grateful Dead use their music more as a promotional tool, relying on touring and merchandise for revenue, he said.

"It's the business models that need changing, not the technology," said Brown, whose doctoral thesis in part covered DRM technologies. He spoke at the Changing Media Summit in London.

DRM technology is simple but making it work is difficult, Brown said. The data has to be decrypted to be used, and the "analog hole" remains -- the ability for determined bootleggers to use a microphone or regular video camera to record content for posting on file-sharing networks.

So-called "watermarks" -- instructions regulating the usage of the file that are invisible to the users -- can be removed by a determined programmer, allowing them to post a file to a P-to-P (peer to peer) network, Brown said. The algorithms used for watermarks are still "primitive," Brown said.

DRM technologies may be most effective for time-based events where encryption would only have to hold for a short period, such as the broadcast of a live sports event, Brown said.

The progression of DRM technology is closely watched. Music and film industry officials argue that DRM is crucial to preserving revenue in the face of piracy. Consumer advocates say DRM technologies can be too restrictive for consumers who legitimately paid for content and want to share it on several devices.

"Fundamentally, it's an antiuser technology," Brown said. "It's a technology that allows content owners to provide data to their customers with restrictions on how they can use it that aren't justified by copyright law.

Microsoft is incorporating features into its next-generation OS, Windows Vista, to take advantage of DRM capabilities of TPM (trusted platform module) chipsets. TPM chipsets have the capability to store the keys, passwords or certificates attached to DRM-enabled files and only allow decoding by authorized users.

France is debating legislation that would require companies developing DRM technologies to provide enough information so other companies can make interoperable systems. Apple has lashed out at the measure, saying it will encourage music piracy.

Recommended

Keep up with the latest tech news, reviews and previews by subscribing to the Good Gear Guide newsletter.

Jeremy Kirk

IDG News Service

Comments

Comments are now closed.

Most Popular Reviews

Follow Us

Best Deals on GoodGearGuide

Shopping.com

Latest News Articles

Resources

GGG Evaluation Team

Kathy Cassidy

STYLISTIC Q702

First impression on unpacking the Q702 test unit was the solid feel and clean, minimalist styling.

Anthony Grifoni

STYLISTIC Q572

For work use, Microsoft Word and Excel programs pre-installed on the device are adequate for preparing short documents.

Steph Mundell

LIFEBOOK UH574

The Fujitsu LifeBook UH574 allowed for great mobility without being obnoxiously heavy or clunky. Its twelve hours of battery life did not disappoint.

Andrew Mitsi

STYLISTIC Q702

The screen was particularly good. It is bright and visible from most angles, however heat is an issue, particularly around the Windows button on the front, and on the back where the battery housing is located.

Simon Harriott

STYLISTIC Q702

My first impression after unboxing the Q702 is that it is a nice looking unit. Styling is somewhat minimalist but very effective. The tablet part, once detached, has a nice weight, and no buttons or switches are located in awkward or intrusive positions.

Latest Jobs

Don’t have an account? Sign up here

Don't have an account? Sign up now

Forgot password?