[rumori] Professor warns of threat to free speech

From: Every Man (every.manATpressthebutton.com)
Date: Tue May 22 2001 - 13:06:59 PDT


By Lisa M. Bowman
Special to CNET News.com
May 17, 2001, 5:00 p.m. PT

STANFORD, Calif.--Edward Felten, the Princeton University professor who was
muzzled from giving a speech about cracking digital watermarks, warned
Thursday that if it happened to him, it could happen to you.

Speaking in a packed Stanford University lecture hall, Felten said he
thinks he will eventually win the rights to publish his work, which so far
has been quashed by the entertainment industry.

"The music industry was seeking control over what we could write in our
paper," Felten said. "That's a dangerous precedent."

The Secure Digital Music Initiative (SDMI)--a group working to protect
digital material from theft--issued a hacking challenge last year, asking
participants to try to break some watermark technology it was considering
using. A digital watermark places a unique bit of code into a file that is
theoretically difficult to remove without damaging the quality of the sound
or image.

Felten entered the contest but withdrew after learning that contest rules
prohibited him from discussing his findings. Instead, he and his colleagues
set out to work on the project independently.

Shortly before he was scheduled to give a presentation last month detailing
how he and his colleagues cracked the watermarks, Felten buckled under
pressure from the SDMI, which told the academic team it risked violating
federal copyright laws if its findings were made public.

Once Felten backed down, though, the SDMI said it never intended to sue the
professor or restrict academic speech, an assertion many are questioning.

Felten wouldn't speculate Thursday about the next step in releasing his
watermark research. Although he didn't specifically explain how he cracked
some of the watermarks, he said that once someone determines how the
watermarks work it's easy to remove them.

"Given all of this, it's not clear that watermarks, at least in the style
that SDMI wanted to do it, can work at all," he said.

Felten also said computer scientists shouldn't be the only ones worried
about their speech being stifled.
"If it happened to us, it could happen to other disciplines as well," he
said. For example, he said in the future that a literature professor could
be prevented from giving an analysis of a book, in the same way his group
was prevented from discussing an analysis of technology.

Felten has been something of a techno-political activist in recent years.
As a government witness during the Microsoft trial, he testified that he
had designed a program that would remove the browser from Windows without
damaging the operating system. The software giant asserted the products
were so intertwined that it wasn't possible.

The programmer also took sides in the DeCSS case, a lawsuit brought by the
movie industry against a hacker publication for posting code that
theoretically could be used to crack DVD security. Felten was one of a
group of crackerjack programmers who signed on to a brief in favor of 2600
magazine. He and his colleagues argued that computer code is free speech
and should not be restrained.

Felten also testified during that trial, warning somewhat prophetically
that if the industry was going after hackers, he could be next.

Every Man every.manATpressthebutton.com
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