Your Federal Quarterly Tax Payments are due April 15th Get Help Now >>

The DMCA, DeCSS, Copyrights and the First Amendment by eux11083

VIEWS: 6 PAGES: 13

									The DMCA, DeCSS, Copyrights
   and the First Amendment
Universal Studios v. Reimerdes
 MPAA encrypts DVDs using the CSS
  algorithm
 2600, an online magazine, posts both source
  code of DeCSS and links to mirror pages.
 MPAA sues 2600 for copyright
  infringement
CSS Algorithm
Potential Attacks on CSS

 CSS uses a small 40 bit key

 Attack space on a movie file is 216

 Attack space on Disk Key is 225

 Attack using known player key is DeCSS
Streamcipher
 2 Linear Feedback Shift Register

 LFSR1 is 17 bits

 LFSR2 is 25 bits
Potential Attacks on CSS

 CSS uses a small 40 bit key

 Attack space on a movie file is 216

 Attack space on Disk Key is 225

 Attack using known player key is DeCSS
Universal Studios v. Reimerdes
 Encryption protects property, and under
  DMCA section 1201, anti-circumvention
  measures are illegal.
 Posting to the internet is illegal distribution
 Prohibiting owners from profiting from
  their work is infringement
Digital Millennium Copyright Act

 Prohibits the circumvention of encryption
  schemes designed to protect copyrighted
  works
 Creates prohibitions on devices designed to
  circumvent copy-protection mechanisms
Universal Studios v. Reimerdes
 Encryption protects property, and under
  DMCA section 1201, anti-circumvention
  measures are illegal.
 Posting to the internet is illegal distribution
 Prohibiting owners from profiting from
  their work is infringement
Fair Use
 Copyrighted material may be used without
  permission or compensation under some
  circumstances
 Parody, educational and archival uses
 The DVD encryption scheme prevents such
  uses
 The DMCA makes exemption for the
  exercise of fair use
Source Code as Speech
 Junger v Daley – Source code is a method
  of exchanging ideas and is thus protected
 Bernstein v. US Dept of State – instructions,
  technical information and manuals are
  functional but are still protected as speech
Source Code Takes Action

 2 kinds of speech - pure, and expressive
 Algorithm is an idea, an English description
  is still pure speech.
 An executable is a series of commands
  which cause a computer to perform an
  action.
 Source code falls between the two, but is
  closer to an executable than to English.
Conclusion
 The court finds in favor of the MPAA

 The DMCA was correctly applied

 Serious questions remain about the
  constitutionality of the DMCA

								
To top