Circumvention of copyright protection systems

WIPO Copyright Treaty (1996 version)
Article 11
Obligations concerning Technological Measures 
Contracting Parties shall provide adequate legal protection and effective legal remedies against the circumvention of effective technological measures that are used by authors in connection with the exercise of their rights under this Treaty or the Berne Convention and that restrict acts, in respect of their works, which are not authorized by the authors concerned or permitted by law.

This creates that : 
(US) DMCA (Digital Millenium Copyright Act)
Multiple cases : bnetd, DeCSS, Elcomsoft
(EUROPE) EUCD (European Copyright Directive) (2001/29/CE)
 Application in the national law for November 2002
Conflicting with the Directive regarding the reverse engineering for interoperability	
(fair-use issue, computer science research, cryptography...)