It is not. Section 1201 of the DMCA specifiys:
"No person shall circumvent a technological measure that effectively controls access to a work protected under this title."
There is an exception to users whose ability to make legal use of the protected material is impeded, but only after the Librarian of Congress rules that the given type of user of the given type of work qualifies for the above exception.
The exception mentioned above also, explicitly, does not apply to the following provision:
"No person shall manufacture, import, offer to the public, provide, or otherwise traffic in any technology, product, service, device, component, or part thereof, that--
`(A) is primarily designed or produced for the purpose of circumventing a technological measure that effectively controls access to a work protected under this title;
`(B) has only limited commercially significant purpose or use other than to circumvent a technological measure that effectively controls access to a work protected under this title; or
`(C) is marketed by that person or another acting in concert with that person with that person's knowledge for use in circumventing a technological measure that effectively controls access to a work protected under this title."
