"Sec. 103(f) of the DMCA (17 U.S.C. § 1201 (f)) says that if you legally obtain a program that is protected, you are allowed to reverse-engineer and circumvent the protection to achieve the ability the interoperability of computer programs (i.e., the ability to exchange and make use of information)."
Though I wouldn't want to have to test that in court. IANAL.
Though I wouldn't want to have to test that in court. IANAL.