2Tomas Sander. Good Times for Digital Rights Management? In: Proceedings of the 5^th International Conference on Financial Cryptography. Lecture Notes in Computer Science 2339, Berlin: Springer-Verlag, 2002. 55-65.
3Microsoft Corporation. Architecture of Windows Media Rights Manager. http://www. microsoft. com/windows/windowsmedia/howto/articles/drmarchiteeture.aspx.
5Davis R. The Digital Dilemma. Communications of the ACM, 2001 , 44(2) : 77-83.
6Feigenbaum J, Freedman M J, Tomas Sander, et al. Privacy Engineering for Digital Rights Management Systems. In:Proceedings of the 2001 ACM Workshop on Security and Privacy in Digital Rights Management. Berkeley: Springer-Verlag, 2002. 76-105.
7Jay Munro. WPA. DBL-The Keeper of the Keys Windows Product Activation (WPA) for Windows XP. http://www. extremetech, com/article2/0,1558,1151566,00. asp.
8Shamir A. How to Share a Secret. Communications of the ACM, 1979, 22(11) : 612-613.
9William Rosenblatt, WiBiam Trippe, Stephen Mooney. Digital Rights Management: Business and Technology. NewYork: M&T Books, 2002.
10Aura T, Gollmann D. Software License Management with Smart Cards. In: Proceedings of the USENIX Workshop on Smart Card Technology. Chicago:USENIX Association, 1999. 75-85.