Donghyun Choi Sungkyu Cho Dongho Won Seungjoo Kim Protection Profile for Connected Interoperable DRM Framework. 320-332 2008 WISA http://dx.doi.org/10.1007/978-3-642-00306-6_24 conf/wisa/2008 db/conf/wisa/wisa2008.html#ChoiCWK08