A Public-Key Black-Box Traitor Tracing Scheme with Sublinear Ciphertext Size Against Self-Defensive Pirates.

Tatsuyuki Matsushita Hideki Imai A Public-Key Black-Box Traitor Tracing Scheme with Sublinear Ciphertext Size Against Self-Defensive Pirates. 260-275 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=3329&spage=260 2004 conf/asiacrypt/2004 ASIACRYPT db/conf/asiacrypt/asiacrypt2004.html#MatsushitaI04