Title :
Flexible chipset pairing — No restrictions on use of smartcards in secure chip based CAS
Author :
Lee, Hoonjung ; Son, Junggab ; Oh, Heekuck
Author_Institution :
Dept. of Comput. Sci. & Eng., Hanyang Univ., Ansan, South Korea
Abstract :
In this paper, we propose a new key distribution scheme for the flexible chipset pairing. Chipset pairing is the system that smartcard outputs encrypted CW (Control Word) to the STB, and the STB decrypts an encrypted CW by using the embedded secure chip. The drawback of this chipset pairing is that one smartcard is able to use for only one specified STB since it is the system using the STB bound to a smartcard. Our proposed scheme overcomes a drawback of current chipset pairing by using CRT (Chinese Remainder Theorem). To be specific, with this scheme, one smartcard can be used for multiple STBs, not only single, and apply to current chipset pairing without great changes.
Keywords :
cryptography; digital television; smart cards; telecommunication security; CAS; CRT; STB; chinese remainder theorem; control word; embedded secure chip; flexible chipset pairing; smartcard outputs encrypted CW; smartcards; Broadcasting; Cloning; Computer hacking; Cryptography; Digital TV; Electronic countermeasures; Smart cards;
Conference_Titel :
Consumer Electronics (ICCE), 2011 IEEE International Conference on
Conference_Location :
Las Vegas, NV
Print_ISBN :
978-1-4244-8711-0
DOI :
10.1109/ICCE.2011.5722934
