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

fYear

2011

fDate

9-12 Jan. 2011

Firstpage

913

Lastpage

914

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Consumer Electronics (ICCE), 2011 IEEE International Conference on

Conference_Location

Las Vegas, NV

ISSN

2158-3994

Print_ISBN

978-1-4244-8711-0

Type

conf

DOI

10.1109/ICCE.2011.5722934

Filename

5722934