Registered
RE-AUTHENTICATION APPARATUS AND METHOD IN DOWNLOADABLE CONDITIONAL ACCESS SYSTEM
- Inventors
-
Jeong Young Ho, Kwon Eun Jung, Lee Soo In, Kwon O Hyung
- Application No.
-
12692266 (2010.01.22)
- Publication No.
-
20110078444 (2011.03.31)
- Registration No.
- 8539236 (2013.09.17)
- Country
- UNITED STATES
- Project Code
-
09MR3300, The Development of Downloadable Conditional Access System,
Kwon O Hyung
- Abstract
- Provided is a re-authentication apparatus in a Downloadable Conditional Access System (DCAS), the re-authentication apparatus includes: a receiving unit to receive a key request message from a Secure Micro (SM); a determination unit to determine whether to perform re-authentication depending on downloading of SM client image; an identification unit to identify an SM identifier using the key request message, when the re-authentication is performed as a result of the determination; an extraction unit to retrieve previous session information corresponding to the SM identifier and to extract keying information about the previous session information; and an encryption unit to control an encryption key about the SM client image to be reused, the SM client image being encrypted in a previous session based on the previous session information using the keying information.
- KSP Keywords
- Conditional access system, Extraction unit, Re-authentication, conditional access, encryption Key