Security

Key Establishment and Pairing Management Protocol for Downloadable Conditional Access System Host Devices

Date Added: Apr 2010
Format: PDF

In this paper, the authors investigate the possible security threats to Downloadable Conditional Access System (DCAS) host devices. They then propose a DCAS Secure Micro (SM) and Transport Processor (TP) security protocol that counters identified security threats using a secure key establishment and pairing management scheme. The proposed protocol not only resists disclosed SM ID and TP ID threats and indirect connection between TA and TP threats, but also meets some desirable security attributes such as known key secrecy, perfect forward secrecy, key compromised impersonation, unknown key-share, and key control.