METHOD FOR THE TRANSMISSION OF MANAGEMENT MESSAGES FROM A MANAGEMENT CENTRE TO A PLURALITY OF MULTIMEDIA UNITS

摘要

The method involves separating a set of security modules (SC) of multimedia units, into two groups (GR1, GR2). The security module groups have respective configurations of security units, where the configuration of the group (GR1) is different from the configuration of the group (GR2). The configurations have equal security levels, and are defined by a specific global encryption key.