The present invention relates to a method for handling or transmitting
encrypted user data objects. According to such method, a data preparation
component (D) of a data preparation system provides user data objects.
The data preparation component first encrypts a user data object that has
been prepared. It then determines a checksum of the encrypted user data
object and creates a container data object (DCF), in which the encrypted
user data object and the determined checksum are provided. The container
data object is subsequently transmitted to a first telecommunications
device (A). Preferably, in order to use the encrypted user data object,
the data preparation component (D) transmits descriptive information
(BI1) containing a description of the possible usage rights for the
encrypted user data object to the telecommunications device (A). After
the selection of a specific rights object (RO), the data preparation
device first transmits a confirmation object (DCFV) to the
telecommunication device in order to verify the compatibility of the
desired rights object and the encrypted user data object provided in the
telecommunication device and if said verification is successful,
subsequently transmits the rights object (RO) to the telecommunications
device (A).