SENDING PROTECTED DATA IN A COMMUNICATION NETWORK VIA AN INTERMEDIATE UNIT

摘要

A method and apparatus for sending protected data from a sender unit (8) to a receiver unit (10) via an intermediate unit (9). A Transfer Init message that contains a ticket associated with the receiver unit (10) is sent from the intermediate unit (9) to the sender unit (8). The intermediate unit (9) then receives a transfer response message from the sender unit (8), and also data which has been protected using at least one security key associated with the ticket and obtained from a Key Management Server (11). A message is sent to th receiver unit, the message including information required for security processing of the protected data. The protected data is then sent to the receiver unit (10), allowing the receiver unit to access the protected data.