Communications device with secure data path processing agents
Secure device data records (DDRs) are provided. In some embodiments, a system for secure DDRs includes a processor of a wireless communication device for wireless communication with a wireless network, in which the processor is configured with a secure execution environment, and in which the secure execution environment is configured to: monitor service usage of the wireless communication device with the wireless network; and generate a plurality of device data records of the monitored service usage of the wireless communication device with the wireless network, in which each device data record is associated with a unique sequence order identifier; and a memory coupled to the processor and configured to provide the processor with instructions. In some embodiments, the secure execution environment is located in an application processor, in a modem processor, and/or in a subscriber identity module (SIM).
1. A communications device comprising:
a wide area network port configured to connect the communications device to a wide area network;
a secure memory;
a secure execution environment configured to be inaccessible to a user application software; and
a secure data path processing agent configured to:
execute in the secure execution environment;
generate a unique identifier for communication to a network element in the wide area network;
store the unique identifier in the secure memory;
generate a data record;
associate the unique identifier with the data record; and
send the unique identifier to the network element over a trusted communication link between the secure data path processing agent and the network element.
2. The communications device of claim 1 , wherein the secure data path processing agent includes a device data record mailbox, wherein the device data record mailbox is configured to relay the data record to an agent outside of the secure execution environment for transmission to the network element.
3. The communications device of claim 1 , further comprising:
a subscriber identity module (SIM), wherein at least a portion of the SIM is within the secure execution environment.
4. The communications device of claim 3 , wherein the secure data path processing agent resides on the SIM.
5. The communications device of claim 4 , wherein the secure data path processing agent includes a data path security verifier.
6. The communications device of claim 1 , further comprising:
an applications processor unit within the secure execution environment.
7. The communications device of claim 6 , wherein the secure data path processing agent resides within the applications processor unit.
8. The communications device of claim 7 , wherein the secure data path processing agent includes a data path security verifier in a wireless modem chipset of the communications device.
9. The communications device of claim 8 , wherein the data path security verifier restricts network access to allow only monitored device data communications activity.
10. A method for use by a communications device including a wide area network port configured to connect the communications device to a wide area network, and further including a secure memory, a secure execution environment configured to be inaccessible to a user application software, and a secure data path processing agent, the method comprising:
executing the secure data path processing agent in the secure execution environment;
generating, by the secure data path processing agent, a unique identifier for communication to a network element in the wide area network;
storing, by the secure data path processing agent, the unique identifier in the secure memory;
generating, by the secure data path processing agent, a data record;
associating, by the secure data path processing agent, the unique identifier with the data record; and
sending, by the secure data path processing agent, the unique identifier to the network element over a trusted communication link between the secure data path processing agent and the network element.
11. The method of claim 10 , wherein the secure data path processing agent includes a device data record mailbox, and wherein the method further comprises:
relaying, using the device data record mailbox, the data record to an agent outside of the secure execution environment for transmission to the network element.
12. The method of claim 10 , wherein the communications device further includes a subscriber identity module (SIM), and wherein at least a portion of the SIM is within the secure execution environment.
13. The method of claim 12 , wherein the secure data path processing agent resides on the SIM.
14. The method of claim 13 , wherein the secure data path processing agent includes a data path security verifier.
15. The method of claim 10 , wherein the communications device further includes an applications processor unit within the secure execution environment.
16. The method of claim 15 , wherein the secure data path processing agent resides within the applications processor unit.
17. The method of claim 16 , wherein the secure data path processing agent includes a data path security verifier in a wireless modem chipset of the communications device.
18. The method of claim 17 , further comprising:
restricting, using the data path security verifier, network access to allow only monitored device data communications activity.