Identity management on a wireless device
A wireless device may perform a local authentication to reduce the traffic on a network. The local authentication may be performed using a local web server and/or a local OpenID provider (OP) associated with the wireless device. The local web server and/or local OP may be implemented on a security module, such as a smartcard or a trusted execution environment for example. The local OP and/or local web server may be used to implement a provisioning phase to derive a session key, associated with a service provider, from an authentication between the wireless device and the network. The session key may be reusable for subsequent local authentications to locally authenticate a user of the wireless device to the service provider.
1. A wireless device comprising a processor, a memory, and communication circuitry, the wireless device configured to connect to a communications network via the communication circuitry, the wireless device including computer-executable instructions stored in the memory of the wireless device which, when executed by the processor of the wireless device, perform operations comprising:
receiving a temporary key, wherein the temporary key is derived from a network authentication between the wireless device and a network entity;
generating, based on the temporary key, a session key associated with a service provider, wherein the session key is shared with the network entity, and wherein the session key is configured for use in a local authentication performed at the wireless device; and
storing the session key for use in the local authentication at the wireless device.
2. The wireless device of claim 1 , wherein the network authentication comprises an authentication and key agreement protocol.
3. The wireless device of claim 2 , wherein the authentication and key agreement protocol uses a shared secret between the wireless device and the network entity to derive the temporary key.
4. The wireless device of claim 1 , wherein the network authentication comprises a bootstrapping procedure.
5. The wireless device of claim 1 , wherein the session key is generated using an internal key derivation function.
6. The wireless device of claim 1 , wherein the wireless device further comprises a security module, the operations further comprising at least one of generating or storing the session key using the security module.
7. The wireless device of claim 1 , wherein the network entity comprises an OpenID Server Function and the service provider comprises an OpenID Relying Party.
8. The wireless device of claim 1 , the operations further comprising:
receiving a network authentication key associated with the network authentication, from the network entity; and
deriving the temporary key from the network authentication key.
9. A wireless device comprising a processor, a memory, and communication circuitry, the wireless device configured to connect to a communications network via the communication circuitry, the wireless device including computer-executable instructions stored in the memory of the wireless device which, when executed by the processor of the wireless device, perform operations comprising:
receiving an association handle from a service provider, wherein the association handle indicates that the service provider has performed an association with a network entity;
receiving authentication information associated with a user of the wireless device;
locally verifying the authentication information at the wireless device;
generating a signature key based on the association handle and a session key associated with the service provider, wherein the session key is derived from a network authentication between the network entity and the wireless device, and wherein the session key is configured for use in performing a local authentication at the wireless device; and
signing an identity assertion, using the signature key, to indicate that the wireless device has locally verified the authentication information.
10. The wireless device of claim 9 , wherein the session key is shared with the network entity for validation of the identity assertion.
11. The wireless device of claim 9 , wherein the session key is configured for use in a plurality of local authentications at the wireless device.
12. The wireless device of claim 9 , wherein the association handle is received in an authentication request from the service provider.
13. The wireless device of claim 9 , wherein the network entity comprises an OpenID Server Function, and the service provider comprises an OpenID Relying Party.
14. The wireless device of claim 9 , wherein the identity assertion is configured to be validated at the network entity using the signature key.
15. The wireless device of claim 9 , wherein the wireless device comprises a security module, and wherein the session key is generated using the security mode and stored on the security module.
16. The wireless device of claim 9 , wherein the wireless device comprises a local web server, and wherein the authentication information is received via the local web server.
17. The wireless device of claim 9 , wherein the association handle is received via a local DNS lookup performed by an application on the wireless device.
18. The wireless device of claim 9 , wherein the session key is derived from a network authentication key associated with the network entity.
19. The wireless device of claim 9 , the operations further comprising:
communicating, via a local link, with another wireless device that has requested access to services from the service provider;
receiving, via the local link, a request for authentication from the other wireless device; and
sending the signed identity assertion to the other wireless device.