DISTRIBUTION OF GROUP CRYPTOGRAPHY MATERIAL IN A MOBILE IP ENVIRONMENT
First Claim
1. A method, comprising:
- receiving a Mobile IP registration request from a group member, the group member being a Mobile Node;
generating a mobility binding for the group member that associates the group member with a care-of address, wherein the group member is a member of one or more groups;
generating a Mobile IP registration reply, the Mobile IP registration reply identifying one or more key servers, each of the one or more key servers serving at least one of the one or more groups and being adapted for distributing group cryptography material to members of each group that is served by the corresponding key server; and
sending the Mobile IP registration reply to the group member, thereby enabling the group member to obtain group cryptography material for at least one of the one or more groups from at least one of the one or more key servers to enable the group member to use the group cryptography material to securely communicate with other group members.
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Accused Products
Abstract
In one embodiment, a Home Agent receives a Mobile IP registration request from a group member, where the group member is a Mobile Node. The Home Agent generates a mobility binding for the group member that associates the group member with a care-of address, wherein the group member is a member of one or more groups. The Home Agent generates a Mobile IP registration reply, where the Mobile IP registration reply identifies one or more key servers. Each of the one or more key servers serves at least one of the one or more groups and is adapted for distributing group cryptography material to members of each group that is served by the corresponding key server. The Home Agent sends the Mobile IP registration reply to the group member, thereby enabling the group member to obtain cryptography material for at least one of the one or more groups from at least one of the one or more key servers to enable the group member to use the cryptography group material to securely communicate with other group members.
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Citations
25 Claims
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1. A method, comprising:
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receiving a Mobile IP registration request from a group member, the group member being a Mobile Node; generating a mobility binding for the group member that associates the group member with a care-of address, wherein the group member is a member of one or more groups; generating a Mobile IP registration reply, the Mobile IP registration reply identifying one or more key servers, each of the one or more key servers serving at least one of the one or more groups and being adapted for distributing group cryptography material to members of each group that is served by the corresponding key server; and sending the Mobile IP registration reply to the group member, thereby enabling the group member to obtain group cryptography material for at least one of the one or more groups from at least one of the one or more key servers to enable the group member to use the group cryptography material to securely communicate with other group members. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An apparatus, comprising:
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means for receiving a Mobile IP registration request from a group member, the group member being a Mobile Node; means for generating a mobility binding for the group member that associates the group member with a care-of address, wherein the group member is a member of one or more groups; means for generating a Mobile IP registration reply, the Mobile IP registration reply identifying one or more key servers, each of the one or more key servers serving at least one of the one or more groups and being adapted for distributing group cryptography material to members of each group that is served by the corresponding key server; and means for sending the Mobile IP registration reply to the group member, thereby enabling the group member to obtain group cryptography material for at least one of the one or more groups from at least one of the one or more key servers to enable the group member to use the shared key to secure communications with other group members.
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14. An apparatus, comprising:
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a processor; and a memory, at least one of the processor or the memory being adapted for; receiving a Mobile IP registration request from a group member, the group member being a Mobile Node; generating a mobility binding for the group member that associates the group member with a care-of address, wherein the group member is a member of one or more groups; generating a Mobile IP registration reply, the Mobile IP registration reply identifying one or more key servers, each of the one or more key servers serving at least one of the one or more groups and being adapted for distributing group cryptography material to members of each group that is served by the corresponding key server; and sending the Mobile IP registration reply to the group member, thereby enabling the group member to obtain group cryptography material for at least one of the one or more groups from at least one of the one or more key servers to enable the group member to use the shared key to secure communications with other group members.
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15. An apparatus, comprising:
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a processor; and a memory, at least one of the processor or the memory being adapted for; receiving a Mobile IP registration request from a key server, the key server being a Mobile Node; generating a mobility binding for the key server that associates the key server with a care-of address, the key server serving one or more groups and being adapted for distributing group cryptography material to members of each of the one or more groups that is served by the key server; generating a Mobile IP registration reply; and sending the Mobile IP registration reply to the key server.
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16. A method, comprising:
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receiving a Mobile IP registration request from a key server, the key server being a Mobile Node; generating a mobility binding for the key server that associates the key server with a care-of address, the key server serving one or more groups and being adapted for distributing group cryptography material to members of each of the one or more groups that is served by the key server; generating a Mobile IP registration reply; and sending the Mobile IP registration reply to the key server. - View Dependent Claims (17, 18, 20, 21, 22, 23, 24, 25)
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19. The method as recited in 16, wherein the Mobile IP registration request identifies each of the one or more groups that is served by the key server.
Specification