Group admission control apparatus and methods
First Claim
Patent Images
1. A method for admission control for a group, comprising the steps of:
- possessing a key; and
providing proof of possession of said key to verify membership of said group.
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Accused Products
Abstract
The present invention uses a group key management scheme for admission control while enabling various conventional approaches toward establishing peer-to-peer security. Various embodiments of the invention can provide peer-to-peer confidentiality and authenticity, such that other parties, such as group members, can not understand communications not intended for them. A group key may be used in combination with known unicast security protocols to establish, implicitly or explicitly, proof of group membership together with bi-lateral secure communication.
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Citations
45 Claims
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1. A method for admission control for a group, comprising the steps of:
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possessing a key; and
providing proof of possession of said key to verify membership of said group. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method for admission control for a group, comprising the steps of:
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possessing a key; and
showing said key as proof of membership of said group.
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8. A method for admission control for a group having a group key, comprising the steps of:
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sending a first key to a first party;
sending a second key to said first party; and
sending said first key to a plurality of members of said group;
wherein said first key is an update of said group key and said second key is unique to said first party. - View Dependent Claims (9, 10, 11)
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12. A method for admission control for a group having a group key, comprising the steps of:
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sending a first key to a first party; and
sending a second key to said first party;
wherein said first key is a hashed key of said group key and said second key is unique to said first party. - View Dependent Claims (13, 14, 15)
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16. An electronic device having an admission control facility for controlling access to a group using a group key, said admission control facility comprising:
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means for receiving a request from a first party for admission to said group; and
means for sending a first key and a second key, wherein said first key is an update of said group key and is sent to a plurality of members of said group and wherein said second key is unique to said first party and is sent exclusively to said first party. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24)
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25. An electronic device, comprising:
an admission control facility for controlling access to a group using a group key, said admission control facility comprising;
means for receiving a request from a first party for admission to said group; and
means for sending a first key and a second key, wherein said first key is a hashed key of said group key and is sent to said first party and wherein said second key is unique to said first party and is sent exclusively to said first party. - View Dependent Claims (26, 27, 28)
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29. An electronic device, comprising:
an admission control facility for controlling access to a group using a group key, said admission control facility comprising;
a receiver adapted to receive a request from a first party for admission to said group; and
a sender adapted to send a first key and a second key, wherein said first key is an update of said group key and is sent to a plurality of members of said group and wherein said second key is unique to said first party and is sent exclusively to said first party. - View Dependent Claims (30, 31, 32, 33, 34, 35, 36, 37)
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38. An electronic device, comprising:
an admission control facility for controlling access to a group using a group key, said admission control facility comprising;
a receiver adapted to receive a request from a first party for admission to said group; and
a sender adapted to send a first key and a second key, wherein said first key is a hashed key of said group key and is sent to said first party and wherein said second key is unique to said first party and is sent exclusively to said first party. - View Dependent Claims (39, 40, 41)
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42. An electronic device holding computer-executable instructions for performing a method, comprising the steps of:
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sending a first key to a first party;
sending a second key to said first party; and
sending said first key to a plurality of members of said group;
wherein said first key is an update of said group key and said second key is unique to said first party.
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43. An electronic device holding computer-executable instructions for performing a method, comprising the steps of:
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sending a first key to a first party; and
sending a second key to said first party;
wherein said first key is a hashed key of said group key and said second key is unique to said first party.
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44. A storage medium holding computer-executable instructions for performing a method, comprising the steps of:
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sending a first key to a first party;
sending a second key to said first party; and
sending said first key to a plurality of members of said group;
wherein said first key is an update of said group key and said second key is unique to said first party.
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45. A storage medium holding computer-executable instructions for performing a method, comprising the steps of:
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sending a first key to a first party; and
sending a second key to said first party;
wherein said first key is a hashed key of said group key and said second key is unique to said first party.
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Specification