PUBLIC KEY ENCRYPTION FOR GROUPS
First Claim
1. A system for public key encryption for groups, the system comprising:
- a user, anda group comprised of a group leader and at least one group member, wherein the group has a single public key for the group and an individual private key for each group member, anda message received by the group from the user encrypted using the group public key.
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Accused Products
Abstract
A system is comprised of a user and a group, wherein the group is comprised of a group leader and a group of M members where M is equal to or greater than one. The group leader generates a group public key and a group leader “master” private key. The group leader creates a personalized watermarked or decryption key, also referred to as an individual private key, for each group member. The individual private key uniquely identifies each group member. The group leader distributes the individual private keys to each of the group members. Each group member receives from a user a message encrypted using the group public key. Each of the group members uses its individual private key to decrypt the encrypted message sent by the user to the group.
45 Citations
14 Claims
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1. A system for public key encryption for groups, the system comprising:
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a user, and a group comprised of a group leader and at least one group member, wherein the group has a single public key for the group and an individual private key for each group member, and a message received by the group from the user encrypted using the group public key. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method for public key encryption for groups, the method comprising:
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generating a group public key and a group leader private key by a group leader of a group having at least one group member, creating an individual private key for each group member by the group leader, distributing the individual private key to each group member by the group leader, receiving by the group from a user a message encrypted using the group public key, and decrypting the encrypted message received by the group from the user by at least one group member using its individual private key, independently of the other group members. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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Specification