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- W1571147132 abstract "A broadcast encryption system allows a center to communicate securely over a broadcast channel with selected sets of users. Each time the set of privileged users changes, the center enacts a protocol to establish a new broadcast key that only the privileged users can obtain, and subsequent transmissions by the center are encrypted using the new broadcast key. We study the inherent trade-off between the number of establishment keys held by each user and the number of transmissions needed to establish a new broadcast key. For every given upper bound on the number of establishment keys held by each user, we prove a lower bound on the number of transmissions needed to establish a new broadcast key. We show that these bounds are essentially tight, by describing broadcast encryption systems that come close to these bounds." @default.
- W1571147132 created "2016-06-24" @default.
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- W1571147132 date "1998-01-01" @default.
- W1571147132 modified "2023-10-14" @default.
- W1571147132 title "Combinatorial bounds for broadcast encryption" @default.
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- W1571147132 doi "https://doi.org/10.1007/bfb0054150" @default.
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