International Association for Cryptologic Research

International Association
for Cryptologic Research

IACR News item: 19 April 2015

Sumit Chakraborty
ePrint Report ePrint Report
Abstract: Broadcast or multicast is one of the most fundamental

concepts in data communication and distributed cryptography. A

central entity wishes to broadcast a secret data stream to a

dynamically changing privileged subset of recipients in such a

way that non-members of the privileged class cannot learn the

secret. This work presents an Adaptively Secure Broadcast

Algorithm (ASBA) based on threats analytics and case based

reasoning. It defines the security intelligence of an adaptively

secure broadcast comprehensively with a novel concept. It

recommends a set of intelligent model checking moves for the

verification of security intelligence of broadcasting mechanism.

The algorithm is analyzed from the perspectives of security

intelligence, communication complexity, computational

intelligence and efficiency of mechanism. The computational

intelligence is associated with the complexity of broadcast

scheduling, verification of security intelligence of broadcasting

system, key management strategies and payment function

computation. The cost of communication depends on number of

agents and subgroups in the broadcasting group and complexity of

data. The algorithm is applicable to the analysis of intelligent

mechanisms in static and dynamic networks, auction or

combinatorial auction for e-market, digital content distribution

through computational advertising, cloud computing, radio and

digital TV broadcast, SCADA and sensor networks.

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