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A Transmission-Efficient Broadcast Encryption System Based on Secret Sharing Method
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  • Journal title : Journal of Broadcast Engineering
  • Volume 21, Issue 3,  2016, pp.412-424
  • Publisher : The Korean Institute of Broadcast and Media Engineers
  • DOI : 10.5909/JBE.2016.21.3.412
 Title & Authors
A Transmission-Efficient Broadcast Encryption System Based on Secret Sharing Method
Lee, Jae Hwan; Park, Jong Hwan;
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 Abstract
Broadcast encryption (BE) is a cryptographic primitive that enables a sender to broadcast a message to a set of receivers in a secure channel. The efficiency of BE is measured by three factors: ciphertext transmission cost, user storage cost, and computational cost for decryption. In general, BE is applied to the environments where a large number of receivers should be accommodated, so that the transmission cost is considered as being the most important factor. In this paper, we suggest a new BE system, using Shamir`s secret sharing method, which considerable reduces the transmission cost. In comparison to the previous Subset Difference (SD) system, the transmission size of our BE is longer until , but get shorter when for number of revoked users and n number of total users. We show that the advantage can be achieved at the slight expense of both the storage and computational costs.
 Keywords
broadcast encryption;secret sharing;
 Language
Korean
 Cited by
 References
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