Broadcast steganography

Nelly Fazio, Antonio R. Nicolosi, Irippuge Milinda Perera

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

11 Scopus citations

Abstract

We initiate the study of steganography (BS), an extension of steganography to the multi-recipient setting. BS enables a sender to communicate covertly with a dynamically designated set of receivers, so that the recipients recover the original content, while unauthorized users and outsiders remain unaware of the covert communication. One of our main technical contributions is the introduction of a new variant of anonymous broadcast encryption that we term outsider-anonymous broadcast encryption with pseudorandom ciphertexts((oABE$). Our oABE$ construction achieves sublinear ciphertext size and is secure in the standard model. Besides being of interest in its own right, oABE$ enables an efficient construction of BS secure in the standard model against adaptive adversaries with sublinear communication complexity.

Original languageEnglish
Title of host publicationTopics in Cryptology, CT-RSA 2014 - The Cryptographer's Track at the RSA Conference 2014, Proceedings
Pages64-84
Number of pages21
DOIs
StatePublished - 2014
Event2014 Conference on Cryptographer's Track at the RSA, CT-RSA 2014 - San Francisco, CA, United States
Duration: 25 Feb 201428 Feb 2014

Publication series

NameLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Volume8366 LNCS
ISSN (Print)0302-9743
ISSN (Electronic)1611-3349

Conference

Conference2014 Conference on Cryptographer's Track at the RSA, CT-RSA 2014
Country/TerritoryUnited States
CitySan Francisco, CA
Period25/02/1428/02/14

Keywords

  • Broadcast Encryption
  • Receiver Anonymity
  • Steganography

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