Adaptively Secure Broadcast Encryption with Small System Parameters

@article{Zhandry2014AdaptivelySB,
  title={Adaptively Secure Broadcast Encryption with Small System Parameters},
  author={Mark Zhandry},
  journal={IACR Cryptology ePrint Archive},
  year={2014},
  volume={2014},
  pages={757}
}
  • Mark Zhandry
  • Published 2014 in IACR Cryptology ePrint Archive
We build the first public-key broadcast encryption systems that simultaneously achieve adaptive security against arbitrary number of colluders, have small system parameters, and have security proofs that do not rely on knowledge assumptions or complexity leveraging. Our schemes are built from either composite order multilinear maps or obfuscation and enjoy a ciphertext overhead, private key size, and public key size that are all poly-logarithmic in the total number of users. Previous broadcast… CONTINUE READING

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