Low Overhead Broadcast Encryption from Multilinear Maps

  title={Low Overhead Broadcast Encryption from Multilinear Maps},
  author={Dan Boneh and Brent Waters and Mark Zhandry},
We use multilinear maps to provide a solution to the long-standing problem of public-key broadcast encryption where all parameters in the system are small. In our constructions, ciphertext overhead, private key size, and public key size are all poly-logarithmic in the total number of users. The systems are fully secure against any number of colluders. All our systems are based on an O(logN)-way multilinear map to support a broadcast system for N users. We present three constructions based on… CONTINUE READING

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