Everybody's a Target: Scalability in Public-Key Encryption

  title={Everybody's a Target: Scalability in Public-Key Encryption},
  author={Benedikt Auerbach and F. Giacon and Eike Kiltz},
  journal={IACR Cryptol. ePrint Arch.},
For \(1\le m \le n\), we consider a natural m-out-of-n multi-instance scenario for a public-key encryption (PKE) scheme. An adversary, given n independent instances of PKE, wins if he breaks at least m out of the n instances. In this work, we are interested in the scaling factor of PKE schemes, \(\mathrm {SF}\), which measures how well the difficulty of breaking m out of the n instances scales in m. That is, a scaling factor \(\mathrm {SF}=\ell \) indicates that breaking m out of n instances is… Expand
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