Paper 2010/226 Circular and Leakage Resilient Public-Key Encryption Under Subgroup Indistinguishability (or: Quadratic Residuosity Strikes Back) Zvika Brakerski and Shafi Goldwasser Abstract The main results of this work are new public-key encryption schemes that, under the quadratic residuosity (QR) assumption (or Paillier's decisional composite residuosity (DCR) assumption), achieve key-dependen
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