Chosen-Ciphertext Secure Proxy Re-Encryption without Pairings

  title={Chosen-Ciphertext Secure Proxy Re-Encryption without Pairings},
  author={Jian Weng and Robert H. Deng and Shengli Liu and Kefei Chen and Junzuo Lai and Xu An Wang},
  journal={IACR Cryptology ePrint Archive},
Proxy re-encryption (PRE), introduced by Blaze, Bleumer and Strauss, allows a semi-trusted proxy to convert a ciphertext originally intended for Alice into an encryption of the same message intended for Bob. Proxy re-encryption has found many practical applications, such as encrypted email forwarding, secure distributed file systems, and outsourced filtering of encrypted spam. In ACM CCS’07, Canetti and Hohenberger presented a bidirectional PRE scheme with chosen-ciphertext security, and left… CONTINUE READING
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