Conditional Proxy Broadcast Re-Encryption

@inproceedings{Chu2009ConditionalPB,
  title={Conditional Proxy Broadcast Re-Encryption},
  author={Cheng-Kang Chu and Jian Weng and Sherman S. M. Chow and Jianying Zhou and Robert H. Deng},
  booktitle={ACISP},
  year={2009}
}
A proxy re-encryption (PRE) scheme supports the delegation of decryption rights via a proxy, who makes the ciphertexts decryptable by the delegatee. PRE is useful in various applications such as encrypted email forwarding. In this paper, we introduce a more generalized notion of conditional proxy broadcast re-encryption (CPBRE). A CPBRE scheme allows Alice to generate a re-encryption key for some condition specified during the encryption, such that the re-encryption power of the proxy is… CONTINUE READING
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