International Association for Cryptologic Research

International Association
for Cryptologic Research


Paper: New Construction of Identity-based Proxy Re-encryption

Song Luo
Jianbin Hu
Zhong Chen
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Abstract: A proxy re-encryption (PRE) scheme involves three parties: Alice, Bob, and a proxy. PRE allows the proxy to translate a ciphertext encrypted under Alice's public key into one that can be decrypted by Bob's secret key. We present a general method to construct an identity-based proxy re-encryption scheme from an existing identity-based encryption scheme. The transformed scheme satisfies the properties of PRE, such as unidirectionality, non-interactivity and multi-use. Moreover, the proposed scheme has master key security, allows the encryptor to decide whether the ciphertext can be re-encrypted.
  title={New Construction of Identity-based Proxy Re-encryption},
  booktitle={IACR Eprint archive},
  keywords={public-key cryptography / Proxy Re-encryption, Identity-Based Encryption},
  note={ 14837 received 16 Aug 2010},
  author={Song Luo and Jianbin Hu and Zhong Chen},