@article{LibertVergnaud2011a,
  author    = {Beno\^{\i}t Libert and
               Damien Vergnaud},
  title     = {Unidirectional Chosen-Ciphertext Secure Proxy Re-encryption},
  pages     = {1786-1802},
  journal   = {IEEE Trans. Inf. Theory},
  volume    = {57},
  number    = {3},
  year      = {2011},
}