Learn More
Since there always exists a possibility that some users' private keys are stolen or expired in practice, it is important for identity based encryption (IBE) system to provide a solution to revocation. The current most efficient revocable IBE system has a private key of size <i>O</i>(log <i>ns</i>) and update information of size <i>O</i>(<i>r</i>(More)
  • 1