Direct Chosen-Ciphertext Secure Identity-Based Key Encapsulation Without Random Oracles

@inproceedings{Kiltz2006DirectCS,
  title={Direct Chosen-Ciphertext Secure Identity-Based Key Encapsulation Without Random Oracles},
  author={Eike Kiltz and David Galindo},
  booktitle={ACISP},
  year={2006}
}
We describe a new and practical identity-based key encapsulation mechanism that is secure in the standard model against chosen-ciphertext (CCA2) attacks. Since our construction is direct and not based on hierarchical identity-based encryption, it is more efficient than all previously proposed schemes. Furthermore, we give the first chosen-ciphertext secure identity-based key encapsulation mechanism with threshold key delegation and decryption in the standard model. 1 CWI Amsterdam, The… CONTINUE READING
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