On CCA-Secure Somewhat Homomorphic Encryption

@inproceedings{Loftus2011OnCS,
  title={On CCA-Secure Somewhat Homomorphic Encryption},
  author={Jake Loftus and Alexander May and Nigel P. Smart and Frederik Vercauteren},
  booktitle={Selected Areas in Cryptography},
  year={2011}
}
It is well known that any encryption scheme which supports any form of homomorphic operation cannot be secure against adaptive chosen ciphertext attacks. The question then arises as to what is the most stringent security definition which is achievable by homomorphic encryption schemes. Prior work has shown that various schemes which support a single homomorphic encryption scheme can be shown to be IND-CCA1, i.e. secure against lunchtime attacks. In this paper we extend this analysis to the… CONTINUE READING

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