1 research outputs found
Secrecy Amplification for Distributed Encrypted Sources with Correlated Keys using Affine Encoders
This paper proposed the application of post-encryption-compression (PEC) to
strengthen the secrecy in the case of distributed encryption where the
encryption keys are correlated to each other. We derive the universal code
construction for the compression and the rate region where codes with
achievability and secrecy are obtainable. Our main technique is to use affine
encoders which are constructed from certain linear encoders to encode the
ciphertexts before sending them to public communication channels. We show that
if the rates of linear codes are within a certain rate region:(1) information
leakage on the original sources from the encoded ciphertexts without the keys
is negligible, while (2) one who has legitimate keys is able to retrieve the
original source data with negligible error probability.Comment: An extended abstract is submitted to ISIT 2018. This is the full
version. arXiv admin note: text overlap with arXiv:1801.0256