Security notions for information theoretically secure encryptions

  title={Security notions for information theoretically secure encryptions},
  author={Mitsugu Iwamoto and Kazuo Ohta},
  journal={2011 IEEE International Symposium on Information Theory Proceedings},
This paper is concerned with several security notions for information theoretically secure encryptions defined by the variational (statistical) distance. To ensure the perfect secrecy (PS), the mutual information is often used to evaluate the statistical independence between a message and a cryptogram. On the other hand, in order to recognize the information theoretically secure encryptions and computationally secure ones comprehensively, it is necessary to reconsider the notion of PS in terms… CONTINUE READING
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