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A wire-tap approach to enhance security in communication systems using the encoding-encryption paradigm

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2 Author(s)
Miodrag Mihaljevic¿ ; Mathematical Institute, Serbian Academy of Sciences and Arts, Belgrade, Serbia and Research Center for Information Security (RCIS), Institute of Advanced Industrial Science and Technology (AIST), Tokyo, Japan ; Frédérique Oggier

Motivated by the GSM system, we consider communication systems which employ the encoding-encryption paradigm of first encoding the data before encrypting it for transmission. We add one level of security to the existing system designs by introducing a wiretap encoder. We analyze the security from an information theoretical point of view, and prove the enhanced security of the proposed scheme, focusing on the case of known plain text attacks that can endanger not only the confidentiality of some messages but also the safety of the key used for encryption, and thus the security of the whole communication system.

Published in:

Telecommunications (ICT), 2010 IEEE 17th International Conference on

Date of Conference:

4-7 April 2010