Hybrid Strategies for Choosing Suitable Cryptosystem Based on Game and Information Theories

This paper provides a new approach for enhancing the security of a computer. This enhancement can be achieved by treatment with the best strategy for executing some chosen crypto-systems on a computer. The enhancement process is done in two stages; the first stage depends on the result of the security evaluation of the crypto-system. The second stage compares several crypto-systems which are evaluated in the first stage. This research is a complementary to the previous published papers and focused on comparing different crypto-systems which are strongly different in their securities, and propose the best strategies for their use. The proposed approach used information theory and triangular game as a basic rule in order to provide accurate indicators for the security of crypto-systems, and also used diagonal game to suggest the best strategy to use the cryptosystems.

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