A Hybrid Cryptosystem based on Latin Square and the Modified BB84 Quantum Key Distribution
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Abstract
A new algorithm to improve the security of the transmitted data over the communication channels is presented in this paper. This algorithm is combining Latin square with the modified version of the BB84 Quantum Key Distribution protocol. As the order of the Latin square increases, then , which is the total number of Latin squares of order- , increases quickly. Moreover, the modified BB84 key distribution protocol is a secure method to exchange the encryption keys between two parties. The reason behind that is that the modified BB84 uses the Legendre symbol to generate the quantum key, and it uses the quantum channel only to perform the distribution process instead of using both channels, classic and quantum, as in the standard BB84 protocol. Therefore, the proposed algorithm is secure, reliable and efficient for future communications
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