Abstract
In modern security models, cryptography plays a fundamental role in protecting data integrity and confidentiality in information systems. However, cryptography itself is subject to cryptanalysis attacks. To reduce the cryptanalysis attack risk, a dynamic key theory is presented and analyzed in this paper. Because these dynamic keys are one-time used symmetric cryptographic keys, they can significantly improve the security of cryptographic systems. The dynamic key theory generation scheme and key update mechanism are formally analyzed to demonstrate balance between security and performance. The theory can be applied to enhance the security and performance of cryptographic systems, especially those used in wireless networks communication. Two case studies using the proposed dynamic key theory are also described and analyzed to illustrate the power of the theory.
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