Dynamic Key Cryptography and Applications

In modern security models, cryptography plays a funda-mental role in protecting data integrity and confidential-ity in information systems. However, cryptography itself is subject to cryptanalysis attacks. To reduce the crypt-analysis 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 sys-tems. The dynamic key theory generation scheme and key update mechanism are formally analyzed to demon-strate balance between security and performance. The theory can be applied to enhance the security and perfor-mance 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