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密码重构有助于增强安全性和构造新的算法,节约硬件资源和能源,延长设备使用周期。阐述了密码重构的概念及其重要性,并对国内外重构现状以及分组密码发展现状进行了研究。分别实现了GOST和BLOWFISH两种分组密码算法内的重构以及算法间的重构,给出了模块细化结果以及重构层次图。最后对后续进一步的研究和改进方向进行了阐述。
Password refactoring helps increase security and construct new algorithms, conserves hardware and energy, and extends device lifecycles. The concept of password reconstruction and its importance are expounded, and the status quo of reconstruction at home and abroad as well as the development of block cipher are studied. The reconstruction of GOST and BLOWFISH algorithms in two block ciphers and the reconstruction of the algorithms are respectively implemented. The refinement results of the modules and the reconstruction of the hierarchical graph are given. Finally, the further research and improvement direction are described.