In terms of the problem of realizing the key modules in the reconstructure design for block cipher, the paper deeply studies the partitioning of the reconstructure logic units in the block cipher algorithms and the common functional modules required in the algorithm. By using the reconstructure principle, the paper designs an ADD module of block chips algorithm and the reorganizing implementation for S- box, provides a detailed elementary diagram for realizing. It also offers a design of production line under the reconstructure structure. According to the test, The designed restructure functional module may raise 8 times of speeds on the additive operation at highest. When carries on the S box table looking-up, the resources reach 52% economical.%针对分组密码可重构设计中关键模块的详细实现问题,深入研究了分组密码算法中可重构逻辑单元的划分,以及需要实现的常用功能模块；利用可重构原理,设计了分组密码算法中的加法模块和S盒的重构实现方案,给出了详细的实现原理图；为了提高运行速度,给出了在重构结构下的流水线设计；经实验测试表明,设计的重构功能模块在进行加法运算时最高可提高8倍速度,进行S盒查表时,资源节省达52％.
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