The digit-serial architecture is used in Montgomery multiplication and inverse, so the scalable Montgomery multiplication algorithm corresponding to small data path is presented by us.

• 基于字串行架构实现了模乘和求逆运算；并提出了相应的可伸缩蒙哥马利模乘算法；使基本运算具有数据通路小、可伸缩性强的特点.