一个智能卡加密的好文章，详细记述了一个加强的智能卡加密算法的实现-Abstract – Hwang and Li proposed the first remote user authentication scheme using smart cards to solve the problems of Lamport scheme. Unfortunately, Hwang and Li’s scheme has some security weaknesses. First, C

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This abstract class should be extended by service providers that provide instances of BreakIterator.