简单的sso实现，需要bcprov-jdk15-135.jar，commons-logging-1.1.jar-Sso simple realization of the need to bcprov-jdk15-135.jar, commons-logging-1.1.jar

利用椭圆算法对数据进行签名认证的代码,需要下载bcprov-jdk16-137.jar进行支持.-The use of the data ellipse algorithm signature verification code, will need to download bcprov-jdk16-137.jar support.