这里以对字符串的签名和验证为例，说明数字签名函数用法。算法为MD5WITHRSA.-Here for the signature and verification of the string as an example to illustrate usage of the digital signature function. Algorithm MD5WITHRSA.

C# 对接 Java 3des md5WithRsa, 有需要的可以参考下-C# docking md5WithRsa Java 3 des, have need can under reference