对于要加密的文档,www有一套标准,约定用于加密的文档应当组成一定的格式.对于符合这个格式的xml文档,本程序能从中提前rsa加密密钥和明文进行加密.本程序还提供rsa密钥生成接口和加密解密接口.-regard to the encrypted files, www set of standards, agreement for encrypted files should be composed of a certain format. For the format of the xml document, The procedure to locate the advance rsa encryption key and the letter of encryption. The procedures also provide rsa key generation and processing interface secret decryption interface.