web.config 连接字符串 加密解密,代码方式

//对 web.config 的加密解密

//如果要加密 appSettings 把 connectionStrings 改为 appSettings 就可以

<appSettings>
 <add key="con" value="server=.;uid=sa;pwd=;database=demo"/>
</appSettings>
<connectionStrings>
 <add name="con" connectionString="server=.;uid=sa;pwd=;database=demo" />
</connectionStrings>

//DPAPI加密解密
protected void btnPdfPefDPAPI_Click(object sender, EventArgs e)
{
 Configuration config = WebConfigurationManager.OpenWebConfiguration(Request.ApplicationPath);
 ConfigurationSection configSection = config.GetSection("connectionStrings");
 //如果已经加密，则进行解密
        if (configSection.SectionInformation.IsProtected)
        {
            configSection.SectionInformation.UnprotectSection();
            config.Save();
        }
 //加密
        else
        {
            configSection.SectionInformation.ProtectSection("DataProtectionConfigurationProvider");
            config.Save();
        }
}

//RSA加密解密
protected void btnPdfPefRSA_Click(object sender, EventArgs e)
{
 Configuration config = WebConfigurationManager.OpenWebConfiguration(Request.ApplicationPath);
 ConfigurationSection configSection = config.GetSection("connectionStrings");
 ////如果已经加密，则进行解密
        if (configSection.SectionInformation.IsProtected)
        {
            configSection.SectionInformation.UnprotectSection();
            config.Save();
        }
 //加密
        else
        {
            configSection.SectionInformation.ProtectSection("RSAProtectedConfigurationProvider");
            config.Save();
        }
}

--蛮基础的一些东西,备忘用的.