用asp.net自带Provider给web.config加密的注意事项

下面是加密的程序，但是在本机加密以后把web.config传到服务器上以后会出现未能使用提供程序“RsaProtectedConfigurationProvider”进行解密 的错误信息。其实解决的办法很简单。只要把加密的程序一并传到服务器上。然后运行一下。这样就好用了(不过运行加密程序前，web.config应该是没加密的哦）。这个加密程序代码来自圣殿祭司的asp.net2.0开发详解

一：给connectionstrings加密

Configuration myConfiguration = null;
ConfigurationSection myConnectionStrings = null;

protected void Page_Load(object sender, EventArgs e)
{

}

//以DPAPIProtectedConfigurationProvider加密
protected void btnDPAIP_Click(object sender, EventArgs e)
{
try
{
getConnectionSettings(out myConfiguration, out myConnectionStrings);

if (!myConnectionStrings.SectionInformation.IsProtected)
{
//DPAPI加密
myConnectionStrings.SectionInformation.ProtectSection("DataProtectionConfigurationProvider");
myConfiguration.Save(); //存储设置写入web.config文件
new AlertMessage().showMsg(this.Page, "以DPAIP加密成功！");
}
}
catch (Exception ex)
{
new AlertMessage().showMsg(this.Page,ex.Message.ToString());
}
}

//以RSAProtectedConfigurationProvider加密
protected void btnRSA_Click(object sender, EventArgs e)
{
try
{
getConnectionSettings(out myConfiguration, out myConnectionStrings);

if (!myConnectionStrings.SectionInformation.IsProtected)
{
//RSA加密
myConnectionStrings.SectionInformation.ProtectSection("RSAProtectedConfigurationProvider");
myConfiguration.Save(); //存储设置写入web.config文件
new AlertMessage().showMsg(this.Page, "以RSA加密成功！");
}

}
catch (Exception ex)
{
new AlertMessage().showMsg(this.Page,ex.Message.ToString());
}
}

//取得取得Web.config中connectionStrings设置区块
protected void getConnectionSettings(out Configuration myConfig,out ConfigurationSection connStrings)
{
//打开Request所在路径网站的Web.config文件
myConfig = WebConfigurationManager.OpenWebConfiguration(Request.ApplicationPath);
//取得Web.config中connectionStrings设置区块
connStrings = myConfig.GetSection("connectionStrings");
}

//解密
protected void btnDecrypt_Click(object sender, EventArgs e)
{
try
{
getConnectionSettings(out myConfiguration, out myConnectionStrings);
myConnectionStrings.SectionInformation.UnprotectSection(); //解密
myConfiguration.Save();
new AlertMessage().showMsg(this.Page, "connectionStrings解密成功！");
}
catch (Exception ex)
{
new AlertMessage().showMsg(this.Page,ex.Message.ToString());
}
}

二给appsettings加密

Configuration myConfiguration = null;
ConfigurationSection myAppSettings = null;

protected void Page_Load(object sender, EventArgs e)
{

}

//以DPAPIProtectedConfigurationProvider加密
protected void btnDPAIP_Click(object sender, EventArgs e)
{
try
{
getAppSettings(out myConfiguration, out myAppSettings);

if (!myAppSettings.SectionInformation.IsProtected)
{
//DPAPI加密
myAppSettings.SectionInformation.ProtectSection("DataProtectionConfigurationProvider");
myConfiguration.Save(); //存储设置写入web.config文件
new AlertMessage().showMsg(this.Page, "以DPAIP加密成功！");
}
}
catch (Exception ex)
{
new AlertMessage().showMsg(this.Page,ex.Message.ToString());
}
}

//以RSAProtectedConfigurationProvider加密
protected void btnRSA_Click(object sender, EventArgs e)
{
try
{
getAppSettings(out myConfiguration, out myAppSettings);

if (!myAppSettings.SectionInformation.IsProtected)
{
//RSA加密
myAppSettings.SectionInformation.ProtectSection("RSAProtectedConfigurationProvider");
myConfiguration.Save(); //存储设置写入web.config文件
new AlertMessage().showMsg(this.Page, "以RSA加密成功！");
}
}
catch (Exception ex)
{
new AlertMessage().showMsg(this.Page,ex.Message.ToString());
}
}

//取得Web.config中appSettings设置区块
protected void getAppSettings(out Configuration myConfig,out ConfigurationSection appSettings)
{
//开启Request所在路径网站的Web.config文件
myConfig = WebConfigurationManager.OpenWebConfiguration(Request.ApplicationPath);
//取得Web.config中appSettings设置区块
appSettings = myConfig.GetSection("appSettings");
}

//解密
protected void btnDecrypt_Click(object sender, EventArgs e)
{
try
{
getAppSettings(out myConfiguration, out myAppSettings);
if (myAppSettings.SectionInformation.IsProtected)
{
myAppSettings.SectionInformation.UnprotectSection(); //解密
myConfiguration.Save();
}
new AlertMessage().showMsg(this.Page, "appSettings解密成功！");
}
catch (Exception ex)
{
new AlertMessage().showMsg(this.Page,ex.Message.ToString());
}
}