打开cmd，进入vs安装目录C:\Windows\Microsoft.NET\Framework64\v4.0.30319

cd C:\Windows\Microsoft.NET\Framework64\v4.0.30319

如果是Web.config就直接加密，是App.config就先改为Web.config才可以进行加密

aspnet_regiis -pef "节点" "项目路径"

例如：

需要加密的App.config数据库连接字符串为

<connectionStrings> <add name="connStr" connectionString="Data Source=.;Initial Catalog=testDB;User ID=sa;Password=123456" /> </connectionStrings>

加密命令为

aspnet_regiis -pef "connectionStrings" "Web.config所在目录"

如加密失败

解决方案：

创建一个可导出的rsa密钥容器，命名为Key

aspnet_regiis -pc "Key" -exp

将Web.cofig/App.config的configuration增加属性值xmlns，即改为

<configuration xmlns="http://schemas.microsoft.com/.NetConfiguration/v2.0">

将数据库连接字符串改为以下：

<configProtectedData> <providers> <clear /> <add name="KeyProvider" type="System.Configuration.RsaProtectedConfigurationProvider, System.Configuration, Version=2.0.0.0,Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL" keyContainerName="Key" useMachineContainer="true"/> </providers> </configProtectedData> <connectionStrings> <add name="connStr" connectionString="Data Source=.;Initial Catalog=testDB;User ID=sa;Password=123456;" providerName="System.Data.SqlClient" /> </connectionStrings>

开始对配置文件进行加密

aspnet_regiis -pef "connectionStrings" "Web.config所在目录" -prov "KeyProvider"

注意：vs会提示是否修改，选择全是

解密配置文件

aspnet_regiis -pdf "connectionStrings" "Web.config所在目录"

如果是App.config改成的Web.config，加密成功之后再改为App.config，并删除configuration的属性xmlns值

未加密的Web.config/App.config文件内容：

<?xml version="1.0" encoding="utf-8" ?><configuration> <startup> <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.5.2" /> </startup> <connectionStrings> <add name="connStr" connectionString="Data Source=.;Initial Catalog=testDB;User ID=sa;Password=123456" /> </connectionStrings></configuration>

修改为加密后的Web.config/App.config文件内容：

<?xml version="1.0" encoding="utf-8" ?><configuration xmlns="http://schemas.microsoft.com/.NetConfiguration/v2.0"> <startup> <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.5.2" /> </startup> <configProtectedData> <providers> <clear /> <add name="KeyProvider" type="System.Configuration.RsaProtectedConfigurationProvider, System.Configuration, Version=2.0.0.0,Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL" keyContainerName="Key" useMachineContainer="true"/> </providers> </configProtectedData> <connectionStrings> <add name="connStr" connectionString="Data Source=.;Initial Catalog=testDB;User ID=sa;Password=123456;" providerName="System.Data.SqlClient" /> </connectionStrings></configuration>

加密后的Web.config/App.config文件内容：

<?xml version="1.0" encoding="utf-8" ?><configuration xmlns="http://schemas.microsoft.com/.NetConfiguration/v2.0"> <startup> <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.5.2" /> </startup> <configProtectedData> <providers> <clear /> <add name="KeyProvider" type="System.Configuration.RsaProtectedConfigurationProvider, System.Configuration, Version=2.0.0.0,Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL" keyContainerName="Key" useMachineContainer="true"/> </providers> </configProtectedData> <connectionStrings configProtectionProvider="KeyProvider"> <EncryptedData Type="http://_regiis -pz "Key"

注意：删除密钥程序会报错