Web.config加密——使用编程方式方式

将加密方式定义一下。主要是为了使用方便。

/// <summary>
/// 加密方式
/// </summary>
public enum EncryptType
{
DataProtectionConfigurationProvider,
RSAProtectedConfigurationProvider
}

使用DPAPI加密

/// <summary>
/// 以DPAPI方式加密Config
/// </summary>
private void EncryptWebConfigByDPAPI()
{
Configuration configuration = null;
ConfigurationSection connectionSection = null;

//打开Request所在路径网站的Web.config文件
configuration = WebConfigurationManager.OpenWebConfiguration(Request.ApplicationPath);
//取得Web.config中connectionStrings设置区块
connectionSection = configuration.GetSection("connectionStrings");
//未加密时
if (!connectionSection.SectionInformation.IsProtected)
{
connectionSection.SectionInformation.ProtectSection(EncryptType.DataProtectionConfigurationProvider.ToString());
configuration.Save();
}
}

加密前后的数据对比

<connectionStrings >
<add name="EncryptConnection" connectionString="Data Source=.\SQL2000;Initial Catalog=Northwind;user id=sa;password=test"/>
<add name="SQLExpress" connectionString="Data Source=.\SQLEXPRESS;Initial Catalog=myDB;user id=sa;password=test"
providerName="System.Data.SqlClient" />
</connectionStrings>

-------------------------

<connectionStrings configProtectionProvider="DataProtectionConfigurationProvider">
<EncryptedData>
<CipherData>
<CipherValue>AQAAANCMnd8BFdERjHoAwE/Cl+sBAAAAPCEN

eNbVhU6C+bx4E8qcPAQAAAACAAAAAAAQZgAAAAEAACAAAADiE56Y0

pGCoKEpOvxMVmMYO3tMqI/2W89HUIq0LeJAegAAAAAOgAAAAAIAACAA

AACYuFOjNtk1iprbV91mmP8aCIULLZvRHAPwbAvoHvtXpKACAABP0/YOt/B8IG/eL

naxrDVCXPq6l8McVOvpL0hV4507VEpJb6FyRoM9c5TI6iIF6Jz8GQfnfQiF4P27RLyvvv

u/R9KpuwDsZ0IKjpe47Nt/q/qOLlQx6vhQVE8yAjJ64DrujH6wjS2XdZSC03Co4u9O

G/YdJX9zkpjVMNW8cx5FFklYmIzHxWx+b1ZFtZMu0CA8lzU4slkTBFmE3JMMa4Kq

C6EGedDXD3z53QkBt3KISWt1lM5ulPeQ8rfR7qrzUEWQsgaGLuNTJvCDwlPJWb

ZVzQaOHo71/epQRPHgvmNAkK1/hRqwXr0uMF9K6HNKCr0NDLFECLHcjCC4zR

6QhhWdWT8FHPm2Zg2yucekeHQsrbiWtjZqg/DdyVPLWqmEdj82T1Gm9u9xhD

HuNLpOT1FXy7bGjjok9TW1MxbWIXQ7bBih0mUwmvESD8aZGdxoH0XEFyy3flY

2hjwszG4Opg3Qmz1/S0x6Sbz1vJJL7rk7FTdG3PwMDFvcvKlmmDZQTkM3Sqpla

zwrjYI4IJBnIAL/uBxwMdxO515lWS55dDkdnx5r8HtGoeCN+cw5qFW8xxRPRsQ

Kg6Sgti1GF2KzezZ5WJegN0hqUs18XoEpzCuuALbzHqRNBswwn0/Gfdadxfw

dNxoTHdJ+cQC3vSLk5f02pTW9CFZWDn30AFjIpMtArNltppLvWAP1YxtKMtyzj

mv7iiIOsMtHFICTJAzO7FeTc+YToifu/wddPESZQB2MlrefnUK+cBkoSzAusfhtqU

Wfhblv6JnEq5A/PdohEkSu0dn2pC6AeqoG/Yngb6BJzpRFxssDfIkDH6LfXdo4s5

WJXJx7VQNqUo4mmTKoUcp6DGmoogZqbHODL3MbgKFQyjdvXV9+4Aa9qOlHb

cKDL5tAAAAAChj0UAPAO59pmMZ7gJ67ho1Mxjg9NTuAh/lG5XI+phDRzWcNRm

jv2ZrUhz8eWIgCMoIG7NviBnbmCeT4K8pXUw==</CipherValue>
</CipherData>
</EncryptedData>
</connectionStrings>

对使用DPAPI加密的数据解密

/// <summary>
/// 解密DPAPI
/// </summary>
private void DecryptWebConfigByDPAPI()
{
Configuration configuration = null;
ConfigurationSection connectionSection = null;

//打开Request所在路径网站的Web.config文件
configuration = WebConfigurationManager.OpenWebConfiguration(Request.ApplicationPath);
//取得Web.config中connectionStrings设置区块
connectionSection = configuration.GetSection("connectionStrings");
if (connectionSection.SectionInformation.IsProtected)
{
connectionSection.SectionInformation.UnprotectSection();
configuration.Save();
}
}

调用DPAPI加密数据(无需解密)

/// <summary>
/// 取得加密后的数据
/// </summary>
private void GetEncryptWebConfigByDPAPI()
{
string cncryptConnection = WebConfigurationManager.ConnectionStrings["EncryptConnection"].ConnectionString;
string sqlExpressConnection = WebConfigurationManager.ConnectionStrings["SQLExpress"].ConnectionString;
}

使用RSA加密

/// <summary>
/// 以RSA方式加密Config
/// </summary>
private void EncryptWebConfigByRsa()
{
Configuration configuration = null;
ConfigurationSection connectionSection = null;

//打开Request所在路径网站的Web.config文件
configuration = WebConfigurationManager.OpenWebConfiguration(Request.ApplicationPath);
//取得Web.config中connectionStrings设置区块
connectionSection = configuration.GetSection("appSettings");
//未加密时
if (!connectionSection.SectionInformation.IsProtected)
{
connectionSection.SectionInformation.ProtectSection(EncryptType.RSAProtectedConfigurationProvider.ToString());
configuration.Save();
}
}

加密前后数据对比：

<appSettings>
<add key="EricTest" value="EricTest"/>
<add key="Encrypt" value="Encrypt value"/>
</appSettings>
------------------------------

<appSettings configProtectionProvider="RsaProtectedConfigurationProvider">
<EncryptedData Type="http://www.w3.org/2001/04/xmlenc#Element"
xmlns="http://www.w3.org/2001/04/xmlenc#">
<EncryptionMethod Algorithm="http://www.w3.org/2001/04/xmlenc#tripledes-cbc" />
<KeyInfo xmlns="http://www.w3.org/2000/09/xmldsig#">
<EncryptedKey xmlns="http://www.w3.org/2001/04/xmlenc#">
<EncryptionMethod Algorithm="http://www.w3.org/2001/04/xmlenc#rsa-1_5" />
<KeyInfo xmlns="http://www.w3.org/2000/09/xmldsig#">
<KeyName>Rsa Key</KeyName>
</KeyInfo>
<CipherData>
<CipherValue>CJIkulw6qBtLeY5MJ9bs1ROpF1l3f4ulRzKnd6ZXN6XyG9O+b6Hr52ijK1AL9/+nsBseAPfdKDGaX/SKlJYwgzHh

hi9sBrDBJ10dJcSnuGuWpI5zSLc+QHdpV0Z4iJTw83jmRDb9eFCX7aG60qWl52ofeqlI/ps1HsOjlKPSv8M=</CipherValue>
</CipherData>
</EncryptedKey>
</KeyInfo>
<CipherData>
<CipherValue>y1aEM/BRwcwZXWeuLe9mbakU8AuI7CpElrjoJgQEfzaoZXq7uEJspQAxJyDIYmCF4EgjKhE7pY6WBRAjRaBBODxxEQH

GJ8I1+T554H8zosZ2InO43h5X0ZjCmvAWxNbEq1rP9DnuTcHEYqrw70nNShf79W6e2fmUF1DoVpwYNWMLeHJCP7ZkZg==</CipherValue>
</CipherData>
</EncryptedData>
</appSettings>

解密RSA加密数据

/// <summary>
/// 解密Rsa
/// </summary>
private void DecryptWebConfigByRsa()
{
Configuration configuration = null;
ConfigurationSection connectionSection = null;

//打开Request所在路径网站的Web.config文件
configuration = WebConfigurationManager.OpenWebConfiguration(Request.ApplicationPath);
//取得Web.config中connectionStrings设置区块
connectionSection = configuration.GetSection("appSettings");
if (connectionSection.SectionInformation.IsProtected)
{
connectionSection.SectionInformation.UnprotectSection();
configuration.Save();
}
}

调用使用RSA加密数据(无需解密)

/// <summary>
/// 取得加密后的数据
/// </summary>
private void GetEncryptWebConfigByRsa()
{
string cncryptConnection = WebConfigurationManager.AppSettings["EricTest"];
string sqlExpressConnection = WebConfigurationManager.AppSettings["Encrypt"];
}