web.Config加密解密最简单实用方法

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web.config的文件多数的时候不希望别人看到，下面提供一个加密，解密的语句，简洁方便实用，先看到效果，至于加密的原理其他的网页上做了很多说明，这里只演示效果。
5 s1 v# Q1 ]) d$ ^( [0 |　　加密前的connectionStrings节点
- x# k# H5 G: P$ ]+ R0 s$ [　　代码
　　<connectionStrings>
4 k8 A4 x6 [2 M2 K! Z8 w3 T4 ]　　<add name="SQLConnString1" connectionString="server=WJW-PC\SQL2008;user id=sa;password=12345;Initial Catalog=dbFASH;min pool size=4;max pool size=400;" />
; T* x: F& U7 \3 @　　<add name="eziyaConnectionString1" connectionString="Data Source=HOME-COMPUTER;Initial Catalog=dbFASH;Integrated Security=True;MultipleActiveResultSets=Falseacket Size=4096;Application Name=&quot;Microsoft SQL Server Management Studio&quot;"
' v: S+ n7 Y, o. @' G8 [$ |　　providerName="System.Data.SqlClient" />
　　<add name="eziyaConnectionString2" connectionString="Data Source=192.168.1.200;Initial Catalog=dbFASHersist Security Info=True;User ID=taoka;MultipleActiveResultSets=Falseacket Size=4096;Application Name=&quot;Microsoft SQL Server Management Studio&quot;"
　　providerName="System.Data.SqlClient" />
　　<add name="eziyaConnectionString3" connectionString="Data Source=192.168.61.160;Initial Catalog=dbFASHersist Security Info=True;User ID=sa;MultipleActiveResultSets=Falseacket Size=4096;Application Name=&quot;Microsoft SQL Server Management Studio&quot;"
　　providerName="System.Data.SqlClient" />
6 R0 l- e1 E0 t( `! n2 I! @" ]　　</connectionStrings>
3 V) }- f3 v2 }- ^　　加密后的connectionStrings的节点
　　代码
　　<connectionStrings configProtectionProvider="RsaProtectedConfigurationProvider">
# }# I( X. ^. s7 e8 T* g/ V　　<EncryptedData Type="http://www.w3.org/2001/04/xmlenc#Element"
　　xmlns="http://www.w3.org/2001/04/xmlenc#"&gt;
; J" E* w! ^* s. P: \% B　　<EncryptionMethod Algorithm="http://www.w3.org/2001/04/xmlenc#tripledes-cbc" />
, L, L. e+ Y* ?" q8 H　　<KeyInfo xmlns="http://www.w3.org/2000/09/xmldsig#"&gt;
　　<EncryptedKey xmlns="http://www.w3.org/2001/04/xmlenc#"&gt;
　　<EncryptionMethod Algorithm="http://www.w3.org/2001/04/xmlenc#rsa-1_5" />
　　<KeyInfo xmlns="http://www.w3.org/2000/09/xmldsig#"&gt;
$ ~0 R3 w! ]5 u/ J- K! g5 b　　<KeyName>Rsa Key</KeyName>
　　</KeyInfo>
5 J, r  s8 p% j8 t　　<CipherData>
: z7 e. Q, S5 J0 j　　<CipherValue>FOkydQFNniZvq71ua4XapuVCUrJFOARkXeqqwyKFoP+NGXGewehxYW0zTzIn/j+YCvH/r6ABoE/AfWMMEDyr81R1mhi4ckXbiJ2BvW612/W7f7Wkqj+FDwse+lgAISHZ5HfspaY1LBvKYAu1VEm6Iu6NlT35TPnjxFf+p5Apf0E=</CipherValue>
　　</CipherData>
  C! p$ P4 m, \. \; f0 Q; C+ U# h　　</EncryptedKey>
　　</KeyInfo>
　　<CipherData>
　　<CipherValue>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</CipherValue>
$ E  S2 ?3 T' Y$ h9 D　　</CipherData>
* I) A- Z, c% U! ?　　</EncryptedData>
　　</connectionStrings>
　　完全看不到连接的信息！
　　下面是两个.bat批处理文件
: m. @; ~0 g  v( g. ~- W5 j　　加密：
　　@echo off
1 L. o* v. }/ l# y+ l4 P. V5 `: q9 ?/ [　　C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\aspnet_regiis.exe -pef "connectionStrings" "E:\code\proj\Web"
　　解密：
" H( _1 n$ }3 e5 E　　@echo off
　　C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\aspnet_regiis.exe -pdf "connectionStrings" "E:\code\proj\Web"
. i' ]/ k* i( c0 @$ J# @　　PAUSE
' c9 l/ T# c4 c　　直接将语句拷贝到.BAT文件中，E:\code\proj\Web为相应的web.config所在的路径，只能在一台电脑上操作，否则不可逆

Anthony~

好方法。我正好刚遇到这个问题