Encrypting and decrypting asp.net configuration files (web.config)

First add a reference: using System.Web.Configuration;




The
encryption operation is as follows:


PRivate void ProtectSection (String sectionname, string provider)


    {


Configuration config =


WebConfigurationManager.


openwebconfiguration (Request.applicationpath);





configurationsection section = config. GetSection (sectionname);





if (section!= null &&!section. sectioninformation.isprotected)


        {


section. Sectioninformation.protectsection (provider);


CONFIG. Save ();


        }


    }




The
decryption operation is as follows:


private void Unprotectsection (string sectionname)


    {


Configuration config =


WebConfigurationManager.


openwebconfiguration (Request.applicationpath);





ConfigurationSection section = Config. GetSection (sectionname);





if (section!= null && section. sectioninformation.isprotected)


        {


section. Sectioninformation.unprotectsection ();


CONFIG. Save ();


        }


    }


Practice:


configuration file before encryption:


<?xml version= "1.0"?>


<configuration>


<appSettings>


<add key= "name" value= "shy520"/>


<add key= "Address" value= "Cnblogs"/>


</appSettings>


<system.web>


<compilation debug= "true"/>


</system.web>


</configuration>





encrypted configuration file (web.config) :


<?xml version= "1.0"?>


<configuration>


<appsettings configprotectionprovider= "DataProtectionConfigurationProvider" >


<EncryptedData>


<CipherData>


<CipherValue>


Aqaaancmnd8bfderjhoawe/cl+s


Baaaabi1atlnkeugef0xywgl2xg


qaaaacaaaaaaadzgaaqaaaabaaa


abihxmwlazantwiipst1cdxaaaa


aasaaacgaaaaeaaaapz/ykyx07c


b+h4fqdr4fklgaaaax1ieyc+wsx


Afsdw1vn2c/fxsg2tanyeugacov


8e3ngfthhsh91gliqkregfpyzgr


Vw1xrez/3vwomji9es7efkrcxej


Nnhl66kg2inrk3ntlnzlztts3cz


9W63U47VKAJS6MIWSGBZ2GNTL/9


UGHLELIGRJCR3YJ+LSJOSCEXQNV


HGVA48EFXPD+TEIFBTGXEHSFKQX


CQGYSSHX16VCT2GUNUC3ZMEAHBH


USAFKPIYQELYHD4+M9A/XPE2TQW


GIBLA1WBW2NDEFRZJPWNKFMPNQR


hxijkimipwxbdvyy6o0uaaaas8d


suynohj7qajja2c/4euc7sks=


</CipherValue>


</CipherData>


</EncryptedData>


</appSettings>


<system.web>


<compilation debug= "true"/>


</system.web>


</configuration>