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    copied!<p>You could put the password into a separate section and encrypt this section only. For example:</p> <pre><code>&lt;?xml version="1.0" encoding="utf-8" ?&gt; &lt;configuration&gt; &lt;configSections&gt; &lt;section name="secureAppSettings" type="System.Configuration.NameValueSectionHandler, System, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" /&gt; &lt;/configSections&gt; &lt;appSettings&gt; &lt;add key="Host" value="www.foo.com" /&gt; &lt;add key="Token" value="qwerqwre" /&gt; &lt;add key="AccountId" value="123" /&gt; &lt;add key="DepartmentId" value="456" /&gt; &lt;add key="SessionEmail" value="foo@foo.com" /&gt; &lt;add key="DefaultFolder" value="789" /&gt; &lt;/appSettings&gt; &lt;secureAppSettings&gt; &lt;add key="Password" value="asdfasdf" /&gt; &lt;/secureAppSettings&gt; &lt;/configuration&gt; </code></pre> <p>and then (note that I am using DPAPI in my example so adapt the provider for RSA):</p> <pre><code>aspnet_regiis -pef secureAppSettings . -prov DataProtectionConfigurationProvider </code></pre> <p>Once encrypted the file will look like this:</p> <pre><code>&lt;?xml version="1.0" encoding="utf-8" ?&gt; &lt;configuration&gt; &lt;configSections&gt; &lt;section name="secureAppSettings" type="System.Configuration.NameValueSectionHandler, System, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" /&gt; &lt;/configSections&gt; &lt;appSettings&gt; &lt;add key="Host" value="www.foo.com" /&gt; &lt;add key="Token" value="qwerqwre" /&gt; &lt;add key="AccountId" value="123" /&gt; &lt;add key="DepartmentId" value="456" /&gt; &lt;add key="SessionEmail" value="foo@foo.com" /&gt; &lt;add key="DefaultFolder" value="789" /&gt; &lt;/appSettings&gt; &lt;secureAppSettings configProtectionProvider="DataProtectionConfigurationProvider"&gt; &lt;EncryptedData&gt; &lt;CipherData&gt; &lt;CipherValue&gt;AQAAANCMnd.......&lt;/CipherValue&gt; &lt;/CipherData&gt; &lt;/EncryptedData&gt; &lt;/secureAppSettings&gt; &lt;/configuration&gt; </code></pre> <p>The way you would access those settings in your application once the file is encrypted is still the same and completely transparent:</p> <pre><code>var host = ConfigurationManager.AppSettings["Host"]; var password = ConfigurationManager.AppSettings["Password"]; </code></pre>
 

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