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POHow to configure machineKey in Custom Membership to use MD5 for ASP.MVC 4 (net 4.5)?
 

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  1. POHow to configure machineKey in Custom Membership to use MD5 for ASP.MVC 4 (net 4.5)?
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    <p>I'm implementing a CustomMembership Provider, and the first part works, login, register, etc.(I chosen the validationKey and decriptionKey for now from <a href="http://msdn.microsoft.com/en-us/library/vstudio/w8h3skw9(v=vs.100).aspx" rel="nofollow">http://msdn.microsoft.com/en-us/library/vstudio/w8h3skw9(v=vs.100).aspx</a>).</p> <p>My Web.Config:</p> <pre><code>&lt;system.web&gt; &lt;machineKey validationKey="32E35872597989D14CC1D5D9F5B1E94238D0EE32CF10AA2D2059533DF6035F4F" decryptionKey="B179091DBB2389B996A526DE8BCD7ACFDBCAB04EF1D085481C61496F693DF5F4"/&gt; &lt;membership defaultProvider="CustomMembershipProvider"&gt; &lt;providers&gt; &lt;clear /&gt; &lt;add name="CustomMembershipProvider" type="CustomMembership.CustomMembership.CustomMembershipProvider" connectionStringName="TestMembershipEntities" enablePasswordRetrieval="false" enablePasswordReset="true" requiresQuestionAndAnswer="false" requiresUniqueEmail="false" maxInvalidPasswordAttempts="5" minRequiredPasswordLength="6" minRequiredNonalphanumericCharacters="0" passwordAttemptWindow="10" applicationName="/" passwordFormat="Encrypted" /&gt; &lt;/providers&gt; &lt;/membership&gt; &lt;roleManager enabled="true" defaultProvider="CustomRoleProvider"&gt; &lt;providers&gt; ... </code></pre> <p><strong>Now I need to use MD5.</strong></p> <p>The method <code>EncryptPassword</code> choose the right Algorithm, if I set validation attribute in MachineKey?</p> <pre><code>switch (PasswordFormat) { case MembershipPasswordFormat.Clear: break; case MembershipPasswordFormat.Encrypted: byte[] encryptedPass = EncryptPassword(Encoding.Unicode.GetBytes(password)); encodedPassword = Convert.ToBase64String(encryptedPass); break; case MembershipPasswordFormat.Hashed: HMACSHA1 hash = new HMACSHA1(); hash.Key = HexToByte(machineKey.ValidationKey); encodedPassword = Convert.ToBase64String(hash.ComputeHash(Encoding.Unicode.GetBytes(password))); break; default: throw new ProviderException("Unsupported password format."); } </code></pre> <p>Changing MachineKey</p> <pre><code>&lt;machineKey validationKey="32E35872597989D14CC1D5D9F5B1E94238D0EE32CF10AA2D2059533DF6035F4F" decryptionKey="B179091DBB2389B996A526DE8BCD7ACFDBCAB04EF1D085481C61496F693DF5F4" validation="MD5" decryption="Auto" /&gt; </code></pre> <p>If I do that, I get the follow error in <code>@Html.AntiForgeryToken()</code>:</p> <pre><code>**ConfigurationErrorsException was unhandled...** When using &lt;machineKey compatibilityMode="Framework45" /&gt; or the MachineKey.Protect and MachineKey.Unprotect APIs, the 'validation' attribute must be one of these values: SHA1, HMACSHA256, HMACSHA384, HMACSHA512, or alg:[KeyedHashAlgorithm]. </code></pre> <p>I need to write custom code to Encrypt/Decrypt MD5 in <code>case MembershipPasswordFormat.Encrypted:</code> or what I need to do, thanks.</p>
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