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POasp.net encrypted membership password & username retrieval
 

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  1. POasp.net encrypted membership password & username retrieval
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    <p>I can't seem to find out how I should decrypt the encrypted password using sha1 via the membership provider.</p> <p>I can't use the .GetPassword() method here because I'm retrieving the values from a sqldatasource and placing them into a gridview.</p> <p>Here's the gridview:</p> <pre><code> &lt;asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" DataKeyNames="UserId" DataSourceID="SqlDataSource1" EmptyDataText="There are no data records to display." OnSelectedIndexChanged="GridView1_SelectedIndexChanged" &gt; &lt;Columns&gt; &lt;asp:CommandField ShowDeleteButton="True" ButtonType="Button" /&gt; &lt;asp:TemplateField HeaderText="Block users"&gt; &lt;ItemTemplate&gt; &lt;asp:Button runat="server" ID="btnBlock" CommandName="Block" CommandArgument='&lt;%# Eval("UserId") %&gt;' Text="Block" OnClick="btnBlock_Click" Visible='&lt;%# !Convert.ToBoolean(Eval("IsLockedOut")) %&gt;' /&gt; &lt;asp:Button runat="server" ID="btnDeblock" CommandName="Deblock" CommandArgument='&lt;%# Eval("UserId") %&gt;' Text="Deblock" OnClick="btnBlock_Click" Visible='&lt;%# Convert.ToBoolean(Eval("IsLockedOut")) %&gt;' /&gt; &lt;/ItemTemplate&gt; &lt;/asp:TemplateField&gt; &lt;asp:TemplateField HeaderText="Username"&gt; &lt;ItemTemplate&gt; &lt;asp:Label ID="UserId" runat="server" Text='&lt;%# Bind("UserId") %&gt;' OnDataBinding="Decrypt" /&gt; &lt;/ItemTemplate&gt; &lt;/asp:TemplateField&gt; &lt;asp:BoundField DataField="UserId" HeaderText="User id" ReadOnly="True" SortExpression="UserId" /&gt; &lt;asp:BoundField DataField="Email" HeaderText="Email" SortExpression="Email" /&gt; &lt;asp:BoundField DataField="LastLoginDate" HeaderText="Last login" SortExpression="LastLoginDate" /&gt; &lt;asp:CheckBoxField DataField="IsLockedOut" HeaderText="Locked" SortExpression="IsLockedOut" /&gt; &lt;asp:BoundField DataField="FailedPasswordAttemptCount" HeaderText="Failed logins" SortExpression="FailedPasswordAttemptCount" /&gt; &lt;asp:BoundField DataField="Comment" HeaderText="Comments" SortExpression="Comment" /&gt; &lt;/Columns&gt; &lt;/asp:GridView&gt; </code></pre> <p>I have replaced the boundfield with an itemtemplate in a Templatefield. The label inside the itemtemplate is bound to the username, the label has also an OnDataBind="Decrypt" that should decrypt the value in the Text attribute of the label. I've been trying a few examples I found online (even from this forum), but my understanding of .net is not that fantastic yet. Here's what I tried in the decrypt() listener:</p> <pre><code>public void Decrypt(object sender, EventArgs e) { Label lbl = (Label)sender; string decrypted = string.Empty; UTF8Encoding encode = new UTF8Encoding(); Decoder Decode = encode.GetDecoder(); byte[] todecode_byte = Convert.FromBase64String(lbl.Text); int charCount = Decode.GetCharCount(todecode_byte, 0, todecode_byte.Length); char[] decoded_char = new char[charCount]; Decode.GetChars(todecode_byte, 0, todecode_byte.Length, decoded_char, 0); decrypted = new String(decoded_char); lbl.Text = decrypted; } </code></pre> <p>I was trying to get the username decrypted first, I suppose it's the same method for the password. To eleminate further questions, here's my setup in web.config</p> <pre><code>&lt;membership defaultProvider="MembershipProvider"&gt; &lt;providers&gt; &lt;clear/&gt; &lt;add name="MembershipProvider" type="System.Web.Security.SqlMembershipProvider" connectionStringName="GustaafConnectionString" applicationName="Gustaaf" enablePasswordRetrieval="true" enablePasswordReset="false" requiresQuestionAndAnswer="true" requiresUniqueEmail="false" passwordFormat="Encrypted"/&gt; &lt;/providers&gt; &lt;/membership&gt; &lt;machineKey validationKey="..." decryptionKey="..." validation="SHA1" decryption="AES"/&gt; </code></pre>
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