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copied!<p>I'll leave the original answer content below for historical reference, but it should be noted that <strong>this is NOT a working answer to the original question</strong>.</p> <p>Instead, see the top-voted answer in this thread, by @Terrapin in January 2011. I hope the OP sees this and can change the accepted answer. Heck, I'll even flag the mods to see if anything can be done about this.</p> <hr> <p>To build on the answer by Edward Smith, and the follow-up comments by czuroski, here is my solution.</p> <p>First, you need an XOR function in C#, which I've taken from <a href="http://www.eggheadcafe.com/tutorials/aspnet/8b53894c-a889-4914-8c46-122980cc44ae/simple-xor-encryption.aspx" rel="nofollow noreferrer">here</a> and modified slightly.</p> <pre><code>using System; using System.Collections.Generic; using System.Text; namespace SimpleXOREncryption { public static class EncryptorDecryptor { public static string EncryptDecrypt(string textToEncrypt, int key) { StringBuilder inSb = new StringBuilder(textToEncrypt); StringBuilder outSb = new StringBuilder(textToEncrypt.Length); char c; for (int i = 0; i < textToEncrypt.Length; i++) { c = inSb[i]; c = (char)(c ^ key); outSb.Append(c); } return outSb.ToString(); } } } </code></pre> <p>Then, take the result of the XOR and base-64 encode it. After you have that string, MD5 hash it. The result should match the result from the original code snippet:</p> <pre><code>#Hash(Encrypt(Form.UserPassword,GetSiteVars.EnCode))# </code></pre>

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