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<h2 title="Class NtlmAuth" class="title">Class NtlmAuth</h2>
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<li>java.lang.Object</li>
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<pre>public class <span class="strong">NtlmAuth</span>
extends java.lang.Object</pre>
<div class="block">This class calculates the two "responses" to the nonce supplied by the server
as a part of NTLM authentication.
Much gratitude to the authors of this page, esp. for NTLMv2 info:
http://davenport.sourceforge.net/ntlm.html</div>
<dl><dt><span class="strong">Version:</span></dt>
<dd>$Id: NtlmAuth.java,v 1.7 2006-06-23 18:00:56 matt_brinkley Exp $</dd>
<dt><span class="strong">Author:</span></dt>
<dd>Matt Brinkley</dd></dl>
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<th class="colOne" scope="col">Constructor and Description</th>
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<td class="colOne"><code><strong><a href="../../../../net/sourceforge/jtds/jdbc/NtlmAuth.html#NtlmAuth()">NtlmAuth</a></strong>()</code> </td>
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<th class="colFirst" scope="col">Modifier and Type</th>
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<td class="colFirst"><code>static byte[]</code></td>
<td class="colLast"><code><strong><a href="../../../../net/sourceforge/jtds/jdbc/NtlmAuth.html#answerLmChallenge(java.lang.String, byte[])">answerLmChallenge</a></strong>(java.lang.String pwd,
byte[] nonce)</code> </td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static byte[]</code></td>
<td class="colLast"><code><strong><a href="../../../../net/sourceforge/jtds/jdbc/NtlmAuth.html#answerLmv2Challenge(java.lang.String, java.lang.String, java.lang.String, byte[], byte[])">answerLmv2Challenge</a></strong>(java.lang.String domain,
java.lang.String user,
java.lang.String password,
byte[] nonce,
byte[] clientNonce)</code> </td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static byte[]</code></td>
<td class="colLast"><code><strong><a href="../../../../net/sourceforge/jtds/jdbc/NtlmAuth.html#answerNtChallenge(java.lang.String, byte[])">answerNtChallenge</a></strong>(java.lang.String password,
byte[] nonce)</code> </td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static byte[]</code></td>
<td class="colLast"><code><strong><a href="../../../../net/sourceforge/jtds/jdbc/NtlmAuth.html#answerNtlmv2Challenge(java.lang.String, java.lang.String, java.lang.String, byte[], byte[], byte[])">answerNtlmv2Challenge</a></strong>(java.lang.String domain,
java.lang.String user,
java.lang.String password,
byte[] nonce,
byte[] targetInfo,
byte[] clientNonce)</code> </td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static byte[]</code></td>
<td class="colLast"><code><strong><a href="../../../../net/sourceforge/jtds/jdbc/NtlmAuth.html#answerNtlmv2Challenge(java.lang.String, java.lang.String, java.lang.String, byte[], byte[], byte[], byte[])">answerNtlmv2Challenge</a></strong>(java.lang.String domain,
java.lang.String user,
java.lang.String password,
byte[] nonce,
byte[] targetInfo,
byte[] clientNonce,
byte[] timestamp)</code> </td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static byte[]</code></td>
<td class="colLast"><code><strong><a href="../../../../net/sourceforge/jtds/jdbc/NtlmAuth.html#answerNtlmv2Challenge(java.lang.String, java.lang.String, java.lang.String, byte[], byte[], byte[], long)">answerNtlmv2Challenge</a></strong>(java.lang.String domain,
java.lang.String user,
java.lang.String password,
byte[] nonce,
byte[] targetInfo,
byte[] clientNonce,
long now)</code> </td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>private static byte[]</code></td>
<td class="colLast"><code><strong><a href="../../../../net/sourceforge/jtds/jdbc/NtlmAuth.html#convertPassword(java.lang.String)">convertPassword</a></strong>(java.lang.String password)</code>
<div class="block">Used by answerNtlmChallenge.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>private static byte[]</code></td>
<td class="colLast"><code><strong><a href="../../../../net/sourceforge/jtds/jdbc/NtlmAuth.html#createBlob(byte[], byte[], byte[])">createBlob</a></strong>(byte[] targetInformation,
byte[] clientChallenge,
byte[] timestamp)</code>
<div class="block">Creates the NTLMv2 blob from the given target information block and
client challenge.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static byte[]</code></td>
<td class="colLast"><code><strong><a href="../../../../net/sourceforge/jtds/jdbc/NtlmAuth.html#createTimestamp(long)">createTimestamp</a></strong>(long time)</code>
<div class="block">Creates a timestamp in the format used in NTLMv2 responses.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>private static byte[]</code></td>
<td class="colLast"><code><strong><a href="../../../../net/sourceforge/jtds/jdbc/NtlmAuth.html#encryptNonce(byte[], byte[])">encryptNonce</a></strong>(byte[] key,
byte[] nonce)</code> </td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>private static byte[]</code></td>
<td class="colLast"><code><strong><a href="../../../../net/sourceforge/jtds/jdbc/NtlmAuth.html#hmacMD5(byte[], byte[])">hmacMD5</a></strong>(byte[] data,
byte[] key)</code>
<div class="block">Calculates the HMAC-MD5 hash of the given data using the specified
hashing key.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>private static byte[]</code></td>
<td class="colLast"><code><strong><a href="../../../../net/sourceforge/jtds/jdbc/NtlmAuth.html#lmv2Response(byte[], byte[], byte[])">lmv2Response</a></strong>(byte[] hash,
byte[] clientData,
byte[] challenge)</code>
<div class="block">Creates the LMv2 Response from the given hash, client data, and
Type 2 challenge.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>private static byte[]</code></td>
<td class="colLast"><code><strong><a href="../../../../net/sourceforge/jtds/jdbc/NtlmAuth.html#makeDESkey(byte[], int)">makeDESkey</a></strong>(byte[] buf,
int off)</code>
<div class="block">Turns a 7-byte DES key into an 8-byte one by adding parity bits.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>private static byte[]</code></td>
<td class="colLast"><code><strong><a href="../../../../net/sourceforge/jtds/jdbc/NtlmAuth.html#md5(byte[])">md5</a></strong>(byte[] data)</code> </td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>private static byte[]</code></td>
<td class="colLast"><code><strong><a href="../../../../net/sourceforge/jtds/jdbc/NtlmAuth.html#ntHash(java.lang.String)">ntHash</a></strong>(java.lang.String password)</code>
<div class="block">Creates the md4 hash of the unicode password.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>private static byte[]</code></td>
<td class="colLast"><code><strong><a href="../../../../net/sourceforge/jtds/jdbc/NtlmAuth.html#ntv2Hash(java.lang.String, java.lang.String, java.lang.String)">ntv2Hash</a></strong>(java.lang.String domain,
java.lang.String user,
java.lang.String password)</code> </td>
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<h3>Methods inherited from class java.lang.Object</h3>
<code>clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait</code></li>
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<h3>Constructor Detail</h3>
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<h4>NtlmAuth</h4>
<pre>public NtlmAuth()</pre>
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<h4>answerNtChallenge</h4>
<pre>public static byte[] answerNtChallenge(java.lang.String password,
byte[] nonce)
throws java.io.UnsupportedEncodingException</pre>
<dl><dt><span class="strong">Throws:</span></dt>
<dd><code>java.io.UnsupportedEncodingException</code></dd></dl>
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<h4>answerLmChallenge</h4>
<pre>public static byte[] answerLmChallenge(java.lang.String pwd,
byte[] nonce)
throws java.io.UnsupportedEncodingException</pre>
<dl><dt><span class="strong">Throws:</span></dt>
<dd><code>java.io.UnsupportedEncodingException</code></dd></dl>
</li>
</ul>
<a name="answerNtlmv2Challenge(java.lang.String, java.lang.String, java.lang.String, byte[], byte[], byte[])">
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<h4>answerNtlmv2Challenge</h4>
<pre>public static byte[] answerNtlmv2Challenge(java.lang.String domain,
java.lang.String user,
java.lang.String password,
byte[] nonce,
byte[] targetInfo,
byte[] clientNonce)
throws java.io.UnsupportedEncodingException</pre>
<dl><dt><span class="strong">Throws:</span></dt>
<dd><code>java.io.UnsupportedEncodingException</code></dd></dl>
</li>
</ul>
<a name="answerNtlmv2Challenge(java.lang.String, java.lang.String, java.lang.String, byte[], byte[], byte[], byte[])">
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<h4>answerNtlmv2Challenge</h4>
<pre>public static byte[] answerNtlmv2Challenge(java.lang.String domain,
java.lang.String user,
java.lang.String password,
byte[] nonce,
byte[] targetInfo,
byte[] clientNonce,
byte[] timestamp)
throws java.io.UnsupportedEncodingException</pre>
<dl><dt><span class="strong">Throws:</span></dt>
<dd><code>java.io.UnsupportedEncodingException</code></dd></dl>
</li>
</ul>
<a name="answerNtlmv2Challenge(java.lang.String, java.lang.String, java.lang.String, byte[], byte[], byte[], long)">
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<h4>answerNtlmv2Challenge</h4>
<pre>public static byte[] answerNtlmv2Challenge(java.lang.String domain,
java.lang.String user,
java.lang.String password,
byte[] nonce,
byte[] targetInfo,
byte[] clientNonce,
long now)
throws java.io.UnsupportedEncodingException</pre>
<dl><dt><span class="strong">Throws:</span></dt>
<dd><code>java.io.UnsupportedEncodingException</code></dd></dl>
</li>
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<a name="answerLmv2Challenge(java.lang.String, java.lang.String, java.lang.String, byte[], byte[])">
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<h4>answerLmv2Challenge</h4>
<pre>public static byte[] answerLmv2Challenge(java.lang.String domain,
java.lang.String user,
java.lang.String password,
byte[] nonce,
byte[] clientNonce)
throws java.io.UnsupportedEncodingException</pre>
<dl><dt><span class="strong">Throws:</span></dt>
<dd><code>java.io.UnsupportedEncodingException</code></dd></dl>
</li>
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<a name="ntv2Hash(java.lang.String, java.lang.String, java.lang.String)">
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<h4>ntv2Hash</h4>
<pre>private static byte[] ntv2Hash(java.lang.String domain,
java.lang.String user,
java.lang.String password)
throws java.io.UnsupportedEncodingException</pre>
<dl><dt><span class="strong">Throws:</span></dt>
<dd><code>java.io.UnsupportedEncodingException</code></dd></dl>
</li>
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<a name="lmv2Response(byte[], byte[], byte[])">
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<h4>lmv2Response</h4>
<pre>private static byte[] lmv2Response(byte[] hash,
byte[] clientData,
byte[] challenge)</pre>
<div class="block">Creates the LMv2 Response from the given hash, client data, and
Type 2 challenge.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>hash</code> - The NTLMv2 Hash.</dd><dd><code>clientData</code> - The client data (blob or client challenge).</dd><dd><code>challenge</code> - The server challenge from the Type 2 message.</dd>
<dt><span class="strong">Returns:</span></dt><dd>The response (either NTLMv2 or LMv2, depending on the
client data).</dd></dl>
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<pre>private static byte[] hmacMD5(byte[] data,
byte[] key)</pre>
<div class="block">Calculates the HMAC-MD5 hash of the given data using the specified
hashing key.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>data</code> - The data for which the hash will be calculated.</dd><dd><code>key</code> - The hashing key.</dd>
<dt><span class="strong">Returns:</span></dt><dd>The HMAC-MD5 hash of the given data.</dd></dl>
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<pre>private static byte[] md5(byte[] data)</pre>
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<h4>createTimestamp</h4>
<pre>public static byte[] createTimestamp(long time)</pre>
<div class="block">Creates a timestamp in the format used in NTLMv2 responses.
Public so it could be unit tested.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>time</code> - current time, as returned from System.currentTimeMillis</dd>
<dt><span class="strong">Returns:</span></dt><dd>little-endian byte array of number of tenths of microseconds since
Jan 1, 1601</dd></dl>
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<h4>createBlob</h4>
<pre>private static byte[] createBlob(byte[] targetInformation,
byte[] clientChallenge,
byte[] timestamp)</pre>
<div class="block">Creates the NTLMv2 blob from the given target information block and
client challenge.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>targetInformation</code> - The target information block from the Type 2
message.</dd><dd><code>clientChallenge</code> - The random 8-byte client challenge.</dd>
<dt><span class="strong">Returns:</span></dt><dd>The blob, used in the calculation of the NTLMv2 Response.</dd></dl>
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<h4>encryptNonce</h4>
<pre>private static byte[] encryptNonce(byte[] key,
byte[] nonce)</pre>
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<h4>ntHash</h4>
<pre>private static byte[] ntHash(java.lang.String password)
throws java.io.UnsupportedEncodingException</pre>
<div class="block">Creates the md4 hash of the unicode password. This is used as the DES
key when encrypting the nonce for NTLM challenge-response</div>
<dl><dt><span class="strong">Throws:</span></dt>
<dd><code>java.io.UnsupportedEncodingException</code></dd></dl>
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<h4>convertPassword</h4>
<pre>private static byte[] convertPassword(java.lang.String password)
throws java.io.UnsupportedEncodingException</pre>
<div class="block">Used by answerNtlmChallenge. We need the password converted to caps,
narrowed and padded/truncated to 14 chars...</div>
<dl><dt><span class="strong">Throws:</span></dt>
<dd><code>java.io.UnsupportedEncodingException</code></dd></dl>
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<h4>makeDESkey</h4>
<pre>private static byte[] makeDESkey(byte[] buf,
int off)</pre>
<div class="block">Turns a 7-byte DES key into an 8-byte one by adding parity bits. All
implementations of DES seem to want an 8-byte key.</div>
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