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<div class="subTitle">org.owasp.dependencycheck.utils</div>
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<h2 title="Class Checksum" class="title">Class Checksum</h2>
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<li><a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">java.lang.Object</a></li>
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<pre>public final class <span class="strong">Checksum</span>
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extends <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></pre>
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<div class="block">Includes methods to generate the MD5 and SHA1 checksum.</div>
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<dl><dt><span class="strong">Author:</span></dt>
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<dd>Jeremy Long <jeremy.long@owasp.org></dd></dl>
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<td class="colFirst"><code>static byte[]</code></td>
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<td class="colLast"><code><strong><a href="../../../../org/owasp/dependencycheck/utils/Checksum.html#getChecksum(java.lang.String,%20java.io.File)">getChecksum</a></strong>(<a href="http://docs.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> algorithm,
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<a href="http://docs.oracle.com/javase/6/docs/api/java/io/File.html?is-external=true" title="class or interface in java.io">File</a> file)</code>
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<div class="block">
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Creates the cryptographic checksum of a given file using the specified algorithm.</div>
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</td>
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</tr>
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<tr class="rowColor">
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<td class="colFirst"><code>static <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
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<td class="colLast"><code><strong><a href="../../../../org/owasp/dependencycheck/utils/Checksum.html#getHex(byte[])">getHex</a></strong>(byte[] raw)</code>
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Converts a byte array into a hex string.</div>
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</td>
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<td class="colFirst"><code>static <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
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<td class="colLast"><code><strong><a href="../../../../org/owasp/dependencycheck/utils/Checksum.html#getMD5Checksum(java.io.File)">getMD5Checksum</a></strong>(<a href="http://docs.oracle.com/javase/6/docs/api/java/io/File.html?is-external=true" title="class or interface in java.io">File</a> file)</code>
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<div class="block">Calculates the MD5 checksum of a specified file.</div>
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</td>
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<tr class="rowColor">
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<td class="colFirst"><code>static <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
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<td class="colLast"><code><strong><a href="../../../../org/owasp/dependencycheck/utils/Checksum.html#getSHA1Checksum(java.io.File)">getSHA1Checksum</a></strong>(<a href="http://docs.oracle.com/javase/6/docs/api/java/io/File.html?is-external=true" title="class or interface in java.io">File</a> file)</code>
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<div class="block">Calculates the SHA1 checksum of a specified file.</div>
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<h4>getChecksum</h4>
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<pre>public static byte[] getChecksum(<a href="http://docs.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> algorithm,
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<a href="http://docs.oracle.com/javase/6/docs/api/java/io/File.html?is-external=true" title="class or interface in java.io">File</a> file)
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throws <a href="http://docs.oracle.com/javase/6/docs/api/java/security/NoSuchAlgorithmException.html?is-external=true" title="class or interface in java.security">NoSuchAlgorithmException</a>,
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<a href="http://docs.oracle.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre>
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<div class="block"><p>
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Creates the cryptographic checksum of a given file using the specified algorithm.</p></div>
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<dl><dt><span class="strong">Parameters:</span></dt><dd><code>algorithm</code> - the algorithm to use to calculate the checksum</dd><dd><code>file</code> - the file to calculate the checksum for</dd>
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<dt><span class="strong">Returns:</span></dt><dd>the checksum</dd>
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<dt><span class="strong">Throws:</span></dt>
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<dd><code><a href="http://docs.oracle.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code> - when the file does not exist</dd>
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<dd><code><a href="http://docs.oracle.com/javase/6/docs/api/java/security/NoSuchAlgorithmException.html?is-external=true" title="class or interface in java.security">NoSuchAlgorithmException</a></code> - when an algorithm is specified that does not exist</dd></dl>
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<a name="getMD5Checksum(java.io.File)">
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<h4>getMD5Checksum</h4>
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<pre>public static <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> getMD5Checksum(<a href="http://docs.oracle.com/javase/6/docs/api/java/io/File.html?is-external=true" title="class or interface in java.io">File</a> file)
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throws <a href="http://docs.oracle.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a>,
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<a href="http://docs.oracle.com/javase/6/docs/api/java/security/NoSuchAlgorithmException.html?is-external=true" title="class or interface in java.security">NoSuchAlgorithmException</a></pre>
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<div class="block">Calculates the MD5 checksum of a specified file.</div>
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<dl><dt><span class="strong">Parameters:</span></dt><dd><code>file</code> - the file to generate the MD5 checksum</dd>
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<dt><span class="strong">Returns:</span></dt><dd>the hex representation of the MD5 hash</dd>
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<dt><span class="strong">Throws:</span></dt>
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<dd><code><a href="http://docs.oracle.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code> - when the file passed in does not exist</dd>
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<dd><code><a href="http://docs.oracle.com/javase/6/docs/api/java/security/NoSuchAlgorithmException.html?is-external=true" title="class or interface in java.security">NoSuchAlgorithmException</a></code> - when the MD5 algorithm is not available</dd></dl>
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<a name="getSHA1Checksum(java.io.File)">
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<h4>getSHA1Checksum</h4>
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<pre>public static <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> getSHA1Checksum(<a href="http://docs.oracle.com/javase/6/docs/api/java/io/File.html?is-external=true" title="class or interface in java.io">File</a> file)
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throws <a href="http://docs.oracle.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a>,
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<a href="http://docs.oracle.com/javase/6/docs/api/java/security/NoSuchAlgorithmException.html?is-external=true" title="class or interface in java.security">NoSuchAlgorithmException</a></pre>
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<div class="block">Calculates the SHA1 checksum of a specified file.</div>
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<dl><dt><span class="strong">Parameters:</span></dt><dd><code>file</code> - the file to generate the MD5 checksum</dd>
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<dt><span class="strong">Returns:</span></dt><dd>the hex representation of the SHA1 hash</dd>
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<dt><span class="strong">Throws:</span></dt>
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<dd><code><a href="http://docs.oracle.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code> - when the file passed in does not exist</dd>
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<dd><code><a href="http://docs.oracle.com/javase/6/docs/api/java/security/NoSuchAlgorithmException.html?is-external=true" title="class or interface in java.security">NoSuchAlgorithmException</a></code> - when the SHA1 algorithm is not available</dd></dl>
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<a name="getHex(byte[])">
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<h4>getHex</h4>
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<pre>public static <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> getHex(byte[] raw)</pre>
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<div class="block"><p>
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Converts a byte array into a hex string.</p>
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<p>
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This method was copied from <a
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href="http://www.rgagnon.com/javadetails/java-0596.html">http://www.rgagnon.com/javadetails/java-0596.html</a></p></div>
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<dl><dt><span class="strong">Parameters:</span></dt><dd><code>raw</code> - a byte array</dd>
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<dt><span class="strong">Returns:</span></dt><dd>the hex representation of the byte array</dd></dl>
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