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| <title>Secure Password Obfuscation</title><link rel="stylesheet" type="text/css" href="css/docbook.css"><meta name="generator" content="DocBook XSL Stylesheets V1.79.1"><meta name="keywords" content="jetty, servlet, servlet-api, cometd, http, websocket, eclipse, maven, java, server, software"><link rel="home" href="index.html" title="Jetty"><link rel="up" href="configuring-security.html" title="Chapter 7. Configuring Security"><link rel="prev" href="serving-aliased-files.html" title="Aliased Files and Symbolic links"><link rel="next" href="setting-port80-access.html" title="Setting Port 80 Access for a Non-Root User"><link xmlns:jfetch="java:org.eclipse.jetty.xslt.tools.JavaSourceFetchExtension" xmlns:fetch="java:org.eclipse.jetty.xslt.tools.SourceFetchExtension" xmlns:d="http://docbook.org/ns/docbook" xmlns:l="http://docbook.sourceforge.net/xmlns/l10n/1.0" xmlns:xslthl="http://xslthl.sf.net" xmlns:gcse="http://www.google.com" xmlns:date="http://exslt.org/dates-and-times" rel="shortcut icon" href="images/favicon.ico"><link rel="stylesheet" href="css/highlighter/foundation.css"><script src="js/highlight.pack.js"></script><script> |
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| Version: 9.4.28-SNAPSHOT</span></td><td style="width: 50%"></td></tr></table><div xmlns:jfetch="java:org.eclipse.jetty.xslt.tools.JavaSourceFetchExtension" xmlns:fetch="java:org.eclipse.jetty.xslt.tools.SourceFetchExtension" xmlns:d="http://docbook.org/ns/docbook" xmlns:l="http://docbook.sourceforge.net/xmlns/l10n/1.0" xmlns:xslthl="http://xslthl.sf.net" xmlns:gcse="http://www.google.com" xmlns:date="http://exslt.org/dates-and-times" class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Secure Password Obfuscation</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="serving-aliased-files.html"><i class="fa fa-chevron-left" aria-hidden="true"></i> Previous</a> </td><th width="60%" align="center">Chapter 7. Configuring Security<br><a accesskey="p" href="index.html"><i class="fa fa-home" aria-hidden="true"></i> Home</a></th><td width="20%" align="right"> <a accesskey="n" href="setting-port80-access.html">Next <i class="fa fa-chevron-right" aria-hidden="true"></i></a></td></tr></table><hr></div><div xmlns:jfetch="java:org.eclipse.jetty.xslt.tools.JavaSourceFetchExtension" xmlns:fetch="java:org.eclipse.jetty.xslt.tools.SourceFetchExtension" xmlns:d="http://docbook.org/ns/docbook" xmlns:l="http://docbook.sourceforge.net/xmlns/l10n/1.0" xmlns:xslthl="http://xslthl.sf.net" xmlns:gcse="http://www.google.com" xmlns:date="http://exslt.org/dates-and-times" class="jetty-callout"><h5 class="callout"><a href="http://www.webtide.com/">Contact the core Jetty developers at |
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| </p></div><div class="section"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="configuring-security-secure-passwords"></a>Secure Password Obfuscation</h2></div></div></div><p>There are many places where you might want to use and store a password, for example for the SSL connectors and user passwords in realms.</p><p>Passwords can be stored in clear text, obfuscated, checksummed or encrypted in order of increasing security. |
| The choice of method to secure a password depends on where you are using the password. |
| In some cases, such as keystore passwords and <code class="literal">DIGEST</code> authentication, the system must retrieve the original password, which requires the obfuscation method. |
| The drawback of the obfuscation algorithm is that it protects passwords <span class="strong"><strong>from casual viewing only.</strong></span></p><p>When the stored password is compared to one a user enters, the handling code can apply the same algorithm that secures the stored password to the user input and compare results, making password authentication more secure.</p><p>The class <code class="literal">org.eclipse.jetty.util.security.Password</code> can be used to generate all varieties of passwords.</p><p>Run it without arguments to see usage instructions:</p><div class="screenexample"><pre class="screen">$ java -cp lib/jetty-util-9.4.28-SNAPSHOT.jar org.eclipse.jetty.util.security.Password |
| |
| Usage - java org.eclipse.jetty.util.security.Password [<user>] <password> |
| If the password is ?, the user will be prompted for the password</pre></div><p>For example, to generate a secured version of the password <code class="literal">password</code> for the user <code class="literal">username</code>:</p><div class="screenexample"><pre class="screen">$ java -cp ../lib/jetty-util-9.4.28-SNAPSHOT.jar org.eclipse.jetty.util.security.Password username password |
| 2017-12-13 11:19:27.928:INFO::main: Logging initialized @95ms to org.eclipse.jetty.util.log.StdErrLog |
| password |
| OBF:1v2j1uum1xtv1zej1zer1xtn1uvk1v1v |
| MD5:5f4dcc3b5aa765d61d8327deb882cf99 |
| CRYPT:usjRS48E8ZADM</pre></div><p>If using a external tool to create/verify the MD5 hash (such as <code class="literal">md5sum</code> or <code class="literal">md5</code>), be sure to verify a carriage return (CR) or new line is not added. |
| For example:</p><div class="screenexample"><pre class="screen">//With a CR included |
| $ echo password | md5sum |
| 286755fad04869ca523320acce0dc6a4 *- |
| |
| //Using the `-n` option to exclude a new line from being added. |
| $ echo -n password | md5sum |
| 5f4dcc3b5aa765d61d8327deb882cf99 *-</pre></div><div class="blockquote"><blockquote class="blockquote"><div xmlns:jfetch="java:org.eclipse.jetty.xslt.tools.JavaSourceFetchExtension" xmlns:fetch="java:org.eclipse.jetty.xslt.tools.SourceFetchExtension" xmlns:d="http://docbook.org/ns/docbook" xmlns:l="http://docbook.sourceforge.net/xmlns/l10n/1.0" xmlns:xslthl="http://xslthl.sf.net" xmlns:gcse="http://www.google.com" xmlns:date="http://exslt.org/dates-and-times" class="important" style="margin-left: 0.5in; margin-right: 0.5in;"><h3 class="title"><i class="fa fa-plus" aria-hidden="true"></i> Important</h3><p>When using the <code class="literal">DIGEST</code> method in tandem with an MD5 hash, you must hash the entire <code class="literal">user:realm:password</code> string or you will encounter issues with authenticating.</p></div></blockquote></div><div class="screenexample"><pre class="screen">$ java -cp ../lib/jetty-util-9.4.7.v20170914.jar org.eclipse.jetty.util.security.Password username username:realm:password |
| 2017-12-13 11:34:33.263:INFO::main: Logging initialized @97ms to org.eclipse.jetty.util.log.StdErrLog |
| username:realm:password |
| OBF:1w281yf41v1x1z7e1xmi1v1p1tvv1v901c3j1x8k1ugo1ri71uh21x8a1c3j1v9m1tv71v2p1xms1z7o1v2h1yf21w1a |
| MD5:66999343281b2624585fd58cc9d36dfc |
| CRYPT:usulxZfApLefk |
| |
| $ echo -n username:realm:password | md5sum |
| 66999343281b2624585fd58cc9d36dfc *-</pre></div><p>You can now cut and paste whichever secure version you choose into your configuration file or Java code.</p><p>For example, the last line below shows how you would implement the encrypted password generated above into the properties file for a <code class="literal">LoginService</code>:</p><pre xmlns:jfetch="java:org.eclipse.jetty.xslt.tools.JavaSourceFetchExtension" xmlns:fetch="java:org.eclipse.jetty.xslt.tools.SourceFetchExtension" xmlns:d="http://docbook.org/ns/docbook" xmlns:l="http://docbook.sourceforge.net/xmlns/l10n/1.0" xmlns:xslthl="http://xslthl.sf.net" xmlns:gcse="http://www.google.com" xmlns:date="http://exslt.org/dates-and-times"><code>admin: CRYPT:ad1ks..kc.1Ug,server-administrator,content-administrator,admin |
| other: OBF:1xmk1w261u9r1w1c1xmq |
| guest: guest,read-only |
| me:CRYPT:me/ks90E221EY</code></pre><div class="blockquote"><blockquote class="blockquote"><div xmlns:jfetch="java:org.eclipse.jetty.xslt.tools.JavaSourceFetchExtension" xmlns:fetch="java:org.eclipse.jetty.xslt.tools.SourceFetchExtension" xmlns:d="http://docbook.org/ns/docbook" xmlns:l="http://docbook.sourceforge.net/xmlns/l10n/1.0" xmlns:xslthl="http://xslthl.sf.net" xmlns:gcse="http://www.google.com" xmlns:date="http://exslt.org/dates-and-times" class="tip" style="margin-left: 0.5in; margin-right: 0.5in;"><h3 class="title"><i class="fa fa-lightbulb-o" aria-hidden="true"></i> Tip</h3><p>Don’t forget to also copy the OBF:, MD5: or CRYPT: prefix on the generated password. It will not be usable by Jetty without it.</p></div></blockquote></div><p>You can also use obfuscated passwords in Jetty xml files where a plain text password is required. |
| Here’s an example setting the password for a JDBC Datasource with obfuscation:</p><pre xmlns:jfetch="java:org.eclipse.jetty.xslt.tools.JavaSourceFetchExtension" xmlns:fetch="java:org.eclipse.jetty.xslt.tools.SourceFetchExtension" xmlns:d="http://docbook.org/ns/docbook" xmlns:l="http://docbook.sourceforge.net/xmlns/l10n/1.0" xmlns:xslthl="http://xslthl.sf.net" xmlns:gcse="http://www.google.com" xmlns:date="http://exslt.org/dates-and-times"><code> <New id="DSTest" class="org.eclipse.jetty.plus.jndi.Resource"> |
| <Arg></Arg> |
| <Arg>jdbc/DSTest</Arg> |
| <Arg> |
| <New class="com.jolbox.bonecp.BoneCPDataSource"> |
| <Set name="driverClass">com.mysql.jdbc.Driver</Set> |
| <Set name="jdbcUrl">jdbc:mysql://localhost:3306/foo</Set> |
| <Set name="username">dbuser</Set> |
| <Set name="password"> |
| <Call class="org.eclipse.jetty.util.security.Password" name="deobfuscate"> |
| <Arg>OBF:1ri71v1r1v2n1ri71shq1ri71shs1ri71v1r1v2n1ri7</Arg> |
| </Call> |
| </Set> |
| <Set name="minConnectionsPerPartition">5</Set> |
| <Set name="maxConnectionsPerPartition">50</Set> |
| <Set name="acquireIncrement">5</Set> |
| <Set name="idleConnectionTestPeriod">30</Set> |
| </New> |
| </Arg> |
| </New></code></pre></div><script type="text/javascript"> |
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