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    <p>A portion of code originally from Example Depot for listing all of the aliases in a key store:</p> <pre><code> // Load input stream into keystore keystore.load(is, password.toCharArray()); // List the aliases Enumeration aliases = keystore.aliases(); for (; aliases.hasMoreElements(); ) { String alias = (String)aliases.nextElement(); // Does alias refer to a private key? boolean b = keystore.isKeyEntry(alias); // Does alias refer to a trusted certificate? b = keystore.isCertificateEntry(alias); } </code></pre> <p>The exporting of private keys came up on the <a href="http://forums.sun.com/thread.jspa?threadID=154587&amp;start=15&amp;tstart=0" rel="noreferrer">Sun forums</a> a couple of months ago, and <a href="http://forums.sun.com/profile.jspa?userID=505275" rel="noreferrer">u:turingcompleter</a> came up with a DumpPrivateKey class to stitch into your app.</p> <pre><code>import java.io.FileInputStream; import java.security.Key; import java.security.KeyStore; import sun.misc.BASE64Encoder; public class DumpPrivateKey { /** * Provides the missing functionality of keytool * that Apache needs for SSLCertificateKeyFile. * * @param args &lt;ul&gt; * &lt;li&gt; [0] Keystore filename. * &lt;li&gt; [1] Keystore password. * &lt;li&gt; [2] alias * &lt;/ul&gt; */ static public void main(String[] args) throws Exception { if(args.length &lt; 3) { throw new IllegalArgumentException("expected args: Keystore filename, Keystore password, alias, &lt;key password: default same tha n keystore"); } final String keystoreName = args[0]; final String keystorePassword = args[1]; final String alias = args[2]; final String keyPassword = getKeyPassword(args,keystorePassword); KeyStore ks = KeyStore.getInstance("jks"); ks.load(new FileInputStream(keystoreName), keystorePassword.toCharArray()); Key key = ks.getKey(alias, keyPassword.toCharArray()); String b64 = new BASE64Encoder().encode(key.getEncoded()); System.out.println("-----BEGIN PRIVATE KEY-----"); System.out.println(b64); System.out.println("-----END PRIVATE KEY-----"); } private static String getKeyPassword(final String[] args, final String keystorePassword) { String keyPassword = keystorePassword; // default case if(args.length == 4) { keyPassword = args[3]; } return keyPassword; } } </code></pre> <p>Note: this use Sun package, <a href="http://java.sun.com/products/jdk/faq/faq-sun-packages.html" rel="noreferrer">which is a "bad thing"</a>.<br> If you can download <a href="http://commons.apache.org/codec/index.html" rel="noreferrer">apache commons code</a>, here is a version which will compile without warning:</p> <pre><code>javac -classpath .:commons-codec-1.4/commons-codec-1.4.jar DumpPrivateKey.java </code></pre> <p>and will give the same result:</p> <pre><code>import java.io.FileInputStream; import java.security.Key; import java.security.KeyStore; //import sun.misc.BASE64Encoder; import org.apache.commons.codec.binary.Base64; public class DumpPrivateKey { /** * Provides the missing functionality of keytool * that Apache needs for SSLCertificateKeyFile. * * @param args &lt;ul&gt; * &lt;li&gt; [0] Keystore filename. * &lt;li&gt; [1] Keystore password. * &lt;li&gt; [2] alias * &lt;/ul&gt; */ static public void main(String[] args) throws Exception { if(args.length &lt; 3) { throw new IllegalArgumentException("expected args: Keystore filename, Keystore password, alias, &lt;key password: default same tha n keystore"); } final String keystoreName = args[0]; final String keystorePassword = args[1]; final String alias = args[2]; final String keyPassword = getKeyPassword(args,keystorePassword); KeyStore ks = KeyStore.getInstance("jks"); ks.load(new FileInputStream(keystoreName), keystorePassword.toCharArray()); Key key = ks.getKey(alias, keyPassword.toCharArray()); //String b64 = new BASE64Encoder().encode(key.getEncoded()); String b64 = new String(Base64.encodeBase64(key.getEncoded(),true)); System.out.println("-----BEGIN PRIVATE KEY-----"); System.out.println(b64); System.out.println("-----END PRIVATE KEY-----"); } private static String getKeyPassword(final String[] args, final String keystorePassword) { String keyPassword = keystorePassword; // default case if(args.length == 4) { keyPassword = args[3]; } return keyPassword; } } </code></pre> <p>You can use it like so:</p> <pre><code>java -classpath .:commons-codec-1.4/commons-codec-1.4.jar DumpPrivateKey $HOME/.keystore changeit tomcat </code></pre>
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    1. POHow do I list / export private keys from a keystore?
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    1. USGlenn Bech
    1. USConroyP
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    1. POHow do I list / export private keys from a keystore?
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    1. COThis worked great. I had a customer that created a certificate request using the tomcat instructions, so the private key was installed in they keystore. I needed it to work with apache.
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    2. COA year and a bit later and you've solved someone else's problem (i.e. mine). Good job! :)
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      1. USBrian Beckett
    3. COActually, This should be updated with an additional parameter: [3] Key password and the line `Key key = ks.getKey(args[2], args[1].toCharArray());` should read `Key key = ks.getKey(args[2], args[3].toCharArray());`. The original code assumes that the KEY password is the same as the KEYSTORE password, when they are not necessarily identical.
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