Mega Code Archive
This class imports a key and a certificate into a keystore
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//package org.xmldap.util;
import java.io.ByteArrayInputStream;
import java.io.DataInputStream;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.security.KeyFactory;
import java.security.KeyStore;
import java.security.PrivateKey;
import java.security.cert.Certificate;
import java.security.cert.CertificateFactory;
import java.security.spec.PKCS8EncodedKeySpec;
import java.util.Collection;
/**
* ImportKey.java
*
* <p>
* This class imports a key and a certificate into a keystore (
* <code>$home/keystore.ImportKey</code>). If the keystore is already present,
* it is simply deleted. Both the key and the certificate file must be in
* <code>DER</code>-format. The key must be encoded with <code>PKCS#8</code>
* -format. The certificate must be encoded in <code>X.509</code>-format.
* </p>
*
* <p>
* Key format:
* </p>
* <p>
* <code>openssl pkcs8 -topk8 -nocrypt -in YOUR.KEY -out YOUR.KEY.der
* -outform der</code>
* </p>
* <p>
* Format of the certificate:
* </p>
* <p>
* <code>openssl x509 -in YOUR.CERT -out YOUR.CERT.der -outform
* der</code>
* </p>
* <p>
* Import key and certificate:
* </p>
* <p>
* <code>java comu.ImportKey YOUR.KEY.der YOUR.CERT.der</code>
* </p>
* <br />
*
* <p>
* <em>Caution:</em> the old <code>keystore.ImportKey</code>-file is deleted and
* replaced with a keystore only containing <code>YOUR.KEY</code> and
* <code>YOUR.CERT</code>. The keystore and the key has no password; they can be
* set by the <code>keytool -keypasswd</code>-command for setting the key
* password, and the <code>keytool -storepasswd</code>-command to set the
* keystore password.
* <p>
* The key and the certificate is stored under the alias <code>importkey</code>;
* to change this, use <code>keytool -keyclone</code>.
*
* Created: Fri Apr 13 18:15:07 2001 Updated: Fri Apr 19 11:03:00 2002
*
* @author Joachim Karrer, Jens Carlberg
* @version 1.1
**/
public class ImportKey {
/**
* <p>
* Creates an InputStream from a file, and fills it with the complete file.
* Thus, available() on the returned InputStream will return the full number
* of bytes the file contains
* </p>
*
* @param fname
* The filename
* @return The filled InputStream
* @exception IOException
* , if the Streams couldn't be created.
**/
private static InputStream fullStream(String fname) throws IOException {
FileInputStream fis = new FileInputStream(fname);
DataInputStream dis = new DataInputStream(fis);
byte[] bytes = new byte[dis.available()];
dis.readFully(bytes);
ByteArrayInputStream bais = new ByteArrayInputStream(bytes);
return bais;
}
/**
* <p>
* Takes two file names for a key and the certificate for the key, and
* imports those into a keystore. Optionally it takes an alias for the key.
* <p>
* The first argument is the filename for the key. The key should be in
* PKCS8-format.
* <p>
* The second argument is the filename for the certificate for the key.
* <p>
* If a third argument is given it is used as the alias. If missing, the key
* is imported with the alias importkey
* <p>
* The name of the keystore file can be controlled by setting the keystore
* property (java -Dkeystore=mykeystore). If no name is given, the file is
* named <code>keystore.ImportKey</code> and placed in your home directory.
*
* @param args
* [0] Name of the key file, [1] Name of the certificate file [2]
* Alias for the key.
**/
public static void main(String args[]) {
// change this if you want another password by default
String keypass = "password";
// change this if you want another alias by default
String defaultalias = "tomcat";
// change this if you want another keystorefile by default
String keystorename = null;
// parsing command line input
String keyfile = "";
String certfile = "";
if (args.length < 3 || args.length > 4) {
System.out
.println("Usage: java comu.ImportKey keystore keyfile certfile [alias]");
System.exit(0);
} else {
keystorename = args[0];
keyfile = args[1];
certfile = args[2];
if (args.length > 3)
defaultalias = args[3];
}
try {
// initializing and clearing keystore
KeyStore ks = KeyStore.getInstance("JKS", "SUN");
ks.load(null, keypass.toCharArray());
System.out.println("Using keystore-file : " + keystorename);
ks.store(new FileOutputStream(keystorename), keypass.toCharArray());
ks.load(new FileInputStream(keystorename), keypass.toCharArray());
// loading Key
InputStream fl = fullStream(keyfile);
byte[] key = new byte[fl.available()];
KeyFactory kf = KeyFactory.getInstance("RSA");
fl.read(key, 0, fl.available());
fl.close();
PKCS8EncodedKeySpec keysp = new PKCS8EncodedKeySpec(key);
PrivateKey ff = kf.generatePrivate(keysp);
// loading CertificateChain
CertificateFactory cf = CertificateFactory.getInstance("X.509");
InputStream certstream = fullStream(certfile);
Collection c = cf.generateCertificates(certstream);
Certificate[] certs = new Certificate[c.toArray().length];
if (c.size() == 1) {
certstream = fullStream(certfile);
System.out.println("One certificate, no chain.");
Certificate cert = cf.generateCertificate(certstream);
certs[0] = cert;
} else {
System.out.println("Certificate chain length: " + c.size());
certs = (Certificate[]) c.toArray(new Certificate[c.size()]);
}
// storing keystore
ks.setKeyEntry(defaultalias, ff, keypass.toCharArray(), certs);
System.out.println("Key and certificate stored.");
System.out.println("Alias:" + defaultalias + " Password:"
+ keypass);
ks.store(new FileOutputStream(keystorename), keypass.toCharArray());
} catch (Exception ex) {
ex.printStackTrace();
}
}
}// KeyStore
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