- All Superinterfaces:
- Key, PrivateKey, RSAKey, Serializable
- All Known Subinterfaces:
- RSAMultiPrimePrivateCrtKey, RSAPrivateCrtKey
- See Also:
- Top Examples, Source Code
BigInteger getPrivateExponent()
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- Description Add your codes or notes Search More Java Examples
[1558]How to export the first available key entry from a JKS key store and import it into a PKCS#12 key store
By Anonymous on 2005/10/07 05:21:54 Rate
//Here's an example of how to export the first available key entry from a JKS key store and import it into a PKCS#12 key store:
import java.security.cert.*;
import java.security.*;
import java.security.interfaces.RSAPrivateKey;
import java.io.*;
public class JKS2PKCS12
{
static String JKS_FILENAME = "mykeystore.jks";
static char [ ] JKS_PASSWORD = "secret".toCharArray ( ) ;
static String PKCS12_FILENAME = "mynewkeystore.p12";
static char [ ] PKCS12_PASSWORD = "secret".toCharArray ( ) ;
static RSAPrivateKey PRIVATE_KEY = null;
static X509Certificate [ ] CERT_CHAIN = null;
static public void main ( String [ ] args )
{
try {
exportFromJKS ( ) ;
importIntoPKCS12 ( ) ;
} catch ( Throwable t ) {
t.printStackTrace ( ) ;
System.err.println ( "Prog failed. Exiting..." ) ;
}
}
static void exportFromJKS ( )
throws Exception
{
//Load the JKS key store.
KeyStore ks = KeyStore.getInstance ( "JKS" ) ;
FileInputStream fis = new FileInputStream ( JKS_FILENAME ) ;
ks.load ( fis, JKS_PASSWORD ) ;
fis.close ( ) ;
//Get first available key entry from the JKS file.
String alias;
for ( java.util.Enumeration e = ks.aliases ( ) ; e.hasMoreElements ( ) ; )
{
alias = ( String ) e.nextElement ( ) ;
if ( ks.isKeyEntry ( alias ) )
{
PRIVATE_KEY = ( RSAPrivateKey ) ks.getKey ( alias, JKS_PASSWORD ) ;
java.security.cert.Certificate [ ] chain = ks.getCertificateChain ( alias ) ;
CERT_CHAIN = new X509Certificate [ chain.length ] ;
for ( int i = 0; i < chain.length; i++ )
CERT_CHAIN [ i ] = ( X509Certificate ) chain [ i ] ;
System.out.println ( "Exporting key entry with alias: " + alias ) ;
break;
}
}
if ( CERT_CHAIN == null )
throw new Exception ( "Sorry, no key entry found in JKS file: " + JKS_FILENAME ) ;
}
static void importIntoPKCS12 ( )
throws Exception
{
//Create a PKCS#12 key store.
KeyStore ks = KeyStore.getInstance ( "pkcs12" ) ;
ks.load ( null, null ) ;
//Import/insert the exported key entry into PKCS#12 key store.
ks.setKeyEntry ( "", PRIVATE_KEY, PKCS12_PASSWORD, CERT_CHAIN ) ;
//Save key store on disk.
FileOutputStream fos = new FileOutputStream ( PKCS12_FILENAME ) ;
ks.store ( fos, PKCS12_PASSWORD ) ;
fos.close ( ) ;
System.out.println ( "Import of key entry into PKCS#12 key store succeeded." ) ;
}
}
static final long serialVersionUID
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