KeyStore Persistence

[girishprabhakar]

Hi,

i have developed a code for encryption and decryption of credit card number.
For this i am using java.security.K eyStore.

I have created public and private keys and a certificate and stored them in this KeyStore. I am able to retreive the keys and certificate from the keystore,.
BUT i a not able to store this keystore ( or make it persist).

I need to persist this keystore so that i can load it in other file and extract the information from it.

Please tell me how to store this keystore.


I am using this code :




com.ibm.securit y.x509.CertAndK eyGen keypair;

keypair = new com.ibm.securit y.x509.CertAndK eyGen("RSA",
"MD5WithRSA ");
com.ibm.securit y.x509.X500Name x500Name;

x500Name = new com.ibm.securit y.x509.X500Name ("IGEL RemoteManager",
"IGEL Technology GmbH", "IGEL Technology GmbH", "DE");
keypair.generat e(1024);
PrivateKey thisPrivateKey = keypair.getPriv ateKey();
PublicKey thisPublicKey = keypair.getPubl icKey();
System.out.prin tln("Private Key : " + thisPrivateKey) ;
System.out.prin tln("Private Key : " + thisPublicKey);
java.security.c ert.X509Certifi cate[] chain = new java.security.c ert.X509Certifi cate[1];

chain[0] = keypair
.getSelfCertifi cate(x500Name, 7000 * 24 * 60 * 60);

System.out.prin tln("chain " + chain[0]);
Key key = (Key) (thisPrivateKey );
//Certificate cert = (Certificate)(c hain[0]);
String str = "ABC";
char ch[] = str.toCharArray ();

KeyStore ks;

ks = KeyStore.getIns tance(KeyStore. getDefaultType( ));
// String keyStoreType = KeyStore.getDef aultType();
// System.out.prin tln("keyStoreTy pe is ---"+keyStoreType) ;
// Provider provider = ks.getProvider( );
// System.out.prin tln("Provider** *********"+prov ider);

ks.load(null, ch);



ks.setKeyEntry( "alias", key, ch, chain);
System.out.prin tln(ks.getCerti ficate("alias") );

FileOutputStrea m fos = new FileOutputStrea m("d:/Girish2.keystor e");
ks.store(fos, ch);
fos.close();
System.out.prin tln("KeyStore is **************" +ks.toString()) ;

X509Certificate car = (com.ibm.securi ty.x509.X509Cer tImpl) ks
.getCertificate ("alias");
//X509CertImpl car = ( X509CertImpl) ks.getCertifica te("alias");
System.out.prin tln("Certificat e is +++++++++++++++ " + car);

System.out.prin tln("********** ********" + ks.getKey("alia s", ch));

SecureRandom srandom = new SecureRandom();

Cipher cp;

cp = Cipher.getInsta nce("RSA/ECB/PKCS1Padding");

cp.init(Cipher. ENCRYPT_MODE, car, srandom);
// PrivateKey pkEntry = (PrivateKey)ks. getKey("testali as",ch1);

String input = "12345678901234 56";

byte[] inputBytes = input.getBytes( );

byte[] encryptedBytes;

encryptedBytes = cp.doFinal(inpu tBytes);
System.out.prin tln("certificat e--" + car);
System.out.prin tln("Encrypted Code-----" + encryptedBytes) ;

Random rand = new Random(1000);
Integer ixd = new Integer(rand.ne xtInt());
entityHome = (EncryptEntityH ome) PortableRemoteO bject.narrow(ob j,
EncryptEntityHo me.class);
encryptEntity = entityHome.crea te(new Integer(100));
encryptEntity.s etAlias("alias" );
encryptEntity.s etEncryptString (encryptedBytes .toString());
System.out.prin tln("Encrypt Entity is : " + encryptEntity);