Hi folks,
I've been trying to use the JSS APIs to encrypt and decrypt data using
an RSA Cipher but I keep getting an InvalidKeyException. Invalid key
type: org.mozilla.jss.pkcs11.PK11RSAPublicKey.
I have a sample that works with our own JCE provider and the JCE
provider from Bouncy Castle. I've been googling around trying to get
a straight answer on whether RSA Cipher is truly supported by JSS and
don't really see anything definite. So thought I would ask here.
Here is the sample code. As I said, it works fine with Bouncy Castle
and our own JCE provider implementation. The JSS web pages seem to
claim that RSA is a supported cipher type, and the getInstance
certainly works....
Any suggestions would be appreciated.
package jsse;
import java.io.File;
import java.security.KeyPair;
import java.security.KeyPairGenerator;
import java.security.Security;
import javax.crypto.Cipher;
import org.bouncycastle.jce.provider.BouncyCastleProvider;
import org.mozilla.jss.CryptoManager;
import org.mozilla.jss.crypto.AlreadyInitializedException;
import org.mozilla.jss.crypto.CryptoToken;
import org.mozilla.jss.util.Password;
public class TestRSA {
public static void main(String[] args) throws Exception {
Security.addProvider(new BouncyCastleProvider());
String dir = System.getProperty("java.home")+"./lib/security";
new File(dir).mkdirs();
CryptoManager.InitializationValues values = new
CryptoManager.InitializationValues(dir);
CryptoManager.initialize(values);
CryptoManager cm = CryptoManager.getInstance();
CryptoToken token = cm.getInternalKeyStorageToken();
Password pw = new Password(new char[]{ 'p', 'a', 's', 's', 'w',
'o',
'r', 'd' } );
cm.setPasswordCallback(pw);
try {
token.initPassword(pw, pw);
} catch (AlreadyInitializedException e) {}
token.login(pw);
byte[] plainText = new byte[53];
for (int i = 0; i < plainText.length; i++) {
plainText[i] = (byte) i;
}
KeyPairGenerator kpg = KeyPairGenerator.getInstance("RSA",
"Mozilla-
JSS");
kpg.initialize(512);
KeyPair BobKP = kpg.generateKeyPair();
// Alice send messasge to Bob
Cipher cipher = Cipher.getInstance("RSA", "Mozilla-JSS");
cipher.init(Cipher.ENCRYPT_MODE, BobKP.getPublic());
byte[] cipherText = cipher.doFinal(plainText);
// Bob decrypts message
cipher.init(Cipher.DECRYPT_MODE, BobKP.getPrivate());
byte[] result = cipher.doFinal(cipherText);
System.out.print("[");
for (int i = 0; i< result.length; i++) {
System.out.print(result[i] + ", ");
}
System.out.println("]");
}
}
And then the exception that is thrown
Exception in thread "main" java.security.InvalidKeyException: Invalid
key type: org.mozilla.jss.pkcs11.PK11RSAPublicKey
at
org.mozilla.jss.provider.javax.crypto.JSSCipherSpi.importKey(JSSCipherSpi.java:
123)
at
org.mozilla.jss.provider.javax.crypto.JSSCipherSpi.engineInit(JSSCipherSpi.java:
161)
at
org.mozilla.jss.provider.javax.crypto.JSSCipherSpi.engineInit(JSSCipherSpi.java:
270)
at javax.crypto.Cipher.init(DashoA12275)
at javax.crypto.Cipher.init(DashoA12275)
at jsse.TestRSA.main(TestRSA.java:47)
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