• apple

    Hi everybody!
    I'm facing a strange error when i try to generate Key-Pair to be used for encryption purposes.
    Either in linux or in windows, it is working perfectly with SUN JDK.
    But in RedHat GNUClASS+jamvm, it's wrong as follow.what should I to do ?
    Thanks and waiting your replies!

    -------------------------------------The error showing is:
    genKeyPair failed: java.lang.ArithmeticException: negative exponent
    java.lang.ArithmeticException: negative exponent
    at java.math.BigInteger.pow(BigInteger.java:1001)
    at gnu.java.security.key.dss.FIPS186.generateParameters(FIPS186.java:200)
    at gnu.java.security.key.dss.DSSKeyPairGenerator.generate(DSSKeyPairGenerator.java:305)
    at gnu.java.security.jce.sig.KeyPairGeneratorAdapter.generateKeyPair(KeyPairGeneratorAdapter.java:93)
    at java.security.KeyPairGenerator.genKeyPair(KeyPairGenerator.java:289)
    at cn.com.webinfo.security.RSA.generateKey(RSA.java:100)
    at cn.com.webinfo.stest.MainRSA.main(MainRSA.java:23)
    java.lang.NullPointerException
    at cn.com.webinfo.security.RSA.generateKey(RSA.java:102)
    at cn.com.webinfo.stest.MainRSA.main(MainRSA.java:23)
    Generating private key is failure!

    ----------------------------------------my code:
    MainRSA.java:23 RSA.generateKey("001","prikeyRSA.dat", "pubkeyRSA.dat");
    public static boolean generateKey(String id, String priFileName, String pubFileName) {
    try {
    KeyPairGenerator keygen = KeyPairGenerator.getInstance("RSA");
    SecureRandom secrand = new SecureRandom();
    secrand.setSeed(id.getBytes());
    keygen.initialize(1024, secrand);
    RSA.java:100 KeyPair keys = keygen.genKeyPair();

    RSA.java:102 PrivateKey prikey = keys.getPrivate();
    PublicKey pubkey = keys.getPublic();
    .........

    posted in technical issues read more
  • apple

    Hi !
    I also have the same matter, It's good , either in linux or in windows, with SUN JDK.
    But in RedHat GNUClASS+jamvm, it's wrong as follow.what should I to do ?
    Thank you !

    genKeyPair failed: java.lang.ArithmeticException: negative exponent
    java.lang.ArithmeticException: negative exponent
    at java.math.BigInteger.pow(BigInteger.java:1001)
    at gnu.java.security.key.dss.FIPS186.generateParameters(FIPS186.java:200)
    at gnu.java.security.key.dss.DSSKeyPairGenerator.generate(DSSKeyPairGenerator.java:305)
    at gnu.java.security.jce.sig.KeyPairGeneratorAdapter.generateKeyPair(KeyPairGeneratorAdapter.java:93)
    at java.security.KeyPairGenerator.genKeyPair(KeyPairGenerator.java:289)
    at cn.com.webinfo.security.RSA.generateKey(RSA.java:100)
    at cn.com.webinfo.stest.MainRSA.main(MainRSA.java:23)
    java.lang.NullPointerException
    at cn.com.webinfo.security.RSA.generateKey(RSA.java:102)
    at cn.com.webinfo.stest.MainRSA.main(MainRSA.java:23)
    Generating private key is failure!

    MainRSA.java:23 RSA.generateKey("001","prikeyRSA.dat", "pubkeyRSA.dat");
    public static boolean generateKey(String id, String priFileName, String pubFileName) {
    try {
    KeyPairGenerator keygen = KeyPairGenerator.getInstance("RSA");
    SecureRandom secrand = new SecureRandom();
    secrand.setSeed(id.getBytes());
    keygen.initialize(1024, secrand);
    RSA.java:100 KeyPair keys = keygen.genKeyPair();

    RSA.java:102 PrivateKey prikey = keys.getPrivate();
    PublicKey pubkey = keys.getPublic();
    .........

    posted in Off topic read more
Internal error.

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