JavaCard OS

Hi everyone!
Today I used JCOP card to generate ECC key pair. I can create ECPrivateKey, ECPublicKey, KeyPair w/o any problems, but it throws exception CryptoException.ILLEGAL_VALUE when genKeyPair(). What's wrong with my card or my operation? I have no idea. Could you please tell me where I made the mistake? Much appreciated!

BTW, I found that JCAlgTest has encountered the same problem, pls check the test report here.

For JCOP card, you should set ECC domain parameters for both the public key and private key before genKeyPair().

FYI:
Check the code below to set the parameters.

horse dream wrote:For JCOP card, you should set ECC domain parameters for both the public key and private key before genKeyPair().

FYI:
Check the code below to set the parameters.

Code: Select all

pubKey.setFieldFP(p, (short) 0, (short) p.length);
pubKey.setA(a, (short) 0, (short) a.length);
pubKey.setB(b, (short) 0, (short) b.length);
pubKey.setG(g, (short) 0, (short) g.length);
pubKey.setR(n, (short) 0, (short) n.length);
pubKey.setK((short) 1);
priKey.setFieldFP(p, (short) 0, (short) p.length);
priKey.setA(a, (short) 0, (short) a.length);
priKey.setB(b, (short) 0, (short) b.length);
priKey.setG(g, (short) 0, (short) g.length);
priKey.setR(n, (short) 0, (short) n.length);
priKey.setK((short) 1);

@horse dream, thanks for your detailed reply! I have solved my problem according to your answer!