On-board RSA key generation on Cyberflex Access 64K V2 / Memory leak?

Question

The description of the Cyberflex Access 64K V2 card states that "On-board key generation RSA up to 2048 bit" (http://www.youcard.de/datenblaetter/chipkarten/DS%20Cyberflex_Access.pdf). So I assume that this implicates that it should somehow be able to instantiate a KeyPair object on which genKeyPair() can be called.
When I first tried to instantiate an Object either by using KeyBuilder.buildKey or KeyPair I just received an 0x6F00 error. After removing all of the other objects that were also instantiated I was able to create one Key object using KeyBuilder (RSAPrivateKey or RSAPublicKey). However, as soon as I tried to instantiate two Key objects at the same time I just received the 0x6F00 error again.
I create these objects by using:
private static RSAPublicKey pubKey;
private static RSAPrivateCrtKey privKey;
protected Foo() {
    pubKey = (RSAPublicKey) KeyBuilder.buildKey(KeyBuilder.TYPE_RSA_PUBLIC, KeyBuilder.LENGTH_RSA_1024, true);
    privKey = (RSAPrivateCrtKey) KeyBuilder.buildKey(KeyBuilder.TYPE_RSA_CRT_PRIVATE, KeyBuilder.LENGTH_RSA_1024, true);
    register();
}So it seems that there is not enough free (EEPROM) memory for both objects. Is this a known problem with the Cyberflex cards? Is there some workaround? Could it be possible that some former test-applets that I've used (and already deleted) on the card leaked some memory that is missing now?

Answer 1

I think that I've just found the problem. The value of "-nvDataLimit" in the install APDU that I've sent via gpshell was too low. It seems to work with a higher value.