APDUTool no such algorithm

Question

Hi everyone,
I try for a while to play with the apdutool and I can't get the following code working. Using debugging, I saw the CryptoException is thrown with NO_SUCH_ALGORITHM, so it seems the apdutool doesn't support this algorithm (notice that using 512-bit keys this works)
try {
     currentCertPublicKey = (RSAPublicKey) KeyBuilder.buildKey(
          KeyBuilder.TYPE_RSA_PUBLIC, KeyBuilder.LENGTH_RSA_1024,
          false); /* 512 -> OK */
} catch (CryptoException e) {
     switch (e.getReason()) {
     case CryptoException.NO_SUCH_ALGORITHM:
          ISOException.throwIt(e.getReason());
          break;
     default:
          ISOException.throwIt(e.getReason());
}Is there a way to make this work, using additional libraries or something? (nowadays, 512-bit RSA keys is pretty useless...)
Thanks in advance
Guillaume

Answer 1

Hi,
JCWDE and CREF have limitations on cryptographic algorithms and key sizes due to export restrictions. You will be stuck with 512 bit RSA keys until you have a real card or a different emulator (such as JCOP tools as mentioned). The limitations are outlined in the developer guide that is included in the JCDK.
Cheers,
Shane