Our Online Store have the new products: RFID antenna board. Currently it can work with JC10M24R and JCOP4 card chips.
Compared with normal cards, the antenna board module has a smaller size and fixed holes, which is easy to integrate in the IOT(Internet Of Things) project.

Encounter error 6F 00 when importing RSA Private Key

JavaCard Applet Development Related Questions and Answers.
nikonai
Posts: 17
Joined: Mon Feb 22, 2016 4:37 am
Points :177
Contact:

Encounter error 6F 00 when importing RSA Private Key

Post by nikonai » Tue Oct 03, 2017 1:11 am

I am trying to import a 1024 bit RSA private CRT key from a java application, but I cannot get it to work, I only got 6F 00 error code.

Need it convert to hex-bytes? How do I convert it? Any help is much appreciated.

Here is section of my code:

Code: Select all

final static byte SET_PRIVATE_KEY= (byte) 0x22;
private RSAPrivateCrtKey PrivateRSAKey1024;
private RSAPublicKey PublicRSAKey1024;
private static Cipher cipher;
...
cipher = Cipher.getInstance(Cipher.ALG_RSA_PKCS1, false );
PrivateRSAKey1024 = (RSAPrivateCrtKey) KeyBuilder.buildKey(KeyBuilder.TYPE_RSA_CRT_PRIVATE, (short)1024, false);
...
case SET_PRIVATE_KEY:     processSetPrivateKeyCRT(apdu);
                                             return;
...
private void processSetPrivateKeyCRT(APDU apdu)
     {
          byte baAPDUBuffer[] = apdu.getBuffer();         
 
         // get APDU data
         apdu.setIncomingAndReceive();
                   
          byte P1 = baAPDUBuffer[ISO7816.OFFSET_P1];
         
          short sLc = (short)(baAPDUBuffer[ISO7816.OFFSET_LC] & 0x00FF);
                   
          switch (P1)     {
          case 0x00: // Set P
               PrivateRSAKey1024.setP(baAPDUBuffer, ISO7816.OFFSET_CDATA, sLc);
               break;
          case 0x01: // Set Q
               PrivateRSAKey1024.setQ(baAPDUBuffer, ISO7816.OFFSET_CDATA, sLc);
               break;
          case 0x02: // Set dP
               PrivateRSAKey1024.setDP1(baAPDUBuffer, ISO7816.OFFSET_CDATA, sLc);
               break;
          case 0x03: // Set dQ
               PrivateRSAKey1024.setDQ1(baAPDUBuffer, ISO7816.OFFSET_CDATA, sLc);
               break;
          case 0x04: // Set invQ
               PrivateRSAKey1024.setPQ(baAPDUBuffer, ISO7816.OFFSET_CDATA, sLc);
               break;
          default:
               ISOException.throwIt(ISO7816.SW_WRONG_P1P2);
          }         
     }

corleoner
Posts: 15
Joined: Fri Dec 11, 2015 2:22 am
Points :92
Contact:

Re: Encounter error 6F 00 when importing RSA Private Key

Post by corleoner » Tue Oct 03, 2017 7:11 am

Firstly you should find out which line throws the exception by using try/catch clause.

nikonai
Posts: 17
Joined: Mon Feb 22, 2016 4:37 am
Points :177
Contact:

Re: Encounter error 6F 00 when importing RSA Private Key

Post by nikonai » Tue Oct 03, 2017 6:36 pm

It seems that I found the problem. It is the conversion of the BigInteger value into a hex byte. I will try to fix this now.

Post Reply Previous topicNext topic

Who is online

Users browsing this forum: No registered users and 38 guests

JavaCard OS : Disclaimer