Hi,
I tried various things and now I have another doubt. When I am loading the
private key generated of RSA algo type, am I supposed to use write binary file or
any other way specifically for loading private key file into card is there.
A line of guidance pls....
Reg,
Latha
latha wrote:
> Hi,
> I tried to use setkey and then the cryptoupdate thru rsaprivatekey object.
> When I don't return any value(after using setkey) or even if I return a
> value, it returns only 6fb8. This status code specifies that the data is
> returned which is of length b8. When I try to use getResponse, it returns me
> 6d00. But I couldn't understand what happens to the data which I return.
>
> Kindly give the suggestion/solution,
>
> I have attached the code too.
>
> Thnx for ur time allocation,
>
> Latha
>
> PN: Have anybody worked with Cyberflex Access 16K card -
> encryption/decryption using asymmetric keys. If so, can u kindly give a
> basic guidance for me?
>
> private void encrypt(APDU apdu)
> {
> buffer = apdu.getBuffer();
> byte numBytes = buffer[ISO.OFFSET_LC];
> byte[] pin = new byte[4];
> pin[0] = 0x00;
> pin[1] = 0x00;
> pin[2] = 0x00;
> pin[3] = 0x00;
> if (ownerpin.check(pin, (byte)0, (byte)4) == false)
> ISOException.throwIt(swVerificationFailed);
>
> byte tempStore[] = new byte[numBytes];
> byte byteRead = (byte)(apdu.setIncomingAndReceive());
> if ((numBytes != byteRead))
> ISOException.throwIt(ISO.SW_WRONG_LENGTH);
>
> Util.arrayCopy(buffer, (short) ISO.OFFSET_CDATA, tempStore,
> (short) 0,(short) buffer[ISO.OFFSET_LC]);
>
> CyberflexFile.selectFile((short)0x3f00);
> byte selfile = CyberflexFile.selectFile((short)1235);
> CyberflexOS os = new CyberflexOS();
> byte readdata = os.readBinaryFile (fileoutbuffer, (short)0, (short)0,
> (short) 355);
>
> rsakey.setKey(fileoutbuffer,(short) 0);
> boolean init = rsakey.isInitialized();
> // rsakey.cryptoUpdate (tempStore, (short) 0, (short) 1, outbuffer, (short)
> 0);
> // Util.arrayCopy(outbuffer,(short) 0, buffer, (short)0, (short)
> (outbuffer.length));
>
> short le = apdu.setOutgoing();
> apdu.setOutgoingLength((short)1);
> if (init == true)
> buffer[0] =(byte)0;
> else
> buffer[0] =(byte)1;
> apdu.sendBytes((short) 0, (short)1);
>
> }
>
> Jim Rees wrote:
>
> > You want AsymKey.cryptoUpdate. This should be described in the Cyberflex
> > manual, which you can get from Schlumberger's web site.
> > ***************************************************************
> > Unix Smart Card Developers - M.U.S.C.L.E.
> > (Movement for the Use of Smart Cards in a Linux Environment)
> > http://www.linuxnet.com/
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>
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