/* $Id: DDVCardService.java,v 1.1 2011/11/24 21:59:37 willuhn Exp $
This file is part of HBCI4Java
Copyright (C) 2001-2008 Stefan Palme
HBCI4Java is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
HBCI4Java is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
package org.kapott.hbci.smartcardio;
import org.kapott.hbci.exceptions.HBCI_Exception;
/**
* Abstrakter DDV-Cardservice fuer den DDVPCSC-Passport, basierend auf dem OCF-Code
* aus HBCI4Java 2.5.8.
*/
public abstract class DDVCardService extends HBCICardService
{
/**
* Liefert die Schluesseldaten.
* @return die Schluesseldaten.
*/
public abstract DDVKeyData[] readKeyData();
/**
* Erzeugt eine Signatur.
* @param data_l die zu signierenden Daten.
* @return die Signature,
*/
protected abstract byte[] calculateSignature(byte[] data_l);
/**
* Liefert die CID.
* @return die CID.
*/
public byte[] getCID()
{
return readRecordBySFI(HBCI_DDV_EF_ID, 0);
}
/**
* Liefert die Bank-Daten fuer den angegebenen Entry-Index.
* @param idx der Entry-Index.
* @return die Bank-Daten.
*/
public DDVBankData readBankData(int idx)
{
byte[] rawData = readRecordBySFI(HBCI_DDV_EF_BNK, idx);
if (rawData == null)
return null;
try
{
DDVBankData ret = new DDVBankData();
ret.recordnum = idx+1;
ret.shortname = new String(rawData,0,20,"ISO-8859-1").trim();
StringBuffer blz=new StringBuffer();
for (int i=0;i<4;i++)
{
// Linker Nibble ;)
// 4 Byte nach rechts verschoben
byte ch = rawData[20+i];
byte nibble=(byte)((ch>>4) & 0x0F);
if (nibble > 0x09)
nibble ^= 0x0F;
blz.append((char)(nibble + 0x30)); // In ASCII-Bereich verschieben
// Rechter Nibble
nibble=(byte)(ch & 0x0F);
if (nibble > 0x09)
nibble ^= 0x0F;
blz.append((char)(nibble + 0x30));
}
ret.blz=blz.toString();
ret.commType = rawData[24];
ret.commaddr = new String(rawData,25,28,"ISO-8859-1").trim();
ret.commaddr2 = new String(rawData,53,2, "ISO-8859-1").trim();
ret.country = new String(rawData,55,3, "ISO-8859-1").trim();
ret.userid = new String(rawData,58,30,"ISO-8859-1").trim();
return ret;
}
catch (HBCI_Exception e1)
{
throw e1;
}
catch (Exception e2)
{
throw new HBCI_Exception(e2);
}
}
/**
* Speichert die Bank-Daten auf die Karte.
* @param idx Entry-Index.
* @param bankData die Bank-Daten.
*/
public void writeBankData(int idx,DDVBankData bankData)
{
try
{
byte[] rawData=new byte[88];
System.arraycopy(expand(bankData.shortname,20),0, rawData,0, 20);
byte[] blzData=bankData.blz.getBytes("ISO-8859-1");
for (int i=0;i<4;i++)
{
byte ch1=(byte)(blzData[i<<1 ]-0x30);
byte ch2=(byte)(blzData[(i<<1)+1]-0x30);
if (ch1==2 && ch2==0) {
ch1^=0x0F;
}
rawData[20+i] = (byte)((ch1<<4)|ch2);
}
rawData[24]=(byte)bankData.commType;
System.arraycopy(expand(bankData.commaddr,28),0, rawData,25, 28);
System.arraycopy(expand(bankData.commaddr2,2),0, rawData,53, 2);
System.arraycopy(expand(bankData.country,3), 0, rawData,55, 3);
System.arraycopy(expand(bankData.userid,30), 0, rawData,58, 30);
updateRecordBySFI(HBCI_DDV_EF_BNK,idx,rawData);
}
catch (HBCI_Exception e1)
{
throw e1;
}
catch (Exception e2)
{
throw new HBCI_Exception(e2);
}
}
/**
* Liefert die Sig-ID.
* @return die Sig-ID.
*/
public int readSigId()
{
int ret = -1;
byte[] rawData=readRecordBySFI(HBCI_DDV_EF_SEQ, 0);
if (rawData!=null)
ret = ((rawData[0]<<8)&0xFF00) | (rawData[1]&0xFF);
return ret;
}
/**
* Speichert die Sig-ID.
* @param sigId die Sig-ID.
*/
public void writeSigId(int sigId)
{
byte[] rawData=new byte[2];
rawData[0]=(byte)((sigId>>8)&0xFF);
rawData[1]=(byte)(sigId&0xFF);
updateRecordBySFI(HBCI_DDV_EF_SEQ,0,rawData);
}
/**
* Signiert die Daten.
* @param data die zu signierenden Daten.
* @return die Signatur.
*/
public byte[] sign(byte[] data)
{
byte[] data_l=new byte[8];
byte[] data_r=new byte[12];
System.arraycopy(data,0,data_l,0,8);
System.arraycopy(data,8,data_r,0,12);
updateRecordBySFI(HBCI_DDV_EF_MAC,0,data_r);
return calculateSignature(data_l);
}
/**
* Liefert die Encryption-Keys.
* @param keynum Schluessel-Nummer.
* @return Encryption-Keys.
*/
public byte[][] getEncryptionKeys(int keynum)
{
byte[][] keys=new byte[2][16];
for (int i=0;i<2;i++)
{
byte[] challenge=getChallenge();
System.arraycopy(challenge,0,keys[0],i<<3,8);
byte[] enc=internalAuthenticate(keynum,challenge);
System.arraycopy(enc,0,keys[1],i<<3,8);
}
return keys;
}
/**
* Entschluesselt die Daten.
* @param keynum die Schluessel-Nummer.
* @param encdata die verschluesselten Daten.
* @return die entschluesselten Daten.
*/
public byte[] decrypt(int keynum,byte[] encdata)
{
byte[] plaindata=new byte[16];
for (int i=0;i<2;i++)
{
byte[] enc=new byte[8];
System.arraycopy(encdata,i<<3,enc,0,8);
byte[] plain=internalAuthenticate(keynum,enc);
System.arraycopy(plain,0,plaindata,i<<3,8);
}
return plaindata;
}
}