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// --- BEGIN COPYRIGHT BLOCK ---
// This program 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; version 2 of the License.
//
// This program 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.,
// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
//
// (C) 2007 Red Hat, Inc.
// All rights reserved.
// --- END COPYRIGHT BLOCK ---
// package com.netscape.cmstools;
import org.mozilla.jss.pkix.cmc.*;
import org.mozilla.jss.pkix.cms.*;
import org.mozilla.jss.pkix.cert.*;
import org.mozilla.jss.pkix.primitive.*;
import org.mozilla.jss.asn1.*;
import org.mozilla.jss.pkcs10.*;
import org.mozilla.jss.crypto.*;
import org.mozilla.jss.CryptoManager;
import org.mozilla.jss.crypto.CryptoToken;
import org.mozilla.jss.crypto.SignatureAlgorithm;
import org.mozilla.jss.crypto.DigestAlgorithm;
import org.mozilla.jss.crypto.X509Certificate;
import org.mozilla.jss.util.*;
import org.mozilla.jss.*;
import sun.misc.BASE64Encoder;
import sun.misc.*;
import java.io.*;
import java.util.*;
import com.netscape.cmscore.shares.*;
public class RecoverPin {
public static String getPassword(Hashtable shares) throws Exception
{
System.out.println("Share size '" + shares.size() + "'");
JoinShares j = new JoinShares(shares.size());
Enumeration e = shares.keys();
while (e.hasMoreElements()) {
String next = (String) e.nextElement();
System.out.println("Add share " + (int)(Integer.parseInt(next) + 1));
j.addShare(Integer.parseInt(next) + 1,
(byte[]) shares.get(next));
}
byte secret[] = j.recoverSecret();
String pwd = new String(secret);
return pwd;
}
public static byte[] resizeShare(byte share[]) {
byte data[] = new byte[share.length - 2];
for (int i = 2; i < share.length; i++) {
data[i - 2] = share[i];
}
return data;
}
public static Hashtable getShares(CryptoToken token,
Properties kra_mn_p) throws Exception
{
BufferedReader br = new BufferedReader( new InputStreamReader(System.in));
Hashtable v = new Hashtable();
Enumeration e = kra_mn_p.keys();
int n = Integer.parseInt((String)kra_mn_p.get("n"));
for (int i = 0; i < n; i++) {
String uid = (String)kra_mn_p.get("uid"+i);
System.out.println("Got uid '" + uid + "'");
String encrypted = (String)kra_mn_p.get("share"+i);
System.out.println("Got share '" + encrypted + "'");
BASE64Decoder decoder = new BASE64Decoder();
byte share[] = decoder.decodeBuffer(encrypted);
System.out.println("Got encrypted share length '" +
share.length + "'");
System.out.println("Please input password for " + uid + ":");
String pwd = br.readLine();
System.out.println("Got password '" + pwd + "'");
Cipher cipher = token.getCipherContext(
EncryptionAlgorithm.DES3_CBC_PAD);
byte iv[] = {0x01, 0x01, 0x01, 0x01, 0x01,
0x01, 0x01, 0x01};
Password pass = new Password(pwd.toCharArray());
KeyGenerator kg = token.getKeyGenerator(
PBEAlgorithm.PBE_SHA1_DES3_CBC);
PBEKeyGenParams kgp = new PBEKeyGenParams(pass,
iv, 5);
kg.initialize(kgp);
SymmetricKey sk = kg.generate();
cipher.initDecrypt(sk, new IVParameterSpec(iv));
byte dec[] = cipher.doFinal(share);
System.out.println("Got decrypted share length '" + dec.length + "'");
System.out.println("Got share[0] '" + dec[0] + "'");
System.out.println("Got share[1] '" + dec[1] + "'");
byte res[] = resizeShare(dec);
v.put(Integer.toString(i), res);
}
return v;
}
public static void main(String args[]) throws Exception
{
if (args.length != 4) {
System.out.println("Usage: RecoverPin <alias directory> <prefix> <password> <kra-mn.conf path>");
System.exit(0);
}
String alias = args[0];
String prefix = args[1];
String password = args[2];
String path_kra_mn = args[3];
CryptoManager.InitializationValues vals =
new CryptoManager.InitializationValues(alias,
prefix, prefix, "secmod.db");
CryptoManager.initialize(vals);
CryptoManager cm = CryptoManager.getInstance();
// load files into properties
Properties kra_mn_p = new Properties();
kra_mn_p.load(new FileInputStream(path_kra_mn));
CryptoToken token = cm.getInternalKeyStorageToken();
token.login(new Password(password.toCharArray()));
Hashtable shares = getShares(token, kra_mn_p);
String pwd = getPassword(shares);
System.out.println("=> Pin is '" + pwd + "'");
}
}
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