Examples with PrivateKey net.i2p.data.PrivateKey used on opensource projects

Example 11 with PrivateKey

use of net.i2p.data.PrivateKey in project i2p.i2p by i2p.

the class LoadRouterInfoJob method loadRouterInfo.

/**
 *  Loads router.info and either router.keys.dat or router.keys.
 *
 *  See CreateRouterInfoJob for file formats
 */
private void loadRouterInfo() {
    RouterInfo info = null;
    File rif = new File(getContext().getRouterDir(), CreateRouterInfoJob.INFO_FILENAME);
    boolean infoExists = rif.exists();
    File rkf = new File(getContext().getRouterDir(), CreateRouterInfoJob.KEYS_FILENAME);
    boolean keysExist = rkf.exists();
    File rkf2 = new File(getContext().getRouterDir(), CreateRouterInfoJob.KEYS2_FILENAME);
    boolean keys2Exist = rkf2.exists();
    InputStream fis1 = null;
    try {
        // so pretend the RI isn't there if there is no keyfile
        if (infoExists && (keys2Exist || keysExist)) {
            fis1 = new BufferedInputStream(new FileInputStream(rif));
            info = new RouterInfo();
            info.readBytes(fis1);
            // Catch this here before it all gets worse
            if (!info.isValid())
                throw new DataFormatException("Our RouterInfo has a bad signature");
            if (_log.shouldLog(Log.DEBUG))
                _log.debug("Reading in routerInfo from " + rif.getAbsolutePath() + " and it has " + info.getAddresses().size() + " addresses");
            // don't reuse if family name changed
            if (DataHelper.eq(info.getOption(FamilyKeyCrypto.OPT_NAME), getContext().getProperty(FamilyKeyCrypto.PROP_FAMILY_NAME))) {
                _us = info;
            } else {
                _log.logAlways(Log.WARN, "NetDb family name changed");
            }
        }
        if (keys2Exist || keysExist) {
            KeyData kd = readKeyData(rkf, rkf2);
            PublicKey pubkey = kd.routerIdentity.getPublicKey();
            SigningPublicKey signingPubKey = kd.routerIdentity.getSigningPublicKey();
            PrivateKey privkey = kd.privateKey;
            SigningPrivateKey signingPrivKey = kd.signingPrivateKey;
            SigType stype = signingPubKey.getType();
            // check if the sigtype config changed
            SigType cstype = CreateRouterInfoJob.getSigTypeConfig(getContext());
            boolean sigTypeChanged = stype != cstype;
            if (sigTypeChanged && getContext().getProperty(CreateRouterInfoJob.PROP_ROUTER_SIGTYPE) == null) {
                // TODO reduce to ~3 (i.e. increase probability) in future release
                if (getContext().random().nextInt(4) > 0) {
                    sigTypeChanged = false;
                    if (_log.shouldWarn())
                        _log.warn("Deferring RI rekey from " + stype + " to " + cstype);
                }
            }
            if (sigTypeChanged || shouldRebuild(privkey)) {
                if (_us != null) {
                    Hash h = _us.getIdentity().getHash();
                    _log.logAlways(Log.WARN, "Deleting old router identity " + h.toBase64());
                    // the netdb hasn't started yet, but we want to delete the RI
                    File f = PersistentDataStore.getRouterInfoFile(getContext(), h);
                    f.delete();
                    // the banlist can be called at any time
                    getContext().banlist().banlistRouterForever(h, "Our previous identity");
                    _us = null;
                }
                if (sigTypeChanged)
                    _log.logAlways(Log.WARN, "Rebuilding RouterInfo with new signature type " + cstype);
                // windows... close before deleting
                if (fis1 != null) {
                    try {
                        fis1.close();
                    } catch (IOException ioe) {
                    }
                    fis1 = null;
                }
                rif.delete();
                rkf.delete();
                rkf2.delete();
                return;
            }
            getContext().keyManager().setKeys(pubkey, privkey, signingPubKey, signingPrivKey);
        }
    } catch (IOException ioe) {
        _log.log(Log.CRIT, "Error reading the router info from " + rif.getAbsolutePath() + " and the keys from " + rkf.getAbsolutePath(), ioe);
        _us = null;
        // windows... close before deleting
        if (fis1 != null) {
            try {
                fis1.close();
            } catch (IOException ioe2) {
            }
            fis1 = null;
        }
        rif.delete();
        rkf.delete();
        rkf2.delete();
    } catch (DataFormatException dfe) {
        _log.log(Log.CRIT, "Corrupt router info or keys at " + rif.getAbsolutePath() + " / " + rkf.getAbsolutePath(), dfe);
        _us = null;
        // windows... close before deleting
        if (fis1 != null) {
            try {
                fis1.close();
            } catch (IOException ioe) {
            }
            fis1 = null;
        }
        rif.delete();
        rkf.delete();
        rkf2.delete();
    } finally {
        if (fis1 != null)
            try {
                fis1.close();
            } catch (IOException ioe) {
            }
    }
}

Example 12 with PrivateKey

use of net.i2p.data.PrivateKey in project i2p.i2p by i2p.

the class SessionEncryptionTest method testNoSessions1.

public void testNoSessions1() throws Exception {
    Object[] keys = KeyGenerator.getInstance().generatePKIKeypair();
    PublicKey pubKey = (PublicKey) keys[0];
    PrivateKey privKey = (PrivateKey) keys[1];
    SessionKeyManager skm = new TransientSessionKeyManager(_context);
    SessionKey curKey = skm.createSession(pubKey);
    byte[] msg = DataHelper.getASCII("msg 1");
    byte[] emsg = _context.elGamalAESEngine().encrypt(msg, pubKey, curKey, null, null, 64);
    byte[] dmsg = _context.elGamalAESEngine().decrypt(emsg, privKey, skm);
    assertTrue(DataHelper.eq(dmsg, msg));
}

Example 13 with PrivateKey

use of net.i2p.data.PrivateKey in project i2p.i2p by i2p.

the class SessionEncryptionTest method testSessions.

/**
 *  Run     tagsIncluded    useTag  rekey
 *  1       yes (2)         no      no
 *  2       no              yes     no
 *  3       yes (2)         yes     no
 *  4       no              yes     no
 *  5       no              yes     no
 */
public void testSessions() throws Exception {
    Object[] keys = KeyGenerator.getInstance().generatePKIKeypair();
    PublicKey pubKey = (PublicKey) keys[0];
    PrivateKey privKey = (PrivateKey) keys[1];
    SessionKeyManager skm = new TransientSessionKeyManager(_context);
    SessionKey curKey = skm.createSession(pubKey);
    SessionTag tag1 = new SessionTag(true);
    SessionTag tag2 = new SessionTag(true);
    SessionTag tag3 = new SessionTag(true);
    SessionTag tag4 = new SessionTag(true);
    HashSet<SessionTag> firstTags = new HashSet<SessionTag>();
    firstTags.add(tag1);
    firstTags.add(tag2);
    HashSet<SessionTag> secondTags = new HashSet<SessionTag>();
    secondTags.add(tag3);
    secondTags.add(tag4);
    byte[] msg1 = DataHelper.getASCII("msg 1");
    byte[] msg2 = DataHelper.getASCII("msg 2");
    byte[] msg3 = DataHelper.getASCII("msg 3");
    byte[] msg4 = DataHelper.getASCII("msg 4");
    byte[] msg5 = DataHelper.getASCII("msg 5");
    byte[] emsg1 = _context.elGamalAESEngine().encrypt(msg1, pubKey, curKey, firstTags, null, 64);
    byte[] dmsg1 = _context.elGamalAESEngine().decrypt(emsg1, privKey, skm);
    assertTrue(DataHelper.eq(dmsg1, msg1));
    TagSetHandle tsh = skm.tagsDelivered(pubKey, curKey, firstTags);
    skm.tagsAcked(pubKey, curKey, tsh);
    curKey = skm.getCurrentKey(pubKey);
    SessionTag curTag = skm.consumeNextAvailableTag(pubKey, curKey);
    assertNotNull(curTag);
    byte[] emsg2 = _context.elGamalAESEngine().encrypt(msg2, pubKey, curKey, null, curTag, 64);
    byte[] dmsg2 = _context.elGamalAESEngine().decrypt(emsg2, privKey, skm);
    assertTrue(DataHelper.eq(dmsg2, msg2));
    curKey = skm.getCurrentKey(pubKey);
    curTag = skm.consumeNextAvailableTag(pubKey, curKey);
    assertNotNull(curTag);
    assertNotNull(curKey);
    byte[] emsg3 = _context.elGamalAESEngine().encrypt(msg3, pubKey, curKey, secondTags, curTag, 64);
    byte[] dmsg3 = _context.elGamalAESEngine().decrypt(emsg3, privKey, skm);
    assertTrue(DataHelper.eq(dmsg3, msg3));
    tsh = skm.tagsDelivered(pubKey, curKey, secondTags);
    skm.tagsAcked(pubKey, curKey, tsh);
    curKey = skm.getCurrentKey(pubKey);
    curTag = skm.consumeNextAvailableTag(pubKey, curKey);
    assertNotNull(curTag);
    assertNotNull(curKey);
    byte[] emsg4 = _context.elGamalAESEngine().encrypt(msg4, pubKey, curKey, null, curTag, 64);
    byte[] dmsg4 = _context.elGamalAESEngine().decrypt(emsg4, privKey, skm);
    assertTrue(DataHelper.eq(dmsg4, msg4));
    curKey = skm.getCurrentKey(pubKey);
    curTag = skm.consumeNextAvailableTag(pubKey, curKey);
    assertNotNull(curTag);
    assertNotNull(curKey);
    byte[] emsg5 = _context.elGamalAESEngine().encrypt(msg5, pubKey, curKey, null, curTag, 64);
    byte[] dmsg5 = _context.elGamalAESEngine().decrypt(emsg5, privKey, skm);
    assertTrue(DataHelper.eq(dmsg5, msg5));
}

Example 14 with PrivateKey

use of net.i2p.data.PrivateKey in project i2p.i2p-bote by i2p.

the class RelayRequest method decrypt.

/**
 * Decrypts the <code>CommunicationPacket</code> inside this packet.
 * @throws DataFormatException
 * @throws MalformedPacketException
 */
private CommunicationPacket decrypt(I2PSession i2pSession) throws DataFormatException, MalformedPacketException {
    PrivateKey privateKey = i2pSession.getDecryptionKey();
    byte[] decryptedData = Util.decrypt(payload, privateKey);
    return CommunicationPacket.createPacket(decryptedData);
}

Example 15 with PrivateKey

use of net.i2p.data.PrivateKey in project i2p.i2p by i2p.

the class KeyPairGenerator method generateKeyPair.

public KeyPair generateKeyPair() {
    if (!initialized)
        initialize(DEFAULT_STRENGTH, RandomSource.getInstance());
    KeyGenerator kg = KeyGenerator.getInstance();
    SimpleDataStructure[] keys = kg.generatePKIKeys();
    PublicKey pubKey = (PublicKey) keys[0];
    PrivateKey privKey = (PrivateKey) keys[1];
    ElGamalPublicKey epubKey = new ElGamalPublicKeyImpl(new NativeBigInteger(1, pubKey.getData()), elgParams);
    ElGamalPrivateKey eprivKey = new ElGamalPrivateKeyImpl(new NativeBigInteger(1, privKey.getData()), elgParams);
    return new KeyPair(epubKey, eprivKey);
}