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

Example 31 with SigningPrivateKey

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

the class RequestLeaseSetMessageHandler method signLeaseSet.

/**
 *  Finish creating and signing the new LeaseSet
 *  @since 0.9.7
 */
protected synchronized void signLeaseSet(LeaseSet leaseSet, I2PSessionImpl session) {
    Destination dest = session.getMyDestination();
    // also, if this session is connected to multiple routers, include other leases here
    leaseSet.setDestination(dest);
    // reuse the old keys for the client
    LeaseInfo li = _existingLeaseSets.get(dest);
    if (li == null) {
        // [enctype:]b64 of private key
        String spk = session.getOptions().getProperty("i2cp.leaseSetPrivateKey");
        // [sigtype:]b64 of private key
        String sspk = session.getOptions().getProperty("i2cp.leaseSetSigningPrivateKey");
        PrivateKey privKey = null;
        SigningPrivateKey signingPrivKey = null;
        if (spk != null && sspk != null) {
            boolean useOldKeys = true;
            int colon = sspk.indexOf(':');
            SigType type = dest.getSigType();
            if (colon > 0) {
                String stype = sspk.substring(0, colon);
                SigType t = SigType.parseSigType(stype);
                if (t == type)
                    sspk = sspk.substring(colon + 1);
                else
                    useOldKeys = false;
            }
            colon = spk.indexOf(':');
            // just ignore for now, no other types supported
            if (colon >= 0)
                spk = spk.substring(colon + 1);
            if (useOldKeys) {
                try {
                    signingPrivKey = new SigningPrivateKey(type);
                    signingPrivKey.fromBase64(sspk);
                } catch (DataFormatException iae) {
                    useOldKeys = false;
                    signingPrivKey = null;
                }
            }
            if (useOldKeys) {
                try {
                    privKey = new PrivateKey();
                    privKey.fromBase64(spk);
                } catch (DataFormatException iae) {
                    privKey = null;
                }
            }
        }
        if (privKey == null && !_existingLeaseSets.isEmpty()) {
            // look for keypair from another dest using same pubkey
            PublicKey pk = dest.getPublicKey();
            for (Map.Entry<Destination, LeaseInfo> e : _existingLeaseSets.entrySet()) {
                if (pk.equals(e.getKey().getPublicKey())) {
                    privKey = e.getValue().getPrivateKey();
                    if (_log.shouldLog(Log.DEBUG))
                        _log.debug("Creating new leaseInfo keys for " + dest + " with private key from " + e.getKey());
                    break;
                }
            }
        }
        if (privKey != null) {
            if (signingPrivKey != null) {
                li = new LeaseInfo(privKey, signingPrivKey);
                if (_log.shouldLog(Log.DEBUG))
                    _log.debug("Creating new leaseInfo keys for " + dest + " WITH configured private keys");
            } else {
                li = new LeaseInfo(privKey, dest);
            }
        } else {
            li = new LeaseInfo(dest);
            if (_log.shouldLog(Log.DEBUG))
                _log.debug("Creating new leaseInfo keys for " + dest + " without configured private keys");
        }
        _existingLeaseSets.put(dest, li);
    } else {
        if (_log.shouldLog(Log.DEBUG))
            _log.debug("Caching the old leaseInfo keys for " + dest);
    }
    leaseSet.setEncryptionKey(li.getPublicKey());
    leaseSet.setSigningKey(li.getSigningPublicKey());
    // SubSession options aren't updated via the gui, so use the primary options
    Properties opts;
    if (session instanceof SubSession)
        opts = ((SubSession) session).getPrimaryOptions();
    else
        opts = session.getOptions();
    boolean encrypt = Boolean.parseBoolean(opts.getProperty("i2cp.encryptLeaseSet"));
    String sk = opts.getProperty("i2cp.leaseSetKey");
    Hash h = dest.calculateHash();
    if (encrypt && sk != null) {
        SessionKey key = new SessionKey();
        try {
            key.fromBase64(sk);
            leaseSet.encrypt(key);
            _context.keyRing().put(h, key);
        } catch (DataFormatException dfe) {
            _log.error("Bad leaseset key: " + sk);
            _context.keyRing().remove(h);
        }
    } else {
        _context.keyRing().remove(h);
    }
    try {
        leaseSet.sign(session.getPrivateKey());
        // Workaround for unparsable serialized signing private key for revocation
        // Send him a dummy DSA_SHA1 private key since it's unused anyway
        // See CreateLeaseSetMessage.doReadMessage()
        SigningPrivateKey spk = li.getSigningPrivateKey();
        if (!_context.isRouterContext() && spk.getType() != SigType.DSA_SHA1) {
            byte[] dummy = new byte[SigningPrivateKey.KEYSIZE_BYTES];
            _context.random().nextBytes(dummy);
            spk = new SigningPrivateKey(dummy);
        }
        session.getProducer().createLeaseSet(session, leaseSet, spk, li.getPrivateKey());
        session.setLeaseSet(leaseSet);
    } catch (DataFormatException dfe) {
        session.propogateError("Error signing the leaseSet", dfe);
    } catch (I2PSessionException ise) {
        if (session.isClosed()) {
            // race, closed while signing leaseset
            // EOFExceptions are logged at WARN level (see I2PSessionImpl.propogateError())
            // so the user won't see this
            EOFException eof = new EOFException("Session closed while signing leaseset");
            eof.initCause(ise);
            session.propogateError("Session closed while signing leaseset", eof);
        } else {
            session.propogateError("Error sending the signed leaseSet", ise);
        }
    }
}