Examples with PayloadGarlicConfig net.i2p.router.message.PayloadGarlicConfig used on opensource projects

Example 1 with PayloadGarlicConfig

use of net.i2p.router.message.PayloadGarlicConfig in project i2p.i2p by i2p.

the class TestJob method sendTest.

private void sendTest(I2NPMessage m) {
    // garlic route that DeliveryStatusMessage to ourselves so the endpoints and gateways
    // can't tell its a test.  to simplify this, we encrypt it with a random key and tag,
    // remembering that key+tag so that we can decrypt it later.  this means we can do the
    // garlic encryption without any ElGamal (yay)
    PayloadGarlicConfig payload = new PayloadGarlicConfig();
    payload.setCertificate(Certificate.NULL_CERT);
    payload.setId(getContext().random().nextLong(I2NPMessage.MAX_ID_VALUE));
    payload.setPayload(m);
    payload.setRecipient(getContext().router().getRouterInfo());
    payload.setDeliveryInstructions(DeliveryInstructions.LOCAL);
    payload.setExpiration(m.getMessageExpiration());
    SessionKey encryptKey = getContext().keyGenerator().generateSessionKey();
    SessionTag encryptTag = new SessionTag(true);
    _encryptTag = encryptTag;
    SessionKey sentKey = new SessionKey();
    Set<SessionTag> sentTags = null;
    GarlicMessage msg = GarlicMessageBuilder.buildMessage(getContext(), payload, sentKey, sentTags, getContext().keyManager().getPublicKey(), encryptKey, encryptTag);
    if (msg == null) {
        // overloaded / unknown peers / etc
        scheduleRetest();
        return;
    }
    Set<SessionTag> encryptTags = new RemovableSingletonSet<SessionTag>(encryptTag);
    // Register the single tag with the appropriate SKM
    if (_cfg.isInbound() && !_pool.getSettings().isExploratory()) {
        SessionKeyManager skm = getContext().clientManager().getClientSessionKeyManager(_pool.getSettings().getDestination());
        if (skm != null)
            skm.tagsReceived(encryptKey, encryptTags);
    } else {
        getContext().sessionKeyManager().tagsReceived(encryptKey, encryptTags);
    }
    if (_log.shouldLog(Log.DEBUG))
        _log.debug("Sending garlic test of " + _outTunnel + " / " + _replyTunnel);
    getContext().tunnelDispatcher().dispatchOutbound(msg, _outTunnel.getSendTunnelId(0), _replyTunnel.getReceiveTunnelId(0), _replyTunnel.getPeer(0));
}

Example 2 with PayloadGarlicConfig

use of net.i2p.router.message.PayloadGarlicConfig in project i2p.i2p by i2p.

the class MessageWrapper method wrap.

/**
 *  Garlic wrap a message from nobody, destined for a router,
 *  to hide the contents from the OBEP.
 *  Forces ElGamal.
 *
 *  @return null on encrypt failure
 *  @since 0.9.5
 */
static GarlicMessage wrap(RouterContext ctx, I2NPMessage m, RouterInfo to) {
    PayloadGarlicConfig payload = new PayloadGarlicConfig();
    payload.setCertificate(Certificate.NULL_CERT);
    payload.setId(ctx.random().nextLong(I2NPMessage.MAX_ID_VALUE));
    payload.setPayload(m);
    payload.setRecipient(to);
    payload.setDeliveryInstructions(DeliveryInstructions.LOCAL);
    payload.setExpiration(m.getMessageExpiration());
    SessionKey sentKey = ctx.keyGenerator().generateSessionKey();
    PublicKey key = to.getIdentity().getPublicKey();
    GarlicMessage msg = GarlicMessageBuilder.buildMessage(ctx, payload, null, null, key, sentKey, null);
    return msg;
}

Example 3 with PayloadGarlicConfig

use of net.i2p.router.message.PayloadGarlicConfig in project i2p.i2p by i2p.

the class MessageWrapper method wrap.

/**
 *  Garlic wrap a message from nobody, destined for an unknown router,
 *  to hide the contents from the IBGW.
 *  Uses a supplied session key and session tag for AES encryption,
 *  avoiding ElGamal.
 *
 *  @param encryptKey non-null
 *  @param encryptTag non-null
 *  @return null on encrypt failure
 *  @since 0.9.7
 */
public static GarlicMessage wrap(RouterContext ctx, I2NPMessage m, SessionKey encryptKey, SessionTag encryptTag) {
    PayloadGarlicConfig payload = new PayloadGarlicConfig();
    payload.setCertificate(Certificate.NULL_CERT);
    payload.setId(ctx.random().nextLong(I2NPMessage.MAX_ID_VALUE));
    payload.setPayload(m);
    payload.setDeliveryInstructions(DeliveryInstructions.LOCAL);
    payload.setExpiration(m.getMessageExpiration());
    GarlicMessage msg = GarlicMessageBuilder.buildMessage(ctx, payload, null, null, null, encryptKey, encryptTag);
    return msg;
}

Example 4 with PayloadGarlicConfig

use of net.i2p.router.message.PayloadGarlicConfig in project i2p.i2p by i2p.

the class MessageWrapper method wrap.

/**
 *  Garlic wrap a message from a client or this router, destined for a router,
 *  to hide the contents from the OBEP.
 *  Caller must call acked() or fail() on the returned object.
 *
 *  @param from must be a local client with a session key manager,
 *              or null to use the router's session key manager
 *  @return null on encrypt failure
 */
static WrappedMessage wrap(RouterContext ctx, I2NPMessage m, Hash from, RouterInfo to) {
    PayloadGarlicConfig payload = new PayloadGarlicConfig();
    payload.setCertificate(Certificate.NULL_CERT);
    payload.setId(ctx.random().nextLong(I2NPMessage.MAX_ID_VALUE));
    payload.setPayload(m);
    payload.setRecipient(to);
    payload.setDeliveryInstructions(DeliveryInstructions.LOCAL);
    payload.setExpiration(m.getMessageExpiration());
    SessionKeyManager skm;
    if (from != null)
        skm = ctx.clientManager().getClientSessionKeyManager(from);
    else
        skm = ctx.sessionKeyManager();
    if (skm == null)
        return null;
    SessionKey sentKey = new SessionKey();
    Set<SessionTag> sentTags = new HashSet<SessionTag>();
    GarlicMessage msg = GarlicMessageBuilder.buildMessage(ctx, payload, sentKey, sentTags, NETDB_TAGS_TO_DELIVER, NETDB_LOW_THRESHOLD, skm);
    if (msg == null)
        return null;
    TagSetHandle tsh = null;
    PublicKey sentTo = to.getIdentity().getPublicKey();
    if (!sentTags.isEmpty())
        tsh = skm.tagsDelivered(sentTo, sentKey, sentTags);
    // _log.debug("Sent to: " + to.getIdentity().getHash() + " with key: " + sentKey + " and tags: " + sentTags.size());
    return new WrappedMessage(msg, skm, sentTo, sentKey, tsh);
}