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Tunnels: Build message tweak

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zzz
2025-05-20 08:00:28 -04:00
parent a83feae229
commit 78e949c11c
1 changed files with 8 additions and 1 deletions
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9
router/java/src/net/i2p/router/tunnel/pool/BuildMessageGenerator.java
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@ -6,6 +6,8 @@ import java.util.Properties;
import net.i2p.I2PAppContext;
import net.i2p.crypto.ChaCha20;
import net.i2p.crypto.EncType;
import net.i2p.crypto.KeyFactory;
import net.i2p.crypto.KeyPair;
import net.i2p.data.Hash;
import net.i2p.data.PublicKey;
import net.i2p.data.SessionKey;
@ -72,7 +74,12 @@ abstract class BuildMessageGenerator {
byte encrypted[] = new byte[len];
if (cfg.isInbound() && hop + 1 == cfg.getLength()) { // IBEP
System.arraycopy(cfg.getPeer(hop).getData(), 0, encrypted, 0, BuildRequestRecord.PEER_SIZE);
ctx.random().nextBytes(encrypted, BuildRequestRecord.PEER_SIZE, len - BuildRequestRecord.PEER_SIZE);
KeyFactory kf = ctx.commSystem().getXDHFactory();
KeyPair kp = kf.getKeys();
PublicKey pub = kp.getPublic();
int plen = pub.length();
System.arraycopy(pub.getData(), 0, encrypted, BuildRequestRecord.PEER_SIZE, plen);
ctx.random().nextBytes(encrypted, BuildRequestRecord.PEER_SIZE + plen, len - (BuildRequestRecord.PEER_SIZE + plen));
byte[] h = new byte[Hash.HASH_LENGTH];
ctx.sha().calculateHash(encrypted, 0, len, h, 0);
cfg.setBlankHash(new Hash(h));