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Merge branch 'development' into unstable-quests

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# Conflicts:
#	src/generated/main/java/emu/grasscutter/net/proto/ResinChangeNotifyOuterClass.java
#	src/main/java/emu/grasscutter/game/managers/ResinManager.java
#	src/main/java/emu/grasscutter/game/player/Player.java
#	src/main/java/emu/grasscutter/game/props/ItemUseAction/ItemUseAddItem.java
#	src/main/java/emu/grasscutter/server/http/dispatch/RegionHandler.java
#	src/main/java/emu/grasscutter/server/packet/send/PacketResinChangeNotify.java
#	src/main/java/emu/grasscutter/utils/Crypto.java
This commit is contained in:
KingRainbow44
2023-04-10 22:13:50 -04:00
parent e20c7c151b 3c60f792ca
commit 5e56b5e3a8
15 changed files with 3822 additions and 1600 deletions
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193
src/main/java/emu/grasscutter/utils/Crypto.java
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@@ -1,77 +1,116 @@
package emu.grasscutter.utils;
import emu.grasscutter.Grasscutter;
import java.nio.file.Path;
import java.security.KeyFactory;
import java.security.PrivateKey;
import java.security.PublicKey;
import java.security.SecureRandom;
import java.security.spec.PKCS8EncodedKeySpec;
import java.security.spec.X509EncodedKeySpec;
import java.util.HashMap;
import java.util.Map;
import java.util.regex.Pattern;
public final class Crypto {
private static final SecureRandom secureRandom = new SecureRandom();
public static byte[] DISPATCH_KEY;
public static byte[] DISPATCH_SEED;
public static byte[] ENCRYPT_KEY;
public static long ENCRYPT_SEED = Long.parseUnsignedLong("11468049314633205968");
public static byte[] ENCRYPT_SEED_BUFFER = new byte[0];
public static PrivateKey CUR_SIGNING_KEY;
public static Map<Integer, PublicKey> EncryptionKeys = new HashMap<>();
public static void loadKeys() {
DISPATCH_KEY = FileUtils.readResource("/keys/dispatchKey.bin");
DISPATCH_SEED = FileUtils.readResource("/keys/dispatchSeed.bin");
ENCRYPT_KEY = FileUtils.readResource("/keys/secretKey.bin");
ENCRYPT_SEED_BUFFER = FileUtils.readResource("/keys/secretKeyBuffer.bin");
try {
CUR_SIGNING_KEY =
KeyFactory.getInstance("RSA")
.generatePrivate(
new PKCS8EncodedKeySpec(FileUtils.readResource("/keys/SigningKey.der")));
Pattern pattern = Pattern.compile("([0-9]*)_Pub\\.der");
for (Path path : FileUtils.getPathsFromResource("/keys/game_keys")) {
if (path.toString().endsWith("_Pub.der")) {
var m = pattern.matcher(path.getFileName().toString());
if (m.matches()) {
var key =
KeyFactory.getInstance("RSA")
.generatePublic(new X509EncodedKeySpec(FileUtils.read(path)));
EncryptionKeys.put(Integer.valueOf(m.group(1)), key);
}
}
}
} catch (Exception e) {
Grasscutter.getLogger().error("An error occurred while loading keys.", e);
}
}
public static void xor(byte[] packet, byte[] key) {
try {
for (int i = 0; i < packet.length; i++) {
packet[i] ^= key[i % key.length];
}
} catch (Exception e) {
Grasscutter.getLogger().error("Crypto error.", e);
}
}
public static byte[] createSessionKey(int length) {
byte[] bytes = new byte[length];
secureRandom.nextBytes(bytes);
return bytes;
}
}
package emu.grasscutter.utils;
import emu.grasscutter.server.http.objects.QueryCurRegionRspJson;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.nio.file.Path;
import java.security.KeyFactory;
import java.security.PrivateKey;
import java.security.PublicKey;
import java.security.SecureRandom;
import java.security.Signature;
import java.security.spec.PKCS8EncodedKeySpec;
import java.security.spec.X509EncodedKeySpec;
import java.util.Arrays;
import java.util.Map;
import java.util.HashMap;
import java.util.regex.Pattern;
import emu.grasscutter.Grasscutter;
import javax.crypto.Cipher;
public final class Crypto {
private static final SecureRandom secureRandom = new SecureRandom();
public static byte[] DISPATCH_KEY;
public static byte[] DISPATCH_SEED;
public static byte[] ENCRYPT_KEY;
public static long ENCRYPT_SEED = Long.parseUnsignedLong("11468049314633205968");
public static byte[] ENCRYPT_SEED_BUFFER = new byte[0];
public static PrivateKey CUR_SIGNING_KEY;
public static Map<Integer, PublicKey> EncryptionKeys = new HashMap<>();
public static void loadKeys() {
DISPATCH_KEY = FileUtils.readResource("/keys/dispatchKey.bin");
DISPATCH_SEED = FileUtils.readResource("/keys/dispatchSeed.bin");
ENCRYPT_KEY = FileUtils.readResource("/keys/secretKey.bin");
ENCRYPT_SEED_BUFFER = FileUtils.readResource("/keys/secretKeyBuffer.bin");
try {
CUR_SIGNING_KEY = KeyFactory.getInstance("RSA")
.generatePrivate(new PKCS8EncodedKeySpec(FileUtils.readResource("/keys/SigningKey.der")));
Pattern pattern = Pattern.compile("([0-9]*)_Pub\\.der");
for (Path path : FileUtils.getPathsFromResource("/keys/game_keys")) {
if (path.toString().endsWith("_Pub.der")) {
var m = pattern.matcher(path.getFileName().toString());
if (m.matches()) {
var key = KeyFactory.getInstance("RSA")
.generatePublic(new X509EncodedKeySpec(FileUtils.read(path)));
EncryptionKeys.put(Integer.valueOf(m.group(1)), key);
}
}
}
} catch (Exception e) {
Grasscutter.getLogger().error("An error occurred while loading keys.", e);
}
}
public static void xor(byte[] packet, byte[] key) {
try {
for (int i = 0; i < packet.length; i++) {
packet[i] ^= key[i % key.length];
}
} catch (Exception e) {
Grasscutter.getLogger().error("Crypto error.", e);
}
}
public static byte[] createSessionKey(int length) {
byte[] bytes = new byte[length];
secureRandom.nextBytes(bytes);
return bytes;
}
public static QueryCurRegionRspJson encryptAndSignRegionData(byte[] regionInfo, String key_id) throws Exception {
if (key_id == null) {
throw new Exception("Key ID was not set");
}
Cipher cipher = Cipher.getInstance("RSA/ECB/PKCS1Padding");
cipher.init(Cipher.ENCRYPT_MODE, EncryptionKeys.get(Integer.valueOf(key_id)));
//Encrypt regionInfo in chunks
ByteArrayOutputStream encryptedRegionInfoStream = new ByteArrayOutputStream();
//Thank you so much GH Copilot
int chunkSize = 256 - 11;
int regionInfoLength = regionInfo.length;
int numChunks = (int) Math.ceil(regionInfoLength / (double) chunkSize);
for (int i = 0; i < numChunks; i++) {
byte[] chunk = Arrays.copyOfRange(regionInfo, i * chunkSize,
Math.min((i + 1) * chunkSize, regionInfoLength));
byte[] encryptedChunk = cipher.doFinal(chunk);
encryptedRegionInfoStream.write(encryptedChunk);
}
Signature privateSignature = Signature.getInstance("SHA256withRSA");
privateSignature.initSign(CUR_SIGNING_KEY);
privateSignature.update(regionInfo);
var rsp = new QueryCurRegionRspJson();
rsp.content = Utils.base64Encode(encryptedRegionInfoStream.toByteArray());
rsp.sign = Utils.base64Encode(privateSignature.sign());
return rsp;
}
}