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Melledy
2022-04-17 05:43:07 -07:00
commit 7925d1cda3
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src/main/java/emu/grasscutter/utils/Crypto.java Normal file
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package emu.grasscutter.utils;
import java.security.SecureRandom;
import java.util.Base64;
import emu.grasscutter.Grasscutter;
import emu.grasscutter.net.proto.GetPlayerTokenRspOuterClass.GetPlayerTokenRsp;
import emu.grasscutter.net.proto.QueryCurrRegionHttpRspOuterClass.QueryCurrRegionHttpRsp;
public class Crypto {
private static SecureRandom secureRandom = new SecureRandom();
public static final long ENCRYPT_SEED = Long.parseUnsignedLong("11468049314633205968");
public static byte[] ENCRYPT_SEED_BUFFER = new byte[0];
public static byte[] DISPATCH_KEY;
public static byte[] ENCRYPT_KEY;
public static void loadKeys() {
DISPATCH_KEY = FileUtils.read(Grasscutter.getConfig().KEY_FOLDER + "dispatchKey.bin");
ENCRYPT_KEY = FileUtils.read(Grasscutter.getConfig().KEY_FOLDER + "secretKey.bin");
ENCRYPT_SEED_BUFFER = FileUtils.read(Grasscutter.getConfig().KEY_FOLDER + "secretKeyBuffer.bin");
}
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 void extractSecretKeyBuffer(byte[] data) {
try {
GetPlayerTokenRsp p = GetPlayerTokenRsp.parseFrom(data);
FileUtils.write(Grasscutter.getConfig().KEY_FOLDER + "secretKeyBuffer.bin", p.getSecretKeyBuffer().toByteArray());
Grasscutter.getLogger().info("Secret Key: " + p.getSecretKey());
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
public static void extractDispatchSeed(String data) {
try {
QueryCurrRegionHttpRsp p = QueryCurrRegionHttpRsp.parseFrom(Base64.getDecoder().decode(data));
FileUtils.write(Grasscutter.getConfig().KEY_FOLDER + "dispatchSeed.bin", p.getRegionInfo().getSecretKey().toByteArray());
} catch (Exception e) {
e.printStackTrace();
}
}
public static byte[] createSessionKey(int length) {
byte[] bytes = new byte[length];
secureRandom.nextBytes(bytes);
return bytes;
}
}