make work on browser (almost)

src/lwjgl/java/me/ayunami2000/ayuncraft/CryptManager.java

@@ -1,4 +1,4 @@
-package net.minecraft.src;
+package me.ayunami2000.ayuncraft;
 
 import java.io.InputStream;
 import java.io.OutputStream;
@@ -17,6 +17,7 @@ import java.security.SecureRandom;
 import java.security.Security;
 import java.security.spec.InvalidKeySpecException;
 import java.security.spec.X509EncodedKeySpec;
+import java.util.Arrays;
 import javax.crypto.BadPaddingException;
 import javax.crypto.Cipher;
 import javax.crypto.IllegalBlockSizeException;

src/main/java/net/lax1dude/eaglercraft/WebsocketNetworkManager.java

@@ -2,11 +2,12 @@ package net.lax1dude.eaglercraft;
 
 import java.io.*;
 import java.nio.ByteBuffer;
-import java.security.PrivateKey;
+import java.util.Arrays;
 import java.util.LinkedList;
 
 import net.minecraft.client.Minecraft;
 import net.minecraft.src.*;
+import me.ayunami2000.ayuncraft.CryptManager;
 import org.bouncycastle.crypto.BufferedBlockCipher;
 
 import javax.crypto.SecretKey;
@@ -15,7 +16,8 @@ public class WebsocketNetworkManager implements INetworkManager {
 	private boolean isInputBeingDecrypted;
 	private boolean isOutputEncrypted;
 	private SecretKey sharedKeyForEncryption;
-	private PrivateKey privateKey;
+
+	private final boolean logpackets=true;
 
 	private BufferedBlockCipher inputBufferedBlockCipher=null;
 	private BufferedBlockCipher outputBufferedBlockCipher=null;
@@ -23,14 +25,7 @@ public class WebsocketNetworkManager implements INetworkManager {
 	private NetHandler netHandler;
 
 	public WebsocketNetworkManager(String uri, String eagler, NetHandler netHandler) throws IOException {
-		this(uri,eagler,netHandler,(PrivateKey)null);
-		//this(uri,eagler,netHandler,CryptManager.createNewKeyPair().getPrivate());
-	}
-
-	public WebsocketNetworkManager(String uri, String eagler, NetHandler netHandler, PrivateKey privKey) throws IOException {
 		this.netHandler = netHandler;
-		this.privateKey = privKey;
-		//this.sharedKeyForEncryption = CryptManager.createNewSharedKey();
 		this.sharedKeyForEncryption = null;
 		this.isInputBeingDecrypted = false;
 		this.isOutputEncrypted = false;
@@ -49,7 +44,7 @@ public class WebsocketNetworkManager implements INetworkManager {
 	public void addToSendQueue(Packet var1) {
 		try {
 			sendBuffer.reset();
-			//the following attempts to keep packets encrypted because i forgot that last code i sent lol
+
 			DataOutputStream yee;
 			if(this.isOutputEncrypted&&!(var1 instanceof Packet252SharedKey)){
 				yee = this.encryptOuputStream();
@@ -58,16 +53,12 @@ public class WebsocketNetworkManager implements INetworkManager {
 			}
 
 			if (Minecraft.getMinecraft().gameSettings.useDefaultProtocol && var1 instanceof Packet252SharedKey && !this.isOutputEncrypted)
-			{
-				if (!this.netHandler.isServerHandler())
 			{
 				this.sharedKeyForEncryption = ((Packet252SharedKey)var1).getSharedKey();
-				}
 				this.isOutputEncrypted=true;
 				//yee=this.encryptOuputStream(yee);
 			}
 			Packet.writePacket(var1, yee);
-			//System.out.println("SENDING: "+var1);
 			yee.flush();
 			EaglerAdapter.writePacket(sendBuffer.toByteArray());
 		} catch (IOException e) {
@@ -162,7 +153,7 @@ public class WebsocketNetworkManager implements INetworkManager {
 					decStream.mark();
 					try {
 						Packet pkt = Packet.readPacket(packetStream, false);
-						//System.out.println("RECEIVING: " + pkt);
+						if(logpackets)System.out.println("RECEIVING: " + pkt);
 						pkt.processPacket(this.netHandler);
 					} catch (EOFException e) {
 						decStream.reset();
@@ -182,19 +173,17 @@ public class WebsocketNetworkManager implements INetworkManager {
 			}else {
 				DataInputStream packetStream = new DataInputStream(new ByteBufferDirectInputStream(stream));
 				while (stream.hasRemaining()) {
+					if(logpackets)System.out.println("FARD");
 					stream.mark();
 					try {
 						Packet pkt = Packet.readPacket(packetStream, false);
 						boolean change=false;
 						if (pkt != null) {
 							if (Minecraft.getMinecraft().gameSettings.useDefaultProtocol && pkt instanceof Packet252SharedKey && !this.isInputBeingDecrypted) {
-								if (this.netHandler.isServerHandler()) {
-									this.sharedKeyForEncryption = ((Packet252SharedKey) pkt).getSharedKey(this.privateKey);
-								}
 								packetStream = this.decryptInputStream(new ByteBufferDirectInputStream(stream));
 								change=true;
 							}
-							//System.out.println("RECEIVING: " + pkt);
+							if(logpackets)System.out.println("RECEIVING: " + pkt);
 							pkt.processPacket(this.netHandler);
 							if(change){
 								processReadPackets();

src/main/java/net/minecraft/src/NetClientHandler.java

@@ -8,6 +8,7 @@ import java.security.PrivateKey;
 import java.security.PublicKey;
 import java.util.*;
 
+import me.ayunami2000.ayuncraft.CryptManager;
 import net.lax1dude.eaglercraft.DefaultSkinRenderer;
 import net.lax1dude.eaglercraft.EaglerAdapter;
 import net.lax1dude.eaglercraft.EaglerProfile;

src/main/java/net/minecraft/src/Packet252SharedKey.java

@@ -1,5 +1,7 @@
 package net.minecraft.src;
 
+import me.ayunami2000.ayuncraft.CryptManager;
+
 import java.io.DataInputStream;
 import java.io.DataOutputStream;
 import java.io.IOException;
@@ -73,7 +75,7 @@ public class Packet252SharedKey extends Packet
 	 */
 	public SecretKey getSharedKey()
 	{
-		return this.getSharedKey((PrivateKey)null);
+		return this.getSharedKey(null);
 	}
 
 	/**

src/main/java/net/minecraft/src/Packet253ServerAuthData.java

@@ -1,5 +1,7 @@
 package net.minecraft.src;
 
+import me.ayunami2000.ayuncraft.CryptManager;
+
 import java.io.DataInputStream;
 import java.io.DataOutputStream;
 import java.io.IOException;

src/main/java/org/bouncycastle/crypto/CipherKeyGenerator.java

@@ -1,10 +1,10 @@
 package org.bouncycastle.crypto;
 
-import java.security.SecureRandom;
+import java.util.Random;
 
 public class CipherKeyGenerator
 {
-    protected SecureRandom random;
+    protected Random random;
     protected int strength;
 
     public void init(KeyGenerationParameters par1)

src/main/java/org/bouncycastle/crypto/KeyGenerationParameters.java

@@ -1,13 +1,13 @@
 package org.bouncycastle.crypto;
 
-import java.security.SecureRandom;
+import java.util.Random;
 
 public class KeyGenerationParameters
 {
-    private SecureRandom random;
+    private Random random;
     private int strength;
 
-    public KeyGenerationParameters(SecureRandom par1SecureRandom, int par2)
+    public KeyGenerationParameters(Random par1SecureRandom, int par2)
     {
         this.random = par1SecureRandom;
         this.strength = par2;
@@ -16,7 +16,7 @@ public class KeyGenerationParameters
     /**
      * Return the random source associated with this generator.
      */
-    public SecureRandom getRandom()
+    public Random getRandom()
     {
         return this.random;
     }

src/teavm/java/java/security/Key.java

@@ -0,0 +1,34 @@
+/*
+ * Copyright (c) 1996, 2013, Oracle and/or its affiliates. All rights reserved.
+ * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ */
+
+package java.security;
+
+public interface Key {
+    public String getAlgorithm();
+
+    public String getFormat();
+
+    public byte[] getEncoded();
+}

src/teavm/java/java/security/PrivateKey.java

@@ -0,0 +1,29 @@
+/*
+ * Copyright (c) 1996, 2013, Oracle and/or its affiliates. All rights reserved.
+ * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ */
+
+package java.security;
+
+public interface PrivateKey extends Key, javax.security.auth.Destroyable {
+}

src/teavm/java/java/security/PublicKey.java

@@ -0,0 +1,29 @@
+/*
+ * Copyright (c) 1996, 2013, Oracle and/or its affiliates. All rights reserved.
+ * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ */
+
+package java.security;
+
+public interface PublicKey extends Key {
+}

src/teavm/java/java/security/spec/KeySpec.java

@@ -0,0 +1,28 @@
+/*
+ * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved.
+ * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ */
+
+package java.security.spec;
+
+public interface KeySpec { }

src/teavm/java/javax/crypto/SecretKey.java

@@ -0,0 +1,6 @@
+package javax.crypto;
+
+import java.security.Key;
+
+public interface SecretKey extends Key {
+}

src/teavm/java/javax/crypto/spec/SecretKeySpec.java

@@ -0,0 +1,80 @@
+package javax.crypto.spec;
+
+import java.security.spec.KeySpec;
+import javax.crypto.SecretKey;
+
+public class SecretKeySpec implements KeySpec, SecretKey {
+   private String algorithm;
+   private byte[] key;
+
+   public String getAlgorithm() {
+      return this.algorithm;
+   }
+
+   public String getFormat() {
+      return "RAW";
+   }
+
+   public byte[] getEncoded() {
+      byte[] tmp = new byte[this.key.length];
+      System.arraycopy(this.key, 0, tmp, 0, tmp.length);
+      return tmp;
+   }
+
+   public int hashCode() {
+      int code = this.algorithm.toUpperCase().hashCode();
+
+      for(int i = 0; i != this.key.length; ++i) {
+         code ^= this.key[i] << 8 * (i % 4);
+      }
+
+      return code;
+   }
+
+   public boolean equals(Object obj) {
+      if (obj != null && obj instanceof SecretKeySpec) {
+         SecretKeySpec spec = (SecretKeySpec)obj;
+         if (!this.algorithm.equalsIgnoreCase(spec.algorithm)) {
+            return false;
+         } else if (this.key.length != spec.key.length) {
+            return false;
+         } else {
+            for(int i = 0; i != this.key.length; ++i) {
+               if (this.key[i] != spec.key[i]) {
+                  return false;
+               }
+            }
+
+            return true;
+         }
+      } else {
+         return false;
+      }
+   }
+
+   public SecretKeySpec(byte[] key, String algorithm) {
+      if (key == null) {
+         throw new IllegalArgumentException("null key passed");
+      } else if (algorithm == null) {
+         throw new IllegalArgumentException("null algorithm passed");
+      } else {
+         this.key = new byte[key.length];
+         System.arraycopy(key, 0, this.key, 0, key.length);
+         this.algorithm = algorithm;
+      }
+   }
+
+   public SecretKeySpec(byte[] key, int offset, int len, String algorithm) {
+      if (key == null) {
+         throw new IllegalArgumentException("Null key passed");
+      } else if (key.length - offset < len) {
+         throw new IllegalArgumentException("Bad offset/len");
+      } else if (algorithm == null) {
+         throw new IllegalArgumentException("Null algorithm string passed");
+      } else {
+         this.key = new byte[len];
+         System.arraycopy(key, offset, this.key, 0, len);
+         this.algorithm = algorithm;
+      }
+   }
+}

src/teavm/java/javax/security/auth/DestroyFailedException.java

@@ -0,0 +1,39 @@
+/*
+ * Copyright (c) 1999, 2013, Oracle and/or its affiliates. All rights reserved.
+ * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ */
+
+package javax.security.auth;
+
+public class DestroyFailedException extends Exception {
+
+    private static final long serialVersionUID = -7790152857282749162L;
+
+    public DestroyFailedException() {
+        super();
+    }
+
+    public DestroyFailedException(String msg) {
+        super(msg);
+    }
+}

src/teavm/java/javax/security/auth/Destroyable.java

@@ -0,0 +1,36 @@
+/*
+ * Copyright (c) 1999, 2013, Oracle and/or its affiliates. All rights reserved.
+ * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ */
+
+package javax.security.auth;
+
+public interface Destroyable {
+    public default void destroy() throws DestroyFailedException {
+        throw new DestroyFailedException();
+    }
+
+    public default boolean isDestroyed() {
+        return false;
+    }
+}

src/teavm/java/me/ayunami2000/ayuncraft/CryptManager.java

@@ -0,0 +1,99 @@
+package me.ayunami2000.ayuncraft;
+
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.math.BigInteger;
+import java.security.Key;
+import java.security.PrivateKey;
+import java.security.PublicKey;
+
+import org.bouncycastle.crypto.BufferedBlockCipher;
+import org.bouncycastle.crypto.engines.AESFastEngine;
+import org.bouncycastle.crypto.io.CipherInputStream;
+import org.bouncycastle.crypto.io.CipherOutputStream;
+import org.bouncycastle.crypto.modes.CFBBlockCipher;
+import org.bouncycastle.crypto.params.KeyParameter;
+import org.bouncycastle.crypto.params.ParametersWithIV;
+
+import javax.crypto.SecretKey;
+import javax.crypto.spec.SecretKeySpec;
+
+public class CryptManager
+{
+    //i hate security !!
+    /**
+     * Generate a new shared secret AES key from a static preset key
+     */
+    private static final byte[] baseSharedKey = new byte[] {1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16};
+    public static SecretKey createNewSharedKey(){
+        return new SecretKeySpec(baseSharedKey,"AES");
+    }
+
+    /**
+     * Create a new PublicKey from encoded X.509 data
+     */
+    public static PublicKey decodePublicKey(byte[] par0ArrayOfByte)
+    {
+        return new ModifiablePublicKey("RSA","X.509",par0ArrayOfByte);
+    }
+
+    /**
+     * Decrypt shared secret AES key using RSA private key
+     */
+    public static SecretKey decryptSharedKey(PrivateKey par0PrivateKey, byte[] par1ArrayOfByte)
+    {
+        return new SecretKeySpec(decryptData(par0PrivateKey, par1ArrayOfByte), "AES");
+    }
+
+    private static RSA rsa=new RSA(2048);
+
+    /**
+     * Encrypt byte[] data with RSA public key
+     */
+    public static byte[] encryptData(Key par0Key, byte[] par1ArrayOfByte)
+    {
+        rsa.setPublicKey(new BigInteger(par0Key.getEncoded()));
+        BigInteger res=rsa.encrypt(new BigInteger(par1ArrayOfByte));
+        return res.toByteArray();
+    }
+
+    /**
+     * Decrypt byte[] data with RSA private key
+     */
+    public static byte[] decryptData(Key par0Key, byte[] par1ArrayOfByte)
+    {
+        rsa.setPrivateKey(new BigInteger(par0Key.getEncoded()));
+        BigInteger res=rsa.decrypt(new BigInteger(par1ArrayOfByte));
+        return res.toByteArray();
+    }
+
+    /**
+     * Create a new BufferedBlockCipher instance
+     */
+    public static BufferedBlockCipher createBufferedBlockCipher(boolean par0, Key par1Key)
+    {
+        BufferedBlockCipher var2 = new BufferedBlockCipher(new CFBBlockCipher(new AESFastEngine(), 8));
+        var2.init(par0, new ParametersWithIV(new KeyParameter(par1Key.getEncoded()), par1Key.getEncoded(), 0, 16));
+        return var2;
+    }
+
+    public static OutputStream encryptOuputStream(SecretKey par0SecretKey, OutputStream par1OutputStream)
+    {
+        return new CipherOutputStream(par1OutputStream, createBufferedBlockCipher(true, par0SecretKey));
+    }
+
+    public static InputStream decryptInputStream(SecretKey par0SecretKey, InputStream par1InputStream)
+    {
+        return new CipherInputStream(par1InputStream, createBufferedBlockCipher(false, par0SecretKey));
+    }
+
+    public static OutputStream encryptOuputStream(BufferedBlockCipher bufferedBlockCipher, OutputStream par1OutputStream)
+    {
+        return new CipherOutputStream(par1OutputStream, bufferedBlockCipher);
+    }
+
+    public static InputStream decryptInputStream(BufferedBlockCipher bufferedBlockCipher, InputStream par1InputStream)
+    {
+        return new CipherInputStream(par1InputStream, bufferedBlockCipher);
+    }
+}

src/teavm/java/me/ayunami2000/ayuncraft/ModifiablePublicKey.java

@@ -0,0 +1,30 @@
+package me.ayunami2000.ayuncraft;
+
+import java.security.PublicKey;
+
+public class ModifiablePublicKey implements PublicKey {
+    private String algorithm;
+    private String format;
+    private byte[] encoded;
+
+    @Override
+    public String getAlgorithm() {
+        return algorithm;
+    }
+
+    @Override
+    public String getFormat() {
+        return format;
+    }
+
+    @Override
+    public byte[] getEncoded() {
+        return encoded;
+    }
+
+    public ModifiablePublicKey(String algo,String form,byte[] data){
+        algorithm=algo;
+        format=form;
+        encoded=data;
+    }
+}

src/teavm/java/me/ayunami2000/ayuncraft/RSA.java

@@ -0,0 +1,106 @@
+package me.ayunami2000.ayuncraft;
+/******************************************************************************
+ *  Compilation:  javac RSA.java
+ *  Execution:    java RSA N
+ *  
+ *  Generate an N-bit public and private RSA key and use to encrypt
+ *  and decrypt a random message.
+ * 
+ *  % java RSA 50
+ *  public  = 65537
+ *  private = 553699199426609
+ *  modulus = 825641896390631
+ *  message   = 48194775244950
+ *  encrpyted = 321340212160104
+ *  decrypted = 48194775244950
+ *
+ *  Known bugs (not addressed for simplicity)
+ *  -----------------------------------------
+ *  - It could be the case that the message >= modulus. To avoid, use
+ *    a do-while loop to generate key until modulus happen to be exactly N bits.
+ *
+ *  - It's possible that gcd(phi, publicKey) != 1 in which case
+ *    the key generation fails. This will only happen if phi is a
+ *    multiple of 65537. To avoid, use a do-while loop to generate
+ *    keys until the gcd is 1.
+ *
+ ******************************************************************************/
+
+import java.math.BigInteger;
+import java.util.Random;
+
+
+public class RSA {
+   private final static BigInteger one      = new BigInteger("1");
+   private final static Random random = new Random();
+
+   private BigInteger privateKey;
+   private BigInteger publicKey;
+   private BigInteger modulus;
+
+   // generate an N-bit (roughly) public and private key
+   RSA(int N) {
+      BigInteger p = BigInteger.probablePrime(N/2, random);
+      BigInteger q = BigInteger.probablePrime(N/2, random);
+      BigInteger phi = (p.subtract(one)).multiply(q.subtract(one));
+
+      modulus    = p.multiply(q);                                  
+      publicKey  = new BigInteger("65537");     // common value in practice = 2^16 + 1
+      privateKey = publicKey.modInverse(phi);
+   }
+
+
+   BigInteger encrypt(BigInteger message) {
+      return message.modPow(publicKey, modulus);
+   }
+
+   BigInteger decrypt(BigInteger encrypted) {
+      return encrypted.modPow(privateKey, modulus);
+   }
+
+
+   void setPublicKey(BigInteger k) {
+      publicKey=k;
+   }
+
+   void setPrivateKey(BigInteger k) {
+      privateKey=k;
+   }
+
+
+   BigInteger getPublicKey() {
+      return publicKey;
+   }
+
+   BigInteger getPrivateKey() {
+      return privateKey;
+   }
+
+   public String toString() {
+      String s = "";
+      s += "public  = " + publicKey  + "\n";
+      s += "private = " + privateKey + "\n";
+      s += "modulus = " + modulus;
+      return s;
+   }
+ 
+   public static void main(String[] args) {
+      int N = Integer.parseInt(args[0]);
+      RSA key = new RSA(N);
+      System.out.println(key);
+ 
+      // create random message, encrypt and decrypt
+      BigInteger message = new BigInteger(N-1, random);
+
+      //// create message by converting string to integer
+      // String s = "test";
+      // byte[] bytes = s.getBytes();
+      // BigInteger message = new BigInteger(bytes);
+
+      BigInteger encrypt = key.encrypt(message);
+      BigInteger decrypt = key.decrypt(encrypt);
+      System.out.println("message   = " + message);
+      System.out.println("encrypted = " + encrypt);
+      System.out.println("decrypted = " + decrypt);
+   }
+}