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Refactor encrypt util class in preparation for forge support.

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This commit is contained in:
md_5 2013-05-03 19:10:54 +10:00
parent 6b504d9160
commit 6236cff658
1 changed files with 27 additions and 7 deletions
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34
proxy/src/main/java/net/md_5/bungee/EncryptionUtil.java
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@ -1,20 +1,20 @@
package net.md_5.bungee; package net.md_5.bungee;
import java.security.GeneralSecurityException; import java.security.GeneralSecurityException;
import java.security.InvalidKeyException;
import java.security.Key; import java.security.Key;
import java.security.KeyFactory;
import java.security.KeyPair; import java.security.KeyPair;
import java.security.KeyPairGenerator; import java.security.KeyPairGenerator;
import java.security.NoSuchAlgorithmException; import java.security.NoSuchAlgorithmException;
import java.security.PublicKey;
import java.security.spec.X509EncodedKeySpec;
import java.util.Arrays; import java.util.Arrays;
import java.util.Random; import java.util.Random;
import javax.crypto.BadPaddingException;
import javax.crypto.Cipher; import javax.crypto.Cipher;
import javax.crypto.IllegalBlockSizeException;
import javax.crypto.NoSuchPaddingException;
import javax.crypto.SecretKey; import javax.crypto.SecretKey;
import javax.crypto.spec.IvParameterSpec; import javax.crypto.spec.IvParameterSpec;
import javax.crypto.spec.SecretKeySpec; import javax.crypto.spec.SecretKeySpec;
import lombok.Getter;
import net.md_5.bungee.packet.PacketFCEncryptionResponse; import net.md_5.bungee.packet.PacketFCEncryptionResponse;
import net.md_5.bungee.packet.PacketFDEncryptionRequest; import net.md_5.bungee.packet.PacketFDEncryptionRequest;
@ -26,14 +26,22 @@ public class EncryptionUtil
private static final Random random = new Random(); private static final Random random = new Random();
public static KeyPair keys; public static KeyPair keys;
@Getter
private static SecretKey secret = new SecretKeySpec( new byte[ 16 ], "AES" );
public static PacketFDEncryptionRequest encryptRequest() throws NoSuchAlgorithmException static
{ {
if ( keys == null ) try
{ {
keys = KeyPairGenerator.getInstance( "RSA" ).generateKeyPair(); keys = KeyPairGenerator.getInstance( "RSA" ).generateKeyPair();
} catch ( NoSuchAlgorithmException ex )
{
throw new ExceptionInInitializerError( ex );
}
} }
public static PacketFDEncryptionRequest encryptRequest()
{
String hash = ( BungeeCord.getInstance().config.isOnlineMode() ) ? Long.toString( random.nextLong(), 16 ) : "-"; String hash = ( BungeeCord.getInstance().config.isOnlineMode() ) ? Long.toString( random.nextLong(), 16 ) : "-";
byte[] pubKey = keys.getPublic().getEncoded(); byte[] pubKey = keys.getPublic().getEncoded();
byte[] verify = new byte[ 4 ]; byte[] verify = new byte[ 4 ];
@ -41,7 +49,7 @@ public class EncryptionUtil
return new PacketFDEncryptionRequest( hash, pubKey, verify ); return new PacketFDEncryptionRequest( hash, pubKey, verify );
} }
public static SecretKey getSecret(PacketFCEncryptionResponse resp, PacketFDEncryptionRequest request) throws BadPaddingException, IllegalBlockSizeException, IllegalStateException, InvalidKeyException, NoSuchAlgorithmException, NoSuchPaddingException public static SecretKey getSecret(PacketFCEncryptionResponse resp, PacketFDEncryptionRequest request) throws GeneralSecurityException
{ {
Cipher cipher = Cipher.getInstance( "RSA" ); Cipher cipher = Cipher.getInstance( "RSA" );
cipher.init( Cipher.DECRYPT_MODE, keys.getPrivate() ); cipher.init( Cipher.DECRYPT_MODE, keys.getPrivate() );
@ -65,4 +73,16 @@ public class EncryptionUtil
cip.init( opMode, shared, new IvParameterSpec( shared.getEncoded() ) ); cip.init( opMode, shared, new IvParameterSpec( shared.getEncoded() ) );
return cip; return cip;
} }
public static PublicKey getPubkey(PacketFDEncryptionRequest request) throws GeneralSecurityException
{
return KeyFactory.getInstance( "RSA" ).generatePublic( new X509EncodedKeySpec( request.publicKey ) );
}
public static byte[] encrypt(Key key, byte[] b) throws GeneralSecurityException
{
Cipher hasher = Cipher.getInstance( "RSA" );
hasher.init( Cipher.ENCRYPT_MODE, key );
return hasher.doFinal( b );
}
} }