Restructure "net" packages

src/main/java/net/encryption/ClientCyphers.java

@@ -0,0 +1,27 @@
+package net.encryption;
+
+import constants.net.ServerConstants;
+
+public class ClientCyphers {
+    private final MapleAESOFB send;
+    private final MapleAESOFB receive;
+
+    private ClientCyphers(MapleAESOFB send, MapleAESOFB receive) {
+        this.send = send;
+        this.receive = receive;
+    }
+
+    public static ClientCyphers of(InitializationVector sendIv, InitializationVector receiveIv) {
+        MapleAESOFB send = new MapleAESOFB(sendIv, (short) (0xFFFF - ServerConstants.VERSION));
+        MapleAESOFB receive = new MapleAESOFB(receiveIv, ServerConstants.VERSION);
+        return new ClientCyphers(send, receive);
+    }
+
+    public MapleAESOFB getSendCypher() {
+        return send;
+    }
+
+    public MapleAESOFB getReceiveCypher() {
+        return receive;
+    }
+}