diff --git a/hkexnet.go b/hkexnet.go
index ec0e699..30c4d05 100644
--- a/hkexnet.go
+++ b/hkexnet.go
@@ -16,9 +16,13 @@
 package herradurakex
 
 import (
+	"crypto/aes"
+	"crypto/cipher"
 	"fmt"
+	"io"
 	"math/big"
 	"net"
+	"os"
 )
 
 /*---------------------------------------------------------------------*/