diff --git a/src/main/java/cc/baka9/catseedlogin/util/Crypt.java b/src/main/java/cc/baka9/catseedlogin/util/Crypt.java
index 6a5d93b..f48be22 100644
--- a/src/main/java/cc/baka9/catseedlogin/util/Crypt.java
+++ b/src/main/java/cc/baka9/catseedlogin/util/Crypt.java
@@ -1,5 +1,3 @@
-package cc.baka9.catseedlogin.util;
-
 import java.nio.charset.StandardCharsets;
 import java.security.MessageDigest;
 import java.security.NoSuchAlgorithmException;
@@ -8,32 +6,26 @@ public class Crypt {
 
     private static final char[] CRYPTCHARS = {'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f'};
 
-    public static String encrypt(final String name, final String password){
-        final String text = "ÜÄaeut//&/=I " + password + "7421€547" + name + "__+IÄIH§%NK " + password;
+    public static String encrypt(String name, String password) {
         try {
-            final MessageDigest md = MessageDigest.getInstance("SHA-512");
-            md.update(text.getBytes(StandardCharsets.UTF_8), 0, text.length());
+            MessageDigest md = MessageDigest.getInstance("SHA-512");
+            md.update(("ÜÄaeut//&/=I " + password + "7421€547" + name + "__+IÄIH§%NK " + password).getBytes(StandardCharsets.UTF_8));
             return toHexString(md.digest());
-        } catch (final NoSuchAlgorithmException e) {
+        } catch (NoSuchAlgorithmException e) {
             return null;
         }
     }
 
-    public static String toHexString(byte... args){
-        char[] chars = new char[args.length * 2];
-        for (int i = 0; i < args.length; i++) {
-            chars[(i * 2)] = CRYPTCHARS[(args[i] >> 4 & 0xF)];
-            chars[(i * 2 + 1)] = CRYPTCHARS[(args[i] & 0xF)];
+    private static String toHexString(byte[] bytes) {
+        char[] chars = new char[bytes.length * 2];
+        for (int i = 0, j = 0; i < bytes.length; i++) {
+            chars[j++] = CRYPTCHARS[(bytes[i] >> 4) & 0xF];
+            chars[j++] = CRYPTCHARS[bytes[i] & 0xF];
         }
         return new String(chars);
     }
 
-    public boolean match(final String name, final String password, final String encrypted){
-        try {
-            return encrypted.equals(encrypt(name, password));
-        } catch (final Exception e) {
-            return false;
-        }
+    public static boolean match(String name, String password, String encrypted) {
+        return encrypted.equals(encrypt(name, password));
     }
-
-}
+}
\ No newline at end of file