diff --git a/src/main/java/com/imyeyu/utils/Decryptor.java b/src/main/java/com/imyeyu/utils/Decryptor.java
index 6e0e692..48cd7c1 100644
--- a/src/main/java/com/imyeyu/utils/Decryptor.java
+++ b/src/main/java/com/imyeyu/utils/Decryptor.java
@@ -22,7 +22,7 @@ public class Decryptor {
 	 * @param key  密钥
 	 * @return 解密结果
 	 */
-	public byte[] aes(String data, byte[] key) {
+	public static byte[] aes(String data, byte[] key) {
 		return aes(data.getBytes(), key);
 	}
 
@@ -33,7 +33,7 @@ public class Decryptor {
 	 * @param key  密钥
 	 * @return 解密结果
 	 */
-	public byte[] aes(byte[] data, byte[] key) {
+	public static byte[] aes(byte[] data, byte[] key) {
 		try {
 			SecretKey secretKey = new SecretKeySpec(key, "AES");
 			Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding");
diff --git a/src/main/java/com/imyeyu/utils/Encryptor.java b/src/main/java/com/imyeyu/utils/Encryptor.java
index eb84134..1e0714c 100644
--- a/src/main/java/com/imyeyu/utils/Encryptor.java
+++ b/src/main/java/com/imyeyu/utils/Encryptor.java
@@ -16,11 +16,11 @@ import java.security.NoSuchAlgorithmException;
  */
 public class Encryptor {
 
-	public byte[] aesKey() {
+	public static byte[] aesKey() {
 		return aesKey(256);
 	}
 
-	public byte[] aesKey(int size) {
+	public static byte[] aesKey(int size) {
 		try {
 			KeyGenerator keyGen = KeyGenerator.getInstance("AES");
 			keyGen.init(size);
@@ -37,7 +37,7 @@ public class Encryptor {
 	 * @param key  密钥
 	 * @return 加密结果
 	 */
-	public byte[] aes(String data, byte[] key) {
+	public static byte[] aes(String data, byte[] key) {
 		return aes(data.getBytes(), key);
 	}
 
@@ -48,7 +48,7 @@ public class Encryptor {
 	 * @param key  密钥
 	 * @return 加密结果
 	 */
-	public byte[] aes(byte[] data, byte[] key) {
+	public static byte[] aes(byte[] data, byte[] key) {
 		try {
 			SecretKey secretKey = new SecretKeySpec(key, "AES");
 			Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding");