diff --git a/crypto/cryptoService.go b/crypto/cryptoService.go
index 4252738..ddbc5ae 100644
--- a/crypto/cryptoService.go
+++ b/crypto/cryptoService.go
@@ -74,7 +74,10 @@ func (cryptoService *CryptoService) EncryptByAES(msg []byte) (encryptedBytes []b
 
 func (cryptoService *CryptoService) DecryptByAES(encryptedBytes []byte) (decryptedBytes []byte, err error) {
 	//CBC解密
-	block, _ := aes.NewCipher(cryptoService.aesPriKey)                              // 分组秘钥
+	block, err := aes.NewCipher(cryptoService.aesPriKey) // 分组秘钥
+	if err != nil {
+		return
+	}
 	blockSize := block.BlockSize()                                                  // 获取秘钥块的长度
 	blockMode := cipher.NewCBCDecrypter(block, cryptoService.aesPriKey[:blockSize]) // 加密模式
 	decryptedBytes = make([]byte, len(encryptedBytes))                              // 创建数组