diff --git a/src/Lib/Encrypt/DSA.php b/src/Lib/Encrypt/DSA.php
index bb6d572..41ae93f 100644
--- a/src/Lib/Encrypt/DSA.php
+++ b/src/Lib/Encrypt/DSA.php
@@ -22,7 +22,7 @@ public static function signPrivateFromFile($data, $fileName)
             throw new \Exception('私钥文件格式错误');
         }
         openssl_sign($data, $sign, $res, OPENSSL_ALGO_DSS1);
-        if (PHP_VERSION_ID >= 80000)
+        if (PHP_VERSION_ID < 80000)
         {
             openssl_free_key($res);
         }
@@ -47,7 +47,7 @@ public static function verifyPublicFromFile($data, $fileName, $sign)
             throw new \Exception('公钥文件格式错误');
         }
         $result = openssl_verify($data, $sign, $res, OPENSSL_ALGO_DSS1);
-        if (PHP_VERSION_ID >= 80000)
+        if (PHP_VERSION_ID < 80000)
         {
             openssl_free_key($res);
         }
diff --git a/src/Lib/Encrypt/RSA.php b/src/Lib/Encrypt/RSA.php
index 7189d68..6b36303 100644
--- a/src/Lib/Encrypt/RSA.php
+++ b/src/Lib/Encrypt/RSA.php
@@ -22,7 +22,7 @@ public static function signPrivateFromFile($data, $fileName)
             throw new \Exception('私钥文件格式错误');
         }
         openssl_sign($data, $sign, $res, \OPENSSL_ALGO_SHA1);
-        if (PHP_VERSION_ID >= 80000)
+        if (PHP_VERSION_ID < 80000)
         {
             openssl_free_key($res);
         }
@@ -47,7 +47,7 @@ public static function verifyPublicFromFile($data, $fileName, $sign)
             throw new \Exception('公钥文件格式错误');
         }
         $result = openssl_verify($data, $sign, $res, \OPENSSL_ALGO_SHA1);
-        if (PHP_VERSION_ID >= 80000)
+        if (PHP_VERSION_ID < 80000)
         {
             openssl_free_key($res);
         }
@@ -63,7 +63,7 @@ public static function encryptPublicFromFile($data, $fileName)
             throw new \Exception('公钥文件格式错误');
         }
         openssl_public_encrypt($data, $result, $res, \OPENSSL_PKCS1_OAEP_PADDING);
-        if (PHP_VERSION_ID >= 80000)
+        if (PHP_VERSION_ID < 80000)
         {
             openssl_free_key($res);
         }
diff --git a/src/Lib/Encrypt/RSA2.php b/src/Lib/Encrypt/RSA2.php
index c4ee5fd..24d3832 100644
--- a/src/Lib/Encrypt/RSA2.php
+++ b/src/Lib/Encrypt/RSA2.php
@@ -30,7 +30,7 @@ public static function signPrivateFromFile($data, $fileName)
             throw new \Exception('私钥文件格式错误');
         }
         openssl_sign($data, $sign, $res, \OPENSSL_ALGO_SHA256);
-        if (PHP_VERSION_ID >= 80000)
+        if (PHP_VERSION_ID < 80000)
         {
             openssl_free_key($res);
         }
@@ -63,7 +63,7 @@ public static function verifyPublicFromFile($data, $fileName, $sign)
             throw new \Exception('公钥文件格式错误');
         }
         $result = openssl_verify($data, $sign, $res, \OPENSSL_ALGO_SHA256);
-        if (PHP_VERSION_ID >= 80000)
+        if (PHP_VERSION_ID < 80000)
         {
             openssl_free_key($res);
         }