From 80c7ee9eaf0ee46bda306fc5410bd3d741f6912e Mon Sep 17 00:00:00 2001
From: jmarchan-ByTel <89838314+jmarchan-ByTel@users.noreply.github.com>
Date: Mon, 2 Dec 2024 22:02:37 +0100
Subject: [PATCH] unset($block);

Optional but increase quality Score
---
 phpseclib/Crypt/Salsa20.php | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/phpseclib/Crypt/Salsa20.php b/phpseclib/Crypt/Salsa20.php
index 0a35f478d..785e7aa2d 100644
--- a/phpseclib/Crypt/Salsa20.php
+++ b/phpseclib/Crypt/Salsa20.php
@@ -326,7 +326,7 @@ private function crypt($text, $mode)
             foreach ($blocks as &$block) {
                 $block ^= static::salsa20($this->p1 . pack('V', $i++) . $this->p2);
             }
-
+            unset($block);
             return implode('', $blocks);
         }
 
@@ -366,6 +366,7 @@ private function crypt($text, $mode)
                     foreach ($blocks as &$block) {
                         $block ^= static::salsa20($this->p1 . pack('V', $buffer['counter']++) . $this->p2);
                     }
+                    unset($block);
                 }
                 $encrypted = implode('', $blocks);
                 $temp = static::salsa20($this->p1 . pack('V', $buffer['counter']++) . $this->p2);
@@ -388,6 +389,7 @@ private function crypt($text, $mode)
                 foreach ($blocks as &$block) {
                     $block ^= static::salsa20($this->p1 . pack('V', $buffer['counter']++) . $this->p2);
                 }
+                unset($block);
                 $ciphertext .= implode('', $blocks);
             }
         }