Issue #1884830 by pwolanin: Fixed Regression - replace md5 in Filter module calls with sha2 hashes.

core/modules/filter/filter.module

@@ -1626,7 +1626,7 @@ function _filter_url_escape_comments($match, $escape = NULL) {
   // Replace all HTML coments with a '<!-- [hash] -->' placeholder.
   if ($mode) {
     $content = $match[1];
-    $hash = md5($content);
+    $hash = hash('sha256', $content);
     $comments[$hash] = $content;
     return "<!-- $hash -->";
   }

core/modules/filter/lib/Drupal/filter/Tests/FilterHtmlImageSecureTest.php

@@ -113,7 +113,7 @@ function testImageSource() {
       $comment[] = $image . ':';
       // Hash the image source in a custom test attribute, because it might
       // contain characters that confuse XPath.
-      $comment[] = '<img src="' . $image . '" testattribute="' . md5($image) . '" />';
+      $comment[] = '<img src="' . $image . '" testattribute="' . hash('sha256', $image) . '" />';
     }
     $edit = array(
       'comment_body[und][0][value]' => implode("\n", $comment),
@@ -121,7 +121,7 @@ function testImageSource() {
     $this->drupalPost('node/' . $this->node->nid, $edit, t('Save'));
     foreach ($images as $image => $converted) {
       $found = FALSE;
-      foreach ($this->xpath('//img[@testattribute="' . md5($image) . '"]') as $element) {
+      foreach ($this->xpath('//img[@testattribute="' . hash('sha256', $image) . '"]') as $element) {
         $found = TRUE;
         if ($converted == $red_x_image) {
           $this->assertEqual((string) $element['src'], $red_x_image);