diff --git a/core/lib/Drupal/Component/Utility/Crypt.php b/core/lib/Drupal/Component/Utility/Crypt.php
index 0a530e7..bd6c133 100644
--- a/core/lib/Drupal/Component/Utility/Crypt.php
+++ b/core/lib/Drupal/Component/Utility/Crypt.php
@@ -142,9 +142,12 @@ public static function randomBytesBase64($count = 32) {
   }
 
   /**
-   * Get a shortened sha256 hash.
+   * Generates a shortened sha256 hash. While there is always the risk of
+   * collision (when different $data generate the same hash), shortened hashes
+   * increase that risk. This function should only be used when that additional
+   * risk is acceptable.
    *
-   * @param string $name
+   * @param string $data
    *   Message to be hashed.
    * @param string $key
    *   Shared secret key.
@@ -154,12 +157,12 @@ public static function randomBytesBase64($count = 32) {
    * @return string
    *   A sha256 base 36 encoded shortened hash.
    */
-  public static function shortHash($name, $key = NULL, $length = self::SHORT_HASH_LENGTH_DEFAULT) {
+  public static function shortHash($data, $key = NULL, $length = self::SHORT_HASH_LENGTH_DEFAULT) {
     if ($key) {
-      return substr(base_convert(hash_hmac('sha256', $name, $key), 16, 36), 0, $length);
+      return substr(base_convert(hash_hmac('sha256', $data, $key), 16, 36), 0, $length);
     }
     else {
-      return substr(base_convert(hash('sha256', $name), 16, 36), 0, $length);
+      return substr(base_convert(hash('sha256', $data), 16, 36), 0, $length);
     }
   }