Add comment on the amount of entropy

tvdijen · tvdijen · commit 84c39098a9bc · 2025-12-17T17:29:04.000+01:00
diff --git a/src/XML/Utils/Random.php b/src/XML/Utils/Random.php
@@ -14,6 +14,8 @@ class Random
 {
     /**
      * The fixed length of random identifiers.
+     *
+     * (43 - 1) / 2 = 21 → random_bytes(21) → 168 bits
      */
     public const int ID_LENGTH = 43;
 

Original file line number	Diff line number	Diff line change
`@@ -14,6 +14,8 @@ class Random`
`14`	`14`	`{`
`15`	`15`	`/**`
`16`	`16`	`* The fixed length of random identifiers.`
	`17`	`+ *`
	`18`	`+ * (43 - 1) / 2 = 21 → random_bytes(21) → 168 bits`
`17`	`19`	`*/`
`18`	`20`	`public const int ID_LENGTH = 43;`
`19`	`21`