From dfb3ec36b52ef4703a701c77e61a22b0a79c1359 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ernesto=20Garc=C3=ADa?= <ernestognw@gmail.com>
Date: Tue, 3 Sep 2024 11:37:09 -0600
Subject: [PATCH] Make padding skip clear in Base64URL encoding (#5176)

---
 contracts/utils/Base64.sol | 1 +
 1 file changed, 1 insertion(+)

diff --git a/contracts/utils/Base64.sol b/contracts/utils/Base64.sol
index be0b7d687fb..ef9431b5578 100644
--- a/contracts/utils/Base64.sol
+++ b/contracts/utils/Base64.sol
@@ -23,6 +23,7 @@ library Base64 {
 
     /**
      * @dev Converts a `bytes` to its Bytes64Url `string` representation.
+     * Output is not padded with `=` as specified in https://www.rfc-editor.org/rfc/rfc4648[rfc4648].
      */
     function encodeURL(bytes memory data) internal pure returns (string memory) {
         return _encode(data, _TABLE_URL, false);