Prevent making an unnecessary copy when encoding bytes.

Author: dlongley

CHANGELOG.md

@@ -1,5 +1,10 @@
 # @digitalbazaar/http-digest-header Changelog
 
+## 2.2.1 - 2025-10-dd
+
+### Fixed
+- Prevent making an unnecessary copy when encoding bytes.
+
 ## 2.2.0 - 2025-10-08
 
 ### Changed

lib/util.js

@@ -2,9 +2,11 @@
  * Copyright (c) 2021-2025 Digital Bazaar, Inc. All rights reserved.
  */
 export function base64Encode(bytes) {
-  return Buffer.from(bytes).toString('base64');
+  return Buffer.from(bytes.buffer, bytes.offset, bytes.length)
+    .toString('base64');
 }
 
 export function base64urlEncode(bytes) {
-  return Buffer.from(bytes).toString('base64url');
+  return Buffer.from(bytes.buffer, bytes.offset, bytes.length)
+    .toString('base64url');
 }