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-rw-r--r--application/http/Base64Url.php35
1 files changed, 35 insertions, 0 deletions
diff --git a/application/http/Base64Url.php b/application/http/Base64Url.php
new file mode 100644
index 00000000..33fa7c1f
--- /dev/null
+++ b/application/http/Base64Url.php
@@ -0,0 +1,35 @@
1<?php
2
3namespace Shaarli\Http;
4
5/**
6 * URL-safe Base64 operations
7 *
8 * @see https://en.wikipedia.org/wiki/Base64#URL_applications
9 */
10class Base64Url
11{
12 /**
13 * Base64Url-encodes data
14 *
15 * @param string $data Data to encode
16 *
17 * @return string Base64Url-encoded data
18 */
19 public static function encode($data)
20 {
21 return rtrim(strtr(base64_encode($data), '+/', '-_'), '=');
22 }
23
24 /**
25 * Decodes Base64Url-encoded data
26 *
27 * @param string $data Data to decode
28 *
29 * @return string Decoded data
30 */
31 public static function decode($data)
32 {
33 return base64_decode(str_pad(strtr($data, '-_', '+/'), strlen($data) % 4, '=', STR_PAD_RIGHT));
34 }
35}