From 39e8fb2036945303836c461a61f133b0059c8991 Mon Sep 17 00:00:00 2001
From: Christian Cleberg <hello@cleberg.net>
Date: Mon, 22 May 2023 15:19:08 -0500
Subject: initial commit

---
 vendor/eher/oauth/src/Eher/OAuth/HmacSha1.php | 31 +++++++++++++++++++++++++++
 1 file changed, 31 insertions(+)
 create mode 100644 vendor/eher/oauth/src/Eher/OAuth/HmacSha1.php

(limited to 'vendor/eher/oauth/src/Eher/OAuth/HmacSha1.php')

diff --git a/vendor/eher/oauth/src/Eher/OAuth/HmacSha1.php b/vendor/eher/oauth/src/Eher/OAuth/HmacSha1.php
new file mode 100644
index 0000000..be7da63
--- /dev/null
+++ b/vendor/eher/oauth/src/Eher/OAuth/HmacSha1.php
@@ -0,0 +1,31 @@
+<?php
+
+namespace Eher\OAuth;
+
+/**
+ * The HMAC-SHA1 signature method uses the HMAC-SHA1 signature algorithm as defined in [RFC2104]
+ * where the Signature Base String is the text and the key is the concatenated values (each first
+ * encoded per Parameter Encoding) of the Consumer Secret and Token Secret, separated by an '&'
+ * character (ASCII code 38) even if empty.
+ *   - Chapter 9.2 ("HMAC-SHA1")
+ */
+class HmacSha1 extends SignatureMethod {
+  function get_name() {
+    return "HMAC-SHA1";
+  }
+
+  public function build_signature($request, $consumer, $token) {
+    $base_string = $request->get_signature_base_string();
+    $request->base_string = $base_string;
+
+    $key_parts = array(
+      $consumer->secret,
+      ($token) ? $token->secret : ""
+    );
+
+    $key_parts = Util::urlencode_rfc3986($key_parts);
+    $key = implode('&', $key_parts);
+
+    return base64_encode(hash_hmac('sha1', $base_string, $key, true));
+  }
+}
-- 
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