添加网站文件

vendor/alibabacloud/client/src/Signature/ShaHmac256Signature.php

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+<?php
+
+namespace AlibabaCloud\Client\Signature;
+
+/**
+ * Class ShaHmac256Signature
+ *
+ * @package   AlibabaCloud\Signature
+ */
+class ShaHmac256Signature extends Signature implements SignatureInterface
+{
+
+    /**
+     * @return string
+     */
+    public function getMethod()
+    {
+        return 'HMAC-SHA256';
+    }
+
+    /**
+     * @return string
+     */
+    public function getType()
+    {
+        return '';
+    }
+
+    /**
+     * @return string
+     */
+    public function getVersion()
+    {
+        return '1.0';
+    }
+
+    /**
+     * @param string $string
+     * @param string $accessKeySecret
+     *
+     * @return string
+     */
+    public function sign($string, $accessKeySecret)
+    {
+        return base64_encode(hash_hmac('sha256', $string, $accessKeySecret, true));
+    }
+}