runff 1.0 commit

lib/aws/Aws/HashInterface.php

@@ -0,0 +1,27 @@
+<?php
+namespace Aws;
+
+/**
+ * Interface that allows implementing various incremental hashes.
+ */
+interface HashInterface
+{
+    /**
+     * Adds data to the hash.
+     *
+     * @param string $data Data to add to the hash
+     */
+    public function update($data);
+
+    /**
+     * Finalizes the incremental hash and returns the resulting digest.
+     *
+     * @return string
+     */
+    public function complete();
+
+    /**
+     * Removes all data from the hash, effectively starting a new hash.
+     */
+    public function reset();
+}