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system/vendor/google/auth/src/SignBlobInterface.php

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+<?php
+/*
+ * Copyright 2019 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+namespace Google\Auth;
+
+/**
+ * Describes a class which supports signing arbitrary strings.
+ */
+interface SignBlobInterface extends FetchAuthTokenInterface
+{
+    /**
+     * Sign a string using the method which is best for a given credentials type.
+     *
+     * @param string $stringToSign The string to sign.
+     * @param bool $forceOpenssl Require use of OpenSSL for local signing. Does
+     *        not apply to signing done using external services. **Defaults to**
+     *        `false`.
+     * @return string The resulting signature. Value should be base64-encoded.
+     */
+    public function signBlob($stringToSign, $forceOpenssl = false);
+
+    /**
+     * Returns the current Client Name.
+     *
+     * @param callable $httpHandler callback which delivers psr7 request, if
+     *     one is required to obtain a client name.
+     * @return string
+     */
+    public function getClientName(callable $httpHandler = null);
+}