content/public/browser/media_device_id.h

   1 // Copyright 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4 //
   5 // Media device IDs come in two flavors: The machine-wide unique ID of
   6 // the device, which is what we use on the browser side, and one-way
   7 // hashes over the unique ID and a security origin, which we provide
   8 // to code on the renderer side as per-security-origin IDs.
   9
  10 #ifndef CONTENT_PUBLIC_BROWSER_MEDIA_DEVICE_ID_H_
  11 #define CONTENT_PUBLIC_BROWSER_MEDIA_DEVICE_ID_H_
  12
  13 #include <string>
  14
  15 #include "content/common/content_export.h"
  16 #include "url/gurl.h"
  17
  18 namespace content {
  19
  20 // Generates a one-way hash of a device's unique ID usable by one
  21 // particular security origin.
  22 CONTENT_EXPORT std::string GetHMACForMediaDeviceID(
  23     const GURL& security_origin,
  24     const std::string& raw_unique_id);
  25
  26 // Convenience method to check if |device_guid| is an HMAC of
  27 // |raw_device_id| for |security_origin|.
  28 CONTENT_EXPORT bool DoesMediaDeviceIDMatchHMAC(
  29     const GURL& security_origin,
  30     const std::string& device_guid,
  31     const std::string& raw_unique_id);
  32
  33 }  // namespace content
  34
  35 #endif  // CONTENT_PUBLIC_BROWSER_MEDIA_DEVICE_ID_H_