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// Copyright 2017 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef MEDIA_CDM_PLATFORM_VERIFICATION_H_
#define MEDIA_CDM_PLATFORM_VERIFICATION_H_
#include <string>
#include <vector>
#include "base/callback.h"
#include "base/macros.h"
#include "media/base/media_export.h"
namespace media {
class MEDIA_EXPORT PlatformVerification {
public:
PlatformVerification() = default;
virtual ~PlatformVerification() = default;
using ChallengePlatformCB =
base::OnceCallback<void(bool success,
const std::string& signed_data,
const std::string& signed_data_signature,
const std::string& platform_key_certificate)>;
using StorageIdCB =
base::OnceCallback<void(uint32_t version,
const std::vector<uint8_t>& storage_id)>;
// Allows authorized services to verify that the underlying platform is
// trusted. An example of a trusted platform is a Chrome OS device in
// verified boot mode. This can be used for protected content playback.
//
// |service_id| is the service ID for the |challenge|. |challenge| is the
// challenge data. |callback| will be called with the following values:
// - |success|: whether the platform is successfully verified. If true/false
// the following 3 parameters should be non-empty/empty.
// - |signed_data|: the data signed by the platform.
// - |signed_data_signature|: the signature of the signed data block.
// - |platform_key_certificate|: the device specific certificate for the
// requested service.
virtual void ChallengePlatform(const std::string& service_id,
const std::string& challenge,
ChallengePlatformCB callback) = 0;
// Requests a specific version of the device's Storage Id. If |version| = 0,
// the latest available version will be returned. |callback| will be called
// with the following values:
// - |version|: The version of the device's Storage Id being requested.
// - |storage_id|: The device's Storage Id. It may be empty if Storage Id
// is not supported by the platform, or if the requested
// version does not exist.
virtual void GetStorageId(uint32_t version, StorageIdCB callback) = 0;
private:
DISALLOW_COPY_AND_ASSIGN(PlatformVerification);
};
} // namespace media
#endif // MEDIA_CDM_PLATFORM_VERIFICATION_H_
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