android/libwvdrmengine/cdm/core/src/device_files.proto

// ----------------------------------------------------------------------------
// device_files.proto
// ----------------------------------------------------------------------------
// Copyright 2013 Google Inc. All Rights Reserved.
//
// Description:
//   Format of various files stored at the device.
//
syntax = "proto2";

package video_widevine_client.sdk;

// need this if we are using libprotobuf-cpp-2.3.0-lite
option optimize_for = LITE_RUNTIME;

message DeviceCertificate {
  optional bytes certificate = 1;
  optional bytes wrapped_private_key = 2;
}

message License {
  enum LicenseState {
    ACTIVE = 1;
    RELEASING = 2;
  }

  optional LicenseState state = 1;
  optional bytes pssh_data = 2;
  optional bytes license_request = 3;
  optional bytes license = 4;
  optional bytes renewal_request = 5;
  optional bytes renewal = 6;
  optional bytes release_server_url = 7;
}

message UsageInfo {
  message ProviderSession {
    optional bytes token = 1;
    optional bytes license_request = 2;
    optional bytes license = 3;
  }

  repeated ProviderSession sessions = 1;
}

message File {
  enum FileType {
    DEVICE_CERTIFICATE = 1;
    LICENSE = 2;
    USAGE_INFO = 3;
  }

  enum FileVersion {
    VERSION_1 = 1;
  }

  optional FileType type = 1;
  optional FileVersion version = 2 [default = VERSION_1];
  optional DeviceCertificate device_certificate = 3;
  optional License license = 4;
  optional UsageInfo usage_info = 5;
}

message HashedFile {
  optional bytes file = 1;
  // A raw (not hex-encoded) SHA256, taken over the bytes of 'file'.
  optional bytes hash = 2;
}