arc/keymaster/proto/key_data.proto

// Copyright 2020 The Chromium OS Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

syntax = "proto3";

package arc.keymaster.context;

// Standard ARC++ key material.
message ArcKeyData {
  // Blob containing the actual key material.
  bytes key_material = 1;
}

// Metadata holder for keys owned by chaps.
message ChapsKeyData {
  // PKCS#11 ID (CKA_ID).
  bytes id = 1;
  // PKCS#11 label (CKA_LABEL).
  string label = 2;
}

// Extensible structure for key data from diverse sources.
message KeyData {
  // Sets of Keymaster tags.
  bytes hw_enforced_tags = 1;
  bytes sw_enforced_tags = 2;

  // Source-specific key data.
  oneof data {
    // Data for ARC++ KeyStore keys.
    ArcKeyData arc_key = 3;
    // Data for chaps owned keys.
    ChapsKeyData chaps_key = 4;
  }
}