security/keymint/aidl/android/hardware/security/keymint/DeviceInfo.aidl

/*
 * Copyright (C) 2021 The Android Open Source Project
 *
 * 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.
 */

package android.hardware.security.keymint;

/**
 * DeviceInfo contains information about the device that's fed in as AAD in the signature of the
 * device private key over the MAC key used for the bundle of public keys. These values are intended
 * to be checked by the server to verify that the certificate signing request crafted by
 * an IRemotelyProvisionedComponent HAL instance is coming from the expected device based
 * on values initially uploaded during device manufacture in the factory.
 * @hide
 */
@VintfStability
parcelable DeviceInfo {
    /**
     * DeviceInfo is a CBOR Map structure described by the following CDDL. DeviceInfo must be
     * canonicalized according to the specification in RFC 7049. The ordering presented here is
     * non-canonical to group similar entries semantically.
     *
     *     DeviceInfo = {
     *         "brand" : tstr,
     *         "manufacturer" : tstr,
     *         "product" : tstr,
     *         "model" : tstr,
     *         "device" : tstr,
     *         "vb_state" : "green" / "yellow" / "orange",    // Taken from the AVB values
     *         "bootloader_state" : "locked" / "unlocked",    // Taken from the AVB values
     *         "vbmeta_digest": bstr,                         // Taken from the AVB values
     *         ? "os_version" : tstr,                         // Same as
     *                                                        // android.os.Build.VERSION.release
     *                                                        // Not optional for TEE.
     *         "system_patch_level" : uint,                   // YYYYMMDD
     *         "boot_patch_level" : uint,                     // YYYYMMDD
     *         "vendor_patch_level" : uint,                   // YYYYMMDD
     *         "version" : 2,                                 // The CDDL schema version.
     *         "security_level" : "tee" / "strongbox",
     *         "fused": 1 / 0,  // 1 if secure boot is enforced for the processor that the IRPC
     *                          // implementation is contained in. 0 otherwise.
     *     }
     */
    byte[] deviceInfo;
}