1 /* 2 * Copyright (C) 2012 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #pragma once 18 19 // clang-format off 20 21 #define KEYMASTER_PORT "com.android.trusty.keymaster" 22 #define KEYMASTER_MAX_BUFFER_LENGTH 4096 23 24 // Commands 25 enum keymaster_command : uint32_t { 26 KEYMASTER_RESP_BIT = 1, 27 KEYMASTER_STOP_BIT = 2, 28 KEYMASTER_REQ_SHIFT = 2, 29 30 KM_GENERATE_KEY = (0 << KEYMASTER_REQ_SHIFT), 31 KM_BEGIN_OPERATION = (1 << KEYMASTER_REQ_SHIFT), 32 KM_UPDATE_OPERATION = (2 << KEYMASTER_REQ_SHIFT), 33 KM_FINISH_OPERATION = (3 << KEYMASTER_REQ_SHIFT), 34 KM_ABORT_OPERATION = (4 << KEYMASTER_REQ_SHIFT), 35 KM_IMPORT_KEY = (5 << KEYMASTER_REQ_SHIFT), 36 KM_EXPORT_KEY = (6 << KEYMASTER_REQ_SHIFT), 37 KM_GET_VERSION = (7 << KEYMASTER_REQ_SHIFT), 38 KM_ADD_RNG_ENTROPY = (8 << KEYMASTER_REQ_SHIFT), 39 KM_GET_SUPPORTED_ALGORITHMS = (9 << KEYMASTER_REQ_SHIFT), 40 KM_GET_SUPPORTED_BLOCK_MODES = (10 << KEYMASTER_REQ_SHIFT), 41 KM_GET_SUPPORTED_PADDING_MODES = (11 << KEYMASTER_REQ_SHIFT), 42 KM_GET_SUPPORTED_DIGESTS = (12 << KEYMASTER_REQ_SHIFT), 43 KM_GET_SUPPORTED_IMPORT_FORMATS = (13 << KEYMASTER_REQ_SHIFT), 44 KM_GET_SUPPORTED_EXPORT_FORMATS = (14 << KEYMASTER_REQ_SHIFT), 45 KM_GET_KEY_CHARACTERISTICS = (15 << KEYMASTER_REQ_SHIFT), 46 KM_ATTEST_KEY = (16 << KEYMASTER_REQ_SHIFT), 47 KM_UPGRADE_KEY = (17 << KEYMASTER_REQ_SHIFT), 48 KM_CONFIGURE = (18 << KEYMASTER_REQ_SHIFT), 49 KM_GET_HMAC_SHARING_PARAMETERS = (19 << KEYMASTER_REQ_SHIFT), 50 KM_COMPUTE_SHARED_HMAC = (20 << KEYMASTER_REQ_SHIFT), 51 KM_VERIFY_AUTHORIZATION = (21 << KEYMASTER_REQ_SHIFT), 52 KM_DELETE_KEY = (22 << KEYMASTER_REQ_SHIFT), 53 KM_DELETE_ALL_KEYS = (23 << KEYMASTER_REQ_SHIFT), 54 KM_DESTROY_ATTESTATION_IDS = (24 << KEYMASTER_REQ_SHIFT), 55 KM_IMPORT_WRAPPED_KEY = (25 << KEYMASTER_REQ_SHIFT), 56 }; 57 58 #ifdef __ANDROID__ 59 60 /** 61 * keymaster_message - Serial header for communicating with KM server 62 * @cmd: the command, one of keymaster_command. 63 * @payload: start of the serialized command specific payload 64 */ 65 struct keymaster_message { 66 uint32_t cmd; 67 uint8_t payload[0]; 68 }; 69 70 #endif 71