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 #define KEYMASTER_PORT "com.android.trusty.keymaster" 20 #define KEYMASTER_MAX_BUFFER_LENGTH 4096 21 22 // Commands 23 enum keymaster_command { 24 KEYMASTER_RESP_BIT = 1, 25 KEYMASTER_REQ_SHIFT = 1, 26 27 KM_GENERATE_KEY = (0 << KEYMASTER_REQ_SHIFT), 28 KM_BEGIN_OPERATION = (1 << KEYMASTER_REQ_SHIFT), 29 KM_UPDATE_OPERATION = (2 << KEYMASTER_REQ_SHIFT), 30 KM_FINISH_OPERATION = (3 << KEYMASTER_REQ_SHIFT), 31 KM_ABORT_OPERATION = (4 << KEYMASTER_REQ_SHIFT), 32 KM_IMPORT_KEY = (5 << KEYMASTER_REQ_SHIFT), 33 KM_EXPORT_KEY = (6 << KEYMASTER_REQ_SHIFT), 34 KM_GET_VERSION = (7 << KEYMASTER_REQ_SHIFT), 35 KM_ADD_RNG_ENTROPY = (8 << KEYMASTER_REQ_SHIFT), 36 KM_GET_SUPPORTED_ALGORITHMS = (9 << KEYMASTER_REQ_SHIFT), 37 KM_GET_SUPPORTED_BLOCK_MODES = (10 << KEYMASTER_REQ_SHIFT), 38 KM_GET_SUPPORTED_PADDING_MODES = (11 << KEYMASTER_REQ_SHIFT), 39 KM_GET_SUPPORTED_DIGESTS = (12 << KEYMASTER_REQ_SHIFT), 40 KM_GET_SUPPORTED_IMPORT_FORMATS = (13 << KEYMASTER_REQ_SHIFT), 41 KM_GET_SUPPORTED_EXPORT_FORMATS = (14 << KEYMASTER_REQ_SHIFT), 42 KM_GET_KEY_CHARACTERISTICS = (15 << KEYMASTER_REQ_SHIFT), 43 }; 44 45 #ifdef __ANDROID__ 46 47 /** 48 * keymaster_message - Serial header for communicating with KM server 49 * @cmd: the command, one of keymaster_command. 50 * @payload: start of the serialized command specific payload 51 */ 52 struct keymaster_message { 53 uint32_t cmd; 54 uint8_t payload[0]; 55 }; 56 57 #endif 58
