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 #include <errno.h> 17 #include <string.h> 18 #include <stdint.h> 19 20 #include <keymaster/softkeymaster.h> 21 22 #include <keystore/keystore.h> 23 24 #include <hardware/hardware.h> 25 #include <hardware/keymaster.h> 26 27 #include <openssl/err.h> 28 29 #include <UniquePtr.h> 30 31 // For debugging 32 // #define LOG_NDEBUG 0 33 34 #define LOG_TAG "OpenSSLKeyMaster" 35 #include <cutils/log.h> 36 37 typedef UniquePtr<keymaster_device_t> Unique_keymaster_device_t; 38 39 /* Close an opened OpenSSL instance */ 40 static int openssl_close(hw_device_t* dev) { 41 delete dev; 42 return 0; 43 } 44 45 /* 46 * Generic device handling 47 */ 48 static int openssl_open(const hw_module_t* module, const char* name, hw_device_t** device) { 49 if (strcmp(name, KEYSTORE_KEYMASTER) != 0) 50 return -EINVAL; 51 52 Unique_keymaster_device_t dev(new keymaster_device_t); 53 if (dev.get() == NULL) 54 return -ENOMEM; 55 56 dev->common.tag = HARDWARE_DEVICE_TAG; 57 dev->common.version = 1; 58 dev->common.module = (struct hw_module_t*)module; 59 dev->common.close = openssl_close; 60 61 dev->flags = KEYMASTER_SOFTWARE_ONLY; 62 63 dev->generate_keypair = openssl_generate_keypair; 64 dev->import_keypair = openssl_import_keypair; 65 dev->get_keypair_public = openssl_get_keypair_public; 66 dev->delete_keypair = NULL; 67 dev->delete_all = NULL; 68 dev->sign_data = openssl_sign_data; 69 dev->verify_data = openssl_verify_data; 70 71 ERR_load_crypto_strings(); 72 ERR_load_BIO_strings(); 73 74 *device = reinterpret_cast<hw_device_t*>(dev.release()); 75 76 return 0; 77 } 78 79 static struct hw_module_methods_t keystore_module_methods = { 80 .open = openssl_open, 81 }; 82 83 struct keystore_module HAL_MODULE_INFO_SYM __attribute__((visibility("default"))) = { 84 .common = { 85 .tag = HARDWARE_MODULE_TAG, 86 .module_api_version = KEYMASTER_MODULE_API_VERSION_0_2, 87 .hal_api_version = HARDWARE_HAL_API_VERSION, 88 .id = KEYSTORE_HARDWARE_MODULE_ID, 89 .name = "Keymaster OpenSSL HAL", 90 .author = "The Android Open Source Project", 91 .methods = &keystore_module_methods, 92 .dso = 0, 93 .reserved = {}, 94 }, 95 }; 96
