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 <utils/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, 49 hw_device_t** device) { 50 if (strcmp(name, KEYSTORE_KEYMASTER) != 0) 51 return -EINVAL; 52 53 Unique_keymaster_device_t dev(new keymaster_device_t); 54 if (dev.get() == NULL) 55 return -ENOMEM; 56 57 dev->common.tag = HARDWARE_DEVICE_TAG; 58 dev->common.version = 1; 59 dev->common.module = (struct hw_module_t*) module; 60 dev->common.close = openssl_close; 61 62 dev->flags = KEYMASTER_SOFTWARE_ONLY; 63 64 dev->generate_keypair = openssl_generate_keypair; 65 dev->import_keypair = openssl_import_keypair; 66 dev->get_keypair_public = openssl_get_keypair_public; 67 dev->delete_keypair = NULL; 68 dev->delete_all = NULL; 69 dev->sign_data = openssl_sign_data; 70 dev->verify_data = openssl_verify_data; 71 72 ERR_load_crypto_strings(); 73 ERR_load_BIO_strings(); 74 75 *device = reinterpret_cast<hw_device_t*>(dev.release()); 76 77 return 0; 78 } 79 80 static struct hw_module_methods_t keystore_module_methods = { 81 open: openssl_open, 82 }; 83 84 struct keystore_module HAL_MODULE_INFO_SYM 85 __attribute__ ((visibility ("default"))) = { 86 common: { 87 tag: HARDWARE_MODULE_TAG, 88 module_api_version: KEYMASTER_MODULE_API_VERSION_0_2, 89 hal_api_version: HARDWARE_HAL_API_VERSION, 90 id: KEYSTORE_HARDWARE_MODULE_ID, 91 name: "Keymaster OpenSSL HAL", 92 author: "The Android Open Source Project", 93 methods: &keystore_module_methods, 94 dso: 0, 95 reserved: {}, 96 }, 97 }; 98
