Max Bires | d6d8952 | 2018-02-23 10:53:10 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2018 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 | #define LOG_TAG "KeystoreOperation" |
| 17 | |
| 18 | #include "key_proto_handler.h" |
| 19 | |
| 20 | #include <android/os/DropBoxManager.h> |
| 21 | #include <google/protobuf/message_lite.h> |
| 22 | #include <keymasterV4_0/Keymaster.h> |
| 23 | #include <keystore/keymaster_types.h> |
| 24 | #include <utils/String16.h> |
Hans Boehm | b3cc80d | 2018-05-08 15:19:14 -0700 | [diff] [blame] | 25 | #include <utils/StrongPointer.h> |
Max Bires | d6d8952 | 2018-02-23 10:53:10 -0800 | [diff] [blame] | 26 | |
| 27 | #include "key_config.pb.h" |
| 28 | |
| 29 | namespace keystore { |
| 30 | |
| 31 | void checkEnforcedCharacteristics(const hidl_vec<KeyParameter>& keyParams, KeyConfig* keyConfig) { |
| 32 | for (auto& keyParam : keyParams) { |
| 33 | switch (keyParam.tag) { |
| 34 | case Tag::PURPOSE: |
| 35 | keyConfig->add_purpose(toString(accessTagValue(TAG_PURPOSE, keyParam))); |
| 36 | break; |
| 37 | case Tag::ALGORITHM: |
| 38 | keyConfig->set_algorithm(toString(accessTagValue(TAG_ALGORITHM, keyParam))); |
| 39 | break; |
| 40 | case Tag::KEY_SIZE: |
| 41 | keyConfig->set_key_size(accessTagValue(TAG_KEY_SIZE, keyParam)); |
| 42 | break; |
| 43 | case Tag::BLOCK_MODE: |
| 44 | keyConfig->add_block_mode(toString(accessTagValue(TAG_BLOCK_MODE, keyParam))); |
| 45 | break; |
| 46 | case Tag::PADDING: |
| 47 | keyConfig->add_padding(toString(accessTagValue(TAG_PADDING, keyParam))); |
| 48 | break; |
| 49 | case Tag::DIGEST: |
| 50 | keyConfig->add_digest(toString(accessTagValue(TAG_DIGEST, keyParam))); |
| 51 | break; |
| 52 | case Tag::EC_CURVE: |
| 53 | keyConfig->set_ec_curve(toString(accessTagValue(TAG_EC_CURVE, keyParam))); |
| 54 | break; |
| 55 | case Tag::AUTH_TIMEOUT: |
| 56 | keyConfig->set_user_auth_key_timeout(accessTagValue(TAG_AUTH_TIMEOUT, keyParam)); |
| 57 | break; |
| 58 | case Tag::ORIGIN: |
| 59 | keyConfig->set_origin(toString(accessTagValue(TAG_ORIGIN, keyParam))); |
| 60 | break; |
| 61 | case Tag::BLOB_USAGE_REQUIREMENTS: |
| 62 | keyConfig->set_key_blob_usage_reqs( |
| 63 | toString(accessTagValue(TAG_BLOB_USAGE_REQUIREMENTS, keyParam))); |
| 64 | break; |
| 65 | case Tag::USER_AUTH_TYPE: |
| 66 | keyConfig->set_user_auth_type(toString(accessTagValue(TAG_USER_AUTH_TYPE, keyParam))); |
| 67 | break; |
| 68 | default: |
| 69 | break; |
| 70 | } |
| 71 | } |
| 72 | } |
| 73 | |
| 74 | void uploadKeyCharacteristicsAsProto(const hidl_vec<KeyParameter>& keyParams, |
| 75 | bool wasCreationSuccessful) { |
| 76 | KeyConfig keyConfig; |
| 77 | checkEnforcedCharacteristics(keyParams, &keyConfig); |
Hans Boehm | b3cc80d | 2018-05-08 15:19:14 -0700 | [diff] [blame] | 78 | android::sp<android::os::DropBoxManager> dropbox(new android::os::DropBoxManager()); |
Max Bires | d6d8952 | 2018-02-23 10:53:10 -0800 | [diff] [blame] | 79 | keyConfig.set_was_creation_successful(wasCreationSuccessful); |
| 80 | |
| 81 | size_t size = keyConfig.ByteSize(); |
| 82 | auto data = std::make_unique<uint8_t[]>(size); |
| 83 | keyConfig.SerializeWithCachedSizesToArray(data.get()); |
| 84 | dropbox->addData(android::String16("keymaster"), data.get(), size, 0); |
| 85 | } |
| 86 | |
| 87 | } // namespace keystore |