Shawn Willden | 398c158 | 2015-05-28 00:04:06 -0600 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2014 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 | #include <keymaster/asymmetric_key_factory.h> |
| 18 | |
| 19 | #include <keymaster/android_keymaster_utils.h> |
| 20 | |
| 21 | #include "asymmetric_key.h" |
| 22 | #include "openssl_err.h" |
| 23 | #include "openssl_utils.h" |
| 24 | |
| 25 | namespace keymaster { |
| 26 | |
| 27 | static const keymaster_key_format_t supported_import_formats[] = {KM_KEY_FORMAT_PKCS8}; |
| 28 | const keymaster_key_format_t* |
| 29 | AsymmetricKeyFactory::SupportedImportFormats(size_t* format_count) const { |
| 30 | *format_count = array_length(supported_import_formats); |
| 31 | return supported_import_formats; |
| 32 | } |
| 33 | |
| 34 | static const keymaster_key_format_t supported_export_formats[] = {KM_KEY_FORMAT_X509}; |
| 35 | const keymaster_key_format_t* |
| 36 | AsymmetricKeyFactory::SupportedExportFormats(size_t* format_count) const { |
| 37 | *format_count = array_length(supported_export_formats); |
| 38 | return supported_export_formats; |
| 39 | } |
| 40 | |
| 41 | keymaster_error_t AsymmetricKeyFactory::LoadKey(const KeymasterKeyBlob& key_material, |
Shawn Willden | 2612fb5 | 2015-07-27 16:58:30 -0600 | [diff] [blame] | 42 | const AuthorizationSet& /* additional_params */, |
Shawn Willden | 398c158 | 2015-05-28 00:04:06 -0600 | [diff] [blame] | 43 | const AuthorizationSet& hw_enforced, |
| 44 | const AuthorizationSet& sw_enforced, |
| 45 | UniquePtr<Key>* key) const { |
| 46 | UniquePtr<AsymmetricKey> asymmetric_key; |
| 47 | keymaster_error_t error = CreateEmptyKey(hw_enforced, sw_enforced, &asymmetric_key); |
| 48 | if (error != KM_ERROR_OK) |
| 49 | return error; |
| 50 | |
| 51 | const uint8_t* tmp = key_material.key_material; |
| 52 | EVP_PKEY* pkey = |
| 53 | d2i_PrivateKey(evp_key_type(), NULL /* pkey */, &tmp, key_material.key_material_size); |
| 54 | if (!pkey) |
| 55 | return TranslateLastOpenSslError(); |
| 56 | UniquePtr<EVP_PKEY, EVP_PKEY_Delete> pkey_deleter(pkey); |
| 57 | |
| 58 | if (!asymmetric_key->EvpToInternal(pkey)) |
| 59 | error = TranslateLastOpenSslError(); |
| 60 | else |
| 61 | key->reset(asymmetric_key.release()); |
| 62 | |
| 63 | return error; |
| 64 | } |
| 65 | |
| 66 | } // namespace keymaster |