blob: f653dc06e506bb5e1835c1c2a448cfed11a26708
| 1 | /* |
| 2 | * Copyright 2015 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 "ecies_kem.h" |
| 18 | |
| 19 | #include <gtest/gtest.h> |
| 20 | #include <openssl/evp.h> |
| 21 | |
| 22 | #include <hardware/keymaster_defs.h> |
| 23 | #include <keymaster/android_keymaster_utils.h> |
| 24 | |
| 25 | #include "android_keymaster_test_utils.h" |
| 26 | #include "nist_curve_key_exchange.h" |
| 27 | |
| 28 | using std::string; |
| 29 | |
| 30 | namespace keymaster { |
| 31 | namespace test { |
| 32 | |
| 33 | StdoutLogger logger; |
| 34 | |
| 35 | static const keymaster_ec_curve_t kEcCurves[] = {KM_EC_CURVE_P_224, KM_EC_CURVE_P_256, |
| 36 | KM_EC_CURVE_P_384, KM_EC_CURVE_P_521}; |
| 37 | |
| 38 | /** |
| 39 | * TestConsistency just tests that the basic key encapsulation hold. |
| 40 | */ |
| 41 | TEST(EciesKem, TestConsistency) { |
| 42 | static const uint32_t kKeyLen = 32; |
| 43 | for (auto& curve : kEcCurves) { |
| 44 | AuthorizationSet kem_description(AuthorizationSetBuilder() |
| 45 | .Authorization(TAG_EC_CURVE, curve) |
| 46 | .Authorization(TAG_KDF, KM_KDF_RFC5869_SHA256) |
| 47 | .Authorization(TAG_ECIES_SINGLE_HASH_MODE) |
| 48 | .Authorization(TAG_KEY_SIZE, kKeyLen)); |
| 49 | keymaster_error_t error; |
| 50 | EciesKem* kem = new EciesKem(kem_description, &error); |
| 51 | ASSERT_EQ(KM_ERROR_OK, error); |
| 52 | |
| 53 | NistCurveKeyExchange* key_exchange = NistCurveKeyExchange::GenerateKeyExchange(curve); |
| 54 | Buffer peer_public_value; |
| 55 | ASSERT_TRUE(key_exchange->public_value(&peer_public_value)); |
| 56 | |
| 57 | Buffer output_clear_key; |
| 58 | Buffer output_encrypted_key; |
| 59 | ASSERT_TRUE(kem->Encrypt(peer_public_value, &output_clear_key, &output_encrypted_key)); |
| 60 | ASSERT_EQ(kKeyLen, output_clear_key.available_read()); |
| 61 | ASSERT_EQ(peer_public_value.available_read(), output_encrypted_key.available_read()); |
| 62 | |
| 63 | Buffer decrypted_clear_key; |
| 64 | ASSERT_TRUE( |
| 65 | kem->Decrypt(key_exchange->private_key(), output_encrypted_key, &decrypted_clear_key)); |
| 66 | ASSERT_EQ(kKeyLen, decrypted_clear_key.available_read()); |
| 67 | EXPECT_EQ(0, memcmp(output_clear_key.peek_read(), decrypted_clear_key.peek_read(), |
| 68 | output_clear_key.available_read())); |
| 69 | } |
| 70 | } |
| 71 | |
| 72 | } // namespace test |
| 73 | } // namespace keymaster |
| 74 |