73 lines
2.8 KiB
C++
73 lines
2.8 KiB
C++
/*
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* Copyright 2015 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <keymaster/km_openssl/ecies_kem.h>
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#include <gtest/gtest.h>
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#include <openssl/evp.h>
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#include <hardware/keymaster_defs.h>
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#include <keymaster/android_keymaster_utils.h>
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#include <keymaster/km_openssl/nist_curve_key_exchange.h>
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#include "android_keymaster_test_utils.h"
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using std::string;
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namespace keymaster {
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namespace test {
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static const keymaster_ec_curve_t kEcCurves[] = {KM_EC_CURVE_P_224, KM_EC_CURVE_P_256,
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KM_EC_CURVE_P_384, KM_EC_CURVE_P_521};
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/**
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* TestConsistency just tests that the basic key encapsulation hold.
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*/
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TEST(EciesKem, TestConsistency) {
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static const uint32_t kKeyLen = 32;
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for (auto& curve : kEcCurves) {
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AuthorizationSet kem_description(AuthorizationSetBuilder()
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.Authorization(TAG_EC_CURVE, curve)
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.Authorization(TAG_KDF, KM_KDF_RFC5869_SHA256)
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.Authorization(TAG_ECIES_SINGLE_HASH_MODE)
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.Authorization(TAG_KEY_SIZE, kKeyLen));
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keymaster_error_t error;
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EciesKem* kem = new EciesKem(kem_description, &error);
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ASSERT_EQ(KM_ERROR_OK, error);
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NistCurveKeyExchange* key_exchange = NistCurveKeyExchange::GenerateKeyExchange(curve);
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Buffer peer_public_value;
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ASSERT_TRUE(key_exchange->public_value(&peer_public_value));
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Buffer output_clear_key;
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Buffer output_encrypted_key;
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ASSERT_TRUE(kem->Encrypt(peer_public_value, &output_clear_key, &output_encrypted_key));
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ASSERT_EQ(kKeyLen, output_clear_key.available_read());
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ASSERT_EQ(peer_public_value.available_read(), output_encrypted_key.available_read());
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Buffer decrypted_clear_key;
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ASSERT_TRUE(
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kem->Decrypt(key_exchange->private_key(), output_encrypted_key, &decrypted_clear_key));
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ASSERT_EQ(kKeyLen, decrypted_clear_key.available_read());
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EXPECT_EQ(0, memcmp(output_clear_key.peek_read(), decrypted_clear_key.peek_read(),
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output_clear_key.available_read()));
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}
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}
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} // namespace test
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} // namespace keymaster
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