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/*
* Copyright 2016 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <fstream>
#include <gtest/gtest.h>
#include <keymaster/keymaster_context.h>
#include "android_keymaster_test_utils.h"
#include "attestation_record.h"
#include <keymaster/keymaster_context.h>
namespace keymaster {
namespace test {
class TestContext : public KeymasterContext {
public:
keymaster_security_level_t GetSecurityLevel() const override {
return KM_SECURITY_LEVEL_SOFTWARE;
}
keymaster_error_t SetSystemVersion(uint32_t /* os_version */,
uint32_t /* os_patchlevel */) override {
return KM_ERROR_UNIMPLEMENTED;
}
void GetSystemVersion(uint32_t* os_version, uint32_t* os_patchlevel) const override {
*os_version = 0;
*os_patchlevel = 0;
}
KeyFactory* GetKeyFactory(keymaster_algorithm_t /* algorithm */) const override {
return nullptr;
}
OperationFactory* GetOperationFactory(keymaster_algorithm_t /* algorithm */,
keymaster_purpose_t /* purpose */) const override {
return nullptr;
}
keymaster_algorithm_t* GetSupportedAlgorithms(size_t* /* algorithms_count */) const override {
return nullptr;
}
keymaster_error_t CreateKeyBlob(const AuthorizationSet& /* key_description */,
keymaster_key_origin_t /* origin */,
const KeymasterKeyBlob& /* key_material */,
KeymasterKeyBlob* /* blob */,
AuthorizationSet* /* hw_enforced */,
AuthorizationSet* /* sw_enforced */) const override {
return KM_ERROR_UNIMPLEMENTED;
}
keymaster_error_t UpgradeKeyBlob(const KeymasterKeyBlob& /* key_to_upgrade */,
const AuthorizationSet& /* upgrade_params */,
KeymasterKeyBlob* /* upgraded_key */) const override {
return KM_ERROR_UNIMPLEMENTED;
}
keymaster_error_t ParseKeyBlob(const KeymasterKeyBlob& /* blob */,
const AuthorizationSet& /* additional_params */,
KeymasterKeyBlob* /* key_material */,
AuthorizationSet* /* hw_enforced */,
AuthorizationSet* /* sw_enforced */) const override {
return KM_ERROR_UNIMPLEMENTED;
}
keymaster_error_t AddRngEntropy(const uint8_t* /* buf */, size_t /* length */) const override {
return KM_ERROR_UNIMPLEMENTED;
}
keymaster_error_t GenerateRandom(uint8_t* /* buf */, size_t /* length */) const override {
return KM_ERROR_UNIMPLEMENTED;
}
KeymasterEnforcement* enforcement_policy() { return nullptr; }
EVP_PKEY* AttestationKey(keymaster_algorithm_t /* algorithm */,
keymaster_error_t* /* error */) const override {
return nullptr;
}
keymaster_cert_chain_t* AttestationChain(keymaster_algorithm_t /* algorithm */,
keymaster_error_t* /* error */) const override {
return nullptr;
}
keymaster_error_t GenerateUniqueId(uint64_t /* creation_date_time */,
const keymaster_blob_t& /* application_id */,
bool /* reset_since_rotation */, Buffer* unique_id) const {
// Finally, the reason for defining this class:
unique_id->Reinitialize("foo", 3);
return KM_ERROR_OK;
}
};
TEST(AttestTest, Simple) {
AuthorizationSet hw_set(AuthorizationSetBuilder()
.RsaSigningKey(512, 3)
.Digest(KM_DIGEST_SHA_2_256)
.Digest(KM_DIGEST_SHA_2_384)
.Authorization(TAG_OS_VERSION, 60000)
.Authorization(TAG_OS_PATCHLEVEL, 201512)
.Authorization(TAG_APPLICATION_ID, "bar", 3));
AuthorizationSet sw_set(AuthorizationSetBuilder().Authorization(TAG_ACTIVE_DATETIME, 10));
UniquePtr<uint8_t[]> asn1;
size_t asn1_len;
AuthorizationSet attest_params(
AuthorizationSetBuilder().Authorization(TAG_ATTESTATION_CHALLENGE, "hello", 5));
EXPECT_EQ(KM_ERROR_OK, build_attestation_record(attest_params, sw_set, hw_set, TestContext(),
&asn1, &asn1_len));
EXPECT_GT(asn1_len, 0U);
std::ofstream output("attest.der",
std::ofstream::out | std::ofstream::binary | std::ofstream::trunc);
if (output)
output.write(reinterpret_cast<const char*>(asn1.get()), asn1_len);
output.close();
AuthorizationSet parsed_hw_set;
AuthorizationSet parsed_sw_set;
uint32_t attestation_version;
uint32_t keymaster_version;
keymaster_security_level_t attestation_security_level;
keymaster_security_level_t keymaster_security_level;
keymaster_blob_t attestation_challenge = {};
keymaster_blob_t unique_id = {};
EXPECT_EQ(KM_ERROR_OK,
parse_attestation_record(asn1.get(), asn1_len, &attestation_version,
&attestation_security_level, &keymaster_version,
&keymaster_security_level, &attestation_challenge,
&parsed_sw_set, &parsed_hw_set, &unique_id));
hw_set.Sort();
sw_set.Sort();
parsed_hw_set.Sort();
parsed_sw_set.Sort();
EXPECT_EQ(hw_set, parsed_hw_set);
EXPECT_EQ(sw_set, parsed_sw_set);
}
} // namespace test
} // namespace keymaster
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