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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
* You can obtain one at http://mozilla.org/MPL/2.0/. */
#include <memory>
#include "blapi.h"
#include "gtest/gtest.h"
#include "nss.h"
#include "nss_scoped_ptrs.h"
#include "pk11pub.h"
#include "secerr.h"
#include "sechash.h"
#include "util.h"
#include "testvectors/hkdf-sha1-vectors.h"
#include "testvectors/hkdf-sha256-vectors.h"
#include "testvectors/hkdf-sha384-vectors.h"
#include "testvectors/hkdf-sha512-vectors.h"
namespace nss_test {
enum class HkdfTestType {
legacy, /* CKM_NSS_HKDF_SHA... */
derive, /* CKM_HKDF_DERIVE, ikm as secret key, salt as data. */
deriveDataKey, /* CKM_HKDF_DERIVE, ikm as data, salt as data. */
saltDerive, /* CKM_HKDF_DERIVE, [ikm, salt] as secret key, salt as key. */
saltDeriveDataKey, /* CKM_HKDF_DERIVE, [ikm, salt] as data, salt as key. */
hkdfData /* CKM_HKDF_DATA, ikm as data, salt as data. */
};
static const HkdfTestType kHkdfTestTypesAll[] = {
HkdfTestType::legacy,
HkdfTestType::derive,
HkdfTestType::deriveDataKey,
HkdfTestType::saltDerive,
HkdfTestType::saltDeriveDataKey,
HkdfTestType::hkdfData,
};
class Pkcs11HkdfTest
: public ::testing::TestWithParam<
std::tuple<HkdfTestVector, HkdfTestType, CK_MECHANISM_TYPE>> {
protected:
CK_MECHANISM_TYPE Pk11MechToVendorMech(CK_MECHANISM_TYPE pk11_mech) {
switch (pk11_mech) {
case CKM_SHA_1:
return CKM_NSS_HKDF_SHA1;
case CKM_SHA256:
return CKM_NSS_HKDF_SHA256;
case CKM_SHA384:
return CKM_NSS_HKDF_SHA384;
case CKM_SHA512:
return CKM_NSS_HKDF_SHA512;
default:
ADD_FAILURE() << "Unknown hash mech";
return CKM_INVALID_MECHANISM;
}
}
ScopedPK11SymKey ImportKey(SECItem &ikm_item, bool import_as_data) {
ScopedPK11SlotInfo slot(PK11_GetInternalSlot());
if (!slot) {
ADD_FAILURE() << "Can't get slot";
return nullptr;
}
ScopedPK11SymKey ikm;
if (import_as_data) {
ikm.reset(PK11_ImportDataKey(slot.get(), CKM_HKDF_KEY_GEN,
PK11_OriginUnwrap, CKA_SIGN, &ikm_item,
nullptr));
} else {
ikm.reset(PK11_ImportSymKey(slot.get(), CKM_GENERIC_SECRET_KEY_GEN,
PK11_OriginUnwrap, CKA_SIGN, &ikm_item,
nullptr));
}
return ikm;
}
void RunWycheproofTest(const HkdfTestVector &vec, HkdfTestType test_type,
CK_MECHANISM_TYPE hash_mech) {
std::string msg = "Test #" + std::to_string(vec.id) + " failed";
std::vector<uint8_t> vec_ikm = hex_string_to_bytes(vec.ikm);
std::vector<uint8_t> vec_okm = hex_string_to_bytes(vec.okm);
std::vector<uint8_t> vec_info = hex_string_to_bytes(vec.info);
std::vector<uint8_t> vec_salt = hex_string_to_bytes(vec.salt);
SECItem ikm_item = {siBuffer, vec_ikm.data(),
static_cast<unsigned int>(vec_ikm.size())};
SECItem okm_item = {siBuffer, vec_okm.data(),
static_cast<unsigned int>(vec_okm.size())};
SECItem salt_item = {siBuffer, vec_salt.data(),
static_cast<unsigned int>(vec_salt.size())};
CK_MECHANISM_TYPE derive_mech = CKM_HKDF_DERIVE;
ScopedPK11SymKey salt_key = nullptr;
ScopedPK11SymKey ikm = nullptr;
// Legacy vendor mech params
CK_NSS_HKDFParams nss_hkdf_params = {
true, vec_salt.data(), static_cast<unsigned int>(vec_salt.size()),
true, vec_info.data(), static_cast<unsigned int>(vec_info.size())};
// PKCS #11 v3.0
CK_HKDF_PARAMS hkdf_params = {
true,
true,
hash_mech,
vec_salt.size() ? CKF_HKDF_SALT_DATA : CKF_HKDF_SALT_NULL,
vec_salt.size() ? vec_salt.data() : nullptr,
static_cast<unsigned int>(vec_salt.size()),
CK_INVALID_HANDLE,
vec_info.data(),
static_cast<unsigned int>(vec_info.size())};
SECItem params_item = {siBuffer, (unsigned char *)&hkdf_params,
sizeof(hkdf_params)};
switch (test_type) {
case HkdfTestType::legacy:
derive_mech = Pk11MechToVendorMech(hash_mech);
params_item.data = (uint8_t *)&nss_hkdf_params;
params_item.len = sizeof(nss_hkdf_params);
ikm = ImportKey(ikm_item, false);
break;
case HkdfTestType::derive:
ikm = ImportKey(ikm_item, false);
break;
case HkdfTestType::deriveDataKey:
ikm = ImportKey(ikm_item, true);
break;
case HkdfTestType::saltDerive:
ikm = ImportKey(ikm_item, false);
salt_key = ImportKey(salt_item, false);
break;
case HkdfTestType::saltDeriveDataKey:
ikm = ImportKey(ikm_item, true);
salt_key = ImportKey(salt_item, true);
break;
case HkdfTestType::hkdfData:
derive_mech = CKM_HKDF_DATA;
ikm = ImportKey(ikm_item, true);
break;
default:
ADD_FAILURE() << msg;
return;
}
ASSERT_NE(nullptr, ikm) << msg;
if (test_type == HkdfTestType::saltDerive ||
test_type == HkdfTestType::saltDeriveDataKey) {
ASSERT_NE(nullptr, salt_key) << msg;
hkdf_params.ulSaltType = CKF_HKDF_SALT_KEY;
hkdf_params.ulSaltLen = 0;
hkdf_params.pSalt = NULL;
hkdf_params.hSaltKey = PK11_GetSymKeyHandle(salt_key.get());
}
ScopedPK11SymKey okm = ScopedPK11SymKey(
PK11_Derive(ikm.get(), derive_mech, ¶ms_item,
CKM_GENERIC_SECRET_KEY_GEN, CKA_DERIVE, vec.size));
if (vec.valid) {
ASSERT_NE(nullptr, okm.get()) << msg;
ASSERT_EQ(SECSuccess, PK11_ExtractKeyValue(okm.get())) << msg;
ASSERT_EQ(0, SECITEM_CompareItem(&okm_item, PK11_GetKeyData(okm.get())))
<< msg;
} else {
ASSERT_EQ(nullptr, okm.get()) << msg;
}
}
};
TEST_P(Pkcs11HkdfTest, WycheproofVectors) {
RunWycheproofTest(std::get<0>(GetParam()), std::get<1>(GetParam()),
std::get<2>(GetParam()));
}
INSTANTIATE_TEST_CASE_P(
HkdfSha1, Pkcs11HkdfTest,
::testing::Combine(::testing::ValuesIn(kHkdfSha1WycheproofVectors),
::testing::ValuesIn(kHkdfTestTypesAll),
::testing::Values(CKM_SHA_1)));
INSTANTIATE_TEST_CASE_P(
HkdfSha256, Pkcs11HkdfTest,
::testing::Combine(::testing::ValuesIn(kHkdfSha256WycheproofVectors),
::testing::ValuesIn(kHkdfTestTypesAll),
::testing::Values(CKM_SHA256)));
INSTANTIATE_TEST_CASE_P(
HkdfSha384, Pkcs11HkdfTest,
::testing::Combine(::testing::ValuesIn(kHkdfSha384WycheproofVectors),
::testing::ValuesIn(kHkdfTestTypesAll),
::testing::Values(CKM_SHA384)));
INSTANTIATE_TEST_CASE_P(
HkdfSha512, Pkcs11HkdfTest,
::testing::Combine(::testing::ValuesIn(kHkdfSha512WycheproofVectors),
::testing::ValuesIn(kHkdfTestTypesAll),
::testing::Values(CKM_SHA512)));
} // namespace nss_test
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