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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,
#include <memory>
#include "nss.h"
#include "pk11pub.h"
#include "pk11pqg.h"
#include "prerror.h"
#include "secoid.h"
#include "cpputil.h"
#include "nss_scoped_ptrs.h"
#include "gtest/gtest.h"
#include "databuffer.h"
#include "pk11_keygen.h"
namespace nss_test {
// This deleter deletes a set of objects, unlike the deleter on
// ScopedPK11GenericObject, which only deletes one.
struct PK11GenericObjectsDeleter {
void operator()(PK11GenericObject* objs) {
if (objs) {
PK11_DestroyGenericObjects(objs);
}
}
};
class Pk11KeyImportTestBase : public ::testing::Test {
public:
Pk11KeyImportTestBase() = default;
virtual ~Pk11KeyImportTestBase() = default;
void SetUp() override {
slot_.reset(PK11_GetInternalKeySlot());
ASSERT_TRUE(slot_);
static const uint8_t pw[] = "pw";
SECItem pwItem = {siBuffer, toUcharPtr(pw), sizeof(pw)};
password_.reset(SECITEM_DupItem(&pwItem));
}
void Test(const Pkcs11KeyPairGenerator& generator) {
// Generate a key and export it.
KeyType key_type = nullKey;
ScopedSECKEYEncryptedPrivateKeyInfo key_info;
ScopedSECItem public_value;
GenerateAndExport(generator, &key_type, &key_info, &public_value);
// Note: NSS is currently unable export wrapped DH keys, so this doesn't
// test those beyond generate and verify.
if (key_type == dhKey) {
return;
}
ASSERT_NE(nullptr, public_value);
ASSERT_NE(nullptr, key_info);
// Now import the encrypted key.
static const uint8_t nick[] = "nick";
SECItem nickname = {siBuffer, toUcharPtr(nick), sizeof(nick)};
SECKEYPrivateKey* priv_tmp;
SECStatus rv = PK11_ImportEncryptedPrivateKeyInfoAndReturnKey(
slot_.get(), key_info.get(), password_.get(), &nickname,
public_value.get(), PR_TRUE, PR_TRUE, key_type, 0, &priv_tmp, NULL);
ASSERT_EQ(SECSuccess, rv) << "PK11_ImportEncryptedPrivateKeyInfo failed "
<< PORT_ErrorToName(PORT_GetError());
ScopedSECKEYPrivateKey priv_key(priv_tmp);
ASSERT_NE(nullptr, priv_key);
CheckForPublicKey(priv_key, public_value.get());
}
private:
SECItem GetPublicComponent(ScopedSECKEYPublicKey& pub_key) {
SECItem null = {siBuffer, NULL, 0};
switch (SECKEY_GetPublicKeyType(pub_key.get())) {
case rsaKey:
case rsaPssKey:
case rsaOaepKey:
return pub_key->u.rsa.modulus;
case keaKey:
return pub_key->u.kea.publicValue;
case dsaKey:
return pub_key->u.dsa.publicValue;
case dhKey:
return pub_key->u.dh.publicValue;
case ecKey:
case edKey:
return pub_key->u.ec.publicValue;
case kyberKey:
return pub_key->u.kyber.publicValue;
case fortezzaKey: /* depricated */
case nullKey:
/* didn't use default here so we can catch new key types at compile time
*/
break;
}
return null;
}
void CheckForPublicKey(const ScopedSECKEYPrivateKey& priv_key,
const SECItem* expected_public) {
// Verify the public key exists.
StackSECItem priv_id;
KeyType type = SECKEY_GetPrivateKeyType(priv_key.get());
SECStatus rv = PK11_ReadRawAttribute(PK11_TypePrivKey, priv_key.get(),
CKA_ID, &priv_id);
ASSERT_EQ(SECSuccess, rv) << "Couldn't read CKA_ID from private key: "
<< PORT_ErrorToName(PORT_GetError());
CK_ATTRIBUTE_TYPE value_type = CKA_VALUE;
switch (type) {
case rsaKey:
value_type = CKA_MODULUS;
break;
case dhKey:
case dsaKey:
value_type = CKA_VALUE;
break;
case ecKey:
value_type = CKA_EC_POINT;
break;
default:
FAIL() << "unknown key type";
}
// Scan public key objects until we find one with the same CKA_ID as
// priv_key
std::unique_ptr<PK11GenericObject, PK11GenericObjectsDeleter> objs(
PK11_FindGenericObjects(slot_.get(), CKO_PUBLIC_KEY));
ASSERT_NE(nullptr, objs);
for (PK11GenericObject* obj = objs.get(); obj != nullptr;
obj = PK11_GetNextGenericObject(obj)) {
StackSECItem pub_id;
rv = PK11_ReadRawAttribute(PK11_TypeGeneric, obj, CKA_ID, &pub_id);
if (rv != SECSuccess) {
// Can't read CKA_ID from object.
continue;
}
if (!SECITEM_ItemsAreEqual(&priv_id, &pub_id)) {
// This isn't the object we're looking for.
continue;
}
StackSECItem token;
rv = PK11_ReadRawAttribute(PK11_TypeGeneric, obj, CKA_TOKEN, &token);
ASSERT_EQ(SECSuccess, rv);
ASSERT_EQ(1U, token.len);
ASSERT_NE(0, token.data[0]);
StackSECItem raw_value;
SECItem decoded_value;
rv = PK11_ReadRawAttribute(PK11_TypeGeneric, obj, value_type, &raw_value);
ASSERT_EQ(SECSuccess, rv);
SECItem value = raw_value;
// Decode the EC_POINT and check the output against expected.
ScopedPLArenaPool arena(PORT_NewArena(DER_DEFAULT_CHUNKSIZE));
ASSERT_TRUE(arena);
if (value_type == CKA_EC_POINT) {
// If this fails due to the noted inconsistency, we may need to
// check the whole raw_value, or remove a leading UNCOMPRESSED_POINT tag
rv = SEC_QuickDERDecodeItem(arena.get(), &decoded_value,
SEC_ASN1_GET(SEC_OctetStringTemplate),
&raw_value);
ASSERT_EQ(SECSuccess, rv);
value = decoded_value;
}
ASSERT_TRUE(SECITEM_ItemsAreEqual(expected_public, &value))
<< "expected: "
<< DataBuffer(expected_public->data, expected_public->len)
<< std::endl
<< "actual: " << DataBuffer(value.data, value.len) << std::endl;
// Finally, convert the private to public and ensure it matches.
ScopedSECKEYPublicKey pub_key(SECKEY_ConvertToPublicKey(priv_key.get()));
ASSERT_TRUE(pub_key);
SECItem converted_public = GetPublicComponent(pub_key);
ASSERT_TRUE(converted_public.len != 0);
ASSERT_TRUE(SECITEM_ItemsAreEqual(expected_public, &converted_public))
<< "expected: "
<< DataBuffer(expected_public->data, expected_public->len)
<< std::endl
<< "actual: "
<< DataBuffer(converted_public.data, converted_public.len)
<< std::endl;
}
}
void GenerateAndExport(const Pkcs11KeyPairGenerator& generator,
KeyType* key_type,
ScopedSECKEYEncryptedPrivateKeyInfo* key_info,
ScopedSECItem* public_value) {
ScopedSECKEYPrivateKey priv_key;
ScopedSECKEYPublicKey pub_key;
generator.GenerateKey(&priv_key, &pub_key);
ASSERT_TRUE(priv_key);
// Save the public value, which we will need on import */
SECItem* pub_val;
KeyType t = SECKEY_GetPublicKeyType(pub_key.get());
switch (t) {
case rsaKey:
pub_val = &pub_key->u.rsa.modulus;
break;
case dhKey:
pub_val = &pub_key->u.dh.publicValue;
break;
case dsaKey:
pub_val = &pub_key->u.dsa.publicValue;
break;
case ecKey:
pub_val = &pub_key->u.ec.publicValue;
break;
default:
FAIL() << "Unknown key type";
}
CheckForPublicKey(priv_key, pub_val);
*key_type = t;
// Note: NSS is currently unable export wrapped DH keys, so this doesn't
// test those beyond generate and verify.
if (t == dhKey) {
return;
}
public_value->reset(SECITEM_DupItem(pub_val));
// Wrap and export the key.
ScopedSECKEYEncryptedPrivateKeyInfo epki(PK11_ExportEncryptedPrivKeyInfo(
slot_.get(), SEC_OID_AES_256_CBC, password_.get(), priv_key.get(), 1,
nullptr));
ASSERT_NE(nullptr, epki) << "PK11_ExportEncryptedPrivKeyInfo failed: "
<< PORT_ErrorToName(PORT_GetError());
key_info->swap(epki);
}
ScopedPK11SlotInfo slot_;
ScopedSECItem password_;
};
class Pk11KeyImportTest
: public Pk11KeyImportTestBase,
public ::testing::WithParamInterface<CK_MECHANISM_TYPE> {
public:
Pk11KeyImportTest() = default;
virtual ~Pk11KeyImportTest() = default;
};
TEST_P(Pk11KeyImportTest, GenerateExportImport) {
Test(Pkcs11KeyPairGenerator(GetParam()));
}
INSTANTIATE_TEST_SUITE_P(Pk11KeyImportTest, Pk11KeyImportTest,
::testing::Values(CKM_RSA_PKCS_KEY_PAIR_GEN,
CKM_DSA_KEY_PAIR_GEN,
CKM_DH_PKCS_KEY_PAIR_GEN));
class Pk11KeyImportTestEC : public Pk11KeyImportTestBase,
public ::testing::WithParamInterface<SECOidTag> {
public:
Pk11KeyImportTestEC() = default;
virtual ~Pk11KeyImportTestEC() = default;
};
TEST_P(Pk11KeyImportTestEC, GenerateExportImport) {
Test(Pkcs11KeyPairGenerator(CKM_EC_KEY_PAIR_GEN, GetParam()));
}
INSTANTIATE_TEST_SUITE_P(Pk11KeyImportTestEC, Pk11KeyImportTestEC,
::testing::Values(SEC_OID_SECG_EC_SECP256R1,
SEC_OID_SECG_EC_SECP384R1,
SEC_OID_SECG_EC_SECP521R1,
SEC_OID_CURVE25519));
} // namespace nss_test