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key.cc
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key.cc
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// Copyright 2013-2014 Google Inc. All rights reserved.
//
// 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.
//
// PKCS#11 s11.14: Key management functions
// C_GenerateKey
// C_GenerateKeyPair
// C_WrapKey
// C_UnwrapKey
// C_DeriveKey
#include "pkcs11test.h"
using namespace std; // So sue me
namespace pkcs11 {
namespace test {
TEST_F(ReadOnlySessionTest, GenerateKeyInvalid) {
CK_MECHANISM mechanism = {CKM_DES_KEY_GEN, NULL_PTR, 0};
CK_ATTRIBUTE attrs[] = {
{CKA_LABEL, (CK_VOID_PTR)g_label, g_label_len},
{CKA_ENCRYPT, (CK_VOID_PTR)&g_ck_true, sizeof(CK_BBOOL)},
{CKA_DECRYPT, (CK_VOID_PTR)&g_ck_true, sizeof(CK_BBOOL)},
};
CK_OBJECT_HANDLE key;
EXPECT_CKR(CKR_SESSION_HANDLE_INVALID,
g_fns->C_GenerateKey(INVALID_SESSION_HANDLE, &mechanism, attrs, 3, &key));
CK_RV rv = g_fns->C_GenerateKey(session_, NULL_PTR, attrs, 3, &key);
EXPECT_TRUE(rv == CKR_ARGUMENTS_BAD || rv == CKR_MECHANISM_INVALID) << " rv=" << CK_RV_(rv);
EXPECT_CKR(CKR_ARGUMENTS_BAD,
g_fns->C_GenerateKey(session_, &mechanism, NULL_PTR, 3, &key));
EXPECT_CKR(CKR_ARGUMENTS_BAD,
g_fns->C_GenerateKey(session_, &mechanism, attrs, 3, NULL_PTR));
}
TEST_F(ReadOnlySessionTest, GenerateKeyPairInvalid) {
CK_MECHANISM mechanism = {CKM_RSA_PKCS_KEY_PAIR_GEN, NULL_PTR, 0};
CK_ULONG modulus_bits = 1024;
CK_BYTE public_exponent_value[] = {0x1, 0x0, 0x1}; // 65537=0x010001
CK_ATTRIBUTE public_attrs[] = {
{CKA_LABEL, (CK_VOID_PTR)g_label, g_label_len},
{CKA_MODULUS_BITS, &modulus_bits, sizeof(modulus_bits)},
{CKA_PUBLIC_EXPONENT, public_exponent_value, sizeof(public_exponent_value)},
{CKA_ENCRYPT, (CK_VOID_PTR)&g_ck_true, sizeof(CK_BBOOL)},
};
CK_ATTRIBUTE private_attrs[] = {
{CKA_LABEL, (CK_VOID_PTR)g_label, g_label_len},
{CKA_DECRYPT, (CK_VOID_PTR)&g_ck_true, sizeof(CK_BBOOL)},
};
CK_OBJECT_HANDLE public_key;
CK_OBJECT_HANDLE private_key;
EXPECT_CKR(CKR_SESSION_HANDLE_INVALID,
g_fns->C_GenerateKeyPair(INVALID_SESSION_HANDLE, &mechanism,
public_attrs, 4,
private_attrs, 2,
&public_key, &private_key));
CK_RV rv = g_fns->C_GenerateKeyPair(session_, NULL_PTR,
public_attrs, 4,
private_attrs, 2,
&public_key, &private_key);
EXPECT_TRUE(rv == CKR_ARGUMENTS_BAD || rv == CKR_MECHANISM_INVALID) << " rv=" << CK_RV_(rv);
EXPECT_CKR(CKR_ARGUMENTS_BAD,
g_fns->C_GenerateKeyPair(session_, &mechanism,
NULL_PTR, 4,
private_attrs, 2,
&public_key, &private_key));
EXPECT_CKR(CKR_ARGUMENTS_BAD,
g_fns->C_GenerateKeyPair(session_, &mechanism,
public_attrs, 4,
NULL_PTR, 2,
&public_key, &private_key));
EXPECT_CKR(CKR_ARGUMENTS_BAD,
g_fns->C_GenerateKeyPair(session_, &mechanism,
public_attrs, 4,
private_attrs, 2,
NULL_PTR, &private_key));
EXPECT_CKR(CKR_ARGUMENTS_BAD,
g_fns->C_GenerateKeyPair(session_, &mechanism,
public_attrs, 4,
private_attrs, 2,
&public_key, NULL_PTR));
}
TEST_F(ReadOnlySessionTest, WrapUnwrap) {
ObjectAttributes k1_attrs = ObjectAttributes();
CK_ATTRIBUTE insensitive_attr = {CKA_SENSITIVE, &g_ck_false, sizeof(g_ck_false)};
k1_attrs.push_back(insensitive_attr);
SecretKey k1(session_, k1_attrs);
vector<CK_ATTRIBUTE_TYPE> k2_attrs = {CKA_WRAP, CKA_UNWRAP, CKA_DECRYPT};
SecretKey k2(session_, k2_attrs);
// Use k2 to wrap k1.
CK_MECHANISM wrap_mechanism = {CKM_DES_ECB, NULL_PTR, 0};
CK_BYTE data[4096];
CK_ULONG data_len = sizeof(data);
CK_RV rv = g_fns->C_WrapKey(session_, &wrap_mechanism, k2.handle(), k1.handle(), data, &data_len);
if (rv == CKR_FUNCTION_NOT_SUPPORTED) {
TEST_SKIPPED("Key wrapping not supported");
return;
}
EXPECT_CKR_OK(rv);
// Use k2 to decrypt the result, giving contents of k1.
EXPECT_CKR_OK(g_fns->C_DecryptInit(session_, &wrap_mechanism, k2.handle()));
CK_BYTE key[4096];
CK_ULONG key_out_len = sizeof(key);
EXPECT_CKR_OK(g_fns->C_Decrypt(session_, data, data_len, key, &key_out_len));
CK_BYTE k1_value[2048];
CK_ATTRIBUTE get_attr = {CKA_VALUE, k1_value, sizeof(k1_value)};
EXPECT_CKR_OK(g_fns->C_GetAttributeValue(session_, k1.handle(), &get_attr, 1));
CK_ULONG k1_len = get_attr.ulValueLen;
EXPECT_EQ(k1_len, key_out_len);
EXPECT_EQ(hex_data(k1_value, k1_len), hex_data(key, key_out_len));
// Unwrap to generate a key object with the same value.
CK_OBJECT_HANDLE k3;
CK_OBJECT_CLASS key_class = CKO_SECRET_KEY;
CK_KEY_TYPE key_type = CKK_DES;
CK_ATTRIBUTE k3_attrs[] = {
{CKA_LABEL, (CK_VOID_PTR)g_label, g_label_len},
{CKA_CLASS, &key_class, sizeof(key_class)},
{CKA_KEY_TYPE, (CK_VOID_PTR)&key_type, sizeof(key_type)},
{CKA_ENCRYPT, (CK_VOID_PTR)&g_ck_true, sizeof(CK_BBOOL)},
{CKA_DECRYPT, (CK_VOID_PTR)&g_ck_true, sizeof(CK_BBOOL)},
};
EXPECT_CKR_OK(g_fns->C_UnwrapKey(session_, &wrap_mechanism, k2.handle(), data, data_len, k3_attrs, 5, &k3));
CK_BYTE k3_value[2048];
CK_ATTRIBUTE k3_get_attr = {CKA_VALUE, k3_value, sizeof(k3_value)};
EXPECT_CKR_OK(g_fns->C_GetAttributeValue(session_, k3, &k3_get_attr, 1));
CK_ULONG k3_len = get_attr.ulValueLen;
EXPECT_EQ(hex_data(k1_value, k1_len), hex_data(k3_value, k3_len));
g_fns->C_DestroyObject(session_, k3);
}
TEST_F(ReadOnlySessionTest, WrapInvalid) {
ObjectAttributes k1_attrs = ObjectAttributes();
CK_ATTRIBUTE insensitive_attr = {CKA_SENSITIVE, &g_ck_false, sizeof(g_ck_false)};
k1_attrs.push_back(insensitive_attr);
SecretKey k1(session_, k1_attrs);
vector<CK_ATTRIBUTE_TYPE> k2_attrs = {CKA_WRAP, CKA_UNWRAP, CKA_DECRYPT};
SecretKey k2(session_, k2_attrs);
// Use k2 to wrap k1.
CK_MECHANISM wrap_mechanism = {CKM_DES_ECB, NULL_PTR, 0};
CK_BYTE data[4096];
CK_ULONG data_len = sizeof(data);
CK_RV rv = g_fns->C_WrapKey(session_, &wrap_mechanism, k2.handle(), k1.handle(), data, &data_len);
if (rv == CKR_FUNCTION_NOT_SUPPORTED) {
TEST_SKIPPED("Key wrapping not supported");
return;
}
EXPECT_CKR_OK(rv);
data_len = sizeof(data);
EXPECT_CKR(CKR_SESSION_HANDLE_INVALID,
g_fns->C_WrapKey(INVALID_SESSION_HANDLE, &wrap_mechanism, k2.handle(), k1.handle(), data, &data_len));
rv = g_fns->C_WrapKey(session_, NULL_PTR, k2.handle(), k1.handle(), data, &data_len);
EXPECT_TRUE(rv == CKR_ARGUMENTS_BAD || rv == CKR_MECHANISM_INVALID) << " rv=" << CK_RV_(rv);
EXPECT_CKR(CKR_WRAPPING_KEY_HANDLE_INVALID,
g_fns->C_WrapKey(session_, &wrap_mechanism, INVALID_OBJECT_HANDLE, k1.handle(), data, &data_len));
EXPECT_CKR(CKR_KEY_HANDLE_INVALID,
g_fns->C_WrapKey(session_, &wrap_mechanism, k2.handle(), INVALID_OBJECT_HANDLE, data, &data_len));
EXPECT_CKR(CKR_ARGUMENTS_BAD,
g_fns->C_WrapKey(session_, &wrap_mechanism, k2.handle(), k1.handle(), data, NULL_PTR));
// Too-small output cases.
EXPECT_CKR_OK(g_fns->C_WrapKey(session_, &wrap_mechanism, k2.handle(), k1.handle(), NULL_PTR, &data_len));
data_len = 1;
EXPECT_CKR(CKR_BUFFER_TOO_SMALL,
g_fns->C_WrapKey(session_, &wrap_mechanism, k2.handle(), k1.handle(), data, &data_len));
}
TEST_F(ReadOnlySessionTest, UnwrapInvalid) {
ObjectAttributes k1_attrs = ObjectAttributes();
CK_ATTRIBUTE insensitive_attr = {CKA_SENSITIVE, &g_ck_false, sizeof(g_ck_false)};
k1_attrs.push_back(insensitive_attr);
SecretKey k1(session_, k1_attrs);
vector<CK_ATTRIBUTE_TYPE> k2_attrs = {CKA_WRAP, CKA_UNWRAP, CKA_DECRYPT};
SecretKey k2(session_, k2_attrs);
// Use k2 to wrap k1.
CK_MECHANISM wrap_mechanism = {CKM_DES_ECB, NULL_PTR, 0};
CK_BYTE data[4096];
CK_ULONG data_len = sizeof(data);
CK_RV rv = g_fns->C_WrapKey(session_, &wrap_mechanism, k2.handle(), k1.handle(), data, &data_len);
if (rv == CKR_FUNCTION_NOT_SUPPORTED) {
// Assume implementation is symmetric w.r.t. Wrap/Unwrap.
TEST_SKIPPED("Key wrapping not supported");
return;
}
EXPECT_CKR_OK(rv);
CK_OBJECT_HANDLE k3 = 0;
CK_OBJECT_CLASS key_class = CKO_SECRET_KEY;
CK_KEY_TYPE key_type = CKK_DES;
CK_ATTRIBUTE k3_attrs[] = {
{CKA_LABEL, (CK_VOID_PTR)g_label, g_label_len},
{CKA_CLASS, &key_class, sizeof(key_class)},
{CKA_KEY_TYPE, (CK_VOID_PTR)&key_type, sizeof(key_type)},
{CKA_ENCRYPT, (CK_VOID_PTR)&g_ck_true, sizeof(CK_BBOOL)},
{CKA_DECRYPT, (CK_VOID_PTR)&g_ck_true, sizeof(CK_BBOOL)},
};
EXPECT_CKR(CKR_SESSION_HANDLE_INVALID,
g_fns->C_UnwrapKey(INVALID_SESSION_HANDLE, &wrap_mechanism, k2.handle(), data, data_len, k3_attrs, 5, &k3));
rv = g_fns->C_UnwrapKey(session_, NULL_PTR, k2.handle(), data, data_len, k3_attrs, 5, &k3);
EXPECT_TRUE(rv == CKR_ARGUMENTS_BAD || rv == CKR_MECHANISM_INVALID) << " rv=" << CK_RV_(rv);
EXPECT_CKR(CKR_WRAPPING_KEY_HANDLE_INVALID,
g_fns->C_UnwrapKey(session_, &wrap_mechanism, NULL_PTR, data, data_len, k3_attrs, 5, &k3));
EXPECT_CKR(CKR_ARGUMENTS_BAD,
g_fns->C_UnwrapKey(session_, &wrap_mechanism, k2.handle(), NULL_PTR, data_len, k3_attrs, 5, &k3));
EXPECT_CKR(CKR_ARGUMENTS_BAD,
g_fns->C_UnwrapKey(session_, &wrap_mechanism, k2.handle(), data, data_len, NULL_PTR, 5, &k3));
EXPECT_CKR(CKR_ARGUMENTS_BAD,
g_fns->C_UnwrapKey(session_, &wrap_mechanism, k2.handle(), data, data_len, k3_attrs, 5, NULL_PTR));
g_fns->C_DestroyObject(session_, k3); // In case of accidental creation
}
} // namespace test
} // namespace pkcs11