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hmac.cc
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hmac.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 s11.11: Signing and MACing functions
// C_SignInit
// C_Sign
// C_SignUpdate
// C_SignFinal
// C_SignRecoverInit
// C_SignRecover
// PKCS#11 s11.12: Functions for verifying signatures and MACs
// C_VerifyInit
// C_Verify
// C_VerifyUpdate
// C_VerifyFinal
// C_VerifyRecoverInit
// C_VerifyRecover
#include "pkcs11test.h"
#include <map>
#include <string>
using namespace std; // So sue me
namespace pkcs11 {
namespace test {
namespace {
struct TestData {
string key; // Hex
string data; // Hex
string hash; // Hex
};
map<string, vector<TestData> > kTestVectors = {
// Test vectors from RFC 2202.
{"MD5-HMAC",
{{"0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b", "4869205468657265",
"9294727a3638bb1c13f48ef8158bfc9d"},
{"4a656665", "7768617420646f2079612077616e7420666f72206e6f7468696e673f",
"750c783e6ab0b503eaa86e310a5db738"}}},
{"SHA1-HMAC",
{{"0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b", "4869205468657265",
"b617318655057264e28bc0b6fb378c8ef146be00"},
{"4a656665", "7768617420646f2079612077616e7420666f72206e6f7468696e673f",
"effcdf6ae5eb2fa2d27416d5f184df9c259a7c79"}}},
// Test vectors from RFC 4231.
{"SHA256-HMAC",
{{"0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b", "4869205468657265",
"b0344c61d8db38535ca8afceaf0bf12b881dc200c9833da726e9376c2e32cff7"},
{"4a656665", "7768617420646f2079612077616e7420666f72206e6f7468696e673f",
"5bdcc146bf60754e6a042426089575c75a003f089d2739839dec58b964ec3843"},
{"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", "54657374205573696e67204c6172676572205468616e20426c6f636b2d53697a65204b6579202d2048617368204b6579204669727374",
"60e431591ee0b67f0d8a26aacbf5b77f8e0bc6213728c5140546040f0ee37f54"}, }},
{"SHA384-HMAC",
{{"0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b", "4869205468657265",
"afd03944d84895626b0825f4ab46907f15f9dadbe4101ec682aa034c7cebc59cfaea9ea9076ede7f4af152e8b2fa9cb6"},
{"4a656665", "7768617420646f2079612077616e7420666f72206e6f7468696e673f",
"af45d2e376484031617f78d2b58a6b1b9c7ef464f5a01b47e42ec3736322445e8e2240ca5e69e2c78b3239ecfab21649"},
{"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", "54657374205573696e67204c6172676572205468616e20426c6f636b2d53697a65204b6579202d2048617368204b6579204669727374",
"4ece084485813e9088d2c63a041bc5b44f9ef1012a2b588f3cd11f05033ac4c60c2ef6ab4030fe8296248df163f44952"}, }},
{"SHA512-HMAC",
{{"0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b", "4869205468657265",
"87aa7cdea5ef619d4ff0b4241a1d6cb02379f4e2ce4ec2787ad0b30545e17cdedaa833b7d6b8a702038b274eaea3f4e4be9d914eeb61f1702e696c203a126854"},
{"4a656665", "7768617420646f2079612077616e7420666f72206e6f7468696e673f",
"164b7a7bfcf819e2e395fbe73b56e0a387bd64222e831fd610270cd7ea2505549758bf75c05a994a6d034f65f8f0e6fdcaeab1a34d4a6b4b636e070a38bce737"},
{"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", "54657374205573696e67204c6172676572205468616e20426c6f636b2d53697a65204b6579202d2048617368204b6579204669727374",
"80b24263c7c1a3ebb71493c1dd7be8b49b46d1f41b4aeec1121b013783f8f3526b56d037e05f2598bd0fd2215d6a1e5295e64f73f63f0aec8b915a985d786598"}, }},
};
} // namespace
class HmacTest : public ReadOnlySessionTest,
public ::testing::WithParamInterface<string> {
public:
HmacTest()
: attrs_({CKA_SIGN, CKA_VERIFY}),
info_(kHmacInfo[GetParam()]),
keylen_(64 + (std::rand() % 64)),
key_data_(randmalloc(keylen_)),
key_(INVALID_OBJECT_HANDLE),
datalen_(std::rand() % 1024),
data_(randmalloc(datalen_)),
mechanism_({info_.hmac, NULL_PTR, 0}) {
// Implementations generally only support HMAC with a GENERIC_SECRET key.
CK_OBJECT_CLASS key_class = CKO_SECRET_KEY;
CK_KEY_TYPE key_type = CKK_GENERIC_SECRET;
vector<CK_ATTRIBUTE> attrs = {
{CKA_PRIVATE, (CK_VOID_PTR)&g_ck_false, sizeof(CK_BBOOL)},
{CKA_LABEL, (CK_VOID_PTR)g_label, g_label_len},
{CKA_SIGN, (CK_VOID_PTR)&g_ck_true, sizeof(CK_BBOOL)},
{CKA_VERIFY, (CK_VOID_PTR)&g_ck_true, sizeof(CK_BBOOL)},
{CKA_CLASS, &key_class, sizeof(key_class)},
{CKA_KEY_TYPE, (CK_VOID_PTR)&key_type, sizeof(key_type)},
{CKA_VALUE, (CK_VOID_PTR)key_data_.get(), (CK_ULONG)keylen_},
};
EXPECT_CKR_OK(g_fns->C_CreateObject(session_, attrs.data(), attrs.size(), &key_));
}
~HmacTest() {
if (key_ != INVALID_OBJECT_HANDLE) {
g_fns->C_DestroyObject(session_, key_);
}
}
protected:
vector<CK_ATTRIBUTE_TYPE> attrs_;
HmacInfo info_;
const int keylen_;
unique_ptr<CK_BYTE, freer> key_data_;
CK_OBJECT_HANDLE key_;
const int datalen_;
unique_ptr<CK_BYTE, freer> data_;
CK_MECHANISM mechanism_;
};
#define SKIP_IF_UNIMPLEMENTED_RV(rv) \
if ((rv) == CKR_MECHANISM_INVALID) { \
stringstream ss; \
ss << "Digest type " << mechanism_type_name(mechanism_.mechanism) << " not implemented"; \
TEST_SKIPPED(ss.str()); \
return; \
}
TEST_P(HmacTest, SignVerify) {
CK_RV rv = g_fns->C_SignInit(session_, &mechanism_, key_);
SKIP_IF_UNIMPLEMENTED_RV(rv);
ASSERT_CKR_OK(rv);
CK_BYTE output[1024];
CK_ULONG output_len = sizeof(output);
EXPECT_CKR_OK(g_fns->C_Sign(session_, data_.get(), datalen_, output, &output_len));
EXPECT_EQ(info_.mac_size, output_len);
ASSERT_CKR_OK(g_fns->C_VerifyInit(session_, &mechanism_, key_));
EXPECT_CKR_OK(g_fns->C_Verify(session_, data_.get(), datalen_, output, output_len));
}
TEST_P(HmacTest, SignFailVerify) {
CK_RV rv = g_fns->C_SignInit(session_, &mechanism_, key_);
SKIP_IF_UNIMPLEMENTED_RV(rv);
ASSERT_CKR_OK(rv);
CK_BYTE output[1024];
CK_ULONG output_len = sizeof(output);
EXPECT_CKR_OK(g_fns->C_Sign(session_, data_.get(), datalen_, output, &output_len));
// Corrupt one byte of the signature.
output[0]++;
ASSERT_CKR_OK(g_fns->C_VerifyInit(session_, &mechanism_, key_));
EXPECT_CKR(CKR_SIGNATURE_INVALID,
g_fns->C_Verify(session_, data_.get(), datalen_, output, output_len));
}
INSTANTIATE_TEST_CASE_P(HMACs, HmacTest,
::testing::Values("MD5-HMAC",
"SHA1-HMAC",
"SHA256-HMAC",
"SHA384-HMAC",
"SHA512-HMAC"));
TEST_F(ReadOnlySessionTest, HmacTestVectors) {
for (const auto& kv : kTestVectors) {
vector<TestData> testcases = kTestVectors[kv.first];
HmacInfo info = kHmacInfo[kv.first];
for (const TestData& testcase : kv.second) {
string key = hex_decode(testcase.key);
// C_SignInit may complain if the key is too short
// (i.e. shorter than HMAC output size).
// if short_key is true, failing with CKR_KEY_SIZE_RANGE is allowed.
bool short_key = (testcase.key.size() < testcase.hash.size());
CK_OBJECT_CLASS key_class = CKO_SECRET_KEY;
CK_KEY_TYPE key_type = CKK_GENERIC_SECRET;
vector<CK_ATTRIBUTE> attrs = {
{CKA_PRIVATE, (CK_VOID_PTR)&g_ck_false, sizeof(CK_BBOOL)},
{CKA_LABEL, (CK_VOID_PTR)g_label, g_label_len},
{CKA_SIGN, (CK_VOID_PTR)&g_ck_true, sizeof(CK_BBOOL)},
{CKA_VERIFY, (CK_VOID_PTR)&g_ck_true, sizeof(CK_BBOOL)},
{CKA_CLASS, &key_class, sizeof(key_class)},
{CKA_KEY_TYPE, (CK_VOID_PTR)&key_type, sizeof(key_type)},
{CKA_VALUE, (CK_VOID_PTR)key.data(), key.size()},
};
CK_OBJECT_HANDLE key_object;
ASSERT_CKR_OK(g_fns->C_CreateObject(session_, attrs.data(), attrs.size(), &key_object));
CK_MECHANISM mechanism = {info.hmac, NULL_PTR, 0};
CK_RV rv = g_fns->C_SignInit(session_, &mechanism, key_object);
if (rv == CKR_MECHANISM_INVALID || (short_key && rv == CKR_KEY_SIZE_RANGE))
continue;
ASSERT_CKR_OK(rv);
string data = hex_decode(testcase.data);
CK_BYTE output[1024];
CK_ULONG output_len = sizeof(output);
EXPECT_CKR_OK(g_fns->C_Sign(session_, (CK_BYTE_PTR)data.data(), data.size(), output, &output_len));
string output_hex = hex_data(output, output_len);
EXPECT_EQ(testcase.hash, output_hex);
}
}
}
} // namespace test
} // namespace pkcs11