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/* 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 "nss.h"
#include "pk11pub.h"
#include "sechash.h"
#include "cpputil.h"
#include "scoped_ptrs.h"
#include "gtest/gtest.h"
namespace nss_test {
class Pk11SignatureTest : public ::testing::Test {
protected:
virtual CK_MECHANISM_TYPE mechanism() = 0;
virtual SECItem* parameters() = 0;
virtual SECOidTag hashOID() = 0;
ScopedSECKEYPrivateKey ImportPrivateKey(const uint8_t* pkcs8,
size_t pkcs8_len) {
ScopedPK11SlotInfo slot(PK11_GetInternalSlot());
if (!slot) {
return nullptr;
}
SECItem pkcs8Item = {siBuffer, toUcharPtr(pkcs8),
static_cast<unsigned int>(pkcs8_len)};
SECKEYPrivateKey* key = nullptr;
SECStatus rv = PK11_ImportDERPrivateKeyInfoAndReturnKey(
slot.get(), &pkcs8Item, nullptr, nullptr, false, false, KU_ALL, &key,
nullptr);
if (rv != SECSuccess) {
return nullptr;
}
return ScopedSECKEYPrivateKey(key);
}
ScopedSECKEYPublicKey ImportPublicKey(const uint8_t* spki, size_t spki_len) {
SECItem spkiItem = {siBuffer, toUcharPtr(spki),
static_cast<unsigned int>(spki_len)};
ScopedCERTSubjectPublicKeyInfo certSpki(
SECKEY_DecodeDERSubjectPublicKeyInfo(&spkiItem));
return ScopedSECKEYPublicKey(SECKEY_ExtractPublicKey(certSpki.get()));
}
ScopedSECItem ComputeHash(const uint8_t* data, size_t len) {
unsigned int hLen = HASH_ResultLenByOidTag(hashOID());
ScopedSECItem hash(SECITEM_AllocItem(nullptr, nullptr, hLen));
if (!hash) {
return nullptr;
}
SECStatus rv = PK11_HashBuf(hashOID(), hash->data, data, len);
if (rv != SECSuccess) {
return nullptr;
}
return hash;
}
ScopedSECItem SignHashedData(ScopedSECKEYPrivateKey& privKey,
ScopedSECItem& hash) {
unsigned int sLen = PK11_SignatureLen(privKey.get());
ScopedSECItem sig(SECITEM_AllocItem(nullptr, nullptr, sLen));
if (!sig) {
return nullptr;
}
SECStatus rv = PK11_SignWithMechanism(privKey.get(), mechanism(),
parameters(), sig.get(), hash.get());
if (rv != SECSuccess) {
return nullptr;
}
return sig;
}
ScopedSECItem ImportPrivateKeyAndSignHashedData(const uint8_t* pkcs8,
size_t pkcs8_len,
const uint8_t* data,
size_t data_len) {
ScopedSECKEYPrivateKey privKey(ImportPrivateKey(pkcs8, pkcs8_len));
if (!privKey) {
return nullptr;
}
ScopedSECItem hash(ComputeHash(data, data_len));
if (!hash) {
return nullptr;
}
return ScopedSECItem(SignHashedData(privKey, hash));
}
void Verify(const uint8_t* spki, size_t spki_len, const uint8_t* data,
size_t data_len, const uint8_t* sig, size_t sig_len) {
ScopedSECKEYPublicKey pubKey(ImportPublicKey(spki, spki_len));
ASSERT_TRUE(pubKey);
ScopedSECItem hash(ComputeHash(data, data_len));
ASSERT_TRUE(hash);
SECItem sigItem = {siBuffer, toUcharPtr(sig),
static_cast<unsigned int>(sig_len)};
// Verify.
SECStatus rv = PK11_VerifyWithMechanism(
pubKey.get(), mechanism(), parameters(), &sigItem, hash.get(), nullptr);
EXPECT_EQ(rv, SECSuccess);
}
void SignAndVerify(const uint8_t* pkcs8, size_t pkcs8_len,
const uint8_t* spki, size_t spki_len, const uint8_t* data,
size_t data_len) {
ScopedSECItem sig(
ImportPrivateKeyAndSignHashedData(pkcs8, pkcs8_len, data, data_len));
ASSERT_TRUE(sig);
Verify(spki, spki_len, data, data_len, sig->data, sig->len);
}
};
#define SIG_TEST_VECTOR_VERIFY(spki, data, sig) \
Verify(spki, sizeof(spki), data, sizeof(data), sig, sizeof(sig));
#define SIG_TEST_VECTOR_SIGN_VERIFY(pkcs8, spki, data) \
SignAndVerify(pkcs8, sizeof(pkcs8), spki, sizeof(spki), data, sizeof(data));
} // namespace nss_test
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