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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 "gtest/gtest.h"
#include <stdint.h>
#include <memory>
#include "blapi.h"
#include "secitem.h"
template <class T>
struct ScopedDelete {
void operator()(T* ptr) {
if (ptr) {
PORT_FreeArena(ptr->arena, PR_TRUE);
}
}
};
typedef std::unique_ptr<RSAPrivateKey, ScopedDelete<RSAPrivateKey>>
ScopedRSAPrivateKey;
class RSATest : public ::testing::Test {
protected:
RSAPrivateKey* CreateKeyWithExponent(int keySizeInBits,
unsigned char publicExponent) {
SECItem exp = {siBuffer, 0, 0};
unsigned char pubExp[1] = {publicExponent};
exp.data = pubExp;
exp.len = 1;
return RSA_NewKey(keySizeInBits, &exp);
}
};
TEST_F(RSATest, expOneTest) {
ScopedRSAPrivateKey key(CreateKeyWithExponent(2048, 0x01));
ASSERT_TRUE(key == nullptr);
}
TEST_F(RSATest, expTwoTest) {
ScopedRSAPrivateKey key(CreateKeyWithExponent(2048, 0x02));
ASSERT_TRUE(key == nullptr);
}
TEST_F(RSATest, expFourTest) {
ScopedRSAPrivateKey key(CreateKeyWithExponent(2048, 0x04));
ASSERT_TRUE(key == nullptr);
}
TEST_F(RSATest, WrongKeysizeTest) {
ScopedRSAPrivateKey key(CreateKeyWithExponent(2047, 0x03));
ASSERT_TRUE(key == nullptr);
}
TEST_F(RSATest, expThreeTest) {
ScopedRSAPrivateKey key(CreateKeyWithExponent(2048, 0x03));
#ifdef NSS_FIPS_DISABLED
ASSERT_TRUE(key != nullptr);
#else
ASSERT_TRUE(key == nullptr);
#endif
}
TEST_F(RSATest, DecryptBlockTestErrors) {
unsigned char pubExp[3] = {0x01, 0x00, 0x01};
SECItem exp = {siBuffer, pubExp, 3};
ScopedRSAPrivateKey key(RSA_NewKey(2048, &exp));
ASSERT_TRUE(key);
uint8_t out[10] = {0};
uint8_t in_small[100] = {0};
unsigned int outputLen = 0;
unsigned int maxOutputLen = sizeof(out);
// This should fail because input the same size as the modulus (256).
SECStatus rv = RSA_DecryptBlock(key.get(), out, &outputLen, maxOutputLen,
in_small, sizeof(in_small));
EXPECT_EQ(SECFailure, rv);
uint8_t in[256] = {0};
// This should fail because the padding checks will fail,
// however, mitigations for Bleichenbacher attacks transform failures
// to a different output.
rv = RSA_DecryptBlock(key.get(), out, &outputLen, maxOutputLen, in,
sizeof(in));
EXPECT_EQ(SECSuccess, rv);
// outputLen should <= 256-11=245.
EXPECT_LE(outputLen, 245u);
// This should fail because the padding checks will fail,
// however, mitigations for Bleichenbacher attacks transform failures
// to a different output.
uint8_t out_long[260] = {0};
maxOutputLen = sizeof(out_long);
rv = RSA_DecryptBlock(key.get(), out_long, &outputLen, maxOutputLen, in,
sizeof(in));
EXPECT_EQ(SECSuccess, rv);
// outputLen should <= 256-11=245.
EXPECT_LE(outputLen, 245u);
// Everything over 256 must be 0 in the output.
uint8_t out_long_test[4] = {0};
EXPECT_EQ(0, memcmp(out_long_test, &out_long[256], 4));
}
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