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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,
* You can obtain one at http://mozilla.org/MPL/2.0/. */
#include <memory>
#include "blapi.h"
#include "pk11pub.h"
#include "gtest/gtest.h"
namespace nss_test {
class PK11PrngTest : public ::testing::Test {};
#ifdef UNSAFE_FUZZER_MODE
// Test that two consecutive calls to the RNG return two distinct values.
TEST_F(PK11PrngTest, Fuzz_DetPRNG) {
std::vector<uint8_t> rnd1(2048, 0);
std::vector<uint8_t> rnd2(2048, 0);
SECStatus rv = PK11_GenerateRandom(rnd1.data(), rnd1.size());
EXPECT_EQ(rv, SECSuccess);
rv = PK11_GenerateRandom(rnd2.data(), rnd2.size());
EXPECT_EQ(rv, SECSuccess);
EXPECT_NE(rnd1, rnd2);
}
// Test that two consecutive calls to the RNG return two equal values
// when the RNG's internal state is reset before each call.
TEST_F(PK11PrngTest, Fuzz_DetPRNG_Reset) {
std::vector<uint8_t> rnd1(2048, 0);
std::vector<uint8_t> rnd2(2048, 0);
EXPECT_EQ(SECSuccess, RNG_RandomUpdate(NULL, 0));
SECStatus rv = PK11_GenerateRandom(rnd1.data(), rnd1.size());
EXPECT_EQ(rv, SECSuccess);
EXPECT_EQ(SECSuccess, RNG_RandomUpdate(NULL, 0));
rv = PK11_GenerateRandom(rnd2.data(), rnd2.size());
EXPECT_EQ(rv, SECSuccess);
EXPECT_EQ(rnd1, rnd2);
}
// Test that the RNG's internal state progresses in a consistent manner.
TEST_F(PK11PrngTest, Fuzz_DetPRNG_StatefulReset) {
std::vector<uint8_t> rnd1(2048, 0);
std::vector<uint8_t> rnd2(2048, 0);
EXPECT_EQ(SECSuccess, RNG_RandomUpdate(NULL, 0));
SECStatus rv = PK11_GenerateRandom(rnd1.data(), rnd1.size() - 1024);
EXPECT_EQ(rv, SECSuccess);
rv = PK11_GenerateRandom(rnd1.data() + 1024, rnd1.size() - 1024);
EXPECT_EQ(rv, SECSuccess);
EXPECT_EQ(SECSuccess, RNG_RandomUpdate(NULL, 0));
rv = PK11_GenerateRandom(rnd2.data(), rnd2.size() - 1024);
EXPECT_EQ(rv, SECSuccess);
rv = PK11_GenerateRandom(rnd2.data() + 1024, rnd2.size() - 1024);
EXPECT_EQ(rv, SECSuccess);
EXPECT_EQ(rnd1, rnd2);
}
TEST_F(PK11PrngTest, Fuzz_DetPRNG_Seed) {
std::vector<uint8_t> rnd1(2048, 0);
std::vector<uint8_t> rnd2(2048, 0);
std::vector<uint8_t> seed = {0x01, 0x22, 0xAA, 0x45};
SECStatus rv = PK11_RandomUpdate(seed.data(), seed.size());
EXPECT_EQ(rv, SECSuccess);
rv = PK11_GenerateRandom(rnd1.data(), rnd1.size());
EXPECT_EQ(rv, SECSuccess);
rv = PK11_GenerateRandom(rnd2.data(), rnd2.size());
EXPECT_EQ(rv, SECSuccess);
EXPECT_NE(rnd1, rnd2);
}
TEST_F(PK11PrngTest, Fuzz_DetPRNG_StatefulReset_Seed) {
std::vector<uint8_t> rnd1(2048, 0);
std::vector<uint8_t> rnd2(2048, 0);
std::vector<uint8_t> seed = {0x01, 0x22, 0xAA, 0x45};
SECStatus rv = PK11_RandomUpdate(seed.data(), seed.size());
EXPECT_EQ(rv, SECSuccess);
rv = PK11_GenerateRandom(rnd1.data(), rnd1.size() - 1024);
EXPECT_EQ(rv, SECSuccess);
rv = PK11_GenerateRandom(rnd1.data() + 1024, rnd1.size() - 1024);
EXPECT_EQ(rv, SECSuccess);
rv = PK11_RandomUpdate(seed.data(), seed.size());
EXPECT_EQ(rv, SECSuccess);
rv = PK11_GenerateRandom(rnd2.data(), rnd2.size() - 1024);
EXPECT_EQ(rv, SECSuccess);
rv = PK11_GenerateRandom(rnd2.data() + 1024, rnd2.size() - 1024);
EXPECT_EQ(rv, SECSuccess);
EXPECT_EQ(rnd1, rnd2);
}
#endif
} // namespace nss_test
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