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tests: Add fuzzing harness for AES256CBCEncrypt/AES256CBCDecrypt

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practicalswift 2020-06-16 13:57:40 +00:00
parent 9352c32325
commit 4cee53bba7
2 changed files with 41 additions and 0 deletions
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7
src/Makefile.test.include
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@ -34,6 +34,7 @@ FUZZ_TARGETS = \
test/fuzz/coins_view \
test/fuzz/crypto \
test/fuzz/crypto_aes256 \
test/fuzz/crypto_aes256cbc \
test/fuzz/crypto_common \
test/fuzz/cuckoocache \
test/fuzz/decode_tx \
@ -493,6 +494,12 @@ test_fuzz_crypto_aes256_LDADD = $(FUZZ_SUITE_LD_COMMON)
test_fuzz_crypto_aes256_LDFLAGS = $(RELDFLAGS) $(AM_LDFLAGS) $(LIBTOOL_APP_LDFLAGS)
test_fuzz_crypto_aes256_SOURCES = test/fuzz/crypto_aes256.cpp
test_fuzz_crypto_aes256cbc_CPPFLAGS = $(AM_CPPFLAGS) $(BITCOIN_INCLUDES)
test_fuzz_crypto_aes256cbc_CXXFLAGS = $(AM_CXXFLAGS) $(PIE_FLAGS)
test_fuzz_crypto_aes256cbc_LDADD = $(FUZZ_SUITE_LD_COMMON)
test_fuzz_crypto_aes256cbc_LDFLAGS = $(RELDFLAGS) $(AM_LDFLAGS) $(LIBTOOL_APP_LDFLAGS)
test_fuzz_crypto_aes256cbc_SOURCES = test/fuzz/crypto_aes256cbc.cpp
test_fuzz_crypto_common_CPPFLAGS = $(AM_CPPFLAGS) $(BITCOIN_INCLUDES)
test_fuzz_crypto_common_CXXFLAGS = $(AM_CXXFLAGS) $(PIE_FLAGS)
test_fuzz_crypto_common_LDADD = $(FUZZ_SUITE_LD_COMMON)

34
src/test/fuzz/crypto_aes256cbc.cpp Normal file
View file

@ -0,0 +1,34 @@
// Copyright (c) 2020 The Bitcoin Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
#include <crypto/aes.h>
#include <test/fuzz/FuzzedDataProvider.h>
#include <test/fuzz/fuzz.h>
#include <test/fuzz/util.h>
#include <cassert>
#include <cstdint>
#include <vector>
void test_one_input(const std::vector<uint8_t>& buffer)
{
FuzzedDataProvider fuzzed_data_provider{buffer.data(), buffer.size()};
const std::vector<uint8_t> key = ConsumeFixedLengthByteVector(fuzzed_data_provider, AES256_KEYSIZE);
const std::vector<uint8_t> iv = ConsumeFixedLengthByteVector(fuzzed_data_provider, AES_BLOCKSIZE);
const bool pad = fuzzed_data_provider.ConsumeBool();
AES256CBCEncrypt encrypt{key.data(), iv.data(), pad};
AES256CBCDecrypt decrypt{key.data(), iv.data(), pad};
while (fuzzed_data_provider.ConsumeBool()) {
const std::vector<uint8_t> plaintext = ConsumeRandomLengthByteVector(fuzzed_data_provider);
std::vector<uint8_t> ciphertext(plaintext.size() + AES_BLOCKSIZE);
const int encrypt_ret = encrypt.Encrypt(plaintext.data(), plaintext.size(), ciphertext.data());
ciphertext.resize(encrypt_ret);
std::vector<uint8_t> decrypted_plaintext(ciphertext.size());
const int decrypt_ret = decrypt.Decrypt(ciphertext.data(), ciphertext.size(), decrypted_plaintext.data());
decrypted_plaintext.resize(decrypt_ret);
assert(decrypted_plaintext == plaintext || (!pad && plaintext.size() % AES_BLOCKSIZE != 0 && encrypt_ret == 0 && decrypt_ret == 0));
}
}