Inside Bitcoin
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Inside Bitcoin
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The code behind the network, with room to understand it.
Release published 2026-10-28 · Snapshot fetched 2026-11-01. Latest stable release at fetch time; development branches and Git history are excluded. Only the selected code window and visible folders load here.
1// Copyright (c) 2020-present The Bitcoin Core developers2// Distributed under the MIT software license, see the accompanying3// file COPYING or http://www.opensource.org/licenses/mit-license.php.5#include <crypto/aes.h>6#include <test/fuzz/FuzzedDataProvider.h>7#include <test/fuzz/fuzz.h>8#include <test/fuzz/util.h>10#include <cassert>11#include <cstdint>12#include <vector>14FUZZ_TARGET(crypto_aes256cbc)15{16FuzzedDataProvider fuzzed_data_provider{buffer.data(), buffer.size()};17const std::vector<uint8_t> key = ConsumeFixedLengthByteVector(fuzzed_data_provider, AES256_KEYSIZE);18const std::vector<uint8_t> iv = ConsumeFixedLengthByteVector(fuzzed_data_provider, AES_BLOCKSIZE);19const bool pad = fuzzed_data_provider.ConsumeBool();21AES256CBCEncrypt encrypt{key.data(), iv.data(), pad};22AES256CBCDecrypt decrypt{key.data(), iv.data(), pad};24LIMITED_WHILE (fuzzed_data_provider.ConsumeBool(), 10000) {25const std::vector<uint8_t> plaintext = ConsumeRandomLengthByteVector(fuzzed_data_provider);26std::vector<uint8_t> ciphertext(plaintext.size() + AES_BLOCKSIZE);27const int encrypt_ret = encrypt.Encrypt(plaintext.data(), plaintext.size(), ciphertext.data());28ciphertext.resize(encrypt_ret);29std::vector<uint8_t> decrypted_plaintext(ciphertext.size());30const int decrypt_ret = decrypt.Decrypt(ciphertext.data(), ciphertext.size(), decrypted_plaintext.data());31decrypted_plaintext.resize(decrypt_ret);32assert(decrypted_plaintext == plaintext || (!pad && plaintext.size() % AES_BLOCKSIZE != 0 && encrypt_ret == 0 && decrypt_ret == 0));33}34}
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