36 lines
942 B
C++
36 lines
942 B
C++
// Copyright (c) 2025-2026, Brandon Lehmann
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// BSD 3-Clause License (see LICENSE)
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#include "tinyaes/cbc.h"
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#include <cassert>
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#include <cstddef>
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#include <cstdint>
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extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
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{
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if (size < 32)
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return 0;
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// First 16 bytes = key, next 16 bytes = IV, rest = plaintext
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std::vector<uint8_t> key(data, data + 16);
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std::vector<uint8_t> iv(data + 16, data + 32);
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size_t remaining = size - 32;
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if (remaining == 0)
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return 0;
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// Use PKCS#7 which accepts any length
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std::vector<uint8_t> plaintext(data + 32, data + size);
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std::vector<uint8_t> ct, pt;
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auto result = tinyaes::cbc_encrypt_pkcs7(key, iv, plaintext, ct);
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if (result != tinyaes::Result::Success)
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return 0;
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result = tinyaes::cbc_decrypt_pkcs7(key, iv, ct, pt);
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assert(result == tinyaes::Result::Success);
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assert(pt == plaintext);
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return 0;
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}
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