blob: 71de9a1545250d5bacbe66d32992d4f64580c659 [file] [log] [blame]
// Copyright 2021 Google LLC
// Licensed under the Apache License, Version 2.0 (the "License"); you may not
// use this file except in compliance with the License. You may obtain a copy of
// the License at
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
// License for the specific language governing permissions and limitations under
// the License.
#include "dice/dice.h"
#include "dice/fuzz_utils.h"
#include "dice/utils.h"
#include "fuzzer/FuzzedDataProvider.h"
using dice::fuzz::ConsumeRandomLengthStringAsBytesFrom;
using dice::fuzz::FuzzedInputValues;
extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
// Exit early if there might not be enough data to fill buffers.
if (size < 512) {
return 0;
FuzzedDataProvider fdp(data, size);
// Prepare the fuzzed inputs.
auto input_values = FuzzedInputValues::ConsumeFrom(fdp);
uint8_t current_cdi_attest[DICE_CDI_SIZE] = {};
uint8_t current_cdi_seal[DICE_CDI_SIZE] = {};
fdp.ConsumeData(&current_cdi_attest, sizeof(current_cdi_attest));
fdp.ConsumeData(&current_cdi_seal, sizeof(current_cdi_seal));
// Initialize output parameters with fuzz data in case they are wrongly being
// read from.
constexpr size_t kNextCdiCertificateBufferSize = 1024;
auto next_cdi_certificate_actual_size = fdp.ConsumeIntegral<size_t>();
uint8_t next_cdi_certificate[kNextCdiCertificateBufferSize] = {};
uint8_t next_cdi_attest[DICE_CDI_SIZE] = {};
uint8_t next_cdi_seal[DICE_CDI_SIZE] = {};
fdp.ConsumeData(&next_cdi_certificate, kNextCdiCertificateBufferSize);
fdp.ConsumeData(&next_cdi_attest, DICE_CDI_SIZE);
fdp.ConsumeData(&next_cdi_seal, DICE_CDI_SIZE);
// Fuzz the main flow.
DiceMainFlow(/*context=*/NULL, current_cdi_attest, current_cdi_seal,
input_values, kNextCdiCertificateBufferSize,
next_cdi_certificate, &next_cdi_certificate_actual_size,
next_cdi_attest, next_cdi_seal);
return 0;