e8d78fb219
Test: ./cdm_engine_fuzzer Test: ./crypto_session_fuzzer Bug: 309924911 Change-Id: I6fdf1b11173bc428b36749d7184ae6dc38cedc32
503 lines
22 KiB
C++
503 lines
22 KiB
C++
/*
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* Copyright (C) 2023 The Android Open Source Project
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*
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* Licensed under the Apache license, Version 2.0 (the "license");
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* you may not use this file except in compliance with the license.
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* You may obtain a copy of the license at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the license is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the license for the specific language governing permissions and
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* limitations under the license.
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*
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*/
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#include "crypto_session.h"
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#include "entitlement_key_session.h"
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#include "properties.h"
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#include "string_conversions.h"
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#include "wv_cdm_constants.h"
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#include <fuzzer/FuzzedDataProvider.h>
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using namespace wvcdm;
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constexpr int32_t kStringLength = 20;
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constexpr int32_t kMaxSamplesCount = 1000;
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constexpr int32_t kMinSamplesCount = 1;
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constexpr int32_t kMaxByte = 1000;
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constexpr int32_t kMinByte = 0;
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constexpr int32_t kIvSize = 16;
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constexpr int32_t kDefaultSampleSize = 0;
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class CryptoSessionFuzzer {
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public:
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CryptoSessionFuzzer(const uint8_t* data, size_t size) : mFdp(data, size) {};
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void process();
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void FillDecryptParams(CdmDecryptionParametersV16& params);
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void SetKeyParams(CryptoKey& inputKey);
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void setUp(CryptoSession* cryptoSession, const std::string& keyId,
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std::string& message, std::string& signature,
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std::string& coreMessage);
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void initializeStripeBuffer(std::vector<uint8_t>* buffer, size_t size);
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private:
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FuzzedDataProvider mFdp;
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};
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void CryptoSessionFuzzer::initializeStripeBuffer(std::vector<uint8_t>* buffer,
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size_t size) {
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buffer->assign(size, 0);
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for (size_t i = 0; i < size; ++i) {
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(*buffer)[i] = mFdp.ConsumeIntegral<uint8_t>();
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}
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}
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void CryptoSessionFuzzer::SetKeyParams(CryptoKey& inputKey) {
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inputKey.set_key_data(mFdp.ConsumeRandomLengthString(kStringLength));
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inputKey.set_key_data_iv(mFdp.ConsumeRandomLengthString(kStringLength));
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inputKey.set_key_control(mFdp.ConsumeRandomLengthString(kStringLength));
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inputKey.set_key_control_iv(mFdp.ConsumeRandomLengthString(kStringLength));
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inputKey.set_cipher_mode(mFdp.ConsumeBool() ? kCipherModeCbc
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: kCipherModeCtr);
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inputKey.set_track_label(mFdp.ConsumeRandomLengthString(kStringLength));
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inputKey.set_entitlement_key_id(
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mFdp.ConsumeRandomLengthString(kStringLength));
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}
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void CryptoSessionFuzzer::FillDecryptParams(
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CdmDecryptionParametersV16& params) {
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params.cipher_mode = mFdp.ConsumeBool() ? kCipherModeCbc : kCipherModeCtr;
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params.observe_legacy_fields = mFdp.ConsumeBool();
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uint32_t noOfSamples =
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mFdp.ConsumeIntegralInRange<uint32_t>(kMinSamplesCount, kMaxSamplesCount);
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while (--noOfSamples) {
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size_t sampleSize = 0;
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uint32_t noOfSubSamples = mFdp.ConsumeIntegralInRange<uint32_t>(
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kMinSamplesCount, kMaxSamplesCount);
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std::vector<CdmDecryptionSubsample> subSampleVector;
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while (--noOfSubSamples) {
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size_t clearBytes =
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mFdp.ConsumeIntegralInRange<size_t>(kMinByte, kMaxByte);
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size_t protectedBytes =
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mFdp.ConsumeIntegralInRange<size_t>(kMinByte, kMaxByte);
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CdmDecryptionSubsample subsample(clearBytes, protectedBytes);
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sampleSize += clearBytes + protectedBytes;
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subSampleVector.push_back(subsample);
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}
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std::vector<uint8_t> iv;
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iv = mFdp.ConsumeBytes<uint8_t>(kIvSize);
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if (iv.size() != kIvSize) {
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iv.resize(kIvSize, 0);
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}
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void* decryptBuffer;
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std::vector<uint8_t> eBuffer;
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for (int i = 0; i < sampleSize; ++i) {
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eBuffer.push_back(
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mFdp.ConsumeIntegralInRange<uint8_t>(kMinByte, kMaxByte));
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}
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size_t decryptBufferOffset =
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mFdp.ConsumeIntegralInRange<uint8_t>(kMinByte, kMaxByte);
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CdmDecryptionSample sample(eBuffer.data(), decryptBuffer,
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decryptBufferOffset, sampleSize, iv);
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sample.subsamples = subSampleVector;
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params.samples.push_back(sample);
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}
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}
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void CryptoSessionFuzzer::setUp(CryptoSession* cryptoSession,
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const std::string& keyId, std::string& message,
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std::string& signature,
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std::string& coreMessage) {
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bool shouldSpecifyAlgorithm;
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OEMCrypto_SignatureHashAlgorithm algorithm;
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CdmLicenseKeyType keyType1 = kLicenseKeyTypeEntitlement;
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cryptoSession->PrepareAndSignProvisioningRequest(
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message, &coreMessage, &signature, shouldSpecifyAlgorithm, algorithm);
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cryptoSession->PrepareAndSignLicenseRequest(
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message, &coreMessage, &signature, shouldSpecifyAlgorithm, algorithm);
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cryptoSession->LoadLicense(message, coreMessage, signature, keyType1);
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CryptoKey inputKey;
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inputKey.set_key_id(keyId);
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CryptoSessionFuzzer::SetKeyParams(inputKey);
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std::vector<CryptoKey> keys = { inputKey };
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cryptoSession->LoadEntitledContentKeys(keys);
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}
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void CryptoSessionFuzzer::process() {
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metrics::CryptoMetrics cryptoMetrics;
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std::unique_ptr<CryptoSession> cryptoSession(
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CryptoSession::MakeCryptoSession(&cryptoMetrics));
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CdmLicenseKeyType keyType;
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OEMCrypto_SignatureHashAlgorithm algorithm;
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Properties::Init();
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RequestedSecurityLevel requestedSecurityLevel =
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mFdp.ConsumeBool() ? kLevelDefault : kLevel3;
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cryptoSession->Open(requestedSecurityLevel);
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while (mFdp.remaining_bytes()) {
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auto invokeCryptoSessionAPI = mFdp.PickValueInArray<
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const std::function<void()>>({
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[&]() {
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std::string token = mFdp.ConsumeRandomLengthString(kStringLength);
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std::string additionalToken =
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mFdp.ConsumeRandomLengthString(kStringLength);
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cryptoSession->GetProvisioningToken(
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mFdp.ConsumeBool() ? &token : nullptr,
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mFdp.ConsumeBool() ? &additionalToken : nullptr);
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},
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[&]() {
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cryptoSession->SetSystemId(
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mFdp.ConsumeIntegral<uint32_t>() /*system_id*/);
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},
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[&]() {
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std::string provisioningId;
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cryptoSession->GetProvisioningId(&provisioningId);
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cryptoSession->GetExternalDeviceUniqueId(&provisioningId);
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},
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[&]() {
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cryptoSession->LoadLicense(
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mFdp.ConsumeRandomLengthString(kStringLength) /*signed_message*/,
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mFdp.ConsumeRandomLengthString(kStringLength) /*coreMessage*/,
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mFdp.ConsumeRandomLengthString(kStringLength) /*signature*/,
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keyType);
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},
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[&]() {
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std::string coreMessage =
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mFdp.ConsumeRandomLengthString(kStringLength);
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std::string signature = mFdp.ConsumeRandomLengthString(kStringLength);
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cryptoSession->PrepareAndSignRenewalRequest(
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mFdp.ConsumeRandomLengthString(kStringLength) /*message*/,
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mFdp.ConsumeBool() ? &coreMessage : nullptr,
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mFdp.ConsumeBool() ? &signature : nullptr);
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},
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[&]() {
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cryptoSession->LoadRenewal(
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mFdp.ConsumeRandomLengthString(kStringLength) /*signed_message*/,
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mFdp.ConsumeRandomLengthString(kStringLength) /*coreMessage*/,
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mFdp.ConsumeRandomLengthString(kStringLength) /*signature*/);
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},
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[&]() {
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const std::string& message =
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mFdp.ConsumeRandomLengthString(kStringLength);
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std::string coreMessage =
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mFdp.ConsumeRandomLengthString(kStringLength);
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std::string signature = mFdp.ConsumeRandomLengthString(kStringLength);
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OEMCrypto_SignatureHashAlgorithm algorithm;
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bool shouldSpecifyAlgorithm = mFdp.ConsumeBool();
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cryptoSession->PrepareAndSignProvisioningRequest(
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message, mFdp.ConsumeBool() ? &coreMessage : nullptr,
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mFdp.ConsumeBool() ? &signature : nullptr, shouldSpecifyAlgorithm,
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algorithm);
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},
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[&]() {
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if (mFdp.ConsumeBool()) {
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const CryptoWrappedKey privateKey;
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cryptoSession->LoadCertificatePrivateKey(privateKey);
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} else {
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CryptoWrappedKey::Type type =
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(CryptoWrappedKey::Type)mFdp.ConsumeIntegral<int32_t>();
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std::string key = mFdp.ConsumeRandomLengthString(kStringLength);
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const CryptoWrappedKey privateKey(type, key);
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cryptoSession->LoadCertificatePrivateKey(privateKey);
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}
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},
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[&]() {
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std::string publicKey;
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std::string publicKeySignature;
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std::string wrappedPrivateKey;
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CryptoWrappedKey::Type keyType;
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cryptoSession->GenerateCertificateKeyPair(
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&publicKey, &publicKeySignature, &wrappedPrivateKey, &keyType);
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},
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[&]() {
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if (mFdp.ConsumeBool()) {
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const CryptoWrappedKey privateKey;
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cryptoSession->LoadOemCertificatePrivateKey(privateKey);
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} else {
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CryptoWrappedKey::Type type =
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(CryptoWrappedKey::Type)mFdp.ConsumeIntegral<int32_t>();
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std::string key = mFdp.ConsumeRandomLengthString(kStringLength);
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const CryptoWrappedKey privateKey(type, key);
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cryptoSession->LoadOemCertificatePrivateKey(privateKey);
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}
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},
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[&]() {
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size_t out;
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RequestedSecurityLevel security_level =
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(RequestedSecurityLevel)mFdp.ConsumeIntegral<int32_t>();
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cryptoSession->GetNumberOfOpenSessions(security_level, &out);
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},
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[&]() {
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std::string info = mFdp.ConsumeRandomLengthString(kStringLength);
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cryptoSession->GetBuildInformation(&info);
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},
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[&]() {
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CdmWatermarkingSupport support =
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(CdmWatermarkingSupport)mFdp.ConsumeIntegral<int32_t>();
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cryptoSession->GetWatermarkingSupport(&support);
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},
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[&]() {
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CdmProductionReadiness readiness =
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(CdmProductionReadiness)mFdp.ConsumeIntegral<int32_t>();
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cryptoSession->GetProductionReadiness(&readiness);
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},
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[&]() {
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RequestedSecurityLevel security_level =
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(RequestedSecurityLevel)mFdp.ConsumeIntegral<int32_t>();
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size_t number_of_entries = mFdp.ConsumeIntegral<size_t>();
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cryptoSession->GetMaximumUsageTableEntries(security_level,
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&number_of_entries);
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},
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[&]() {
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RequestedSecurityLevel security_level =
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(RequestedSecurityLevel)mFdp.ConsumeIntegral<int32_t>();
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uint32_t decrypt_hash_support = mFdp.ConsumeIntegral<uint32_t>();
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cryptoSession->GetDecryptHashSupport(security_level,
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&decrypt_hash_support);
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},
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[&]() {
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bool hasSupport = mFdp.ConsumeBool();
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cryptoSession->HasUsageTableSupport(&hasSupport);
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},
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[&]() {
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cryptoSession->DeactivateUsageInformation(
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mFdp.ConsumeRandomLengthString(
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kStringLength) /*provider_session_token*/);
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},
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[&]() {
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std::string usageReport =
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mFdp.ConsumeRandomLengthString(kStringLength);
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CryptoSession::UsageDurationStatus usageDurationStatus;
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int64_t secondsSinceStarted = mFdp.ConsumeIntegral<int64_t>();
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int64_t secondsSinceLastPlayed = mFdp.ConsumeIntegral<int64_t>();
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cryptoSession->GenerateUsageReport(
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mFdp.ConsumeRandomLengthString(
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kStringLength) /*provider_session_token*/,
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&usageReport, &usageDurationStatus, &secondsSinceStarted,
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&secondsSinceLastPlayed);
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},
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[&]() {
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uint32_t nonce = mFdp.ConsumeIntegral<uint32_t>();
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cryptoSession->GenerateNonce(&nonce);
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},
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[&]() {
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std::string signedMessage, coreMessage, signature;
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std::string wrappedPrivateKey;
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cryptoSession->LoadProvisioning(
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signedMessage, coreMessage, signature,
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mFdp.ConsumeBool() ? &wrappedPrivateKey : nullptr);
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},
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[&]() {
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cryptoSession->SetDecryptHash(
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mFdp.ConsumeIntegral<int16_t>() /*frame_number*/,
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mFdp.ConsumeRandomLengthString(kStringLength) /*hash*/);
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},
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[&]() {
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CdmEncryptionAlgorithm algorithm;
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std::string outBuffer;
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cryptoSession->GenericDecrypt(
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mFdp.ConsumeRandomLengthString(kStringLength) /*in_buffer*/,
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mFdp.ConsumeRandomLengthString(kStringLength) /*key_id*/,
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mFdp.ConsumeRandomLengthString(kStringLength) /*iv*/, algorithm,
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&outBuffer);
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},
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[&]() {
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CdmSigningAlgorithm algorithm = mFdp.ConsumeBool()
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? kSigningAlgorithmHmacSha256
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: kSigningAlgorithmUnknown;
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std::string signature;
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cryptoSession->GenericSign(
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mFdp.ConsumeRandomLengthString(kStringLength) /*message*/,
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mFdp.ConsumeRandomLengthString(kStringLength) /*key_id*/,
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algorithm, &signature);
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},
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[&]() {
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CdmSigningAlgorithm algorithm = kSigningAlgorithmHmacSha256;
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const std::string signature;
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cryptoSession->GenericVerify(
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mFdp.ConsumeRandomLengthString(kStringLength) /*message*/,
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mFdp.ConsumeRandomLengthString(kStringLength) /*key_id*/,
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algorithm, signature);
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},
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[&]() {
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UsageTableHeader usageTableHeader;
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cryptoSession->CreateUsageTableHeader(requestedSecurityLevel,
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&usageTableHeader);
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cryptoSession->LoadUsageTableHeader(requestedSecurityLevel,
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usageTableHeader);
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uint32_t newEntryCount;
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cryptoSession->ShrinkUsageTableHeader(
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requestedSecurityLevel, newEntryCount, &usageTableHeader);
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},
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[&]() {
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const UsageTableHeader usageTableHeader;
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cryptoSession->LoadUsageTableHeader(requestedSecurityLevel,
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usageTableHeader);
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},
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[&]() {
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uint32_t entryNumber;
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cryptoSession->CreateUsageEntry(&entryNumber);
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cryptoSession->MoveUsageEntry(entryNumber);
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},
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[&]() {
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const UsageEntry usageEntry;
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cryptoSession->LoadUsageEntry(
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mFdp.ConsumeIntegral<uint32_t>() /*entry_number*/, usageEntry);
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},
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[&]() {
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UsageTableHeader usageTableHeader;
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UsageEntry usageEntry;
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cryptoSession->UpdateUsageEntry(&usageTableHeader, &usageEntry);
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},
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[&]() {
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bool canSupportOutput = mFdp.ConsumeBool();
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bool canDisableOutput = mFdp.ConsumeBool();
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bool canSupportCgmsA = mFdp.ConsumeBool();
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cryptoSession->GetAnalogOutputCapabilities(
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&canSupportOutput, &canDisableOutput, &canSupportCgmsA);
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},
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[&]() {
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cryptoSession->SetDebugIgnoreKeyboxCount(
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mFdp.ConsumeIntegral<uint32_t>() /*count*/);
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},
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[&]() { cryptoSession->GetOkpFallbackPolicy(); },
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[&]() {
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std::string request = mFdp.ConsumeRandomLengthString(kStringLength);
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cryptoSession->PrepareOtaProvisioningRequest(
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mFdp.ConsumeBool() /*use_test_key*/, &request);
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},
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[&]() {
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cryptoSession->LoadOtaProvisioning(
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mFdp.ConsumeBool() /*use_test_key*/,
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mFdp.ConsumeRandomLengthString(kStringLength) /*response*/);
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},
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[&]() {
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uint32_t tier = mFdp.ConsumeIntegral<uint32_t>();
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cryptoSession->GetResourceRatingTier(&tier);
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},
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[&]() {
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size_t max;
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cryptoSession->GetMaxNumberOfSessions(requestedSecurityLevel, &max);
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},
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[&]() {
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std::string keyData = mFdp.ConsumeRandomLengthString(kStringLength);
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cryptoSession->GetTokenFromKeybox(requestedSecurityLevel, &keyData);
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},
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[&]() {
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std::string bcc = mFdp.ConsumeRandomLengthString(kStringLength);
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std::string additionalSignature =
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mFdp.ConsumeRandomLengthString(kStringLength);
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cryptoSession->GetBootCertificateChain(&bcc, &additionalSignature);
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},
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[&]() {
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cryptoSession->GenerateDerivedKeys(
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mFdp.ConsumeRandomLengthString(kStringLength) /*message*/);
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},
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[&]() {
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CdmDecryptionParametersV16 params2;
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cryptoSession->Decrypt(params2);
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},
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[&]() {
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const std::string& message =
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mFdp.ConsumeRandomLengthString(kStringLength);
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std::string coreMessage, signature;
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bool shouldSpecifyAlgorithm;
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OEMCrypto_SignatureHashAlgorithm algorithm;
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cryptoSession->PrepareAndSignProvisioningRequest(
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message, &coreMessage, &signature, shouldSpecifyAlgorithm,
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algorithm);
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cryptoSession->PrepareAndSignLicenseRequest(
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message, &coreMessage, &signature, shouldSpecifyAlgorithm,
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algorithm);
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},
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[&]() {
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std::string keyId = mFdp.ConsumeRandomLengthString(kStringLength);
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std::string message = mFdp.ConsumeRandomLengthString(kStringLength);
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std::string signature, coreMessage;
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setUp(cryptoSession.get(), keyId, message, signature, coreMessage);
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std::vector<uint8_t> inVector;
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std::vector<uint8_t> ivVector;
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std::string inBuffer;
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std::string iv;
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CdmEncryptionAlgorithm algorithmEncrypt =
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kEncryptionAlgorithmAesCbc128;
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std::string outBuffer;
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initializeStripeBuffer(&inVector, CONTENT_KEY_SIZE * 15);
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inBuffer = std::string(inVector.begin(), inVector.end());
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initializeStripeBuffer(&ivVector, KEY_IV_SIZE);
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iv = std::string(ivVector.begin(), ivVector.end());
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cryptoSession->GenericEncrypt(inBuffer, keyId, iv, algorithmEncrypt,
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&outBuffer);
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},
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[&]() {
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std::string keyId = mFdp.ConsumeRandomLengthString(kStringLength);
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std::string message = mFdp.ConsumeRandomLengthString(kStringLength);
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std::string signature, coreMessage;
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setUp(cryptoSession.get(), keyId, message, signature, coreMessage);
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std::vector<uint8_t> inVector;
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std::vector<uint8_t> ivVector;
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std::string inBuffer;
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std::string iv;
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CdmEncryptionAlgorithm algorithmEncrypt =
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kEncryptionAlgorithmAesCbc128;
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std::string outBuffer;
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initializeStripeBuffer(&inVector, CONTENT_KEY_SIZE * 15);
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inBuffer = std::string(inVector.begin(), inVector.end());
|
|
initializeStripeBuffer(&ivVector, KEY_IV_SIZE);
|
|
iv = std::string(ivVector.begin(), ivVector.end());
|
|
|
|
cryptoSession->GenericDecrypt(inBuffer, keyId, iv, algorithmEncrypt,
|
|
&outBuffer);
|
|
},
|
|
[&]() {
|
|
std::string keyId = mFdp.ConsumeRandomLengthString(kStringLength);
|
|
std::string message = mFdp.ConsumeRandomLengthString(kStringLength);
|
|
std::string signature, coreMessage;
|
|
setUp(cryptoSession.get(), keyId, message, signature, coreMessage);
|
|
|
|
CdmSigningAlgorithm algorithm2 = kSigningAlgorithmHmacSha256;
|
|
cryptoSession->GenericSign(message, keyId, algorithm2, &signature);
|
|
},
|
|
[&]() {
|
|
std::string keyId = mFdp.ConsumeRandomLengthString(kStringLength);
|
|
std::string message = mFdp.ConsumeRandomLengthString(kStringLength);
|
|
std::string signature, coreMessage;
|
|
setUp(cryptoSession.get(), keyId, message, signature, coreMessage);
|
|
|
|
CdmSigningAlgorithm algorithm2 = kSigningAlgorithmHmacSha256;
|
|
cryptoSession->GenericVerify(message, keyId, algorithm2, signature);
|
|
},
|
|
[&]() {
|
|
const std::string keyId =
|
|
mFdp.ConsumeRandomLengthString(kStringLength);
|
|
std::string message = mFdp.ConsumeRandomLengthString(kStringLength);
|
|
std::string signature, coreMessage;
|
|
setUp(cryptoSession.get(), keyId, message, signature, coreMessage);
|
|
CdmDecryptionParametersV16 params(keyId);
|
|
CryptoSessionFuzzer::FillDecryptParams(params);
|
|
cryptoSession->Decrypt(params);
|
|
},
|
|
});
|
|
invokeCryptoSessionAPI();
|
|
}
|
|
cryptoSession->Close();
|
|
}
|
|
|
|
extern "C" int LLVMFuzzerTestOneInput(const uint8_t * data, size_t size) {
|
|
CryptoSessionFuzzer cryptoSessionFuzzer(data, size);
|
|
cryptoSessionFuzzer.process();
|
|
return 0;
|
|
}
|