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51 lines
1.6 KiB
51 lines
1.6 KiB
4 months ago
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// Copyright 2020 Google Inc.
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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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// This fuzz target fuzzes the same API as
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// https://github.com/google/boringssl/blob/master/fuzz/pkcs8.cc, but it employs
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// libprotobuf-mutator for structure-aware fuzzing.
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#include <openssl/bytestring.h>
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#include <openssl/err.h>
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#include <openssl/evp.h>
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#include <openssl/mem.h>
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#include "asn1_pdu.pb.h"
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#include "asn1_pdu_to_der.h"
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#include "libprotobuf-mutator/src/libfuzzer/libfuzzer_macro.h"
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DEFINE_PROTO_FUZZER(const asn1_pdu::PDU& asn1) {
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asn1_pdu::ASN1PDUToDER converter;
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std::vector<uint8_t> encoded = converter.PDUToDER(asn1);
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const uint8_t* buf = encoded.data();
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size_t len = encoded.size();
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CBS cbs;
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CBS_init(&cbs, buf, len);
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bssl::UniquePtr<EVP_PKEY> pkey(EVP_parse_private_key(&cbs));
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if (pkey == NULL) {
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return;
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}
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uint8_t* der;
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size_t der_len;
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bssl::ScopedCBB cbb;
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if (CBB_init(cbb.get(), 0) &&
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EVP_marshal_private_key(cbb.get(), pkey.get()) &&
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CBB_finish(cbb.get(), &der, &der_len)) {
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OPENSSL_free(der);
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}
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ERR_clear_error();
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}
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