mirror of https://github.com/google/oss-fuzz.git
46 lines
1.5 KiB
C++
46 lines
1.5 KiB
C++
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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/cert.cc, but it employs
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// libprotobuf-mutator for structure-aware fuzzing.
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#include <openssl/err.h>
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#include <openssl/mem.h>
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#include <openssl/x509.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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X509* x509 = d2i_X509(NULL, &buf, len);
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if (x509 != NULL) {
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// Extract the public key.
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EVP_PKEY_free(X509_get_pubkey(x509));
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// Reserialize the structure.
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uint8_t* der = NULL;
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i2d_X509(x509, &der);
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OPENSSL_free(der);
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}
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X509_free(x509);
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ERR_clear_error();
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}
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