mirror of
https://boringssl.googlesource.com/boringssl
synced 2026-07-21 14:43:51 +00:00
David Benjamin
217e99d014
This is common enough that we probably should have one available. Saves declaring a variable, calling flush, etc. Change-Id: Ib21627e9e4caea01c729ad0dbb6266fdd30bb533 Reviewed-on: https://boringssl-review.googlesource.com/c/boringssl/+/78788 Commit-Queue: Adam Langley <agl@google.com> Auto-Submit: David Benjamin <davidben@google.com> Commit-Queue: David Benjamin <davidben@google.com> Reviewed-by: Adam Langley <agl@google.com>
56 lines
1.6 KiB
C++
56 lines
1.6 KiB
C++
// Copyright 2022 The BoringSSL Authors
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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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// https://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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#include <stdlib.h>
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#include <string.h>
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#include <openssl/bytestring.h>
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#include <openssl/ecdsa.h>
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#include <openssl/mem.h>
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extern "C" int LLVMFuzzerTestOneInput(const uint8_t *buf, size_t len) {
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CBS cbs, body;
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CBS_ASN1_TAG tag;
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CBS_init(&cbs, buf, len);
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if (CBS_get_any_asn1(&cbs, &body, &tag)) {
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// DER has a unique encoding, so any parsed input should round-trip
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// correctly.
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size_t consumed = len - CBS_len(&cbs);
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bssl::ScopedCBB cbb;
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if (!CBB_init(cbb.get(), consumed) ||
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!CBB_add_asn1_element(cbb.get(), tag, CBS_data(&body),
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CBS_len(&body)) ||
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CBB_len(cbb.get()) != consumed ||
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memcmp(CBB_data(cbb.get()), buf, consumed) != 0) {
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abort();
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}
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}
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ECDSA_SIG *sig = ECDSA_SIG_from_bytes(buf, len);
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if (sig != NULL) {
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uint8_t *enc;
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size_t enc_len;
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if (!ECDSA_SIG_to_bytes(&enc, &enc_len, sig) ||
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enc_len != len ||
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memcmp(buf, enc, len) != 0) {
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abort();
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}
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OPENSSL_free(enc);
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ECDSA_SIG_free(sig);
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}
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return 0;
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}
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