mirror of
https://github.com/AntelopeIO/boringssl.git
synced 2026-07-21 14:43:53 +00:00
David Benjamin
a1dffbfed9
We use unsigned, but we actually assume it is 32-bit for the bit-packing strategy. But also introduce a typedef to hint that callers shouldn't treat it as an arbitrary 32-bit integer. A typedef would also allow us to extend to uint64_t in the future, if we ever need to. Update-Note: Some APIs switch from unsigned * to uint32_t * out pointers. This is only source-compatible if unsigned and uint32_t are the exact same type. The CQ suggests this is indeed true. If they are not, replace unsigned with CBS_ASN1_TAG to fix the build. Bug: 525 Change-Id: I45cbe127c1aa252f5f6a169dca2e44d1e6e1d669 Reviewed-on: https://boringssl-review.googlesource.com/c/boringssl/+/54986 Reviewed-by: Bob Beck <bbe@google.com> Commit-Queue: David Benjamin <davidben@google.com>
58 lines
1.8 KiB
C++
58 lines
1.8 KiB
C++
/* Copyright (c) 2022, Google Inc.
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
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* SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
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* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
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* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
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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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CBB body_cbb;
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if (!CBB_init(cbb.get(), consumed) ||
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!CBB_add_asn1(cbb.get(), &body_cbb, tag) ||
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!CBB_add_bytes(&body_cbb, CBS_data(&body), CBS_len(&body)) ||
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!CBB_flush(cbb.get()) ||
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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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