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author | practicalswift <practicalswift@users.noreply.github.com> | 2020-06-25 09:58:13 +0000 |
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committer | practicalswift <practicalswift@users.noreply.github.com> | 2020-08-18 18:03:56 +0000 |
commit | b667a90389cce7e1bf882f4ac78323c48858efaa (patch) | |
tree | 6dfd7fc44223ecdb76e5d80e4f9e378ca97b7a4e /src/test | |
parent | a2a250c7d07bcb80cefca9dd4a7ce57f41291334 (diff) | |
download | bitcoin-b667a90389cce7e1bf882f4ac78323c48858efaa.tar.xz |
tests: Add fuzzing harness for SigHasLowR(...) and ecdsa_signature_parse_der_lax(...)
Diffstat (limited to 'src/test')
-rw-r--r-- | src/test/fuzz/secp256k1_ecdsa_signature_parse_der_lax.cpp | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/src/test/fuzz/secp256k1_ecdsa_signature_parse_der_lax.cpp b/src/test/fuzz/secp256k1_ecdsa_signature_parse_der_lax.cpp new file mode 100644 index 0000000000..ed8c7aba89 --- /dev/null +++ b/src/test/fuzz/secp256k1_ecdsa_signature_parse_der_lax.cpp @@ -0,0 +1,33 @@ +// Copyright (c) 2020 The Bitcoin Core developers +// Distributed under the MIT software license, see the accompanying +// file COPYING or http://www.opensource.org/licenses/mit-license.php. + +#include <key.h> +#include <secp256k1.h> +#include <test/fuzz/FuzzedDataProvider.h> +#include <test/fuzz/fuzz.h> +#include <test/fuzz/util.h> + +#include <cstdint> +#include <vector> + +bool SigHasLowR(const secp256k1_ecdsa_signature* sig); +int ecdsa_signature_parse_der_lax(const secp256k1_context* ctx, secp256k1_ecdsa_signature* sig, const unsigned char* input, size_t inputlen); + +void test_one_input(const std::vector<uint8_t>& buffer) +{ + FuzzedDataProvider fuzzed_data_provider{buffer.data(), buffer.size()}; + const std::vector<uint8_t> signature_bytes = ConsumeRandomLengthByteVector(fuzzed_data_provider); + if (signature_bytes.data() == nullptr) { + return; + } + secp256k1_context* secp256k1_context_verify = secp256k1_context_create(SECP256K1_CONTEXT_VERIFY); + secp256k1_ecdsa_signature sig_der_lax; + const bool parsed_der_lax = ecdsa_signature_parse_der_lax(secp256k1_context_verify, &sig_der_lax, signature_bytes.data(), signature_bytes.size()) == 1; + if (parsed_der_lax) { + ECC_Start(); + (void)SigHasLowR(&sig_der_lax); + ECC_Stop(); + } + secp256k1_context_destroy(secp256k1_context_verify); +} |