diff options
Diffstat (limited to 'src/test')
-rw-r--r-- | src/test/fuzz/secp256k1_ec_seckey_import_export_der.cpp | 38 | ||||
-rw-r--r-- | src/test/fuzz/secp256k1_ecdsa_signature_parse_der_lax.cpp | 33 |
2 files changed, 71 insertions, 0 deletions
diff --git a/src/test/fuzz/secp256k1_ec_seckey_import_export_der.cpp b/src/test/fuzz/secp256k1_ec_seckey_import_export_der.cpp new file mode 100644 index 0000000000..d4f302a8d3 --- /dev/null +++ b/src/test/fuzz/secp256k1_ec_seckey_import_export_der.cpp @@ -0,0 +1,38 @@ +// 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> + +int ec_seckey_import_der(const secp256k1_context* ctx, unsigned char* out32, const unsigned char* seckey, size_t seckeylen); +int ec_seckey_export_der(const secp256k1_context* ctx, unsigned char* seckey, size_t* seckeylen, const unsigned char* key32, bool compressed); + +void test_one_input(const std::vector<uint8_t>& buffer) +{ + FuzzedDataProvider fuzzed_data_provider{buffer.data(), buffer.size()}; + secp256k1_context* secp256k1_context_sign = secp256k1_context_create(SECP256K1_CONTEXT_SIGN); + { + std::vector<uint8_t> out32(32); + (void)ec_seckey_import_der(secp256k1_context_sign, out32.data(), ConsumeFixedLengthByteVector(fuzzed_data_provider, CKey::SIZE).data(), CKey::SIZE); + } + { + std::vector<uint8_t> seckey(CKey::SIZE); + const std::vector<uint8_t> key32 = ConsumeFixedLengthByteVector(fuzzed_data_provider, 32); + size_t seckeylen = CKey::SIZE; + const bool compressed = fuzzed_data_provider.ConsumeBool(); + const bool exported = ec_seckey_export_der(secp256k1_context_sign, seckey.data(), &seckeylen, key32.data(), compressed); + if (exported) { + std::vector<uint8_t> out32(32); + const bool imported = ec_seckey_import_der(secp256k1_context_sign, out32.data(), seckey.data(), seckey.size()) == 1; + assert(imported && key32 == out32); + } + } + secp256k1_context_destroy(secp256k1_context_sign); +} 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); +} |