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authorpracticalswift <practicalswift@users.noreply.github.com>2020-06-25 13:06:18 +0000
committerpracticalswift <practicalswift@users.noreply.github.com>2020-08-18 18:03:57 +0000
commit46fcac1e4b9e0b1026bc0b663582148b2fd60390 (patch)
treee124ec85d1df970fb7a1982165344b12dbdeaaa3 /src/test
parentb667a90389cce7e1bf882f4ac78323c48858efaa (diff)
tests: Add fuzzing harness for ec_seckey_import_der(...) and ec_seckey_export_der(...)
Diffstat (limited to 'src/test')
-rw-r--r--src/test/fuzz/secp256k1_ec_seckey_import_export_der.cpp38
1 files changed, 38 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);
+}