tests: add performance test for ge_frombytes_vartime

At luigi1111's request

tests/performance_tests/CMakeLists.txt

@@ -35,6 +35,7 @@ set(performance_tests_headers
   construct_tx.h
   derive_public_key.h
   derive_secret_key.h
+  ge_frombytes_vartime.h
   generate_key_derivation.h
   generate_key_image.h
   generate_key_image_helper.h

tests/performance_tests/ge_frombytes_vartime.h

@@ -0,0 +1,70 @@
+// Copyright (c) 2014-2016, The Monero Project
+// 
+// All rights reserved.
+// 
+// Redistribution and use in source and binary forms, with or without modification, are
+// permitted provided that the following conditions are met:
+// 
+// 1. Redistributions of source code must retain the above copyright notice, this list of
+//    conditions and the following disclaimer.
+// 
+// 2. Redistributions in binary form must reproduce the above copyright notice, this list
+//    of conditions and the following disclaimer in the documentation and/or other
+//    materials provided with the distribution.
+// 
+// 3. Neither the name of the copyright holder nor the names of its contributors may be
+//    used to endorse or promote products derived from this software without specific
+//    prior written permission.
+// 
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
+// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
+// THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
+// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+// 
+// Parts of this file are originally copyright (c) 2012-2013 The Cryptonote developers
+
+#pragma once
+
+#include "crypto/crypto.h"
+#include "cryptonote_core/cryptonote_basic.h"
+
+#include "single_tx_test_base.h"
+
+class test_ge_frombytes_vartime : public multi_tx_test_base<1>
+{
+public:
+  static const size_t loop_count = 10000;
+
+  typedef multi_tx_test_base<1> base_class;
+
+  bool init()
+  {
+    using namespace cryptonote;
+
+    if (!base_class::init())
+      return false;
+
+    m_alice.generate();
+
+    std::vector<tx_destination_entry> destinations;
+    destinations.push_back(tx_destination_entry(1, m_alice.get_keys().m_account_address));
+
+    return construct_tx(this->m_miners[this->real_source_idx].get_keys(), this->m_sources, destinations, std::vector<uint8_t>(), m_tx, 0);
+  }
+
+  bool test()
+  {
+    ge_p3 unp;
+    const cryptonote::txin_to_key& txin = boost::get<cryptonote::txin_to_key>(m_tx.vin[0]);
+    return ge_frombytes_vartime(&unp, (const unsigned char*) &txin.k_image) == 0;
+  }
+
+private:
+  cryptonote::account_base m_alice;
+  cryptonote::transaction m_tx;
+};

tests/performance_tests/main.cpp

@@ -37,6 +37,7 @@
 #include "cn_slow_hash.h"
 #include "derive_public_key.h"
 #include "derive_secret_key.h"
+#include "ge_frombytes_vartime.h"
 #include "generate_key_derivation.h"
 #include "generate_key_image.h"
 #include "generate_key_image_helper.h"
@@ -98,6 +99,7 @@ int main(int argc, char** argv)
   TEST_PERFORMANCE0(test_generate_key_image);
   TEST_PERFORMANCE0(test_derive_public_key);
   TEST_PERFORMANCE0(test_derive_secret_key);
+  TEST_PERFORMANCE0(test_ge_frombytes_vartime);
 
   TEST_PERFORMANCE0(test_cn_slow_hash);