add bulletproofs to the build, with basic unit tests

Based on Java code from Sarang Noether

2 files changed, 71 insertions, 0 deletions

diff --git a/tests/unit_tests/CMakeLists.txt b/tests/unit_tests/CMakeLists.txt
index e10648d20..4073a17dc 100644
--- a/tests/unit_tests/CMakeLists.txt
+++ b/tests/unit_tests/CMakeLists.txt
@@ -34,6 +34,7 @@ set(unit_tests_sources
   blockchain_db.cpp
   block_queue.cpp
   block_reward.cpp
+  bulletproofs.cpp
   canonical_amounts.cpp
   chacha8.cpp
   checkpoints.cpp
diff --git a/tests/unit_tests/bulletproofs.cpp b/tests/unit_tests/bulletproofs.cpp
new file mode 100644
index 000000000..543cc8190
--- /dev/null
+++ b/tests/unit_tests/bulletproofs.cpp
@@ -0,0 +1,70 @@
+// Copyright (c) 2017, 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
+
+#include "gtest/gtest.h"
+
+#include "ringct/bulletproofs.h"
+
+TEST(bulletproofs, valid_zero)
+{
+  rct::Bulletproof proof = bulletproof_PROVE(0, rct::skGen());
+  ASSERT_TRUE(rct::bulletproof_VERIFY(proof));
+}
+
+TEST(bulletproofs, valid_max)
+{
+  rct::Bulletproof proof = bulletproof_PROVE(0xffffffffffffffff, rct::skGen());
+  ASSERT_TRUE(rct::bulletproof_VERIFY(proof));
+}
+
+TEST(bulletproofs, valid_random)
+{
+  for (int n = 0; n < 8; ++n)
+  {
+    rct::Bulletproof proof = bulletproof_PROVE(crypto::rand<uint64_t>(), rct::skGen());
+    ASSERT_TRUE(rct::bulletproof_VERIFY(proof));
+  }
+}
+
+TEST(bulletproofs, invalid_8)
+{
+  rct::key invalid_amount = rct::zero();
+  invalid_amount[8] = 1;
+  rct::Bulletproof proof = bulletproof_PROVE(invalid_amount, rct::skGen());
+  ASSERT_FALSE(rct::bulletproof_VERIFY(proof));
+}
+
+TEST(bulletproofs, invalid_31)
+{
+  rct::key invalid_amount = rct::zero();
+  invalid_amount[31] = 1;
+  rct::Bulletproof proof = bulletproof_PROVE(invalid_amount, rct::skGen());
+  ASSERT_FALSE(rct::bulletproof_VERIFY(proof));
+}