Merge pull request #4219

9137ad2c blockchain: add a testnet v9 a day after v8 (moneromooo-monero)
ac4f71c2 wallet2: bump testnet rollback to account for coming reorg (moneromooo-monero)
8f418a6d bulletproofs: #include <openssl/bn.h> (moneromooo-monero)
2bf63650 bulletproofs: speed up the latest changes a bit (moneromooo-monero)
044dff5a bulletproofs: scale points by 8 to ensure subgroup validity (moneromooo-monero)
c83012c4 bulletproofs: match aggregated verification to sarang's latest prototype (moneromooo-monero)
ce0c7432 performance_tests: add padded bulletproof construction (moneromooo-monero)
1224e53b core_tests: add a test for 4-aggregated BP verification (moneromooo-monero)
0e6ed559 fuzz_tests: add a bulletproof fuzz test (moneromooo-monero)
463434d1 more comprehensive test for ge_p3 comparison to identity/point at infinity (moneromooo-monero)
d0a0565f unit_tests: add a few more multiexp unit tests (moneromooo-monero)
6526d87f core_tests: add a test for a tx with empty bulletproof (moneromooo-monero)
a129bbd9 multiexp: fix maxscalar off by one (moneromooo-monero)
7ed496cc ringct: error out when hashToPoint* returns the point at infinity (moneromooo-monero)
d1591853 cryptonote_basic: check output type before using it (moneromooo-monero)
61632dc1 ringct: prevent a potential very large allocation (moneromooo-monero)
a4317e61 crypto: some paranoid checks in generate_signature/check_signature (moneromooo-monero)
7434df1c crypto: never return zero in random32_unbiased (moneromooo-monero)
0825e974 multiexp: fix wrong Bos-Coster result for 1 non trivial input (moneromooo-monero)
a1359ad4 Check inputs to addKeys are in range (moneromooo-monero)
fe0fa3b9 bulletproofs: reject x, y, z, or w[i] being zero (moneromooo-monero)
5ffb2ff9 v8: per byte fee, pad bulletproofs, fixed 11 ring size (moneromooo-monero)
869b3bf8 bulletproofs: a few fixes from the Kudelski review (moneromooo-monero)
c4291762 bulletproofs: reject points not in the main subgroup (moneromooo-monero)
15697177 bulletproofs: speed up a few multiplies using existing Hi cache (moneromooo-monero)
0b05a0fa Add Pippenger cache and limit Straus cache size (moneromooo-monero)
51eb3bdc add pippenger unit tests (moneromooo-monero)
b17b8db3 performance_tests: add stats and loop count multiplier options (moneromooo-monero)
7314d919 perf_timer: split timer class into a base one and a logging one (moneromooo-monero)
d126a02b performance_tests: add aggregated bulletproof tx verification (moneromooo-monero)
263431c4 Pippenger multiexp (moneromooo-monero)
1ed0ed4d multiexp: cut down on memory allocations (moneromooo-monero)
1b867e7f precalc the ge_p3 representation of H (moneromooo-monero)
ef56529f performance_tests: document the tested bulletproof layouts (moneromooo-monero)
30111780 unit_tests: a couple more bulletproof unit tests for gamma (moneromooo-monero)
c444b1b2 require canonical multi output bulletproof layout (moneromooo-monero)
7e67c52f Add a define for the max number of bulletproof multi-outputs (moneromooo-monero)
2a8fcb42 Bulletproof aggregated verification and tests (moneromooo-monero)
126196b0 multiexp: some speedups (moneromooo-monero)
71d67bda aligned: aligned memory alloc/realloc/free (moneromooo-monero)
cb9ecab1 performance_tests: add signature generation/verification (moneromooo-monero)
bacf0a1e bulletproofs: add aggregated verification (moneromooo-monero)
e895c3de make straus cached mode thread safe, and add tests for it (moneromooo-monero)
7f48bf05 multiexp: bos coster now works for just one point (moneromooo-monero)
9ce9f8ca bulletproofs: add multi output bulletproofs to rct (moneromooo-monero)
f34e2e20 performance_tests: add tx checking tests with more than 2 outputs (moneromooo-monero)
0793184b performance_tests: add a --verbose flag, and default to terse (moneromooo-monero)
939bc223 add Straus multiexp (moneromooo-monero)
9ff6e6a0 ringct: add bos coster multiexp (moneromooo-monero)
e9164bb3 bulletproofs: misc optimizations (moneromooo-monero)
112f32f0 performance_tests: add crypto ops (moneromooo-monero)
f5d7b993 performance_tests: add bulletproofs (moneromooo-monero)
8f4ce989 performance_tests: add RingCT MLSAG gen/ver tests (moneromooo-monero)
1aa10c43 performance_tests: add (Borromean) range proofs (moneromooo-monero)
aacfd6e3 bulletproofs: multi-output bulletproofs (moneromooo-monero)
cb1cc757 performance_tests: don't override log level to 0 (moneromooo-monero)

1 files changed, 139 insertions, 0 deletions

diff --git a/src/common/aligned.c b/src/common/aligned.c
new file mode 100644
index 000000000..763dfd0e7
--- /dev/null
+++ b/src/common/aligned.c
@@ -0,0 +1,139 @@
+// Copyright (c) 2017-2018, 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.
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <stdint.h>
+#include <string.h>
+#include "aligned.h"
+
+static inline int is_power_of_2(size_t n) { return n && (n & (n-1)) == 0; }
+
+#define MAGIC 0xaa0817161500ff81
+#define MAGIC_FREED 0xaa0817161500ff82
+
+static void local_abort(const char *msg)
+{
+  fprintf(stderr, "%s\n", msg);
+#ifdef NDEBUG
+  _exit(1);
+#else
+  abort();
+#endif
+}
+
+typedef struct
+{
+  uint64_t magic;
+  void *raw;
+  size_t bytes;
+  size_t align;
+} control;
+
+void *aligned_malloc(size_t bytes, size_t align)
+{
+  void *raw, *ptr;
+  control *ctrl;
+
+  if (!is_power_of_2(align))
+    return NULL;
+  if (bytes > (size_t)-1 - align)
+    return NULL;
+  if (bytes + align > (size_t)-1 - sizeof(control))
+    return NULL;
+
+  raw = malloc(bytes + sizeof(control) + align);
+  if (!raw)
+    return NULL;
+  ptr = (void*)(((uintptr_t)raw + align + sizeof(control) - 1) & ~(align-1));
+  ctrl = ((control*)ptr) - 1;
+  ctrl->magic = MAGIC;
+  ctrl->raw = raw;
+  ctrl->bytes = bytes;
+  ctrl->align = align;
+  return ptr;
+}
+
+void *aligned_realloc(void *ptr, size_t bytes, size_t align)
+{
+  void *raw, *ptr2;
+  control *ctrl, *ctrl2;
+
+  if (!ptr)
+    return aligned_malloc(bytes, align);
+  if (!bytes)
+  {
+     aligned_free(ptr);
+     return NULL;
+  }
+  if (!is_power_of_2(align))
+    return NULL;
+
+  ctrl = ((control*)ptr) - 1;
+  if (ctrl->magic == MAGIC_FREED)
+    local_abort("Double free detected");
+  if (ctrl->magic != MAGIC)
+    local_abort("Freeing unallocated memory");
+  if (ctrl->align != align)
+    return NULL;
+  if (ctrl->bytes >= bytes)
+    return ptr;
+
+  if (ctrl->bytes > (size_t)-1 - ctrl->align)
+    return NULL;
+  if (ctrl->bytes + ctrl->align > (size_t)-1 - sizeof(control))
+    return NULL;
+
+  raw = malloc(bytes + sizeof(control) + ctrl->align);
+  if (!raw)
+    return NULL;
+  ptr2 = (void*)(((uintptr_t)raw + ctrl->align + sizeof(control) - 1) & ~(ctrl->align-1));
+  memcpy(ptr2, ptr, ctrl->bytes);
+  ctrl2 = ((control*)ptr2) - 1;
+  ctrl2->magic = MAGIC;
+  ctrl2->raw = raw;
+  ctrl2->bytes = bytes;
+  ctrl2->align = ctrl->align;
+  ctrl->magic = MAGIC_FREED;
+  free(ctrl->raw);
+  return ptr2;
+}
+
+void aligned_free(void *ptr)
+{
+  if (!ptr)
+    return;
+  control *ctrl = ((control*)ptr) - 1;
+  if (ctrl->magic == MAGIC_FREED)
+    local_abort("Double free detected");
+  if (ctrl->magic != MAGIC)
+    local_abort("Freeing unallocated memory");
+  ctrl->magic = MAGIC_FREED;
+  free(ctrl->raw);
+}