1 files changed, 76 insertions, 0 deletions
diff --git a/protocols/Telegram/tdlib/td/benchmark/bench_handshake.cpp b/protocols/Telegram/tdlib/td/benchmark/bench_handshake.cpp
new file mode 100644
index 0000000000..08d04f009c
--- /dev/null
+++ b/protocols/Telegram/tdlib/td/benchmark/bench_handshake.cpp
@@ -0,0 +1,76 @@
+//
+// Copyright Aliaksei Levin (levlam@telegram.org), Arseny Smirnov (arseny30@gmail.com) 2014-2018
+//
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+//
+#include "td/utils/benchmark.h"  // for bench, do_not_optimize_away, etc
+
+#include "td/mtproto/crypto.h"
+
+#include "td/utils/base64.h"
+#include "td/utils/logging.h"
+#include "td/utils/Slice.h"
+
+#include <map>
+
+#if TD_LINUX || TD_ANDROID || TD_TIZEN
+#include <semaphore.h>
+#endif
+
+namespace td {
+
+static int32 g = 3;
+static string prime_base64 =
+    "xxyuucaxyQSObFIvcPE_c5gNQCOOPiHBSTTQN1Y9kw9IGYoKp8FAWCKUk9IlMPTb-jNvbgrJJROVQ67UTM58NyD9UfaUWHBaxozU_mtrE6vcl0ZRKW"
+    "kyhFTxj6-MWV9kJHf-lrsqlB1bzR1KyMxJiAcI-ps3jjxPOpBgvuZ8-aSkppWBEFGQfhYnU7VrD2tBDbp02KhLKhSzFE4O8ShHVP0X7ZUNWWW0ud1G"
+    "WC2xF40WnGvEZbDW_5yjko_vW5rk5Bj8Feg-vqD4f6n_Xu1wBQ3tKEn0e_lZ2VaFDOkphR8NgRX2NbEF7i5OFdBLJFS_b0-t8DSxBAMRnNjjuS_MW"
+    "w";
+
+class HandshakeBench : public Benchmark {
+  std::string get_description() const override {
+    return "Handshake";
+  }
+
+  class FakeDhCallback : public DhCallback {
+   public:
+    int is_good_prime(Slice prime_str) const override {
+      auto it = cache.find(prime_str.str());
+      if (it == cache.end()) {
+        return -1;
+      }
+      return it->second;
+    }
+    void add_good_prime(Slice prime_str) const override {
+      cache[prime_str.str()] = 1;
+    }
+    void add_bad_prime(Slice prime_str) const override {
+      cache[prime_str.str()] = 0;
+    }
+    mutable std::map<string, int> cache;
+  } dh_callback;
+
+  void run(int n) override {
+    DhHandshake a;
+    DhHandshake b;
+    auto prime = base64url_decode(prime_base64).move_as_ok();
+    for (int i = 0; i < n; i += 2) {
+      a.set_config(g, prime);
+      b.set_config(g, prime);
+      b.set_g_a(a.get_g_b());
+      a.set_g_a(b.get_g_b());
+      a.run_checks(&dh_callback).ensure();
+      b.run_checks(&dh_callback).ensure();
+      auto a_key = a.gen_key();
+      auto b_key = b.gen_key();
+      CHECK(a_key.first == b_key.first);
+    }
+  }
+};
+}  // namespace td
+
+int main() {
+  SET_VERBOSITY_LEVEL(VERBOSITY_NAME(DEBUG));
+  td::bench(td::HandshakeBench());
+  return 0;
+}