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diff --git a/chromium/net/quic/core/crypto/curve25519_key_exchange_test.cc b/chromium/net/quic/core/crypto/curve25519_key_exchange_test.cc
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+++ b/chromium/net/quic/core/crypto/curve25519_key_exchange_test.cc
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+// Copyright (c) 2013 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "net/quic/core/crypto/curve25519_key_exchange.h"
+
+#include <memory>
+
+#include "base/strings/string_piece.h"
+#include "net/quic/core/crypto/quic_random.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+using base::StringPiece;
+using std::string;
+
+namespace net {
+namespace test {
+
+// SharedKey just tests that the basic key exchange identity holds: that both
+// parties end up with the same key.
+TEST(Curve25519KeyExchange, SharedKey) {
+  QuicRandom* const rand = QuicRandom::GetInstance();
+
+  for (int i = 0; i < 5; i++) {
+    const string alice_key(Curve25519KeyExchange::NewPrivateKey(rand));
+    const string bob_key(Curve25519KeyExchange::NewPrivateKey(rand));
+
+    std::unique_ptr<Curve25519KeyExchange> alice(
+        Curve25519KeyExchange::New(alice_key));
+    std::unique_ptr<Curve25519KeyExchange> bob(
+        Curve25519KeyExchange::New(bob_key));
+
+    const StringPiece alice_public(alice->public_value());
+    const StringPiece bob_public(bob->public_value());
+
+    string alice_shared, bob_shared;
+    ASSERT_TRUE(alice->CalculateSharedKey(bob_public, &alice_shared));
+    ASSERT_TRUE(bob->CalculateSharedKey(alice_public, &bob_shared));
+    ASSERT_EQ(alice_shared, bob_shared);
+  }
+}
+
+}  // namespace test
+}  // namespace net