Built motion from commit 6a09e18b.|2.6.11

[motion2.git] / legacy-libs / grpc-cloned / deps / grpc / third_party / boringssl / crypto / poly1305 / poly1305_test.cc

diff --git a/legacy-libs/grpc-cloned/deps/grpc/third_party/boringssl/crypto/poly1305/poly1305_test.cc b/legacy-libs/grpc-cloned/deps/grpc/third_party/boringssl/crypto/poly1305/poly1305_test.cc
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+++ b/legacy-libs/grpc-cloned/deps/grpc/third_party/boringssl/crypto/poly1305/poly1305_test.cc
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+/* Copyright (c) 2015, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <stdio.h>
+#include <string.h>
+
+#include <vector>
+
+#include <gtest/gtest.h>
+
+#include <openssl/poly1305.h>
+
+#include "../internal.h"
+#include "../test/file_test.h"
+#include "../test/test_util.h"
+
+
+static void TestSIMD(unsigned excess, const std::vector<uint8_t> &key,
+                     const std::vector<uint8_t> &in,
+                     const std::vector<uint8_t> &mac) {
+  poly1305_state state;
+  CRYPTO_poly1305_init(&state, key.data());
+
+  size_t done = 0;
+
+  // Feed 16 bytes in. Some implementations begin in non-SIMD mode and upgrade
+  // on-demand. Stress the upgrade path.
+  size_t todo = 16;
+  if (todo > in.size()) {
+    todo = in.size();
+  }
+  CRYPTO_poly1305_update(&state, in.data(), todo);
+  done += todo;
+
+  for (;;) {
+    // Feed 128 + |excess| bytes to test SIMD mode.
+    if (done + 128 + excess > in.size()) {
+      break;
+    }
+    CRYPTO_poly1305_update(&state, in.data() + done, 128 + excess);
+    done += 128 + excess;
+
+    // Feed |excess| bytes to ensure SIMD mode can handle short inputs.
+    if (done + excess > in.size()) {
+      break;
+    }
+    CRYPTO_poly1305_update(&state, in.data() + done, excess);
+    done += excess;
+  }
+
+  // Consume the remainder and finish.
+  CRYPTO_poly1305_update(&state, in.data() + done, in.size() - done);
+
+  // |CRYPTO_poly1305_finish| requires a 16-byte-aligned output.
+  alignas(16) uint8_t out[16];
+  CRYPTO_poly1305_finish(&state, out);
+  EXPECT_EQ(Bytes(out), Bytes(mac)) << "SIMD pattern " << excess << " failed.";
+}
+
+TEST(Poly1305Test, TestVectors) {
+  FileTestGTest("crypto/poly1305/poly1305_tests.txt", [](FileTest *t) {
+    std::vector<uint8_t> key, in, mac;
+    ASSERT_TRUE(t->GetBytes(&key, "Key"));
+    ASSERT_TRUE(t->GetBytes(&in, "Input"));
+    ASSERT_TRUE(t->GetBytes(&mac, "MAC"));
+    ASSERT_EQ(32u, key.size());
+    ASSERT_EQ(16u, mac.size());
+
+    // Test single-shot operation.
+    poly1305_state state;
+    CRYPTO_poly1305_init(&state, key.data());
+    CRYPTO_poly1305_update(&state, in.data(), in.size());
+    // |CRYPTO_poly1305_finish| requires a 16-byte-aligned output.
+    alignas(16) uint8_t out[16];
+    CRYPTO_poly1305_finish(&state, out);
+    EXPECT_EQ(Bytes(out), Bytes(mac)) << "Single-shot Poly1305 failed.";
+
+    // Test streaming byte-by-byte.
+    CRYPTO_poly1305_init(&state, key.data());
+    for (size_t i = 0; i < in.size(); i++) {
+      CRYPTO_poly1305_update(&state, &in[i], 1);
+    }
+    CRYPTO_poly1305_finish(&state, out);
+    EXPECT_EQ(Bytes(out), Bytes(mac)) << "Streaming Poly1305 failed.";
+
+    // Test SIMD stress patterns. OpenSSL's AVX2 assembly needs a multiple of
+    // four blocks, so test up to three blocks of excess.
+    TestSIMD(0, key, in, mac);
+    TestSIMD(16, key, in, mac);
+    TestSIMD(32, key, in, mac);
+    TestSIMD(48, key, in, mac);
+  });
+}