chore: checkpoint before Python removal

vendor/aws-lc-sys/aws-lc/crypto/siphash/siphash_test.cc

@@ -0,0 +1,46 @@
+// Copyright (c) 2019, Google Inc.
+// SPDX-License-Identifier: ISC
+
+#include <stdint.h>
+
+#include <gtest/gtest.h>
+
+#include <openssl/siphash.h>
+
+#include "../test/file_test.h"
+#include "../test/test_util.h"
+
+TEST(SipHash, Basic) {
+  // This is the example from appendix A of the SipHash paper.
+  uint8_t key_bytes[16];
+  for (unsigned i = 0; i < 16; i++) {
+    key_bytes[i] = i;
+  }
+  uint64_t key[2];
+  memcpy(key, key_bytes, sizeof(key));
+
+  uint8_t input[15];
+  for (unsigned i = 0; i < sizeof(input); i++) {
+    input[i] = i;
+  }
+
+  EXPECT_EQ(UINT64_C(0xa129ca6149be45e5),
+            SIPHASH_24(key, input, sizeof(input)));
+}
+
+TEST(SipHash, Vectors) {
+  FileTestGTest("crypto/siphash/siphash_tests.txt", [](FileTest *t) {
+    std::vector<uint8_t> key, msg, hash_bytes;
+    ASSERT_TRUE(t->GetBytes(&key, "KEY"));
+    ASSERT_TRUE(t->GetBytes(&msg, "IN"));
+    ASSERT_TRUE(t->GetBytes(&hash_bytes, "HASH"));
+    ASSERT_EQ(16u, key.size());
+    ASSERT_EQ(8u, hash_bytes.size());
+    uint64_t hash = CRYPTO_load_u64_le(hash_bytes.data());
+
+    uint64_t key_words[2];
+    memcpy(key_words, key.data(), key.size());
+    uint64_t result = SIPHASH_24(key_words, msg.data(), msg.size());
+    EXPECT_EQ(result, hash);
+  });
+}