Squashed 'external/toxcore/c-toxcore/' content from commit 67badf69

git-subtree-dir: external/toxcore/c-toxcore
git-subtree-split: 67badf69416a74e74f6d7eb51dd96f37282b8455

toxcore/crypto_core_test.cc

@@ -0,0 +1,97 @@
+#include "crypto_core.h"
+
+#include <gtest/gtest.h>
+
+#include <algorithm>
+#include <array>
+#include <vector>
+
+#include "util.h"
+
+namespace {
+
+using HmacKey = std::array<uint8_t, CRYPTO_HMAC_KEY_SIZE>;
+using Hmac = std::array<uint8_t, CRYPTO_HMAC_SIZE>;
+using ExtPublicKey = std::array<uint8_t, EXT_PUBLIC_KEY_SIZE>;
+using ExtSecretKey = std::array<uint8_t, EXT_SECRET_KEY_SIZE>;
+using Signature = std::array<uint8_t, CRYPTO_SIGNATURE_SIZE>;
+using Nonce = std::array<uint8_t, CRYPTO_NONCE_SIZE>;
+
+TEST(CryptoCore, IncrementNonce)
+{
+    Nonce nonce{};
+    increment_nonce(nonce.data());
+    EXPECT_EQ(
+        nonce, (Nonce{{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1}}));
+
+    for (int i = 0; i < 0x1F4; ++i) {
+        increment_nonce(nonce.data());
+    }
+
+    EXPECT_EQ(nonce,
+        (Nonce{{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x01, 0xF5}}));
+}
+
+TEST(CryptoCore, IncrementNonceNumber)
+{
+    Nonce nonce{};
+
+    increment_nonce_number(nonce.data(), 0x1F5);
+    EXPECT_EQ(nonce,
+        (Nonce{{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x01, 0xF5}}));
+
+    increment_nonce_number(nonce.data(), 0x1F5);
+    EXPECT_EQ(nonce,
+        (Nonce{{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x03, 0xEA}}));
+
+    increment_nonce_number(nonce.data(), 0x12345678);
+    EXPECT_EQ(nonce,
+        (Nonce{
+            {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x12, 0x34, 0x5A, 0x62}}));
+}
+
+TEST(CryptoCore, Signatures)
+{
+    const Random *rng = system_random();
+    ASSERT_NE(rng, nullptr);
+
+    ExtPublicKey pk;
+    ExtSecretKey sk;
+
+    EXPECT_TRUE(create_extended_keypair(pk.data(), sk.data()));
+
+    std::vector<uint8_t> message;
+
+    // Try a few different sizes, including empty 0 length message.
+    for (uint8_t i = 0; i < 100; ++i) {
+        Signature signature;
+        EXPECT_TRUE(crypto_signature_create(
+            signature.data(), message.data(), message.size(), get_sig_sk(sk.data())));
+        EXPECT_TRUE(crypto_signature_verify(
+            signature.data(), message.data(), message.size(), get_sig_pk(pk.data())));
+
+        message.push_back(random_u08(rng));
+    }
+}
+
+TEST(CryptoCore, Hmac)
+{
+    const Random *rng = system_random();
+    ASSERT_NE(rng, nullptr);
+
+    HmacKey sk;
+    new_hmac_key(rng, sk.data());
+
+    std::vector<uint8_t> message;
+
+    // Try a few different sizes, including empty 0 length message.
+    for (uint8_t i = 0; i < 100; ++i) {
+        Hmac auth;
+        crypto_hmac(auth.data(), sk.data(), message.data(), message.size());
+        EXPECT_TRUE(crypto_hmac_verify(auth.data(), sk.data(), message.data(), message.size()));
+
+        message.push_back(random_u08(rng));
+    }
+}
+
+}  // namespace