diff options
Diffstat (limited to 'crypto/curve25519_unittest.cc')
| -rw-r--r-- | crypto/curve25519_unittest.cc | 25 |
1 files changed, 19 insertions, 6 deletions
diff --git a/crypto/curve25519_unittest.cc b/crypto/curve25519_unittest.cc index 0ddc422..48144ba 100644 --- a/crypto/curve25519_unittest.cc +++ b/crypto/curve25519_unittest.cc @@ -17,28 +17,41 @@ namespace crypto { // public key and shared key for alice and bob. It asserts that alice and bob // have the same shared key. TEST(Curve25519, SharedKeyIdentity) { - uint8 alice_private_key[curve25519::kScalarBytes] = {3}; - uint8 bob_private_key[curve25519::kScalarBytes] = {5}; + uint8_t alice_private_key[curve25519::kScalarBytes] = {3}; + uint8_t bob_private_key[curve25519::kScalarBytes] = {5}; // Get public key for alice and bob. - uint8 alice_public_key[curve25519::kBytes]; + uint8_t alice_public_key[curve25519::kBytes]; curve25519::ScalarBaseMult(alice_private_key, alice_public_key); - uint8 bob_public_key[curve25519::kBytes]; + uint8_t bob_public_key[curve25519::kBytes]; curve25519::ScalarBaseMult(bob_private_key, bob_public_key); // Get the shared key for alice, by using alice's private key and bob's // public key. - uint8 alice_shared_key[curve25519::kBytes]; + uint8_t alice_shared_key[curve25519::kBytes]; curve25519::ScalarMult(alice_private_key, bob_public_key, alice_shared_key); // Get the shared key for bob, by using bob's private key and alice's public // key. - uint8 bob_shared_key[curve25519::kBytes]; + uint8_t bob_shared_key[curve25519::kBytes]; curve25519::ScalarMult(bob_private_key, alice_public_key, bob_shared_key); // Computed shared key of alice and bob should be the same. ASSERT_EQ(0, memcmp(alice_shared_key, bob_shared_key, curve25519::kBytes)); } +TEST(Curve25519, SmallOrder) { + static const uint8_t kSmallOrderPoint[32] = { + 0xe0, 0xeb, 0x7a, 0x7c, 0x3b, 0x41, 0xb8, 0xae, 0x16, 0x56, 0xe3, + 0xfa, 0xf1, 0x9f, 0xc4, 0x6a, 0xda, 0x09, 0x8d, 0xeb, 0x9c, 0x32, + 0xb1, 0xfd, 0x86, 0x62, 0x05, 0x16, 0x5f, 0x49, 0xb8, + }; + + uint8_t out[32], private_key[32]; + memset(private_key, 0x11, sizeof(private_key)); + + EXPECT_FALSE(curve25519::ScalarMult(private_key, kSmallOrderPoint, out)); +} + } // namespace crypto |