1 /* Copyright (c) 2015, Google Inc. 2 * 3 * Permission to use, copy, modify, and/or distribute this software for any 4 * purpose with or without fee is hereby granted, provided that the above 5 * copyright notice and this permission notice appear in all copies. 6 * 7 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 8 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 9 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY 10 * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 11 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION 12 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN 13 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ 14 15 #include <stdint.h> 16 #include <string.h> 17 18 #include <gtest/gtest.h> 19 20 #include <openssl/curve25519.h> 21 22 #include "../internal.h" 23 #include "../test/file_test.h" 24 #include "../test/test_util.h" 25 26 27 TEST(Ed25519Test, TestVectors) { 28 FileTestGTest("crypto/curve25519/ed25519_tests.txt", [](FileTest *t) { 29 std::vector<uint8_t> private_key, public_key, message, expected_signature; 30 ASSERT_TRUE(t->GetBytes(&private_key, "PRIV")); 31 ASSERT_EQ(64u, private_key.size()); 32 ASSERT_TRUE(t->GetBytes(&public_key, "PUB")); 33 ASSERT_EQ(32u, public_key.size()); 34 ASSERT_TRUE(t->GetBytes(&message, "MESSAGE")); 35 ASSERT_TRUE(t->GetBytes(&expected_signature, "SIG")); 36 ASSERT_EQ(64u, expected_signature.size()); 37 38 uint8_t signature[64]; 39 ASSERT_TRUE(ED25519_sign(signature, message.data(), message.size(), 40 private_key.data())); 41 EXPECT_EQ(Bytes(expected_signature), Bytes(signature)); 42 EXPECT_TRUE(ED25519_verify(message.data(), message.size(), signature, 43 public_key.data())); 44 }); 45 } 46 47 TEST(Ed25519Test, Malleability) { 48 // https://tools.ietf.org/html/rfc8032#section-5.1.7 adds an additional test 49 // that s be in [0, order). This prevents someone from adding a multiple of 50 // order to s and obtaining a second valid signature for the same message. 51 static const uint8_t kMsg[] = {0x54, 0x65, 0x73, 0x74}; 52 static const uint8_t kSig[] = { 53 0x7c, 0x38, 0xe0, 0x26, 0xf2, 0x9e, 0x14, 0xaa, 0xbd, 0x05, 0x9a, 54 0x0f, 0x2d, 0xb8, 0xb0, 0xcd, 0x78, 0x30, 0x40, 0x60, 0x9a, 0x8b, 55 0xe6, 0x84, 0xdb, 0x12, 0xf8, 0x2a, 0x27, 0x77, 0x4a, 0xb0, 0x67, 56 0x65, 0x4b, 0xce, 0x38, 0x32, 0xc2, 0xd7, 0x6f, 0x8f, 0x6f, 0x5d, 57 0xaf, 0xc0, 0x8d, 0x93, 0x39, 0xd4, 0xee, 0xf6, 0x76, 0x57, 0x33, 58 0x36, 0xa5, 0xc5, 0x1e, 0xb6, 0xf9, 0x46, 0xb3, 0x1d, 59 }; 60 static const uint8_t kPub[] = { 61 0x7d, 0x4d, 0x0e, 0x7f, 0x61, 0x53, 0xa6, 0x9b, 0x62, 0x42, 0xb5, 62 0x22, 0xab, 0xbe, 0xe6, 0x85, 0xfd, 0xa4, 0x42, 0x0f, 0x88, 0x34, 63 0xb1, 0x08, 0xc3, 0xbd, 0xae, 0x36, 0x9e, 0xf5, 0x49, 0xfa, 64 }; 65 66 EXPECT_FALSE(ED25519_verify(kMsg, sizeof(kMsg), kSig, kPub)); 67 } 68 69 TEST(Ed25519Test, KeypairFromSeed) { 70 uint8_t public_key1[32], private_key1[64]; 71 ED25519_keypair(public_key1, private_key1); 72 73 uint8_t seed[32]; 74 OPENSSL_memcpy(seed, private_key1, sizeof(seed)); 75 76 uint8_t public_key2[32], private_key2[64]; 77 ED25519_keypair_from_seed(public_key2, private_key2, seed); 78 79 EXPECT_EQ(Bytes(public_key1), Bytes(public_key2)); 80 EXPECT_EQ(Bytes(private_key1), Bytes(private_key2)); 81 } 82
