Robert Sloan | 572a4e2 | 2017-04-17 10:52:19 -0700 | [diff] [blame] | 1 | /* Copyright (c) 2017, 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 <gtest/gtest.h> |
| 16 | |
| 17 | #include <openssl/rand.h> |
| 18 | #include <openssl/sha.h> |
| 19 | |
| 20 | #include "internal.h" |
Robert Sloan | 9254e68 | 2017-04-24 09:42:06 -0700 | [diff] [blame] | 21 | #include "../../test/test_util.h" |
Robert Sloan | 572a4e2 | 2017-04-17 10:52:19 -0700 | [diff] [blame] | 22 | |
| 23 | |
| 24 | TEST(CTRDRBGTest, Basic) { |
| 25 | const uint8_t kSeed[CTR_DRBG_ENTROPY_LEN] = { |
| 26 | 0xe4, 0xbc, 0x23, 0xc5, 0x08, 0x9a, 0x19, 0xd8, 0x6f, 0x41, 0x19, 0xcb, |
| 27 | 0x3f, 0xa0, 0x8c, 0x0a, 0x49, 0x91, 0xe0, 0xa1, 0xde, 0xf1, 0x7e, 0x10, |
| 28 | 0x1e, 0x4c, 0x14, 0xd9, 0xc3, 0x23, 0x46, 0x0a, 0x7c, 0x2f, 0xb5, 0x8e, |
| 29 | 0x0b, 0x08, 0x6c, 0x6c, 0x57, 0xb5, 0x5f, 0x56, 0xca, 0xe2, 0x5b, 0xad, |
| 30 | }; |
| 31 | |
| 32 | CTR_DRBG_STATE drbg; |
| 33 | ASSERT_TRUE(CTR_DRBG_init(&drbg, kSeed, nullptr, 0)); |
| 34 | |
| 35 | const uint8_t kReseed[CTR_DRBG_ENTROPY_LEN] = { |
| 36 | 0xfd, 0x85, 0xa8, 0x36, 0xbb, 0xa8, 0x50, 0x19, 0x88, 0x1e, 0x8c, 0x6b, |
| 37 | 0xad, 0x23, 0xc9, 0x06, 0x1a, 0xdc, 0x75, 0x47, 0x76, 0x59, 0xac, 0xae, |
| 38 | 0xa8, 0xe4, 0xa0, 0x1d, 0xfe, 0x07, 0xa1, 0x83, 0x2d, 0xad, 0x1c, 0x13, |
| 39 | 0x6f, 0x59, 0xd7, 0x0f, 0x86, 0x53, 0xa5, 0xdc, 0x11, 0x86, 0x63, 0xd6, |
| 40 | }; |
| 41 | |
| 42 | ASSERT_TRUE(CTR_DRBG_reseed(&drbg, kReseed, nullptr, 0)); |
| 43 | |
| 44 | uint8_t out[64]; |
| 45 | ASSERT_TRUE(CTR_DRBG_generate(&drbg, out, sizeof(out), nullptr, 0)); |
| 46 | ASSERT_TRUE(CTR_DRBG_generate(&drbg, out, sizeof(out), nullptr, 0)); |
| 47 | |
| 48 | const uint8_t kExpected[64] = { |
| 49 | 0xb2, 0xcb, 0x89, 0x05, 0xc0, 0x5e, 0x59, 0x50, 0xca, 0x31, 0x89, |
| 50 | 0x50, 0x96, 0xbe, 0x29, 0xea, 0x3d, 0x5a, 0x3b, 0x82, 0xb2, 0x69, |
| 51 | 0x49, 0x55, 0x54, 0xeb, 0x80, 0xfe, 0x07, 0xde, 0x43, 0xe1, 0x93, |
| 52 | 0xb9, 0xe7, 0xc3, 0xec, 0xe7, 0x3b, 0x80, 0xe0, 0x62, 0xb1, 0xc1, |
| 53 | 0xf6, 0x82, 0x02, 0xfb, 0xb1, 0xc5, 0x2a, 0x04, 0x0e, 0xa2, 0x47, |
| 54 | 0x88, 0x64, 0x29, 0x52, 0x82, 0x23, 0x4a, 0xaa, 0xda, |
| 55 | }; |
| 56 | |
| 57 | EXPECT_EQ(Bytes(kExpected), Bytes(out)); |
| 58 | |
| 59 | CTR_DRBG_clear(&drbg); |
| 60 | } |
| 61 | |
| 62 | TEST(CTRDRBGTest, Large) { |
| 63 | const uint8_t kSeed[CTR_DRBG_ENTROPY_LEN] = {0}; |
| 64 | |
| 65 | CTR_DRBG_STATE drbg; |
| 66 | ASSERT_TRUE(CTR_DRBG_init(&drbg, kSeed, nullptr, 0)); |
| 67 | |
| 68 | std::unique_ptr<uint8_t[]> buf(new uint8_t[CTR_DRBG_MAX_GENERATE_LENGTH]); |
| 69 | ASSERT_TRUE(CTR_DRBG_generate(&drbg, buf.get(), CTR_DRBG_MAX_GENERATE_LENGTH, |
| 70 | nullptr, 0)); |
| 71 | |
| 72 | uint8_t digest[SHA256_DIGEST_LENGTH]; |
| 73 | SHA256(buf.get(), CTR_DRBG_MAX_GENERATE_LENGTH, digest); |
| 74 | |
| 75 | const uint8_t kExpected[SHA256_DIGEST_LENGTH] = { |
| 76 | 0x69, 0x78, 0x15, 0x96, 0xca, 0xc0, 0x3f, 0x6a, 0x6d, 0xed, 0x22, |
| 77 | 0x1e, 0x26, 0xd0, 0x75, 0x49, 0xa0, 0x4b, 0x91, 0x58, 0x3c, 0xf4, |
| 78 | 0xe3, 0x6d, 0xff, 0x41, 0xbf, 0xb9, 0xf8, 0xa8, 0x1c, 0x2b, |
| 79 | }; |
| 80 | EXPECT_EQ(Bytes(kExpected), Bytes(digest)); |
| 81 | |
| 82 | CTR_DRBG_clear(&drbg); |
| 83 | } |