| /* Copyright (c) 2015, Google Inc. |
| * |
| * Permission to use, copy, modify, and/or distribute this software for any |
| * purpose with or without fee is hereby granted, provided that the above |
| * copyright notice and this permission notice appear in all copies. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
| * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
| * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY |
| * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION |
| * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN |
| * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ |
| |
| #include <stdint.h> |
| #include <stdio.h> |
| #include <string.h> |
| |
| #include <openssl/curve25519.h> |
| |
| #include "../internal.h" |
| |
| |
| static bool TestX25519() { |
| /* Taken from https://tools.ietf.org/html/rfc7748#section-5.2 */ |
| static const uint8_t kScalar1[32] = { |
| 0xa5, 0x46, 0xe3, 0x6b, 0xf0, 0x52, 0x7c, 0x9d, 0x3b, 0x16, 0x15, |
| 0x4b, 0x82, 0x46, 0x5e, 0xdd, 0x62, 0x14, 0x4c, 0x0a, 0xc1, 0xfc, |
| 0x5a, 0x18, 0x50, 0x6a, 0x22, 0x44, 0xba, 0x44, 0x9a, 0xc4, |
| }; |
| static const uint8_t kPoint1[32] = { |
| 0xe6, 0xdb, 0x68, 0x67, 0x58, 0x30, 0x30, 0xdb, 0x35, 0x94, 0xc1, |
| 0xa4, 0x24, 0xb1, 0x5f, 0x7c, 0x72, 0x66, 0x24, 0xec, 0x26, 0xb3, |
| 0x35, 0x3b, 0x10, 0xa9, 0x03, 0xa6, 0xd0, 0xab, 0x1c, 0x4c, |
| }; |
| |
| uint8_t out[32]; |
| X25519(out, kScalar1, kPoint1); |
| |
| static const uint8_t kExpected1[32] = { |
| 0xc3, 0xda, 0x55, 0x37, 0x9d, 0xe9, 0xc6, 0x90, 0x8e, 0x94, 0xea, |
| 0x4d, 0xf2, 0x8d, 0x08, 0x4f, 0x32, 0xec, 0xcf, 0x03, 0x49, 0x1c, |
| 0x71, 0xf7, 0x54, 0xb4, 0x07, 0x55, 0x77, 0xa2, 0x85, 0x52, |
| }; |
| if (OPENSSL_memcmp(kExpected1, out, sizeof(out)) != 0) { |
| fprintf(stderr, "X25519 test one failed.\n"); |
| return false; |
| } |
| |
| static const uint8_t kScalar2[32] = { |
| 0x4b, 0x66, 0xe9, 0xd4, 0xd1, 0xb4, 0x67, 0x3c, 0x5a, 0xd2, 0x26, |
| 0x91, 0x95, 0x7d, 0x6a, 0xf5, 0xc1, 0x1b, 0x64, 0x21, 0xe0, 0xea, |
| 0x01, 0xd4, 0x2c, 0xa4, 0x16, 0x9e, 0x79, 0x18, 0xba, 0x0d, |
| }; |
| static const uint8_t kPoint2[32] = { |
| 0xe5, 0x21, 0x0f, 0x12, 0x78, 0x68, 0x11, 0xd3, 0xf4, 0xb7, 0x95, |
| 0x9d, 0x05, 0x38, 0xae, 0x2c, 0x31, 0xdb, 0xe7, 0x10, 0x6f, 0xc0, |
| 0x3c, 0x3e, 0xfc, 0x4c, 0xd5, 0x49, 0xc7, 0x15, 0xa4, 0x93, |
| }; |
| |
| X25519(out, kScalar2, kPoint2); |
| |
| static const uint8_t kExpected2[32] = { |
| 0x95, 0xcb, 0xde, 0x94, 0x76, 0xe8, 0x90, 0x7d, 0x7a, 0xad, 0xe4, |
| 0x5c, 0xb4, 0xb8, 0x73, 0xf8, 0x8b, 0x59, 0x5a, 0x68, 0x79, 0x9f, |
| 0xa1, 0x52, 0xe6, 0xf8, 0xf7, 0x64, 0x7a, 0xac, 0x79, 0x57, |
| }; |
| if (OPENSSL_memcmp(kExpected2, out, sizeof(out)) != 0) { |
| fprintf(stderr, "X25519 test two failed.\n"); |
| return false; |
| } |
| |
| return true; |
| } |
| |
| static bool TestX25519SmallOrder() { |
| 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]; |
| OPENSSL_memset(private_key, 0x11, sizeof(private_key)); |
| |
| if (X25519(out, private_key, kSmallOrderPoint)) { |
| fprintf(stderr, "X25519 returned success with a small-order input.\n"); |
| return false; |
| } |
| |
| return true; |
| } |
| |
| static bool TestX25519Iterated() { |
| /* Taken from https://tools.ietf.org/html/rfc7748#section-5.2 */ |
| uint8_t scalar[32] = {9}, point[32] = {9}, out[32]; |
| |
| unsigned i; |
| for (i = 0; i < 1000; i++) { |
| X25519(out, scalar, point); |
| OPENSSL_memcpy(point, scalar, sizeof(point)); |
| OPENSSL_memcpy(scalar, out, sizeof(scalar)); |
| } |
| |
| static const uint8_t kExpected[32] = { |
| 0x68, 0x4c, 0xf5, 0x9b, 0xa8, 0x33, 0x09, 0x55, 0x28, 0x00, 0xef, |
| 0x56, 0x6f, 0x2f, 0x4d, 0x3c, 0x1c, 0x38, 0x87, 0xc4, 0x93, 0x60, |
| 0xe3, 0x87, 0x5f, 0x2e, 0xb9, 0x4d, 0x99, 0x53, 0x2c, 0x51, |
| }; |
| |
| if (OPENSSL_memcmp(kExpected, scalar, sizeof(kExpected)) != 0) { |
| fprintf(stderr, "Iterated X25519 test failed\n"); |
| return false; |
| } |
| |
| return true; |
| } |
| |
| int main(int argc, char **argv) { |
| if (!TestX25519() || |
| !TestX25519Iterated() || |
| !TestX25519SmallOrder()) { |
| return 1; |
| } |
| |
| printf("PASS\n"); |
| return 0; |
| } |