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0bcb8184 | 1 | /* |
a4c6c9ba | 2 | * xdh-test.c: test harness for elliptic-curve Diffie--Hellman |
0bcb8184 MW |
3 | * |
4 | * (The implementations originally came with different test arrangements, | |
5 | * with complicated external dependencies. This file replicates the original | |
6 | * tests, but without the dependencies.) | |
7 | */ | |
8 | /* | |
9 | * This file is Free Software. It was originally written for secnet. | |
10 | * | |
11 | * Copyright 2017 Mark Wooding | |
12 | * | |
13 | * You may redistribute secnet as a whole and/or modify it under the | |
14 | * terms of the GNU General Public License as published by the Free | |
15 | * Software Foundation; either version 3, or (at your option) any | |
16 | * later version. | |
17 | * | |
18 | * You may redistribute this file and/or modify it under the terms of | |
19 | * the GNU General Public License as published by the Free Software | |
20 | * Foundation; either version 2, or (at your option) any later | |
21 | * version. | |
22 | * | |
23 | * This software is distributed in the hope that it will be useful, | |
24 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
25 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
26 | * GNU General Public License for more details. | |
27 | * | |
28 | * You should have received a copy of the GNU General Public License | |
29 | * along with this software; if not, see | |
30 | * https://www.gnu.org/licenses/gpl.html. | |
31 | */ | |
32 | ||
0bcb8184 | 33 | #include <stdio.h> |
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34 | |
35 | #include "secnet.h" | |
36 | ||
0bcb8184 MW |
37 | #include "x25519.h" |
38 | #include "x448.h" | |
39 | ||
a4c6c9ba MW |
40 | #define x25519_KEYSZ X25519_KEYSZ |
41 | #define x448_KEYSZ X448_KEYSZ | |
42 | ||
0bcb8184 MW |
43 | #define GLUE(x, y) GLUE_(x, y) |
44 | #define GLUE_(x, y) x##y | |
a4c6c9ba | 45 | #define XDHOP(op) GLUE(XDH, _##op) |
0bcb8184 | 46 | |
a4c6c9ba MW |
47 | #define REG_MEMBERS \ |
48 | uint8_t k[XDHOP(KEYSZ)]; | |
49 | #include "crypto-test.h" | |
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50 | |
51 | enum { | |
a4c6c9ba MW |
52 | RZ, NROUT, |
53 | RN = NROUT, RX, RY, NREG | |
0bcb8184 MW |
54 | }; |
55 | ||
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56 | static void parse_key(union regval *v, char *p) |
57 | { parse_hex(v->k, sizeof(v->k), p); } | |
0bcb8184 | 58 | |
a4c6c9ba MW |
59 | static void dump_key(FILE *fp, const union regval *v) |
60 | { dump_hex(fp, v->k, sizeof(v->k)); } | |
0bcb8184 | 61 | |
a4c6c9ba MW |
62 | static int eq_key(const union regval *v0, const union regval *v1) |
63 | { return (memcmp(v0->k, v1->k, sizeof(v0->k)) == 0); } | |
0bcb8184 | 64 | |
a4c6c9ba MW |
65 | static const struct regty regty_key = { |
66 | trivial_regty_init, | |
67 | parse_key, | |
68 | dump_key, | |
69 | eq_key, | |
70 | trivial_regty_release | |
71 | }; | |
0bcb8184 | 72 | |
a4c6c9ba MW |
73 | static void test_xdh(struct reg *out, const struct reg *in, void *ctx) |
74 | { XDH(out[RZ].v.k, in[RX].v.k, in[RY].v.k); } | |
0bcb8184 | 75 | |
a4c6c9ba | 76 | static void test_xdhmct(struct reg *out, const struct reg *in, void *ctx) |
0bcb8184 | 77 | { |
a4c6c9ba | 78 | uint8_t b0[XDHOP(KEYSZ)], b1[XDHOP(KEYSZ)], *x = b0, *y = b1, *t; |
0bcb8184 MW |
79 | unsigned long i, n; |
80 | ||
a4c6c9ba MW |
81 | memcpy(b0, in[RX].v.k, sizeof(b0)); |
82 | memcpy(b1, in[RY].v.k, sizeof(b1)); | |
83 | n = in[RN].v.u; | |
0bcb8184 | 84 | for (i = 0; i < n; i++) { |
a4c6c9ba MW |
85 | XDH(y, x, y); |
86 | t = y; y = x; x = t; | |
0bcb8184 | 87 | } |
a4c6c9ba | 88 | memcpy(out[RZ].v.k, x, sizeof(b0)); |
0bcb8184 | 89 | } |
a4c6c9ba MW |
90 | #define REG_X { "x", RX, ®ty_key, 0 } |
91 | #define REG_Y { "Y", RY, ®ty_key, 0 } | |
92 | #define REG_Z { "Z", RZ, ®ty_key, 0 } | |
93 | #define REG_N { "n", RN, ®ty_uint, 0 } | |
0bcb8184 | 94 | static const struct regdef |
a4c6c9ba MW |
95 | xdh_regs[] = { REG_X, REG_Y, REG_Z, REGLIST_END }, |
96 | xdhmct_regs[] = { REG_X, REG_Y, REG_N, REG_Z, REGLIST_END }; | |
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97 | |
98 | static const struct test tests[] = { | |
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99 | { STRING(XDH), run_test, xdh_regs, test_xdh }, |
100 | { STRING(XDH) "-mct", run_test, xdhmct_regs, test_xdhmct }, | |
0bcb8184 MW |
101 | { 0 } |
102 | }; | |
103 | ||
0bcb8184 | 104 | int main(void) |
a4c6c9ba | 105 | { return run_test_suite(NROUT, NREG, sizeof(struct reg), tests, stdin); } |