2 * xdh-test.c: test harness for elliptic-curve Diffie--Hellman
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.)
9 * This file is Free Software. It was originally written for secnet.
11 * Copyright 2017 Mark Wooding
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
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
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.
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.
40 #define x25519_KEYSZ X25519_KEYSZ
41 #define x448_KEYSZ X448_KEYSZ
43 #define GLUE(x, y) GLUE_(x, y)
44 #define GLUE_(x, y) x##y
45 #define XDHOP(op) GLUE(XDH, _##op)
48 uint8_t k[XDHOP(KEYSZ)];
49 #include "crypto-test.h"
53 RN
= NROUT
, RX
, RY
, NREG
56 static void parse_key(union regval
*v
, char *p
)
57 { parse_hex(v
->k
, sizeof(v
->k
), p
); }
59 static void dump_key(FILE *fp
, const union regval
*v
)
60 { dump_hex(fp
, v
->k
, sizeof(v
->k
)); }
62 static int eq_key(const union regval
*v0
, const union regval
*v1
)
63 { return (memcmp(v0
->k
, v1
->k
, sizeof(v0
->k
)) == 0); }
65 static const struct regty regty_key
= {
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
); }
76 static void test_xdhmct(struct reg
*out
, const struct reg
*in
, void *ctx
)
78 uint8_t b0
[XDHOP(KEYSZ
)], b1
[XDHOP(KEYSZ
)], *x
= b0
, *y
= b1
, *t
;
81 memcpy(b0
, in
[RX
].v
.k
, sizeof(b0
));
82 memcpy(b1
, in
[RY
].v
.k
, sizeof(b1
));
84 for (i
= 0; i
< n
; i
++) {
88 memcpy(out
[RZ
].v
.k
, x
, sizeof(b0
));
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 }
94 static const struct regdef
95 xdh_regs
[] = { REG_X
, REG_Y
, REG_Z
, REGLIST_END
},
96 xdhmct_regs
[] = { REG_X
, REG_Y
, REG_N
, REG_Z
, REGLIST_END
};
98 static const struct test tests
[] = {
99 { STRING(XDH
), run_test
, xdh_regs
, test_xdh
},
100 { STRING(XDH
) "-mct", run_test
, xdhmct_regs
, test_xdhmct
},
105 { return run_test_suite(NROUT
, NREG
, sizeof(struct reg
), tests
, stdin
); }