1/*	$NetBSD: t_sha512trunc.c,v 1.2 2024/03/15 18:10:37 riastradh Exp $	*/
2
3/*-
4 * Copyright (c) 2024 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
17 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
18 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
19 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
20 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
26 * POSSIBILITY OF SUCH DAMAGE.
27 */
28
29#include <sys/cdefs.h>
30__RCSID("$NetBSD: t_sha512trunc.c,v 1.2 2024/03/15 18:10:37 riastradh Exp $");
31
32#include <stddef.h>
33
34#include <atf-c.h>
35
36#include <openssl/evp.h>
37
38#include "h_macros.h"
39
40struct testcase {
41	const unsigned char in[128];
42	size_t inlen;
43	const unsigned char out[32];
44};
45
46static void
47check(const struct testcase *C, size_t n, size_t digestlen, const EVP_MD *md)
48{
49	enum { C0 = 0xc0, C1 = 0xc1 };
50	unsigned char *buf, *digest, *p0, *p1;
51	size_t i;
52
53	ATF_REQUIRE_MSG(digestlen <= INT_MAX, "digestlen=%zu", digestlen);
54	ATF_REQUIRE_EQ_MSG((int)digestlen, EVP_MD_size(md),
55	    "expected %d, got %d", (int)digestlen, EVP_MD_size(md));
56
57	ATF_REQUIRE_MSG(digestlen < SIZE_MAX - 2048,
58	    "digestlen=%zu", digestlen);
59	REQUIRE_LIBC(buf = malloc(digestlen + 2048), NULL);
60	p0 = buf;
61	digest = buf + 1;
62	p1 = buf + 1 + digestlen;
63
64	for (i = 0; i < n; i++) {
65		EVP_MD_CTX *ctx;
66		unsigned digestlen1;
67
68		*p0 = C0;
69		*p1 = C1;
70
71#define	REQUIRE(x)	ATF_REQUIRE_MSG((x), "i=%zu", i)
72		REQUIRE(ctx = EVP_MD_CTX_new());
73		REQUIRE(EVP_DigestInit_ex(ctx, md, NULL));
74		REQUIRE(EVP_DigestUpdate(ctx, C->in, C->inlen));
75		REQUIRE(EVP_DigestFinal_ex(ctx, digest, &digestlen1));
76#undef	REQUIRE
77		ATF_CHECK_MSG(digestlen == digestlen1,
78		    "i=%zu: expected %zu got %u", i, digestlen, digestlen1);
79		EVP_MD_CTX_free(ctx);
80
81		ATF_CHECK_MSG(memcmp(digest, C->out, digestlen) == 0,
82		    "i=%zu", i);
83
84		ATF_CHECK_EQ_MSG(*p0, C0, "expected 0x%x got 0x%hhx", C0, *p0);
85		ATF_CHECK_EQ_MSG(*p1, C1, "expected 0x%x got 0x%hhx", C1, *p1);
86	}
87}
88
89/*
90 * Test vectors from:
91 *
92 * https://csrc.nist.gov/Projects/Cryptographic-Algorithm-Validation-Program/Secure-Hashing#Testing
93 */
94
95ATF_TC(sha512_224);
96ATF_TC_HEAD(sha512_224, tc)
97{
98	atf_tc_set_md_var(tc, "descr", "Test SHA512-224");
99}
100ATF_TC_BODY(sha512_224, tc)
101{
102	static const struct testcase C[] = {
103		[0] = {
104			.inlen = 0,
105			.out = {
106				0x6e,0xd0,0xdd,0x02, 0x80,0x6f,0xa8,0x9e,
107				0x25,0xde,0x06,0x0c, 0x19,0xd3,0xac,0x86,
108				0xca,0xbb,0x87,0xd6, 0xa0,0xdd,0xd0,0x5c,
109				0x33,0x3b,0x84,0xf4,
110			},
111		},
112		[1] = {
113			.inlen = 1,
114			.in = {
115				0xcf,
116			},
117			.out = {
118				0x41,0x99,0x23,0x9e, 0x87,0xd4,0x7b,0x6f,
119				0xed,0xa0,0x16,0x80, 0x2b,0xf3,0x67,0xfb,
120				0x6e,0x8b,0x56,0x55, 0xef,0xf6,0x22,0x5c,
121				0xb2,0x66,0x8f,0x4a,
122			},
123		},
124	};
125
126	check(C, __arraycount(C), 28, EVP_sha512_224());
127}
128
129ATF_TC(sha512_256);
130ATF_TC_HEAD(sha512_256, tc)
131{
132	atf_tc_set_md_var(tc, "descr", "Test SHA512-256");
133}
134ATF_TC_BODY(sha512_256, tc)
135{
136	static const struct testcase C[] = {
137		[0] = {
138			.inlen = 0,
139			.out = {
140				0xc6,0x72,0xb8,0xd1, 0xef,0x56,0xed,0x28,
141				0xab,0x87,0xc3,0x62, 0x2c,0x51,0x14,0x06,
142				0x9b,0xdd,0x3a,0xd7, 0xb8,0xf9,0x73,0x74,
143				0x98,0xd0,0xc0,0x1e, 0xce,0xf0,0x96,0x7a,
144			},
145		},
146		[1] = {
147			.inlen = 1,
148			.in = {
149				0xfa,
150			},
151			.out = {
152				0xc4,0xef,0x36,0x92, 0x3c,0x64,0xe5,0x1e,
153				0x87,0x57,0x20,0xe5, 0x50,0x29,0x8a,0x5a,
154				0xb8,0xa3,0xf2,0xf8, 0x75,0xb1,0xe1,0xa4,
155				0xc9,0xb9,0x5b,0xab, 0xf7,0x34,0x4f,0xef,
156			},
157		},
158	};
159
160	check(C, __arraycount(C), 32, EVP_sha512_256());
161}
162
163ATF_TP_ADD_TCS(tp)
164{
165
166	ATF_TP_ADD_TC(tp, sha512_224);
167	ATF_TP_ADD_TC(tp, sha512_256);
168
169	return atf_no_error();
170}
171