md5.c revision 114589 
1/*
2 * Derived from:
3 *
4 * MDDRIVER.C - test driver for MD2, MD4 and MD5
5 */
6
7/*
8 *  Copyright (C) 1990-2, RSA Data Security, Inc. Created 1990. All
9 *  rights reserved.
10 *
11 *  RSA Data Security, Inc. makes no representations concerning either
12 *  the merchantability of this software or the suitability of this
13 *  software for any particular purpose. It is provided "as is"
14 *  without express or implied warranty of any kind.
15 *
16 *  These notices must be retained in any copies of any part of this
17 *  documentation and/or software.
18 */
19
20#include <sys/cdefs.h>
21__FBSDID("$FreeBSD: head/sbin/md5/md5.c 114589 2003-05-03 18:41:59Z obrien $");
22
23#include <sys/types.h>
24#include <sys/time.h>
25#include <sys/resource.h>
26#include <err.h>
27#include <md5.h>
28#include <stdio.h>
29#include <stdlib.h>
30#include <string.h>
31#include <time.h>
32#include <unistd.h>
33
34/*
35 * Length of test block, number of test blocks.
36 */
37#define TEST_BLOCK_LEN 10000
38#define TEST_BLOCK_COUNT 100000
39
40int qflag;
41int rflag;
42int sflag;
43
44static void MDString(const char *);
45static void MDTimeTrial(void);
46static void MDTestSuite(void);
47static void MDFilter(int);
48static void usage(void);
49
50/* Main driver.
51
52Arguments (may be any combination):
53  -sstring - digests string
54  -t       - runs time trial
55  -x       - runs test script
56  filename - digests file
57  (none)   - digests standard input
58 */
59int
60main(int argc, char *argv[])
61{
62	int     ch;
63	char   *p;
64	char	buf[33];
65
66	while ((ch = getopt(argc, argv, "pqrs:tx")) != -1)
67		switch (ch) {
68		case 'p':
69			MDFilter(1);
70			break;
71		case 'q':
72			qflag = 1;
73			break;
74		case 'r':
75			rflag = 1;
76			break;
77		case 's':
78			sflag = 1;
79			MDString(optarg);
80			break;
81		case 't':
82			MDTimeTrial();
83			break;
84		case 'x':
85			MDTestSuite();
86			break;
87		default:
88			usage();
89		}
90	argc -= optind;
91	argv += optind;
92
93	if (*argv) {
94		do {
95			p = MD5File(*argv, buf);
96			if (!p)
97				warn("%s", *argv);
98			else
99				if (qflag)
100					printf("%s\n", p);
101				else if (rflag)
102					printf("%s %s\n", p, *argv);
103				else
104					printf("MD5 (%s) = %s\n", *argv, p);
105		} while (*++argv);
106	} else if (!sflag && (optind == 1 || qflag || rflag))
107		MDFilter(0);
108
109	return (0);
110}
111/*
112 * Digests a string and prints the result.
113 */
114static void
115MDString(const char *string)
116{
117	size_t len = strlen(string);
118	char buf[33];
119
120	if (qflag)
121		printf("%s\n", MD5Data(string, len, buf));
122	else if (rflag)
123		printf("%s \"%s\"\n", MD5Data(string, len, buf), string);
124	else
125		printf("MD5 (\"%s\") = %s\n", string, MD5Data(string, len, buf));
126}
127/*
128 * Measures the time to digest TEST_BLOCK_COUNT TEST_BLOCK_LEN-byte blocks.
129 */
130static void
131MDTimeTrial(void)
132{
133	MD5_CTX context;
134	struct rusage before, after;
135	struct timeval total;
136	float seconds;
137	unsigned char block[TEST_BLOCK_LEN];
138	unsigned int i;
139	char   *p, buf[33];
140
141	printf
142	    ("MD5 time trial. Digesting %d %d-byte blocks ...",
143	    TEST_BLOCK_COUNT, TEST_BLOCK_LEN);
144	fflush(stdout);
145
146	/* Initialize block */
147	for (i = 0; i < TEST_BLOCK_LEN; i++)
148		block[i] = (unsigned char) (i & 0xff);
149
150	/* Start timer */
151	getrusage(0, &before);
152
153	/* Digest blocks */
154	MD5Init(&context);
155	for (i = 0; i < TEST_BLOCK_COUNT; i++)
156		MD5Update(&context, block, TEST_BLOCK_LEN);
157	p = MD5End(&context,buf);
158
159	/* Stop timer */
160	getrusage(0, &after);
161	timersub(&after.ru_utime, &before.ru_utime, &total);
162	seconds = total.tv_sec + (float) total.tv_usec / 1000000;
163
164	printf(" done\n");
165	printf("Digest = %s", p);
166	printf("\nTime = %f seconds\n", seconds);
167	printf
168	    ("Speed = %f bytes/second\n",
169	    (float) TEST_BLOCK_LEN * (float) TEST_BLOCK_COUNT / seconds);
170}
171/*
172 * Digests a reference suite of strings and prints the results.
173 */
174
175#define MD5TESTCOUNT 8
176
177char *MDTestInput[] = {
178	"",
179	"a",
180	"abc",
181	"message digest",
182	"abcdefghijklmnopqrstuvwxyz",
183	"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789",
184	"12345678901234567890123456789012345678901234567890123456789012345678901234567890",
185	"MD5 has not yet (2001-09-03) been broken, but sufficient attacks have been made that its security is in some doubt"
186};
187
188char *MDTestOutput[MD5TESTCOUNT] = {
189	"d41d8cd98f00b204e9800998ecf8427e",
190	"0cc175b9c0f1b6a831c399e269772661",
191	"900150983cd24fb0d6963f7d28e17f72",
192	"f96b697d7cb7938d525a2f31aaf161d0",
193	"c3fcd3d76192e4007dfb496cca67e13b",
194	"d174ab98d277d9f5a5611c2c9f419d9f",
195	"57edf4a22be3c955ac49da2e2107b67a",
196	"b50663f41d44d92171cb9976bc118538"
197};
198
199static void
200MDTestSuite(void)
201{
202	int i;
203	char buffer[33];
204
205	printf("MD5 test suite:\n");
206	for (i = 0; i < MD5TESTCOUNT; i++) {
207		MD5Data(MDTestInput[i], strlen(MDTestInput[i]), buffer);
208		printf("MD5 (\"%s\") = %s", MDTestInput[i], buffer);
209		if (strcmp(buffer, MDTestOutput[i]) == 0)
210			printf(" - verified correct\n");
211		else
212			printf(" - INCORRECT RESULT!\n");
213	}
214}
215
216/*
217 * Digests the standard input and prints the result.
218 */
219static void
220MDFilter(int tee)
221{
222	MD5_CTX context;
223	unsigned int len;
224	unsigned char buffer[BUFSIZ];
225	char buf[33];
226
227	MD5Init(&context);
228	while ((len = fread(buffer, 1, BUFSIZ, stdin))) {
229		if (tee && len != fwrite(buffer, 1, len, stdout))
230			err(1, "stdout");
231		MD5Update(&context, buffer, len);
232	}
233	printf("%s\n", MD5End(&context,buf));
234}
235
236static void
237usage(void)
238{
239
240	fprintf(stderr, "usage: md5 [-pqrtx] [-s string] [files ...]\n");
241	exit(1);
242}
243