16562Sphk/*
237421Scharnier * Derived from:
36562Sphk *
46562Sphk * MDDRIVER.C - test driver for MD2, MD4 and MD5
53995Spst */
63995Spst
76562Sphk/*
86562Sphk *  Copyright (C) 1990-2, RSA Data Security, Inc. Created 1990. All
96562Sphk *  rights reserved.
106562Sphk *
116562Sphk *  RSA Data Security, Inc. makes no representations concerning either
126562Sphk *  the merchantability of this software or the suitability of this
136562Sphk *  software for any particular purpose. It is provided "as is"
146562Sphk *  without express or implied warranty of any kind.
156562Sphk *
166562Sphk *  These notices must be retained in any copies of any part of this
176562Sphk *  documentation and/or software.
183995Spst */
193995Spst
20114589Sobrien#include <sys/cdefs.h>
21114589Sobrien__FBSDID("$FreeBSD: stable/10/sbin/md5/md5.c 314332 2017-02-27 10:40:39Z avg $");
2237421Scharnier
2319168Sbde#include <sys/types.h>
24110840Ssilby#include <sys/time.h>
25110840Ssilby#include <sys/resource.h>
2637421Scharnier#include <err.h>
2719168Sbde#include <md5.h>
28130351Seik#include <ripemd.h>
29130351Seik#include <sha.h>
30143334Scperciva#include <sha256.h>
31314327Savg#include <sha384.h>
32238964Sdelphij#include <sha512.h>
33314332Savg#include <sha512t.h>
343995Spst#include <stdio.h>
3578949Sdes#include <stdlib.h>
3678949Sdes#include <string.h>
373995Spst#include <time.h>
3832074Ssteve#include <unistd.h>
3919168Sbde
406562Sphk/*
416562Sphk * Length of test block, number of test blocks.
423995Spst */
4346226Skris#define TEST_BLOCK_LEN 10000
4446226Skris#define TEST_BLOCK_COUNT 100000
45130351Seik#define MDTESTCOUNT 8
463995Spst
47281513Sdelphijstatic int qflag;
48281513Sdelphijstatic int rflag;
49281513Sdelphijstatic int sflag;
50281513Sdelphijstatic char* checkAgainst;
51281513Sdelphijstatic int checksFailed;
5252949Sobrien
53130351Seiktypedef void (DIGEST_Init)(void *);
54130351Seiktypedef void (DIGEST_Update)(void *, const unsigned char *, size_t);
55130351Seiktypedef char *(DIGEST_End)(void *, char *);
563995Spst
57130351Seikextern const char *MD5TestOutput[MDTESTCOUNT];
58130351Seikextern const char *SHA1_TestOutput[MDTESTCOUNT];
59143334Scpercivaextern const char *SHA256_TestOutput[MDTESTCOUNT];
60314327Savgextern const char *SHA384_TestOutput[MDTESTCOUNT];
61238964Sdelphijextern const char *SHA512_TestOutput[MDTESTCOUNT];
62314332Savgextern const char *SHA512t256_TestOutput[MDTESTCOUNT];
63130351Seikextern const char *RIPEMD160_TestOutput[MDTESTCOUNT];
64130351Seik
65130351Seiktypedef struct Algorithm_t {
66130351Seik	const char *progname;
67130351Seik	const char *name;
68130351Seik	const char *(*TestOutput)[MDTESTCOUNT];
69130351Seik	DIGEST_Init *Init;
70130351Seik	DIGEST_Update *Update;
71130351Seik	DIGEST_End *End;
72154479Sphk	char *(*Data)(const void *, unsigned int, char *);
73130351Seik	char *(*File)(const char *, char *);
74130351Seik} Algorithm_t;
75130351Seik
76130351Seikstatic void MD5_Update(MD5_CTX *, const unsigned char *, size_t);
77281513Sdelphijstatic void MDString(const Algorithm_t *, const char *);
78281513Sdelphijstatic void MDTimeTrial(const Algorithm_t *);
79281513Sdelphijstatic void MDTestSuite(const Algorithm_t *);
80281513Sdelphijstatic void MDFilter(const Algorithm_t *, int);
81281513Sdelphijstatic void usage(const Algorithm_t *);
82130351Seik
83130351Seiktypedef union {
84130351Seik	MD5_CTX md5;
85130351Seik	SHA1_CTX sha1;
86143334Scperciva	SHA256_CTX sha256;
87314327Savg	SHA384_CTX sha384;
88238964Sdelphij	SHA512_CTX sha512;
89130351Seik	RIPEMD160_CTX ripemd160;
90130351Seik} DIGEST_CTX;
91130351Seik
92176095Sobrien/* max(MD5_DIGEST_LENGTH, SHA_DIGEST_LENGTH,
93238964Sdelphij	SHA256_DIGEST_LENGTH, SHA512_DIGEST_LENGTH,
94238964Sdelphij	RIPEMD160_DIGEST_LENGTH)*2+1 */
95238964Sdelphij#define HEX_DIGEST_LENGTH 129
96130351Seik
97130351Seik/* algorithm function table */
98130351Seik
99281513Sdelphijstatic const struct Algorithm_t Algorithm[] = {
100130351Seik	{ "md5", "MD5", &MD5TestOutput, (DIGEST_Init*)&MD5Init,
101130351Seik		(DIGEST_Update*)&MD5_Update, (DIGEST_End*)&MD5End,
102130351Seik		&MD5Data, &MD5File },
103130351Seik	{ "sha1", "SHA1", &SHA1_TestOutput, (DIGEST_Init*)&SHA1_Init,
104130351Seik		(DIGEST_Update*)&SHA1_Update, (DIGEST_End*)&SHA1_End,
105130351Seik		&SHA1_Data, &SHA1_File },
106143334Scperciva	{ "sha256", "SHA256", &SHA256_TestOutput, (DIGEST_Init*)&SHA256_Init,
107143334Scperciva		(DIGEST_Update*)&SHA256_Update, (DIGEST_End*)&SHA256_End,
108143334Scperciva		&SHA256_Data, &SHA256_File },
109314327Savg	{ "sha384", "SHA384", &SHA384_TestOutput, (DIGEST_Init*)&SHA384_Init,
110314327Savg		(DIGEST_Update*)&SHA384_Update, (DIGEST_End*)&SHA384_End,
111314327Savg		&SHA384_Data, &SHA384_File },
112238964Sdelphij	{ "sha512", "SHA512", &SHA512_TestOutput, (DIGEST_Init*)&SHA512_Init,
113238964Sdelphij		(DIGEST_Update*)&SHA512_Update, (DIGEST_End*)&SHA512_End,
114238964Sdelphij		&SHA512_Data, &SHA512_File },
115314332Savg	{ "sha512t256", "SHA512t256", &SHA512t256_TestOutput, (DIGEST_Init*)&SHA512_256_Init,
116314332Savg		(DIGEST_Update*)&SHA512_256_Update, (DIGEST_End*)&SHA512_256_End,
117314332Savg		&SHA512_256_Data, &SHA512_256_File },
118130351Seik	{ "rmd160", "RMD160", &RIPEMD160_TestOutput,
119130351Seik		(DIGEST_Init*)&RIPEMD160_Init, (DIGEST_Update*)&RIPEMD160_Update,
120130351Seik		(DIGEST_End*)&RIPEMD160_End, &RIPEMD160_Data, &RIPEMD160_File }
121130351Seik};
122130351Seik
123130351Seikstatic void
124130351SeikMD5_Update(MD5_CTX *c, const unsigned char *data, size_t len)
125130351Seik{
126130351Seik	MD5Update(c, data, len);
127130351Seik}
128130351Seik
1293995Spst/* Main driver.
1303995Spst
1313995SpstArguments (may be any combination):
1323995Spst  -sstring - digests string
1333995Spst  -t       - runs time trial
1343995Spst  -x       - runs test script
1353995Spst  filename - digests file
1363995Spst  (none)   - digests standard input
1373995Spst */
1386562Sphkint
13976988Srumain(int argc, char *argv[])
1403995Spst{
141176095Sobrien	int	ch;
1426562Sphk	char   *p;
143130351Seik	char	buf[HEX_DIGEST_LENGTH];
144176095Sobrien	int	failed;
145130351Seik 	unsigned	digest;
146130351Seik 	const char*	progname;
147176095Sobrien
148130351Seik 	if ((progname = strrchr(argv[0], '/')) == NULL)
149130351Seik 		progname = argv[0];
150130351Seik 	else
151130351Seik 		progname++;
152176095Sobrien
153130351Seik 	for (digest = 0; digest < sizeof(Algorithm)/sizeof(*Algorithm); digest++)
154130351Seik 		if (strcasecmp(Algorithm[digest].progname, progname) == 0)
155130351Seik 			break;
156176095Sobrien
157130918Seik 	if (digest == sizeof(Algorithm)/sizeof(*Algorithm))
158130351Seik 		digest = 0;
1593995Spst
160121914Sse	failed = 0;
161227488Seadler	checkAgainst = NULL;
162227488Seadler	checksFailed = 0;
163227488Seadler	while ((ch = getopt(argc, argv, "c:pqrs:tx")) != -1)
16476988Sru		switch (ch) {
165227488Seadler		case 'c':
166227488Seadler			checkAgainst = optarg;
167227488Seadler			break;
16876988Sru		case 'p':
169130351Seik			MDFilter(&Algorithm[digest], 1);
17076988Sru			break;
17176988Sru		case 'q':
17276988Sru			qflag = 1;
17376988Sru			break;
17476988Sru		case 'r':
17576988Sru			rflag = 1;
17676988Sru			break;
17776988Sru		case 's':
17888226Sphk			sflag = 1;
179130351Seik			MDString(&Algorithm[digest], optarg);
18076988Sru			break;
18176988Sru		case 't':
182130351Seik			MDTimeTrial(&Algorithm[digest]);
18376988Sru			break;
18476988Sru		case 'x':
185130351Seik			MDTestSuite(&Algorithm[digest]);
18676988Sru			break;
18776988Sru		default:
188130351Seik			usage(&Algorithm[digest]);
18932074Ssteve		}
19076988Sru	argc -= optind;
19176988Sru	argv += optind;
19276988Sru
19376988Sru	if (*argv) {
19476988Sru		do {
195130351Seik			p = Algorithm[digest].File(*argv, buf);
196121914Sse			if (!p) {
19776988Sru				warn("%s", *argv);
198121914Sse				failed++;
199121914Sse			} else {
20054109Sobrien				if (qflag)
201227488Seadler					printf("%s", p);
20254109Sobrien				else if (rflag)
203227488Seadler					printf("%s %s", p, *argv);
20452949Sobrien				else
205227488Seadler					printf("%s (%s) = %s",
206176095Sobrien					    Algorithm[digest].name, *argv, p);
207227488Seadler				if (checkAgainst && strcmp(checkAgainst,p))
208227488Seadler				{
209227488Seadler					checksFailed++;
210227488Seadler					if (!qflag)
211227488Seadler						printf(" [ Failed ]");
212227488Seadler				}
213227488Seadler				printf("\n");
214121914Sse			}
21576988Sru		} while (*++argv);
21688226Sphk	} else if (!sflag && (optind == 1 || qflag || rflag))
217130351Seik		MDFilter(&Algorithm[digest], 0);
2183995Spst
219121914Sse	if (failed != 0)
220121914Sse		return (1);
221227488Seadler	if (checksFailed != 0)
222227488Seadler		return (2);
223176095Sobrien
2246562Sphk	return (0);
2253995Spst}
2266562Sphk/*
2276562Sphk * Digests a string and prints the result.
2283995Spst */
2296562Sphkstatic void
230281513SdelphijMDString(const Algorithm_t *alg, const char *string)
2313995Spst{
23248953Sbillf	size_t len = strlen(string);
233130351Seik	char buf[HEX_DIGEST_LENGTH];
2343995Spst
235227488Seadler	alg->Data(string,len,buf);
23654109Sobrien	if (qflag)
237227488Seadler		printf("%s", buf);
23854109Sobrien	else if (rflag)
239227488Seadler		printf("%s \"%s\"", buf, string);
24052949Sobrien	else
241227488Seadler		printf("%s (\"%s\") = %s", alg->name, string, buf);
242227488Seadler	if (checkAgainst && strcmp(buf,checkAgainst))
243227488Seadler	{
244227488Seadler		checksFailed++;
245227488Seadler		if (!qflag)
246227488Seadler			printf(" [ failed ]");
247227488Seadler	}
248227488Seadler	printf("\n");
2493995Spst}
2506562Sphk/*
2516562Sphk * Measures the time to digest TEST_BLOCK_COUNT TEST_BLOCK_LEN-byte blocks.
2523995Spst */
2536562Sphkstatic void
254281513SdelphijMDTimeTrial(const Algorithm_t *alg)
2553995Spst{
256130351Seik	DIGEST_CTX context;
257110840Ssilby	struct rusage before, after;
258110840Ssilby	struct timeval total;
259110840Ssilby	float seconds;
2606725Sphk	unsigned char block[TEST_BLOCK_LEN];
2616562Sphk	unsigned int i;
262176095Sobrien	char *p, buf[HEX_DIGEST_LENGTH];
2633995Spst
264176095Sobrien	printf("%s time trial. Digesting %d %d-byte blocks ...",
265130351Seik	    alg->name, TEST_BLOCK_COUNT, TEST_BLOCK_LEN);
26646226Skris	fflush(stdout);
2673995Spst
2686562Sphk	/* Initialize block */
2696562Sphk	for (i = 0; i < TEST_BLOCK_LEN; i++)
2706562Sphk		block[i] = (unsigned char) (i & 0xff);
2713995Spst
2726562Sphk	/* Start timer */
273182672Skevlo	getrusage(RUSAGE_SELF, &before);
2743995Spst
2756562Sphk	/* Digest blocks */
276130351Seik	alg->Init(&context);
2776562Sphk	for (i = 0; i < TEST_BLOCK_COUNT; i++)
278130351Seik		alg->Update(&context, block, TEST_BLOCK_LEN);
279130351Seik	p = alg->End(&context, buf);
2803995Spst
2816562Sphk	/* Stop timer */
282182672Skevlo	getrusage(RUSAGE_SELF, &after);
283110840Ssilby	timersub(&after.ru_utime, &before.ru_utime, &total);
284110840Ssilby	seconds = total.tv_sec + (float) total.tv_usec / 1000000;
2853995Spst
2866562Sphk	printf(" done\n");
2876562Sphk	printf("Digest = %s", p);
288110840Ssilby	printf("\nTime = %f seconds\n", seconds);
289176095Sobrien	printf("Speed = %f bytes/second\n",
290110840Ssilby	    (float) TEST_BLOCK_LEN * (float) TEST_BLOCK_COUNT / seconds);
2913995Spst}
2926562Sphk/*
2936562Sphk * Digests a reference suite of strings and prints the results.
2943995Spst */
295109870Ssilby
296281513Sdelphijstatic const char *MDTestInput[MDTESTCOUNT] = {
297176095Sobrien	"",
298109870Ssilby	"a",
299109870Ssilby	"abc",
300109870Ssilby	"message digest",
301109870Ssilby	"abcdefghijklmnopqrstuvwxyz",
302109870Ssilby	"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789",
303109870Ssilby	"12345678901234567890123456789012345678901234567890123456789012345678901234567890",
304130351Seik	"MD5 has not yet (2001-09-03) been broken, but sufficient attacks have been made \
305130351Seikthat its security is in some doubt"
306109870Ssilby};
307109870Ssilby
308130351Seikconst char *MD5TestOutput[MDTESTCOUNT] = {
309109870Ssilby	"d41d8cd98f00b204e9800998ecf8427e",
310109870Ssilby	"0cc175b9c0f1b6a831c399e269772661",
311109870Ssilby	"900150983cd24fb0d6963f7d28e17f72",
312109870Ssilby	"f96b697d7cb7938d525a2f31aaf161d0",
313109870Ssilby	"c3fcd3d76192e4007dfb496cca67e13b",
314109870Ssilby	"d174ab98d277d9f5a5611c2c9f419d9f",
315109870Ssilby	"57edf4a22be3c955ac49da2e2107b67a",
316109870Ssilby	"b50663f41d44d92171cb9976bc118538"
317109870Ssilby};
318109870Ssilby
319130351Seikconst char *SHA1_TestOutput[MDTESTCOUNT] = {
320130351Seik	"da39a3ee5e6b4b0d3255bfef95601890afd80709",
321130351Seik	"86f7e437faa5a7fce15d1ddcb9eaeaea377667b8",
322130351Seik	"a9993e364706816aba3e25717850c26c9cd0d89d",
323130351Seik	"c12252ceda8be8994d5fa0290a47231c1d16aae3",
324130351Seik	"32d10c7b8cf96570ca04ce37f2a19d84240d3a89",
325130351Seik	"761c457bf73b14d27e9e9265c46f4b4dda11f940",
326130351Seik	"50abf5706a150990a08b2c5ea40fa0e585554732",
327130351Seik	"18eca4333979c4181199b7b4fab8786d16cf2846"
328130351Seik};
329130351Seik
330143334Scpercivaconst char *SHA256_TestOutput[MDTESTCOUNT] = {
331143334Scperciva	"e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
332143334Scperciva	"ca978112ca1bbdcafac231b39a23dc4da786eff8147c4e72b9807785afee48bb",
333143334Scperciva	"ba7816bf8f01cfea414140de5dae2223b00361a396177a9cb410ff61f20015ad",
334143334Scperciva	"f7846f55cf23e14eebeab5b4e1550cad5b509e3348fbc4efa3a1413d393cb650",
335143334Scperciva	"71c480df93d6ae2f1efad1447c66c9525e316218cf51fc8d9ed832f2daf18b73",
336143334Scperciva	"db4bfcbd4da0cd85a60c3c37d3fbd8805c77f15fc6b1fdfe614ee0a7c8fdb4c0",
337143334Scperciva	"f371bc4a311f2b009eef952dd83ca80e2b60026c8e935592d0f9c308453c813e",
338143334Scperciva	"e6eae09f10ad4122a0e2a4075761d185a272ebd9f5aa489e998ff2f09cbfdd9f"
339143334Scperciva};
340143334Scperciva
341314327Savgconst char *SHA384_TestOutput[MDTESTCOUNT] = {
342314327Savg	"38b060a751ac96384cd9327eb1b1e36a21fdb71114be07434c0cc7bf63f6e1da274edebfe76f65fbd51ad2f14898b95b",
343314327Savg	"54a59b9f22b0b80880d8427e548b7c23abd873486e1f035dce9cd697e85175033caa88e6d57bc35efae0b5afd3145f31",
344314327Savg	"cb00753f45a35e8bb5a03d699ac65007272c32ab0eded1631a8b605a43ff5bed8086072ba1e7cc2358baeca134c825a7",
345314327Savg	"473ed35167ec1f5d8e550368a3db39be54639f828868e9454c239fc8b52e3c61dbd0d8b4de1390c256dcbb5d5fd99cd5",
346314327Savg	"feb67349df3db6f5924815d6c3dc133f091809213731fe5c7b5f4999e463479ff2877f5f2936fa63bb43784b12f3ebb4",
347314327Savg	"1761336e3f7cbfe51deb137f026f89e01a448e3b1fafa64039c1464ee8732f11a5341a6f41e0c202294736ed64db1a84",
348314327Savg	"b12932b0627d1c060942f5447764155655bd4da0c9afa6dd9b9ef53129af1b8fb0195996d2de9ca0df9d821ffee67026",
349314327Savg	"99428d401bf4abcd4ee0695248c9858b7503853acfae21a9cffa7855f46d1395ef38596fcd06d5a8c32d41a839cc5dfb"
350314327Savg};
351314327Savg
352238964Sdelphijconst char *SHA512_TestOutput[MDTESTCOUNT] = {
353238964Sdelphij	"cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e",
354238964Sdelphij	"1f40fc92da241694750979ee6cf582f2d5d7d28e18335de05abc54d0560e0f5302860c652bf08d560252aa5e74210546f369fbbbce8c12cfc7957b2652fe9a75",
355238964Sdelphij	"ddaf35a193617abacc417349ae20413112e6fa4e89a97ea20a9eeee64b55d39a2192992a274fc1a836ba3c23a3feebbd454d4423643ce80e2a9ac94fa54ca49f",
356238964Sdelphij	"107dbf389d9e9f71a3a95f6c055b9251bc5268c2be16d6c13492ea45b0199f3309e16455ab1e96118e8a905d5597b72038ddb372a89826046de66687bb420e7c",
357238964Sdelphij	"4dbff86cc2ca1bae1e16468a05cb9881c97f1753bce3619034898faa1aabe429955a1bf8ec483d7421fe3c1646613a59ed5441fb0f321389f77f48a879c7b1f1",
358238964Sdelphij	"1e07be23c26a86ea37ea810c8ec7809352515a970e9253c26f536cfc7a9996c45c8370583e0a78fa4a90041d71a4ceab7423f19c71b9d5a3e01249f0bebd5894",
359238964Sdelphij	"72ec1ef1124a45b047e8b7c75a932195135bb61de24ec0d1914042246e0aec3a2354e093d76f3048b456764346900cb130d2a4fd5dd16abb5e30bcb850dee843",
360238964Sdelphij	"e8a835195e039708b13d9131e025f4441dbdc521ce625f245a436dcd762f54bf5cb298d96235e6c6a304e087ec8189b9512cbdf6427737ea82793460c367b9c3"
361238964Sdelphij};
362238964Sdelphij
363314332Savgconst char *SHA512t256_TestOutput[MDTESTCOUNT] = {
364314332Savg	"c672b8d1ef56ed28ab87c3622c5114069bdd3ad7b8f9737498d0c01ecef0967a",
365314332Savg	"455e518824bc0601f9fb858ff5c37d417d67c2f8e0df2babe4808858aea830f8",
366314332Savg	"53048e2681941ef99b2e29b76b4c7dabe4c2d0c634fc6d46e0e2f13107e7af23",
367314332Savg	"0cf471fd17ed69d990daf3433c89b16d63dec1bb9cb42a6094604ee5d7b4e9fb",
368314332Savg	"fc3189443f9c268f626aea08a756abe7b726b05f701cb08222312ccfd6710a26",
369314332Savg	"cdf1cc0effe26ecc0c13758f7b4a48e000615df241284185c39eb05d355bb9c8",
370314332Savg	"2c9fdbc0c90bdd87612ee8455474f9044850241dc105b1e8b94b8ddf5fac9148",
371314332Savg	"dd095fc859b336c30a52548b3dc59fcc0d1be8616ebcf3368fad23107db2d736"
372314332Savg};
373314332Savg
374130351Seikconst char *RIPEMD160_TestOutput[MDTESTCOUNT] = {
375130351Seik	"9c1185a5c5e9fc54612808977ee8f548b2258d31",
376130351Seik	"0bdc9d2d256b3ee9daae347be6f4dc835a467ffe",
377130351Seik	"8eb208f7e05d987a9b044a8e98c6b087f15a0bfc",
378130351Seik	"5d0689ef49d2fae572b881b123a85ffa21595f36",
379130351Seik	"f71c27109c692c1b56bbdceb5b9d2865b3708dbc",
380130351Seik	"b0e20b6e3116640286ed3a87a5713079b21f5189",
381130351Seik	"9b752e45573d4b39f4dbd3323cab82bf63326bfb",
382130351Seik	"5feb69c6bf7c29d95715ad55f57d8ac5b2b7dd32"
383130351Seik};
384130351Seik
3856562Sphkstatic void
386281513SdelphijMDTestSuite(const Algorithm_t *alg)
3873995Spst{
388109870Ssilby	int i;
389130351Seik	char buffer[HEX_DIGEST_LENGTH];
39032086Ssteve
391130351Seik	printf("%s test suite:\n", alg->name);
392130351Seik	for (i = 0; i < MDTESTCOUNT; i++) {
393130351Seik		(*alg->Data)(MDTestInput[i], strlen(MDTestInput[i]), buffer);
394130351Seik		printf("%s (\"%s\") = %s", alg->name, MDTestInput[i], buffer);
395130351Seik		if (strcmp(buffer, (*alg->TestOutput)[i]) == 0)
396109870Ssilby			printf(" - verified correct\n");
397109870Ssilby		else
398109870Ssilby			printf(" - INCORRECT RESULT!\n");
399109870Ssilby	}
4003995Spst}
4013995Spst
4026562Sphk/*
4036562Sphk * Digests the standard input and prints the result.
4043995Spst */
4056562Sphkstatic void
406281513SdelphijMDFilter(const Algorithm_t *alg, int tee)
4073995Spst{
408130351Seik	DIGEST_CTX context;
40976988Sru	unsigned int len;
41032074Ssteve	unsigned char buffer[BUFSIZ];
411130351Seik	char buf[HEX_DIGEST_LENGTH];
4123995Spst
413130351Seik	alg->Init(&context);
41432074Ssteve	while ((len = fread(buffer, 1, BUFSIZ, stdin))) {
41576988Sru		if (tee && len != fwrite(buffer, 1, len, stdout))
41637421Scharnier			err(1, "stdout");
417130351Seik		alg->Update(&context, buffer, len);
4186725Sphk	}
419130351Seik	printf("%s\n", alg->End(&context, buf));
4203995Spst}
42132074Ssteve
42232074Sstevestatic void
423281513Sdelphijusage(const Algorithm_t *alg)
42432074Ssteve{
42532086Ssteve
426235205Seadler	fprintf(stderr, "usage: %s [-pqrtx] [-c string] [-s string] [files ...]\n", alg->progname);
42732074Ssteve	exit(1);
42832074Ssteve}
429