aboutsummaryrefslogblamecommitdiffstats
path: root/contrib/libs/openssl/apps/dgst.c
blob: f9b184be4cc15d3bdf5279ac3adc7e02cc0aa175 (plain) (tree)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596


















































































































































































































































































































































































































































































































































































































                                                                                
/*
 * Copyright 1995-2021 The OpenSSL Project Authors. All Rights Reserved.
 *
 * Licensed under the OpenSSL license (the "License").  You may not use
 * this file except in compliance with the License.  You can obtain a copy
 * in the file LICENSE in the source distribution or at
 * https://www.openssl.org/source/license.html
 */

#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include "apps.h"
#include "progs.h"
#include <openssl/bio.h>
#include <openssl/err.h>
#include <openssl/evp.h>
#include <openssl/objects.h>
#include <openssl/x509.h>
#include <openssl/pem.h>
#include <openssl/hmac.h>
#include <ctype.h>

#undef BUFSIZE
#define BUFSIZE 1024*8

int do_fp(BIO *out, unsigned char *buf, BIO *bp, int sep, int binout,
          EVP_PKEY *key, unsigned char *sigin, int siglen,
          const char *sig_name, const char *md_name,
          const char *file);
static void show_digests(const OBJ_NAME *name, void *bio_);

struct doall_dgst_digests {
    BIO *bio;
    int n;
};

typedef enum OPTION_choice {
    OPT_ERR = -1, OPT_EOF = 0, OPT_HELP, OPT_LIST,
    OPT_C, OPT_R, OPT_OUT, OPT_SIGN, OPT_PASSIN, OPT_VERIFY,
    OPT_PRVERIFY, OPT_SIGNATURE, OPT_KEYFORM, OPT_ENGINE, OPT_ENGINE_IMPL,
    OPT_HEX, OPT_BINARY, OPT_DEBUG, OPT_FIPS_FINGERPRINT,
    OPT_HMAC, OPT_MAC, OPT_SIGOPT, OPT_MACOPT,
    OPT_DIGEST,
    OPT_R_ENUM
} OPTION_CHOICE;

const OPTIONS dgst_options[] = {
    {OPT_HELP_STR, 1, '-', "Usage: %s [options] [file...]\n"},
    {OPT_HELP_STR, 1, '-',
        "  file... files to digest (default is stdin)\n"},
    {"help", OPT_HELP, '-', "Display this summary"},
    {"list", OPT_LIST, '-', "List digests"},
    {"c", OPT_C, '-', "Print the digest with separating colons"},
    {"r", OPT_R, '-', "Print the digest in coreutils format"},
    {"out", OPT_OUT, '>', "Output to filename rather than stdout"},
    {"passin", OPT_PASSIN, 's', "Input file pass phrase source"},
    {"sign", OPT_SIGN, 's', "Sign digest using private key"},
    {"verify", OPT_VERIFY, 's',
     "Verify a signature using public key"},
    {"prverify", OPT_PRVERIFY, 's',
     "Verify a signature using private key"},
    {"signature", OPT_SIGNATURE, '<', "File with signature to verify"},
    {"keyform", OPT_KEYFORM, 'f', "Key file format (PEM or ENGINE)"},
    {"hex", OPT_HEX, '-', "Print as hex dump"},
    {"binary", OPT_BINARY, '-', "Print in binary form"},
    {"d", OPT_DEBUG, '-', "Print debug info"},
    {"debug", OPT_DEBUG, '-', "Print debug info"},
    {"fips-fingerprint", OPT_FIPS_FINGERPRINT, '-',
     "Compute HMAC with the key used in OpenSSL-FIPS fingerprint"},
    {"hmac", OPT_HMAC, 's', "Create hashed MAC with key"},
    {"mac", OPT_MAC, 's', "Create MAC (not necessarily HMAC)"},
    {"sigopt", OPT_SIGOPT, 's', "Signature parameter in n:v form"},
    {"macopt", OPT_MACOPT, 's', "MAC algorithm parameters in n:v form or key"},
    {"", OPT_DIGEST, '-', "Any supported digest"},
    OPT_R_OPTIONS,
#ifndef OPENSSL_NO_ENGINE
    {"engine", OPT_ENGINE, 's', "Use engine e, possibly a hardware device"},
    {"engine_impl", OPT_ENGINE_IMPL, '-',
     "Also use engine given by -engine for digest operations"},
#endif
    {NULL}
};

int dgst_main(int argc, char **argv)
{
    BIO *in = NULL, *inp, *bmd = NULL, *out = NULL;
    ENGINE *e = NULL, *impl = NULL;
    EVP_PKEY *sigkey = NULL;
    STACK_OF(OPENSSL_STRING) *sigopts = NULL, *macopts = NULL;
    char *hmac_key = NULL;
    char *mac_name = NULL;
    char *passinarg = NULL, *passin = NULL;
    const EVP_MD *md = NULL, *m;
    const char *outfile = NULL, *keyfile = NULL, *prog = NULL;
    const char *sigfile = NULL;
    OPTION_CHOICE o;
    int separator = 0, debug = 0, keyform = FORMAT_PEM, siglen = 0;
    int i, ret = 1, out_bin = -1, want_pub = 0, do_verify = 0;
    unsigned char *buf = NULL, *sigbuf = NULL;
    int engine_impl = 0;
    struct doall_dgst_digests dec;

    prog = opt_progname(argv[0]);
    buf = app_malloc(BUFSIZE, "I/O buffer");
    md = EVP_get_digestbyname(prog);

    prog = opt_init(argc, argv, dgst_options);
    while ((o = opt_next()) != OPT_EOF) {
        switch (o) {
        case OPT_EOF:
        case OPT_ERR:
 opthelp:
            BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
            goto end;
        case OPT_HELP:
            opt_help(dgst_options);
            ret = 0;
            goto end;
        case OPT_LIST:
            BIO_printf(bio_out, "Supported digests:\n");
            dec.bio = bio_out;
            dec.n = 0;
            OBJ_NAME_do_all_sorted(OBJ_NAME_TYPE_MD_METH,
                                   show_digests, &dec);
            BIO_printf(bio_out, "\n");
            ret = 0;
            goto end;
        case OPT_C:
            separator = 1;
            break;
        case OPT_R:
            separator = 2;
            break;
        case OPT_R_CASES:
            if (!opt_rand(o))
                goto end;
            break;
        case OPT_OUT:
            outfile = opt_arg();
            break;
        case OPT_SIGN:
            keyfile = opt_arg();
            break;
        case OPT_PASSIN:
            passinarg = opt_arg();
            break;
        case OPT_VERIFY:
            keyfile = opt_arg();
            want_pub = do_verify = 1;
            break;
        case OPT_PRVERIFY:
            keyfile = opt_arg();
            do_verify = 1;
            break;
        case OPT_SIGNATURE:
            sigfile = opt_arg();
            break;
        case OPT_KEYFORM:
            if (!opt_format(opt_arg(), OPT_FMT_ANY, &keyform))
                goto opthelp;
            break;
        case OPT_ENGINE:
            e = setup_engine(opt_arg(), 0);
            break;
        case OPT_ENGINE_IMPL:
            engine_impl = 1;
            break;
        case OPT_HEX:
            out_bin = 0;
            break;
        case OPT_BINARY:
            out_bin = 1;
            break;
        case OPT_DEBUG:
            debug = 1;
            break;
        case OPT_FIPS_FINGERPRINT:
            hmac_key = "etaonrishdlcupfm";
            break;
        case OPT_HMAC:
            hmac_key = opt_arg();
            break;
        case OPT_MAC:
            mac_name = opt_arg();
            break;
        case OPT_SIGOPT:
            if (!sigopts)
                sigopts = sk_OPENSSL_STRING_new_null();
            if (!sigopts || !sk_OPENSSL_STRING_push(sigopts, opt_arg()))
                goto opthelp;
            break;
        case OPT_MACOPT:
            if (!macopts)
                macopts = sk_OPENSSL_STRING_new_null();
            if (!macopts || !sk_OPENSSL_STRING_push(macopts, opt_arg()))
                goto opthelp;
            break;
        case OPT_DIGEST:
            if (!opt_md(opt_unknown(), &m))
                goto opthelp;
            md = m;
            break;
        }
    }
    argc = opt_num_rest();
    argv = opt_rest();
    if (keyfile != NULL && argc > 1) {
        BIO_printf(bio_err, "%s: Can only sign or verify one file.\n", prog);
        goto end;
    }

    if (do_verify && sigfile == NULL) {
        BIO_printf(bio_err,
                   "No signature to verify: use the -signature option\n");
        goto end;
    }
    if (engine_impl)
        impl = e;

    in = BIO_new(BIO_s_file());
    bmd = BIO_new(BIO_f_md());
    if ((in == NULL) || (bmd == NULL)) {
        ERR_print_errors(bio_err);
        goto end;
    }

    if (debug) {
        BIO_set_callback(in, BIO_debug_callback);
        /* needed for windows 3.1 */
        BIO_set_callback_arg(in, (char *)bio_err);
    }

    if (!app_passwd(passinarg, NULL, &passin, NULL)) {
        BIO_printf(bio_err, "Error getting password\n");
        goto end;
    }

    if (out_bin == -1) {
        if (keyfile != NULL)
            out_bin = 1;
        else
            out_bin = 0;
    }

    out = bio_open_default(outfile, 'w', out_bin ? FORMAT_BINARY : FORMAT_TEXT);
    if (out == NULL)
        goto end;

    if ((!(mac_name == NULL) + !(keyfile == NULL) + !(hmac_key == NULL)) > 1) {
        BIO_printf(bio_err, "MAC and Signing key cannot both be specified\n");
        goto end;
    }

    if (keyfile != NULL) {
        int type;

        if (want_pub)
            sigkey = load_pubkey(keyfile, keyform, 0, NULL, e, "key file");
        else
            sigkey = load_key(keyfile, keyform, 0, passin, e, "key file");
        if (sigkey == NULL) {
            /*
             * load_[pub]key() has already printed an appropriate message
             */
            goto end;
        }
        type = EVP_PKEY_id(sigkey);
        if (type == EVP_PKEY_ED25519 || type == EVP_PKEY_ED448) {
            /*
             * We implement PureEdDSA for these which doesn't have a separate
             * digest, and only supports one shot.
             */
            BIO_printf(bio_err, "Key type not supported for this operation\n");
            goto end;
        }
    }

    if (mac_name != NULL) {
        EVP_PKEY_CTX *mac_ctx = NULL;
        int r = 0;
        if (!init_gen_str(&mac_ctx, mac_name, impl, 0))
            goto mac_end;
        if (macopts != NULL) {
            char *macopt;
            for (i = 0; i < sk_OPENSSL_STRING_num(macopts); i++) {
                macopt = sk_OPENSSL_STRING_value(macopts, i);
                if (pkey_ctrl_string(mac_ctx, macopt) <= 0) {
                    BIO_printf(bio_err,
                               "MAC parameter error \"%s\"\n", macopt);
                    ERR_print_errors(bio_err);
                    goto mac_end;
                }
            }
        }
        if (EVP_PKEY_keygen(mac_ctx, &sigkey) <= 0) {
            BIO_puts(bio_err, "Error generating key\n");
            ERR_print_errors(bio_err);
            goto mac_end;
        }
        r = 1;
 mac_end:
        EVP_PKEY_CTX_free(mac_ctx);
        if (r == 0)
            goto end;
    }

    if (hmac_key != NULL) {
        sigkey = EVP_PKEY_new_raw_private_key(EVP_PKEY_HMAC, impl,
                                              (unsigned char *)hmac_key, -1);
        if (sigkey == NULL)
            goto end;
    }

    if (sigkey != NULL) {
        EVP_MD_CTX *mctx = NULL;
        EVP_PKEY_CTX *pctx = NULL;
        int r;
        if (BIO_get_md_ctx(bmd, &mctx) <= 0) {
            BIO_printf(bio_err, "Error getting context\n");
            ERR_print_errors(bio_err);
            goto end;
        }
        if (do_verify)
            r = EVP_DigestVerifyInit(mctx, &pctx, md, impl, sigkey);
        else
            r = EVP_DigestSignInit(mctx, &pctx, md, impl, sigkey);
        if (!r) {
            BIO_printf(bio_err, "Error setting context\n");
            ERR_print_errors(bio_err);
            goto end;
        }
        if (sigopts != NULL) {
            char *sigopt;
            for (i = 0; i < sk_OPENSSL_STRING_num(sigopts); i++) {
                sigopt = sk_OPENSSL_STRING_value(sigopts, i);
                if (pkey_ctrl_string(pctx, sigopt) <= 0) {
                    BIO_printf(bio_err, "parameter error \"%s\"\n", sigopt);
                    ERR_print_errors(bio_err);
                    goto end;
                }
            }
        }
    }
    /* we use md as a filter, reading from 'in' */
    else {
        EVP_MD_CTX *mctx = NULL;
        if (BIO_get_md_ctx(bmd, &mctx) <= 0) {
            BIO_printf(bio_err, "Error getting context\n");
            ERR_print_errors(bio_err);
            goto end;
        }
        if (md == NULL)
            md = EVP_sha256();
        if (!EVP_DigestInit_ex(mctx, md, impl)) {
            BIO_printf(bio_err, "Error setting digest\n");
            ERR_print_errors(bio_err);
            goto end;
        }
    }

    if (sigfile != NULL && sigkey != NULL) {
        BIO *sigbio = BIO_new_file(sigfile, "rb");
        if (sigbio == NULL) {
            BIO_printf(bio_err, "Error opening signature file %s\n", sigfile);
            ERR_print_errors(bio_err);
            goto end;
        }
        siglen = EVP_PKEY_size(sigkey);
        sigbuf = app_malloc(siglen, "signature buffer");
        siglen = BIO_read(sigbio, sigbuf, siglen);
        BIO_free(sigbio);
        if (siglen <= 0) {
            BIO_printf(bio_err, "Error reading signature file %s\n", sigfile);
            ERR_print_errors(bio_err);
            goto end;
        }
    }
    inp = BIO_push(bmd, in);

    if (md == NULL) {
        EVP_MD_CTX *tctx;
        BIO_get_md_ctx(bmd, &tctx);
        md = EVP_MD_CTX_md(tctx);
    }

    if (argc == 0) {
        BIO_set_fp(in, stdin, BIO_NOCLOSE);
        ret = do_fp(out, buf, inp, separator, out_bin, sigkey, sigbuf,
                    siglen, NULL, NULL, "stdin");
    } else {
        const char *md_name = NULL, *sig_name = NULL;
        if (!out_bin) {
            if (sigkey != NULL) {
                const EVP_PKEY_ASN1_METHOD *ameth;
                ameth = EVP_PKEY_get0_asn1(sigkey);
                if (ameth)
                    EVP_PKEY_asn1_get0_info(NULL, NULL,
                                            NULL, NULL, &sig_name, ameth);
            }
            if (md != NULL)
                md_name = EVP_MD_name(md);
        }
        ret = 0;
        for (i = 0; i < argc; i++) {
            int r;
            if (BIO_read_filename(in, argv[i]) <= 0) {
                perror(argv[i]);
                ret++;
                continue;
            } else {
                r = do_fp(out, buf, inp, separator, out_bin, sigkey, sigbuf,
                          siglen, sig_name, md_name, argv[i]);
            }
            if (r)
                ret = r;
            (void)BIO_reset(bmd);
        }
    }
 end:
    OPENSSL_clear_free(buf, BUFSIZE);
    BIO_free(in);
    OPENSSL_free(passin);
    BIO_free_all(out);
    EVP_PKEY_free(sigkey);
    sk_OPENSSL_STRING_free(sigopts);
    sk_OPENSSL_STRING_free(macopts);
    OPENSSL_free(sigbuf);
    BIO_free(bmd);
    release_engine(e);
    return ret;
}

static void show_digests(const OBJ_NAME *name, void *arg)
{
    struct doall_dgst_digests *dec = (struct doall_dgst_digests *)arg;
    const EVP_MD *md = NULL;

    /* Filter out signed digests (a.k.a signature algorithms) */
    if (strstr(name->name, "rsa") != NULL || strstr(name->name, "RSA") != NULL)
        return;

    if (!islower((unsigned char)*name->name))
        return;

    /* Filter out message digests that we cannot use */
    md = EVP_get_digestbyname(name->name);
    if (md == NULL)
        return;

    BIO_printf(dec->bio, "-%-25s", name->name);
    if (++dec->n == 3) {
        BIO_printf(dec->bio, "\n");
        dec->n = 0;
    } else {
        BIO_printf(dec->bio, " ");
    }
}

/*
 * The newline_escape_filename function performs newline escaping for any
 * filename that contains a newline.  This function also takes a pointer
 * to backslash. The backslash pointer is a flag to indicating whether a newline
 * is present in the filename.  If a newline is present, the backslash flag is
 * set and the output format will contain a backslash at the beginning of the
 * digest output. This output format is to replicate the output format found
 * in the '*sum' checksum programs. This aims to preserve backward
 * compatibility.
 */
static const char *newline_escape_filename(const char *file, int * backslash)
{
    size_t i, e = 0, length = strlen(file), newline_count = 0, mem_len = 0;
    char *file_cpy = NULL;

    for (i = 0; i < length; i++)
        if (file[i] == '\n')
            newline_count++;

    mem_len = length + newline_count + 1;
    file_cpy = app_malloc(mem_len, file);
    i = 0;

    while(e < length) {
        const char c = file[e];
        if (c == '\n') {
            file_cpy[i++] = '\\';
            file_cpy[i++] = 'n';
            *backslash = 1;
        } else {
            file_cpy[i++] = c;
        }
        e++;
    }
    file_cpy[i] = '\0';
    return (const char*)file_cpy;
}


int do_fp(BIO *out, unsigned char *buf, BIO *bp, int sep, int binout,
          EVP_PKEY *key, unsigned char *sigin, int siglen,
          const char *sig_name, const char *md_name,
          const char *file)
{
    size_t len = BUFSIZE;
    int i, backslash = 0, ret = 1;
    unsigned char *sigbuf = NULL;

    while (BIO_pending(bp) || !BIO_eof(bp)) {
        i = BIO_read(bp, (char *)buf, BUFSIZE);
        if (i < 0) {
            BIO_printf(bio_err, "Read Error in %s\n", file);
            ERR_print_errors(bio_err);
            goto end;
        }
        if (i == 0)
            break;
    }
    if (sigin != NULL) {
        EVP_MD_CTX *ctx;
        BIO_get_md_ctx(bp, &ctx);
        i = EVP_DigestVerifyFinal(ctx, sigin, (unsigned int)siglen);
        if (i > 0) {
            BIO_printf(out, "Verified OK\n");
        } else if (i == 0) {
            BIO_printf(out, "Verification Failure\n");
            goto end;
        } else {
            BIO_printf(bio_err, "Error Verifying Data\n");
            ERR_print_errors(bio_err);
            goto end;
        }
        ret = 0;
        goto end;
    }
    if (key != NULL) {
        EVP_MD_CTX *ctx;
        int pkey_len;
        BIO_get_md_ctx(bp, &ctx);
        pkey_len = EVP_PKEY_size(key);
        if (pkey_len > BUFSIZE) {
            len = pkey_len;
            sigbuf = app_malloc(len, "Signature buffer");
            buf = sigbuf;
        }
        if (!EVP_DigestSignFinal(ctx, buf, &len)) {
            BIO_printf(bio_err, "Error Signing Data\n");
            ERR_print_errors(bio_err);
            goto end;
        }
    } else {
        len = BIO_gets(bp, (char *)buf, BUFSIZE);
        if ((int)len < 0) {
            ERR_print_errors(bio_err);
            goto end;
        }
    }

    if (binout) {
        BIO_write(out, buf, len);
    } else if (sep == 2) {
        file = newline_escape_filename(file, &backslash);

        if (backslash == 1)
            BIO_puts(out, "\\");

        for (i = 0; i < (int)len; i++)
            BIO_printf(out, "%02x", buf[i]);

        BIO_printf(out, " *%s\n", file);
        OPENSSL_free((char *)file);
    } else {
        if (sig_name != NULL) {
            BIO_puts(out, sig_name);
            if (md_name != NULL)
                BIO_printf(out, "-%s", md_name);
            BIO_printf(out, "(%s)= ", file);
        } else if (md_name != NULL) {
            BIO_printf(out, "%s(%s)= ", md_name, file);
        } else {
            BIO_printf(out, "(%s)= ", file);
        }
        for (i = 0; i < (int)len; i++) {
            if (sep && (i != 0))
                BIO_printf(out, ":");
            BIO_printf(out, "%02x", buf[i]);
        }
        BIO_printf(out, "\n");
    }

    ret = 0;
 end:
    if (sigbuf != NULL)
        OPENSSL_clear_free(sigbuf, len);

    return ret;
}