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-rw-r--r--src/usr.bin/openssl/rsautl.c402
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diff --git a/src/usr.bin/openssl/rsautl.c b/src/usr.bin/openssl/rsautl.c
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1/* $OpenBSD: rsautl.c,v 1.24 2023/07/23 11:39:29 tb Exp $ */
2/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
3 * project 2000.
4 */
5/* ====================================================================
6 * Copyright (c) 2000 The OpenSSL Project. All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 *
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 *
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in
17 * the documentation and/or other materials provided with the
18 * distribution.
19 *
20 * 3. All advertising materials mentioning features or use of this
21 * software must display the following acknowledgment:
22 * "This product includes software developed by the OpenSSL Project
23 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
24 *
25 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
26 * endorse or promote products derived from this software without
27 * prior written permission. For written permission, please contact
28 * licensing@OpenSSL.org.
29 *
30 * 5. Products derived from this software may not be called "OpenSSL"
31 * nor may "OpenSSL" appear in their names without prior written
32 * permission of the OpenSSL Project.
33 *
34 * 6. Redistributions of any form whatsoever must retain the following
35 * acknowledgment:
36 * "This product includes software developed by the OpenSSL Project
37 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
38 *
39 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
40 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
41 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
42 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
43 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
44 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
45 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
46 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
48 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
49 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
50 * OF THE POSSIBILITY OF SUCH DAMAGE.
51 * ====================================================================
52 *
53 * This product includes cryptographic software written by Eric Young
54 * (eay@cryptsoft.com). This product includes software written by Tim
55 * Hudson (tjh@cryptsoft.com).
56 *
57 */
58
59#include <openssl/opensslconf.h>
60
61#include <string.h>
62
63#include "apps.h"
64
65#include <openssl/err.h>
66#include <openssl/pem.h>
67#include <openssl/rsa.h>
68
69#define RSA_SIGN 1
70#define RSA_VERIFY 2
71#define RSA_ENCRYPT 3
72#define RSA_DECRYPT 4
73
74#define KEY_PRIVKEY 1
75#define KEY_PUBKEY 2
76#define KEY_CERT 3
77
78static struct {
79 int asn1parse;
80 int hexdump;
81 char *infile;
82 char *keyfile;
83 int keyform;
84 int key_type;
85 char *outfile;
86 int pad;
87 char *passargin;
88 int rev;
89 int rsa_mode;
90} cfg;
91
92static const struct option rsautl_options[] = {
93 {
94 .name = "asn1parse",
95 .desc = "ASN.1 parse the output data",
96 .type = OPTION_FLAG,
97 .opt.flag = &cfg.asn1parse,
98 },
99 {
100 .name = "certin",
101 .desc = "Input is a certificate containing an RSA public key",
102 .type = OPTION_VALUE,
103 .value = KEY_CERT,
104 .opt.value = &cfg.key_type,
105 },
106 {
107 .name = "decrypt",
108 .desc = "Decrypt the input data using RSA private key",
109 .type = OPTION_VALUE,
110 .value = RSA_DECRYPT,
111 .opt.value = &cfg.rsa_mode,
112 },
113 {
114 .name = "encrypt",
115 .desc = "Encrypt the input data using RSA public key",
116 .type = OPTION_VALUE,
117 .value = RSA_ENCRYPT,
118 .opt.value = &cfg.rsa_mode,
119 },
120 {
121 .name = "hexdump",
122 .desc = "Hex dump the output data",
123 .type = OPTION_FLAG,
124 .opt.flag = &cfg.hexdump,
125 },
126 {
127 .name = "in",
128 .argname = "file",
129 .desc = "Input file (default stdin)",
130 .type = OPTION_ARG,
131 .opt.arg = &cfg.infile,
132 },
133 {
134 .name = "inkey",
135 .argname = "file",
136 .desc = "Input key file",
137 .type = OPTION_ARG,
138 .opt.arg = &cfg.keyfile,
139 },
140 {
141 .name = "keyform",
142 .argname = "fmt",
143 .desc = "Input key format (DER, TXT or PEM (default))",
144 .type = OPTION_ARG_FORMAT,
145 .opt.value = &cfg.keyform,
146 },
147 {
148 .name = "oaep",
149 .desc = "Use PKCS#1 OAEP padding",
150 .type = OPTION_VALUE,
151 .value = RSA_PKCS1_OAEP_PADDING,
152 .opt.value = &cfg.pad,
153 },
154 {
155 .name = "out",
156 .argname = "file",
157 .desc = "Output file (default stdout)",
158 .type = OPTION_ARG,
159 .opt.arg = &cfg.outfile,
160 },
161 {
162 .name = "passin",
163 .argname = "arg",
164 .desc = "Key password source",
165 .type = OPTION_ARG,
166 .opt.arg = &cfg.passargin,
167 },
168 {
169 .name = "pkcs",
170 .desc = "Use PKCS#1 v1.5 padding (default)",
171 .type = OPTION_VALUE,
172 .value = RSA_PKCS1_PADDING,
173 .opt.value = &cfg.pad,
174 },
175 {
176 .name = "pubin",
177 .desc = "Input is an RSA public key",
178 .type = OPTION_VALUE,
179 .value = KEY_PUBKEY,
180 .opt.value = &cfg.key_type,
181 },
182 {
183 .name = "raw",
184 .desc = "Use no padding",
185 .type = OPTION_VALUE,
186 .value = RSA_NO_PADDING,
187 .opt.value = &cfg.pad,
188 },
189 {
190 .name = "rev",
191 .desc = "Reverse the input data",
192 .type = OPTION_FLAG,
193 .opt.flag = &cfg.rev,
194 },
195 {
196 .name = "sign",
197 .desc = "Sign the input data using RSA private key",
198 .type = OPTION_VALUE,
199 .value = RSA_SIGN,
200 .opt.value = &cfg.rsa_mode,
201 },
202 {
203 .name = "verify",
204 .desc = "Verify the input data using RSA public key",
205 .type = OPTION_VALUE,
206 .value = RSA_VERIFY,
207 .opt.value = &cfg.rsa_mode,
208 },
209 {
210 .name = "x931",
211 .desc = "Use ANSI X9.31 padding",
212 .type = OPTION_VALUE,
213 .value = RSA_X931_PADDING,
214 .opt.value = &cfg.pad,
215 },
216
217 {NULL},
218};
219
220static void
221rsautl_usage(void)
222{
223 fprintf(stderr,
224 "usage: rsautl [-asn1parse] [-certin] [-decrypt] [-encrypt] "
225 "[-hexdump]\n"
226 " [-in file] [-inkey file] [-keyform der | pem]\n"
227 " [-oaep | -pkcs | -raw | -x931] [-out file] [-passin arg]\n"
228 " [-pubin] [-rev] [-sign] [-verify]\n\n");
229
230 options_usage(rsautl_options);
231}
232
233int
234rsautl_main(int argc, char **argv)
235{
236 BIO *in = NULL, *out = NULL;
237 X509 *x;
238 EVP_PKEY *pkey = NULL;
239 RSA *rsa = NULL;
240 unsigned char *rsa_in = NULL, *rsa_out = NULL;
241 char *passin = NULL;
242 int rsa_inlen, rsa_outlen = 0;
243 int need_priv = 0;
244 int keysize;
245 int ret = 1;
246
247 if (pledge("stdio cpath wpath rpath tty", NULL) == -1) {
248 perror("pledge");
249 exit(1);
250 }
251
252 memset(&cfg, 0, sizeof(cfg));
253 cfg.keyform = FORMAT_PEM;
254 cfg.key_type = KEY_PRIVKEY;
255 cfg.pad = RSA_PKCS1_PADDING;
256 cfg.rsa_mode = RSA_VERIFY;
257
258 if (options_parse(argc, argv, rsautl_options, NULL, NULL) != 0) {
259 rsautl_usage();
260 return (1);
261 }
262
263 if (cfg.rsa_mode == RSA_SIGN ||
264 cfg.rsa_mode == RSA_DECRYPT)
265 need_priv = 1;
266
267 if (need_priv && cfg.key_type != KEY_PRIVKEY) {
268 BIO_printf(bio_err, "A private key is needed for this operation\n");
269 goto end;
270 }
271 if (!app_passwd(bio_err, cfg.passargin, NULL, &passin, NULL)) {
272 BIO_printf(bio_err, "Error getting password\n");
273 goto end;
274 }
275
276 switch (cfg.key_type) {
277 case KEY_PRIVKEY:
278 pkey = load_key(bio_err, cfg.keyfile,
279 cfg.keyform, 0, passin, "Private Key");
280 break;
281
282 case KEY_PUBKEY:
283 pkey = load_pubkey(bio_err, cfg.keyfile,
284 cfg.keyform, 0, NULL, "Public Key");
285 break;
286
287 case KEY_CERT:
288 x = load_cert(bio_err, cfg.keyfile,
289 cfg.keyform, NULL, "Certificate");
290 if (x) {
291 pkey = X509_get_pubkey(x);
292 X509_free(x);
293 }
294 break;
295 }
296
297 if (!pkey)
298 goto end;
299
300 rsa = EVP_PKEY_get1_RSA(pkey);
301 EVP_PKEY_free(pkey);
302
303 if (!rsa) {
304 BIO_printf(bio_err, "Error getting RSA key\n");
305 ERR_print_errors(bio_err);
306 goto end;
307 }
308 if (cfg.infile) {
309 if (!(in = BIO_new_file(cfg.infile, "rb"))) {
310 BIO_printf(bio_err, "Error Reading Input File\n");
311 ERR_print_errors(bio_err);
312 goto end;
313 }
314 } else
315 in = BIO_new_fp(stdin, BIO_NOCLOSE);
316
317 if (cfg.outfile) {
318 if (!(out = BIO_new_file(cfg.outfile, "wb"))) {
319 BIO_printf(bio_err, "Error Reading Output File\n");
320 ERR_print_errors(bio_err);
321 goto end;
322 }
323 } else {
324 out = BIO_new_fp(stdout, BIO_NOCLOSE);
325 }
326
327 keysize = RSA_size(rsa);
328
329 rsa_in = reallocarray(NULL, keysize, 2);
330 if (rsa_in == NULL) {
331 BIO_printf(bio_err, "Error allocating memory for input data\n");
332 exit(1);
333 }
334 rsa_out = malloc(keysize);
335 if (rsa_out == NULL) {
336 BIO_printf(bio_err, "Error allocating memory for output data\n");
337 exit(1);
338 }
339
340 /* Read the input data */
341 rsa_inlen = BIO_read(in, rsa_in, keysize * 2);
342 if (rsa_inlen <= 0) {
343 BIO_printf(bio_err, "Error reading input Data\n");
344 exit(1);
345 }
346 if (cfg.rev) {
347 int i;
348 unsigned char ctmp;
349 for (i = 0; i < rsa_inlen / 2; i++) {
350 ctmp = rsa_in[i];
351 rsa_in[i] = rsa_in[rsa_inlen - 1 - i];
352 rsa_in[rsa_inlen - 1 - i] = ctmp;
353 }
354 }
355
356 switch (cfg.rsa_mode) {
357 case RSA_VERIFY:
358 rsa_outlen = RSA_public_decrypt(rsa_inlen, rsa_in, rsa_out,
359 rsa, cfg.pad);
360 break;
361
362 case RSA_SIGN:
363 rsa_outlen = RSA_private_encrypt(rsa_inlen, rsa_in, rsa_out,
364 rsa, cfg.pad);
365 break;
366
367 case RSA_ENCRYPT:
368 rsa_outlen = RSA_public_encrypt(rsa_inlen, rsa_in, rsa_out,
369 rsa, cfg.pad);
370 break;
371
372 case RSA_DECRYPT:
373 rsa_outlen = RSA_private_decrypt(rsa_inlen, rsa_in, rsa_out,
374 rsa, cfg.pad);
375 break;
376 }
377
378 if (rsa_outlen <= 0) {
379 BIO_printf(bio_err, "RSA operation error\n");
380 ERR_print_errors(bio_err);
381 goto end;
382 }
383 ret = 0;
384 if (cfg.asn1parse) {
385 if (!ASN1_parse_dump(out, rsa_out, rsa_outlen, 1, -1)) {
386 ERR_print_errors(bio_err);
387 }
388 } else if (cfg.hexdump)
389 BIO_dump(out, (char *) rsa_out, rsa_outlen);
390 else
391 BIO_write(out, rsa_out, rsa_outlen);
392
393 end:
394 RSA_free(rsa);
395 BIO_free(in);
396 BIO_free_all(out);
397 free(rsa_in);
398 free(rsa_out);
399 free(passin);
400
401 return ret;
402}
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