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1/* $OpenBSD: rsautl.c,v 1.1 2014/08/26 17:47:25 jsing 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
62#include <string.h>
63
64#include "apps.h"
65
66#include <openssl/err.h>
67#include <openssl/pem.h>
68#include <openssl/rsa.h>
69
70#define RSA_SIGN 1
71#define RSA_VERIFY 2
72#define RSA_ENCRYPT 3
73#define RSA_DECRYPT 4
74
75#define KEY_PRIVKEY 1
76#define KEY_PUBKEY 2
77#define KEY_CERT 3
78
79static void usage(void);
80
81int rsautl_main(int argc, char **);
82
83int
84rsautl_main(int argc, char **argv)
85{
86 ENGINE *e = NULL;
87 BIO *in = NULL, *out = NULL;
88 char *infile = NULL, *outfile = NULL;
89#ifndef OPENSSL_NO_ENGINE
90 char *engine = NULL;
91#endif
92 char *keyfile = NULL;
93 char rsa_mode = RSA_VERIFY, key_type = KEY_PRIVKEY;
94 int keyform = FORMAT_PEM;
95 char need_priv = 0, badarg = 0, rev = 0;
96 char hexdump = 0, asn1parse = 0;
97 X509 *x;
98 EVP_PKEY *pkey = NULL;
99 RSA *rsa = NULL;
100 unsigned char *rsa_in = NULL, *rsa_out = NULL, pad;
101 char *passargin = NULL, *passin = NULL;
102 int rsa_inlen, rsa_outlen = 0;
103 int keysize;
104
105 int ret = 1;
106
107 argc--;
108 argv++;
109
110 ERR_load_crypto_strings();
111 OpenSSL_add_all_algorithms();
112 pad = RSA_PKCS1_PADDING;
113
114 while (argc >= 1) {
115 if (!strcmp(*argv, "-in")) {
116 if (--argc < 1)
117 badarg = 1;
118 else
119 infile = *(++argv);
120 } else if (!strcmp(*argv, "-out")) {
121 if (--argc < 1)
122 badarg = 1;
123 else
124 outfile = *(++argv);
125 } else if (!strcmp(*argv, "-inkey")) {
126 if (--argc < 1)
127 badarg = 1;
128 else
129 keyfile = *(++argv);
130 } else if (!strcmp(*argv, "-passin")) {
131 if (--argc < 1)
132 badarg = 1;
133 else
134 passargin = *(++argv);
135 } else if (strcmp(*argv, "-keyform") == 0) {
136 if (--argc < 1)
137 badarg = 1;
138 else
139 keyform = str2fmt(*(++argv));
140#ifndef OPENSSL_NO_ENGINE
141 } else if (!strcmp(*argv, "-engine")) {
142 if (--argc < 1)
143 badarg = 1;
144 else
145 engine = *(++argv);
146#endif
147 } else if (!strcmp(*argv, "-pubin")) {
148 key_type = KEY_PUBKEY;
149 } else if (!strcmp(*argv, "-certin")) {
150 key_type = KEY_CERT;
151 } else if (!strcmp(*argv, "-asn1parse"))
152 asn1parse = 1;
153 else if (!strcmp(*argv, "-hexdump"))
154 hexdump = 1;
155 else if (!strcmp(*argv, "-raw"))
156 pad = RSA_NO_PADDING;
157 else if (!strcmp(*argv, "-oaep"))
158 pad = RSA_PKCS1_OAEP_PADDING;
159 else if (!strcmp(*argv, "-ssl"))
160 pad = RSA_SSLV23_PADDING;
161 else if (!strcmp(*argv, "-pkcs"))
162 pad = RSA_PKCS1_PADDING;
163 else if (!strcmp(*argv, "-x931"))
164 pad = RSA_X931_PADDING;
165 else if (!strcmp(*argv, "-sign")) {
166 rsa_mode = RSA_SIGN;
167 need_priv = 1;
168 } else if (!strcmp(*argv, "-verify"))
169 rsa_mode = RSA_VERIFY;
170 else if (!strcmp(*argv, "-rev"))
171 rev = 1;
172 else if (!strcmp(*argv, "-encrypt"))
173 rsa_mode = RSA_ENCRYPT;
174 else if (!strcmp(*argv, "-decrypt")) {
175 rsa_mode = RSA_DECRYPT;
176 need_priv = 1;
177 } else
178 badarg = 1;
179 if (badarg) {
180 usage();
181 goto end;
182 }
183 argc--;
184 argv++;
185 }
186
187 if (need_priv && (key_type != KEY_PRIVKEY)) {
188 BIO_printf(bio_err, "A private key is needed for this operation\n");
189 goto end;
190 }
191#ifndef OPENSSL_NO_ENGINE
192 e = setup_engine(bio_err, engine, 0);
193#endif
194 if (!app_passwd(bio_err, passargin, NULL, &passin, NULL)) {
195 BIO_printf(bio_err, "Error getting password\n");
196 goto end;
197 }
198
199 switch (key_type) {
200 case KEY_PRIVKEY:
201 pkey = load_key(bio_err, keyfile, keyform, 0,
202 passin, e, "Private Key");
203 break;
204
205 case KEY_PUBKEY:
206 pkey = load_pubkey(bio_err, keyfile, keyform, 0,
207 NULL, e, "Public Key");
208 break;
209
210 case KEY_CERT:
211 x = load_cert(bio_err, keyfile, keyform,
212 NULL, e, "Certificate");
213 if (x) {
214 pkey = X509_get_pubkey(x);
215 X509_free(x);
216 }
217 break;
218 }
219
220 if (!pkey) {
221 return 1;
222 }
223 rsa = EVP_PKEY_get1_RSA(pkey);
224 EVP_PKEY_free(pkey);
225
226 if (!rsa) {
227 BIO_printf(bio_err, "Error getting RSA key\n");
228 ERR_print_errors(bio_err);
229 goto end;
230 }
231 if (infile) {
232 if (!(in = BIO_new_file(infile, "rb"))) {
233 BIO_printf(bio_err, "Error Reading Input File\n");
234 ERR_print_errors(bio_err);
235 goto end;
236 }
237 } else
238 in = BIO_new_fp(stdin, BIO_NOCLOSE);
239
240 if (outfile) {
241 if (!(out = BIO_new_file(outfile, "wb"))) {
242 BIO_printf(bio_err, "Error Reading Output File\n");
243 ERR_print_errors(bio_err);
244 goto end;
245 }
246 } else {
247 out = BIO_new_fp(stdout, BIO_NOCLOSE);
248 }
249
250 keysize = RSA_size(rsa);
251
252 rsa_in = reallocarray(NULL, keysize, 2);
253 rsa_out = malloc(keysize);
254
255 /* Read the input data */
256 rsa_inlen = BIO_read(in, rsa_in, keysize * 2);
257 if (rsa_inlen <= 0) {
258 BIO_printf(bio_err, "Error reading input Data\n");
259 exit(1);
260 }
261 if (rev) {
262 int i;
263 unsigned char ctmp;
264 for (i = 0; i < rsa_inlen / 2; i++) {
265 ctmp = rsa_in[i];
266 rsa_in[i] = rsa_in[rsa_inlen - 1 - i];
267 rsa_in[rsa_inlen - 1 - i] = ctmp;
268 }
269 }
270 switch (rsa_mode) {
271
272 case RSA_VERIFY:
273 rsa_outlen = RSA_public_decrypt(rsa_inlen, rsa_in, rsa_out, rsa, pad);
274 break;
275
276 case RSA_SIGN:
277 rsa_outlen = RSA_private_encrypt(rsa_inlen, rsa_in, rsa_out, rsa, pad);
278 break;
279
280 case RSA_ENCRYPT:
281 rsa_outlen = RSA_public_encrypt(rsa_inlen, rsa_in, rsa_out, rsa, pad);
282 break;
283
284 case RSA_DECRYPT:
285 rsa_outlen = RSA_private_decrypt(rsa_inlen, rsa_in, rsa_out, rsa, pad);
286 break;
287
288 }
289
290 if (rsa_outlen <= 0) {
291 BIO_printf(bio_err, "RSA operation error\n");
292 ERR_print_errors(bio_err);
293 goto end;
294 }
295 ret = 0;
296 if (asn1parse) {
297 if (!ASN1_parse_dump(out, rsa_out, rsa_outlen, 1, -1)) {
298 ERR_print_errors(bio_err);
299 }
300 } else if (hexdump)
301 BIO_dump(out, (char *) rsa_out, rsa_outlen);
302 else
303 BIO_write(out, rsa_out, rsa_outlen);
304
305end:
306 RSA_free(rsa);
307 BIO_free(in);
308 BIO_free_all(out);
309 free(rsa_in);
310 free(rsa_out);
311 free(passin);
312
313 return ret;
314}
315
316static void
317usage()
318{
319 BIO_printf(bio_err, "Usage: rsautl [options]\n");
320 BIO_printf(bio_err, "-in file input file\n");
321 BIO_printf(bio_err, "-out file output file\n");
322 BIO_printf(bio_err, "-inkey file input key\n");
323 BIO_printf(bio_err, "-keyform arg private key format - default PEM\n");
324 BIO_printf(bio_err, "-pubin input is an RSA public\n");
325 BIO_printf(bio_err, "-certin input is a certificate carrying an RSA public key\n");
326 BIO_printf(bio_err, "-ssl use SSL v2 padding\n");
327 BIO_printf(bio_err, "-raw use no padding\n");
328 BIO_printf(bio_err, "-pkcs use PKCS#1 v1.5 padding (default)\n");
329 BIO_printf(bio_err, "-oaep use PKCS#1 OAEP\n");
330 BIO_printf(bio_err, "-sign sign with private key\n");
331 BIO_printf(bio_err, "-verify verify with public key\n");
332 BIO_printf(bio_err, "-encrypt encrypt with public key\n");
333 BIO_printf(bio_err, "-decrypt decrypt with private key\n");
334 BIO_printf(bio_err, "-hexdump hex dump output\n");
335#ifndef OPENSSL_NO_ENGINE
336 BIO_printf(bio_err, "-engine e use engine e, possibly a hardware device.\n");
337 BIO_printf(bio_err, "-passin arg pass phrase source\n");
338#endif
339
340}
341
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