1/* rsautl.c */
2/* Written by Dr Stephen N Henson (shenson@bigfoot.com) 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#ifndef OPENSSL_NO_RSA
61
62#include "apps.h"
63#include <string.h>
64#include <openssl/err.h>
65#include <openssl/pem.h>
66#include <openssl/rsa.h>
67
68#define RSA_SIGN 	1
69#define RSA_VERIFY 	2
70#define RSA_ENCRYPT 	3
71#define RSA_DECRYPT 	4
72
73#define KEY_PRIVKEY	1
74#define KEY_PUBKEY	2
75#define KEY_CERT	3
76
77static void usage(void);
78
79#undef PROG
80
81#define PROG rsautl_main
82
83int MAIN(int argc, char **);
84
85int MAIN(int argc, char **argv)
86{
87	ENGINE *e = NULL;
88	BIO *in = NULL, *out = NULL;
89	char *infile = NULL, *outfile = NULL;
90#ifndef OPENSSL_NO_ENGINE
91	char *engine = NULL;
92#endif
93	char *keyfile = NULL;
94	char rsa_mode = RSA_VERIFY, key_type = KEY_PRIVKEY;
95	int keyform = FORMAT_PEM;
96	char need_priv = 0, badarg = 0, rev = 0;
97	char hexdump = 0, asn1parse = 0;
98	X509 *x;
99	EVP_PKEY *pkey = NULL;
100	RSA *rsa = NULL;
101	unsigned char *rsa_in = NULL, *rsa_out = NULL, pad;
102	char *passargin = NULL, *passin = NULL;
103	int rsa_inlen, rsa_outlen = 0;
104	int keysize;
105
106	int ret = 1;
107
108	argc--;
109	argv++;
110
111	if(!bio_err) bio_err = BIO_new_fp(stderr, BIO_NOCLOSE);
112
113	if (!load_config(bio_err, NULL))
114		goto end;
115	ERR_load_crypto_strings();
116	OpenSSL_add_all_algorithms();
117	pad = RSA_PKCS1_PADDING;
118
119	while(argc >= 1)
120	{
121		if (!strcmp(*argv,"-in")) {
122			if (--argc < 1) badarg = 1;
123                        infile= *(++argv);
124		} else if (!strcmp(*argv,"-out")) {
125			if (--argc < 1) badarg = 1;
126			outfile= *(++argv);
127		} else if(!strcmp(*argv, "-inkey")) {
128			if (--argc < 1) badarg = 1;
129			keyfile = *(++argv);
130		} else if (!strcmp(*argv,"-passin")) {
131			if (--argc < 1) badarg = 1;
132			passargin= *(++argv);
133		} else if (strcmp(*argv,"-keyform") == 0) {
134			if (--argc < 1) badarg = 1;
135			keyform=str2fmt(*(++argv));
136#ifndef OPENSSL_NO_ENGINE
137		} else if(!strcmp(*argv, "-engine")) {
138			if (--argc < 1) badarg = 1;
139			engine = *(++argv);
140#endif
141		} else if(!strcmp(*argv, "-pubin")) {
142			key_type = KEY_PUBKEY;
143		} else if(!strcmp(*argv, "-certin")) {
144			key_type = KEY_CERT;
145		}
146		else if(!strcmp(*argv, "-asn1parse")) asn1parse = 1;
147		else if(!strcmp(*argv, "-hexdump")) hexdump = 1;
148		else if(!strcmp(*argv, "-raw")) pad = RSA_NO_PADDING;
149		else if(!strcmp(*argv, "-oaep")) pad = RSA_PKCS1_OAEP_PADDING;
150		else if(!strcmp(*argv, "-ssl")) pad = RSA_SSLV23_PADDING;
151		else if(!strcmp(*argv, "-pkcs")) pad = RSA_PKCS1_PADDING;
152		else if(!strcmp(*argv, "-x931")) pad = RSA_X931_PADDING;
153		else if(!strcmp(*argv, "-sign")) {
154			rsa_mode = RSA_SIGN;
155			need_priv = 1;
156		} else if(!strcmp(*argv, "-verify")) rsa_mode = RSA_VERIFY;
157		else if(!strcmp(*argv, "-rev")) rev = 1;
158		else if(!strcmp(*argv, "-encrypt")) rsa_mode = RSA_ENCRYPT;
159		else if(!strcmp(*argv, "-decrypt")) {
160			rsa_mode = RSA_DECRYPT;
161			need_priv = 1;
162		} else badarg = 1;
163		if(badarg) {
164			usage();
165			goto end;
166		}
167		argc--;
168		argv++;
169	}
170
171	if(need_priv && (key_type != KEY_PRIVKEY)) {
172		BIO_printf(bio_err, "A private key is needed for this operation\n");
173		goto end;
174	}
175
176#ifndef OPENSSL_NO_ENGINE
177        e = setup_engine(bio_err, engine, 0);
178#endif
179	if(!app_passwd(bio_err, passargin, NULL, &passin, NULL)) {
180		BIO_printf(bio_err, "Error getting password\n");
181		goto end;
182	}
183
184/* FIXME: seed PRNG only if needed */
185	app_RAND_load_file(NULL, bio_err, 0);
186
187	switch(key_type) {
188		case KEY_PRIVKEY:
189		pkey = load_key(bio_err, keyfile, keyform, 0,
190			passin, e, "Private Key");
191		break;
192
193		case KEY_PUBKEY:
194		pkey = load_pubkey(bio_err, keyfile, keyform, 0,
195			NULL, e, "Public Key");
196		break;
197
198		case KEY_CERT:
199		x = load_cert(bio_err, keyfile, keyform,
200			NULL, e, "Certificate");
201		if(x) {
202			pkey = X509_get_pubkey(x);
203			X509_free(x);
204		}
205		break;
206	}
207
208	if(!pkey) {
209		return 1;
210	}
211
212	rsa = EVP_PKEY_get1_RSA(pkey);
213	EVP_PKEY_free(pkey);
214
215	if(!rsa) {
216		BIO_printf(bio_err, "Error getting RSA key\n");
217		ERR_print_errors(bio_err);
218		goto end;
219	}
220
221
222	if(infile) {
223		if(!(in = BIO_new_file(infile, "rb"))) {
224			BIO_printf(bio_err, "Error Reading Input File\n");
225			ERR_print_errors(bio_err);
226			goto end;
227		}
228	} else in = BIO_new_fp(stdin, BIO_NOCLOSE);
229
230	if(outfile) {
231		if(!(out = BIO_new_file(outfile, "wb"))) {
232			BIO_printf(bio_err, "Error Reading Output File\n");
233			ERR_print_errors(bio_err);
234			goto end;
235		}
236	} else {
237		out = BIO_new_fp(stdout, BIO_NOCLOSE);
238#ifdef OPENSSL_SYS_VMS
239		{
240		    BIO *tmpbio = BIO_new(BIO_f_linebuffer());
241		    out = BIO_push(tmpbio, out);
242		}
243#endif
244	}
245
246	keysize = RSA_size(rsa);
247
248	rsa_in = OPENSSL_malloc(keysize * 2);
249	rsa_out = OPENSSL_malloc(keysize);
250
251	/* Read the input data */
252	rsa_inlen = BIO_read(in, rsa_in, keysize * 2);
253	if(rsa_inlen <= 0) {
254		BIO_printf(bio_err, "Error reading input Data\n");
255		exit(1);
256	}
257	if(rev) {
258		int i;
259		unsigned char ctmp;
260		for(i = 0; i < rsa_inlen/2; i++) {
261			ctmp = rsa_in[i];
262			rsa_in[i] = rsa_in[rsa_inlen - 1 - i];
263			rsa_in[rsa_inlen - 1 - i] = ctmp;
264		}
265	}
266	switch(rsa_mode) {
267
268		case RSA_VERIFY:
269			rsa_outlen  = RSA_public_decrypt(rsa_inlen, rsa_in, rsa_out, rsa, pad);
270		break;
271
272		case RSA_SIGN:
273			rsa_outlen  = RSA_private_encrypt(rsa_inlen, rsa_in, rsa_out, rsa, pad);
274		break;
275
276		case RSA_ENCRYPT:
277			rsa_outlen  = RSA_public_encrypt(rsa_inlen, rsa_in, rsa_out, rsa, pad);
278		break;
279
280		case RSA_DECRYPT:
281			rsa_outlen  = RSA_private_decrypt(rsa_inlen, rsa_in, rsa_out, rsa, pad);
282		break;
283
284	}
285
286	if(rsa_outlen <= 0) {
287		BIO_printf(bio_err, "RSA operation error\n");
288		ERR_print_errors(bio_err);
289		goto end;
290	}
291	ret = 0;
292	if(asn1parse) {
293		if(!ASN1_parse_dump(out, rsa_out, rsa_outlen, 1, -1)) {
294			ERR_print_errors(bio_err);
295		}
296	} else if(hexdump) BIO_dump(out, (char *)rsa_out, rsa_outlen);
297	else BIO_write(out, rsa_out, rsa_outlen);
298	end:
299	RSA_free(rsa);
300	BIO_free(in);
301	BIO_free_all(out);
302	if(rsa_in) OPENSSL_free(rsa_in);
303	if(rsa_out) OPENSSL_free(rsa_out);
304	if(passin) OPENSSL_free(passin);
305	return ret;
306}
307
308static void usage()
309{
310	BIO_printf(bio_err, "Usage: rsautl [options]\n");
311	BIO_printf(bio_err, "-in file        input file\n");
312	BIO_printf(bio_err, "-out file       output file\n");
313	BIO_printf(bio_err, "-inkey file     input key\n");
314	BIO_printf(bio_err, "-keyform arg    private key format - default PEM\n");
315	BIO_printf(bio_err, "-pubin          input is an RSA public\n");
316	BIO_printf(bio_err, "-certin         input is a certificate carrying an RSA public key\n");
317	BIO_printf(bio_err, "-ssl            use SSL v2 padding\n");
318	BIO_printf(bio_err, "-raw            use no padding\n");
319	BIO_printf(bio_err, "-pkcs           use PKCS#1 v1.5 padding (default)\n");
320	BIO_printf(bio_err, "-oaep           use PKCS#1 OAEP\n");
321	BIO_printf(bio_err, "-sign           sign with private key\n");
322	BIO_printf(bio_err, "-verify         verify with public key\n");
323	BIO_printf(bio_err, "-encrypt        encrypt with public key\n");
324	BIO_printf(bio_err, "-decrypt        decrypt with private key\n");
325	BIO_printf(bio_err, "-hexdump        hex dump output\n");
326#ifndef OPENSSL_NO_ENGINE
327	BIO_printf(bio_err, "-engine e       use engine e, possibly a hardware device.\n");
328	BIO_printf (bio_err, "-passin arg    pass phrase source\n");
329#endif
330
331}
332
333#endif
334