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#ifndef OPENSSL_NO_RSA
60
61#include "apps.h"
62#include <string.h>
63#include <openssl/err.h>
64#include <openssl/pem.h>
65
66#define RSA_SIGN 	1
67#define RSA_VERIFY 	2
68#define RSA_ENCRYPT 	3
69#define RSA_DECRYPT 	4
70
71#define KEY_PRIVKEY	1
72#define KEY_PUBKEY	2
73#define KEY_CERT	3
74
75static void usage(void);
76
77#undef PROG
78
79#define PROG rsautl_main
80
81int MAIN(int argc, char **);
82
83int MAIN(int argc, char **argv)
84{
85	ENGINE *e = NULL;
86	BIO *in = NULL, *out = NULL;
87	char *infile = NULL, *outfile = NULL;
88#ifndef OPENSSL_NO_ENGINE
89	char *engine = NULL;
90#endif
91	char *keyfile = NULL;
92	char rsa_mode = RSA_VERIFY, key_type = KEY_PRIVKEY;
93	int keyform = FORMAT_PEM;
94	char need_priv = 0, badarg = 0, rev = 0;
95	char hexdump = 0, asn1parse = 0;
96	X509 *x;
97	EVP_PKEY *pkey = NULL;
98	RSA *rsa = NULL;
99	unsigned char *rsa_in = NULL, *rsa_out = NULL, pad;
100	char *passargin = NULL, *passin = NULL;
101	int rsa_inlen, rsa_outlen = 0;
102	int keysize;
103
104	int ret = 1;
105
106	argc--;
107	argv++;
108
109	if(!bio_err) bio_err = BIO_new_fp(stderr, BIO_NOCLOSE);
110
111	if (!load_config(bio_err, NULL))
112		goto end;
113	ERR_load_crypto_strings();
114	OpenSSL_add_all_algorithms();
115	pad = RSA_PKCS1_PADDING;
116
117	while(argc >= 1)
118	{
119		if (!strcmp(*argv,"-in")) {
120			if (--argc < 1) badarg = 1;
121                        infile= *(++argv);
122		} else if (!strcmp(*argv,"-out")) {
123			if (--argc < 1) badarg = 1;
124			outfile= *(++argv);
125		} else if(!strcmp(*argv, "-inkey")) {
126			if (--argc < 1) badarg = 1;
127			keyfile = *(++argv);
128		} else if (!strcmp(*argv,"-passin")) {
129			if (--argc < 1) badarg = 1;
130			passargin= *(++argv);
131		} else if (strcmp(*argv,"-keyform") == 0) {
132			if (--argc < 1) badarg = 1;
133			keyform=str2fmt(*(++argv));
134#ifndef OPENSSL_NO_ENGINE
135		} else if(!strcmp(*argv, "-engine")) {
136			if (--argc < 1) badarg = 1;
137			engine = *(++argv);
138#endif
139		} else if(!strcmp(*argv, "-pubin")) {
140			key_type = KEY_PUBKEY;
141		} else if(!strcmp(*argv, "-certin")) {
142			key_type = KEY_CERT;
143		}
144		else if(!strcmp(*argv, "-asn1parse")) asn1parse = 1;
145		else if(!strcmp(*argv, "-hexdump")) hexdump = 1;
146		else if(!strcmp(*argv, "-raw")) pad = RSA_NO_PADDING;
147		else if(!strcmp(*argv, "-oaep")) pad = RSA_PKCS1_OAEP_PADDING;
148		else if(!strcmp(*argv, "-ssl")) pad = RSA_SSLV23_PADDING;
149		else if(!strcmp(*argv, "-pkcs")) pad = RSA_PKCS1_PADDING;
150		else if(!strcmp(*argv, "-sign")) {
151			rsa_mode = RSA_SIGN;
152			need_priv = 1;
153		} else if(!strcmp(*argv, "-verify")) rsa_mode = RSA_VERIFY;
154		else if(!strcmp(*argv, "-rev")) rev = 1;
155		else if(!strcmp(*argv, "-encrypt")) rsa_mode = RSA_ENCRYPT;
156		else if(!strcmp(*argv, "-decrypt")) {
157			rsa_mode = RSA_DECRYPT;
158			need_priv = 1;
159		} else badarg = 1;
160		if(badarg) {
161			usage();
162			goto end;
163		}
164		argc--;
165		argv++;
166	}
167
168	if(need_priv && (key_type != KEY_PRIVKEY)) {
169		BIO_printf(bio_err, "A private key is needed for this operation\n");
170		goto end;
171	}
172
173#ifndef OPENSSL_NO_ENGINE
174        e = setup_engine(bio_err, engine, 0);
175#endif
176	if(!app_passwd(bio_err, passargin, NULL, &passin, NULL)) {
177		BIO_printf(bio_err, "Error getting password\n");
178		goto end;
179	}
180
181/* FIXME: seed PRNG only if needed */
182	app_RAND_load_file(NULL, bio_err, 0);
183
184	switch(key_type) {
185		case KEY_PRIVKEY:
186		pkey = load_key(bio_err, keyfile, keyform, 0,
187			passin, e, "Private Key");
188		break;
189
190		case KEY_PUBKEY:
191		pkey = load_pubkey(bio_err, keyfile, keyform, 0,
192			NULL, e, "Public Key");
193		break;
194
195		case KEY_CERT:
196		x = load_cert(bio_err, keyfile, keyform,
197			NULL, e, "Certificate");
198		if(x) {
199			pkey = X509_get_pubkey(x);
200			X509_free(x);
201		}
202		break;
203	}
204
205	if(!pkey) {
206		return 1;
207	}
208
209	rsa = EVP_PKEY_get1_RSA(pkey);
210	EVP_PKEY_free(pkey);
211
212	if(!rsa) {
213		BIO_printf(bio_err, "Error getting RSA key\n");
214		ERR_print_errors(bio_err);
215		goto end;
216	}
217
218
219	if(infile) {
220		if(!(in = BIO_new_file(infile, "rb"))) {
221			BIO_printf(bio_err, "Error Reading Input File\n");
222			ERR_print_errors(bio_err);
223			goto end;
224		}
225	} else in = BIO_new_fp(stdin, BIO_NOCLOSE);
226
227	if(outfile) {
228		if(!(out = BIO_new_file(outfile, "wb"))) {
229			BIO_printf(bio_err, "Error Reading Output File\n");
230			ERR_print_errors(bio_err);
231			goto end;
232		}
233	} else {
234		out = BIO_new_fp(stdout, BIO_NOCLOSE);
235#ifdef OPENSSL_SYS_VMS
236		{
237		    BIO *tmpbio = BIO_new(BIO_f_linebuffer());
238		    out = BIO_push(tmpbio, out);
239		}
240#endif
241	}
242
243	keysize = RSA_size(rsa);
244
245	rsa_in = OPENSSL_malloc(keysize * 2);
246	rsa_out = OPENSSL_malloc(keysize);
247
248	/* Read the input data */
249	rsa_inlen = BIO_read(in, rsa_in, keysize * 2);
250	if(rsa_inlen <= 0) {
251		BIO_printf(bio_err, "Error reading input Data\n");
252		exit(1);
253	}
254	if(rev) {
255		int i;
256		unsigned char ctmp;
257		for(i = 0; i < rsa_inlen/2; i++) {
258			ctmp = rsa_in[i];
259			rsa_in[i] = rsa_in[rsa_inlen - 1 - i];
260			rsa_in[rsa_inlen - 1 - i] = ctmp;
261		}
262	}
263	switch(rsa_mode) {
264
265		case RSA_VERIFY:
266			rsa_outlen  = RSA_public_decrypt(rsa_inlen, rsa_in, rsa_out, rsa, pad);
267		break;
268
269		case RSA_SIGN:
270			rsa_outlen  = RSA_private_encrypt(rsa_inlen, rsa_in, rsa_out, rsa, pad);
271		break;
272
273		case RSA_ENCRYPT:
274			rsa_outlen  = RSA_public_encrypt(rsa_inlen, rsa_in, rsa_out, rsa, pad);
275		break;
276
277		case RSA_DECRYPT:
278			rsa_outlen  = RSA_private_decrypt(rsa_inlen, rsa_in, rsa_out, rsa, pad);
279		break;
280
281	}
282
283	if(rsa_outlen <= 0) {
284		BIO_printf(bio_err, "RSA operation error\n");
285		ERR_print_errors(bio_err);
286		goto end;
287	}
288	ret = 0;
289	if(asn1parse) {
290		if(!ASN1_parse_dump(out, rsa_out, rsa_outlen, 1, -1)) {
291			ERR_print_errors(bio_err);
292		}
293	} else if(hexdump) BIO_dump(out, (char *)rsa_out, rsa_outlen);
294	else BIO_write(out, rsa_out, rsa_outlen);
295	end:
296	RSA_free(rsa);
297	BIO_free(in);
298	BIO_free_all(out);
299	if(rsa_in) OPENSSL_free(rsa_in);
300	if(rsa_out) OPENSSL_free(rsa_out);
301	if(passin) OPENSSL_free(passin);
302	return ret;
303}
304
305static void usage()
306{
307	BIO_printf(bio_err, "Usage: rsautl [options]\n");
308	BIO_printf(bio_err, "-in file        input file\n");
309	BIO_printf(bio_err, "-out file       output file\n");
310	BIO_printf(bio_err, "-inkey file     input key\n");
311	BIO_printf(bio_err, "-keyform arg    private key format - default PEM\n");
312	BIO_printf(bio_err, "-pubin          input is an RSA public\n");
313	BIO_printf(bio_err, "-certin         input is a certificate carrying an RSA public key\n");
314	BIO_printf(bio_err, "-ssl            use SSL v2 padding\n");
315	BIO_printf(bio_err, "-raw            use no padding\n");
316	BIO_printf(bio_err, "-pkcs           use PKCS#1 v1.5 padding (default)\n");
317	BIO_printf(bio_err, "-oaep           use PKCS#1 OAEP\n");
318	BIO_printf(bio_err, "-sign           sign with private key\n");
319	BIO_printf(bio_err, "-verify         verify with public key\n");
320	BIO_printf(bio_err, "-encrypt        encrypt with public key\n");
321	BIO_printf(bio_err, "-decrypt        decrypt with private key\n");
322	BIO_printf(bio_err, "-hexdump        hex dump output\n");
323#ifndef OPENSSL_NO_ENGINE
324	BIO_printf(bio_err, "-engine e       use engine e, possibly a hardware device.\n");
325	BIO_printf (bio_err, "-passin arg    pass phrase source\n");
326#endif
327
328}
329
330#endif
331