Annotation of src/usr.bin/openssl/rsautl.c, Revision 1.11
1.11 ! deraadt 1: /* $OpenBSD: rsautl.c,v 1.10 2015/10/17 15:00:11 doug Exp $ */
1.1 jsing 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:
79: static void usage(void);
80:
81: int
82: rsautl_main(int argc, char **argv)
83: {
84: BIO *in = NULL, *out = NULL;
85: char *infile = NULL, *outfile = NULL;
86: char *keyfile = NULL;
87: char rsa_mode = RSA_VERIFY, key_type = KEY_PRIVKEY;
88: int keyform = FORMAT_PEM;
89: char need_priv = 0, badarg = 0, rev = 0;
90: char hexdump = 0, asn1parse = 0;
91: X509 *x;
92: EVP_PKEY *pkey = NULL;
93: RSA *rsa = NULL;
94: unsigned char *rsa_in = NULL, *rsa_out = NULL, pad;
95: char *passargin = NULL, *passin = NULL;
96: int rsa_inlen, rsa_outlen = 0;
97: int keysize;
98:
99: int ret = 1;
1.8 doug 100:
101: if (single_execution) {
1.11 ! deraadt 102: if (pledge("stdio cpath wpath rpath tty", NULL) == -1) {
1.8 doug 103: perror("pledge");
1.10 doug 104: exit(1);
105: }
1.8 doug 106: }
1.1 jsing 107:
108: argc--;
109: argv++;
110:
111: pad = RSA_PKCS1_PADDING;
112:
113: while (argc >= 1) {
114: if (!strcmp(*argv, "-in")) {
115: if (--argc < 1)
116: badarg = 1;
117: else
118: infile = *(++argv);
119: } else if (!strcmp(*argv, "-out")) {
120: if (--argc < 1)
121: badarg = 1;
122: else
123: outfile = *(++argv);
124: } else if (!strcmp(*argv, "-inkey")) {
125: if (--argc < 1)
126: badarg = 1;
127: else
128: keyfile = *(++argv);
129: } else if (!strcmp(*argv, "-passin")) {
130: if (--argc < 1)
131: badarg = 1;
132: else
133: passargin = *(++argv);
134: } else if (strcmp(*argv, "-keyform") == 0) {
135: if (--argc < 1)
136: badarg = 1;
137: else
138: keyform = str2fmt(*(++argv));
139: } else if (!strcmp(*argv, "-pubin")) {
140: key_type = KEY_PUBKEY;
141: } else if (!strcmp(*argv, "-certin")) {
142: key_type = KEY_CERT;
143: } else if (!strcmp(*argv, "-asn1parse"))
144: asn1parse = 1;
145: else if (!strcmp(*argv, "-hexdump"))
146: hexdump = 1;
147: else if (!strcmp(*argv, "-raw"))
148: pad = RSA_NO_PADDING;
149: else if (!strcmp(*argv, "-oaep"))
150: pad = RSA_PKCS1_OAEP_PADDING;
151: else if (!strcmp(*argv, "-ssl"))
152: pad = RSA_SSLV23_PADDING;
153: else if (!strcmp(*argv, "-pkcs"))
154: pad = RSA_PKCS1_PADDING;
155: else if (!strcmp(*argv, "-x931"))
156: pad = RSA_X931_PADDING;
157: else if (!strcmp(*argv, "-sign")) {
158: rsa_mode = RSA_SIGN;
159: need_priv = 1;
160: } else if (!strcmp(*argv, "-verify"))
161: rsa_mode = RSA_VERIFY;
162: else if (!strcmp(*argv, "-rev"))
163: rev = 1;
164: else if (!strcmp(*argv, "-encrypt"))
165: rsa_mode = RSA_ENCRYPT;
166: else if (!strcmp(*argv, "-decrypt")) {
167: rsa_mode = RSA_DECRYPT;
168: need_priv = 1;
169: } else
170: badarg = 1;
171: if (badarg) {
172: usage();
173: goto end;
174: }
175: argc--;
176: argv++;
177: }
178:
179: if (need_priv && (key_type != KEY_PRIVKEY)) {
180: BIO_printf(bio_err, "A private key is needed for this operation\n");
181: goto end;
182: }
183: if (!app_passwd(bio_err, passargin, NULL, &passin, NULL)) {
184: BIO_printf(bio_err, "Error getting password\n");
185: goto end;
186: }
187:
188: switch (key_type) {
189: case KEY_PRIVKEY:
190: pkey = load_key(bio_err, keyfile, keyform, 0,
1.7 bcook 191: passin, "Private Key");
1.1 jsing 192: break;
193:
194: case KEY_PUBKEY:
195: pkey = load_pubkey(bio_err, keyfile, keyform, 0,
1.7 bcook 196: NULL, "Public Key");
1.1 jsing 197: break;
198:
199: case KEY_CERT:
200: x = load_cert(bio_err, keyfile, keyform,
1.7 bcook 201: NULL, "Certificate");
1.1 jsing 202: if (x) {
203: pkey = X509_get_pubkey(x);
204: X509_free(x);
205: }
206: break;
207: }
208:
1.5 doug 209: if (!pkey)
210: goto end;
211:
1.1 jsing 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: if (infile) {
221: if (!(in = BIO_new_file(infile, "rb"))) {
222: BIO_printf(bio_err, "Error Reading Input File\n");
223: ERR_print_errors(bio_err);
224: goto end;
225: }
226: } else
227: in = BIO_new_fp(stdin, BIO_NOCLOSE);
228:
229: if (outfile) {
230: if (!(out = BIO_new_file(outfile, "wb"))) {
231: BIO_printf(bio_err, "Error Reading Output File\n");
232: ERR_print_errors(bio_err);
233: goto end;
234: }
235: } else {
236: out = BIO_new_fp(stdout, BIO_NOCLOSE);
237: }
238:
239: keysize = RSA_size(rsa);
240:
241: rsa_in = reallocarray(NULL, keysize, 2);
1.4 lteo 242: if (rsa_in == NULL) {
243: BIO_printf(bio_err, "Error allocating memory for input data\n");
244: exit(1);
245: }
1.1 jsing 246: rsa_out = malloc(keysize);
1.4 lteo 247: if (rsa_out == NULL) {
248: BIO_printf(bio_err, "Error allocating memory for output data\n");
249: exit(1);
250: }
1.1 jsing 251:
252: /* Read the input data */
253: rsa_inlen = BIO_read(in, rsa_in, keysize * 2);
254: if (rsa_inlen <= 0) {
255: BIO_printf(bio_err, "Error reading input Data\n");
256: exit(1);
257: }
258: if (rev) {
259: int i;
260: unsigned char ctmp;
261: for (i = 0; i < rsa_inlen / 2; i++) {
262: ctmp = rsa_in[i];
263: rsa_in[i] = rsa_in[rsa_inlen - 1 - i];
264: rsa_in[rsa_inlen - 1 - i] = ctmp;
265: }
266: }
267: switch (rsa_mode) {
268:
269: case RSA_VERIFY:
270: rsa_outlen = RSA_public_decrypt(rsa_inlen, rsa_in, rsa_out, rsa, pad);
271: break;
272:
273: case RSA_SIGN:
274: rsa_outlen = RSA_private_encrypt(rsa_inlen, rsa_in, rsa_out, rsa, pad);
275: break;
276:
277: case RSA_ENCRYPT:
278: rsa_outlen = RSA_public_encrypt(rsa_inlen, rsa_in, rsa_out, rsa, pad);
279: break;
280:
281: case RSA_DECRYPT:
282: rsa_outlen = RSA_private_decrypt(rsa_inlen, rsa_in, rsa_out, rsa, pad);
283: break;
284:
285: }
286:
287: if (rsa_outlen <= 0) {
288: BIO_printf(bio_err, "RSA operation error\n");
289: ERR_print_errors(bio_err);
290: goto end;
291: }
292: ret = 0;
293: if (asn1parse) {
294: if (!ASN1_parse_dump(out, rsa_out, rsa_outlen, 1, -1)) {
295: ERR_print_errors(bio_err);
296: }
297: } else if (hexdump)
298: BIO_dump(out, (char *) rsa_out, rsa_outlen);
299: else
300: BIO_write(out, rsa_out, rsa_outlen);
301:
302: end:
303: RSA_free(rsa);
304: BIO_free(in);
305: BIO_free_all(out);
306: free(rsa_in);
307: free(rsa_out);
308: free(passin);
309:
310: return ret;
311: }
312:
313: static void
314: usage()
315: {
316: BIO_printf(bio_err, "Usage: rsautl [options]\n");
317: BIO_printf(bio_err, "-in file input file\n");
318: BIO_printf(bio_err, "-out file output file\n");
319: BIO_printf(bio_err, "-inkey file input key\n");
320: BIO_printf(bio_err, "-keyform arg private key format - default PEM\n");
321: BIO_printf(bio_err, "-pubin input is an RSA public\n");
322: BIO_printf(bio_err, "-certin input is a certificate carrying an RSA public key\n");
323: BIO_printf(bio_err, "-ssl use SSL v2 padding\n");
324: BIO_printf(bio_err, "-raw use no padding\n");
325: BIO_printf(bio_err, "-pkcs use PKCS#1 v1.5 padding (default)\n");
326: BIO_printf(bio_err, "-oaep use PKCS#1 OAEP\n");
327: BIO_printf(bio_err, "-sign sign with private key\n");
328: BIO_printf(bio_err, "-verify verify with public key\n");
329: BIO_printf(bio_err, "-encrypt encrypt with public key\n");
330: BIO_printf(bio_err, "-decrypt decrypt with private key\n");
331: BIO_printf(bio_err, "-hexdump hex dump output\n");
332: }