Annotation of src/usr.bin/openssl/rsautl.c, Revision 1.9
1.9 ! semarie 1: /* $OpenBSD: rsautl.c,v 1.8 2015/10/10 22:28:51 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) {
1.9 ! semarie 102: if (pledge("stdio rpath wpath cpath tty", NULL) == -1)
1.8 doug 103: perror("pledge");
104: }
1.1 jsing 105:
106: argc--;
107: argv++;
108:
109: pad = RSA_PKCS1_PADDING;
110:
111: while (argc >= 1) {
112: if (!strcmp(*argv, "-in")) {
113: if (--argc < 1)
114: badarg = 1;
115: else
116: infile = *(++argv);
117: } else if (!strcmp(*argv, "-out")) {
118: if (--argc < 1)
119: badarg = 1;
120: else
121: outfile = *(++argv);
122: } else if (!strcmp(*argv, "-inkey")) {
123: if (--argc < 1)
124: badarg = 1;
125: else
126: keyfile = *(++argv);
127: } else if (!strcmp(*argv, "-passin")) {
128: if (--argc < 1)
129: badarg = 1;
130: else
131: passargin = *(++argv);
132: } else if (strcmp(*argv, "-keyform") == 0) {
133: if (--argc < 1)
134: badarg = 1;
135: else
136: keyform = str2fmt(*(++argv));
137: } else if (!strcmp(*argv, "-pubin")) {
138: key_type = KEY_PUBKEY;
139: } else if (!strcmp(*argv, "-certin")) {
140: key_type = KEY_CERT;
141: } else if (!strcmp(*argv, "-asn1parse"))
142: asn1parse = 1;
143: else if (!strcmp(*argv, "-hexdump"))
144: hexdump = 1;
145: else if (!strcmp(*argv, "-raw"))
146: pad = RSA_NO_PADDING;
147: else if (!strcmp(*argv, "-oaep"))
148: pad = RSA_PKCS1_OAEP_PADDING;
149: else if (!strcmp(*argv, "-ssl"))
150: pad = RSA_SSLV23_PADDING;
151: else if (!strcmp(*argv, "-pkcs"))
152: pad = RSA_PKCS1_PADDING;
153: else if (!strcmp(*argv, "-x931"))
154: pad = RSA_X931_PADDING;
155: else if (!strcmp(*argv, "-sign")) {
156: rsa_mode = RSA_SIGN;
157: need_priv = 1;
158: } else if (!strcmp(*argv, "-verify"))
159: rsa_mode = RSA_VERIFY;
160: else if (!strcmp(*argv, "-rev"))
161: rev = 1;
162: else if (!strcmp(*argv, "-encrypt"))
163: rsa_mode = RSA_ENCRYPT;
164: else if (!strcmp(*argv, "-decrypt")) {
165: rsa_mode = RSA_DECRYPT;
166: need_priv = 1;
167: } else
168: badarg = 1;
169: if (badarg) {
170: usage();
171: goto end;
172: }
173: argc--;
174: argv++;
175: }
176:
177: if (need_priv && (key_type != KEY_PRIVKEY)) {
178: BIO_printf(bio_err, "A private key is needed for this operation\n");
179: goto end;
180: }
181: if (!app_passwd(bio_err, passargin, NULL, &passin, NULL)) {
182: BIO_printf(bio_err, "Error getting password\n");
183: goto end;
184: }
185:
186: switch (key_type) {
187: case KEY_PRIVKEY:
188: pkey = load_key(bio_err, keyfile, keyform, 0,
1.7 bcook 189: passin, "Private Key");
1.1 jsing 190: break;
191:
192: case KEY_PUBKEY:
193: pkey = load_pubkey(bio_err, keyfile, keyform, 0,
1.7 bcook 194: NULL, "Public Key");
1.1 jsing 195: break;
196:
197: case KEY_CERT:
198: x = load_cert(bio_err, keyfile, keyform,
1.7 bcook 199: NULL, "Certificate");
1.1 jsing 200: if (x) {
201: pkey = X509_get_pubkey(x);
202: X509_free(x);
203: }
204: break;
205: }
206:
1.5 doug 207: if (!pkey)
208: goto end;
209:
1.1 jsing 210: rsa = EVP_PKEY_get1_RSA(pkey);
211: EVP_PKEY_free(pkey);
212:
213: if (!rsa) {
214: BIO_printf(bio_err, "Error getting RSA key\n");
215: ERR_print_errors(bio_err);
216: goto end;
217: }
218: if (infile) {
219: if (!(in = BIO_new_file(infile, "rb"))) {
220: BIO_printf(bio_err, "Error Reading Input File\n");
221: ERR_print_errors(bio_err);
222: goto end;
223: }
224: } else
225: 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: }
236:
237: keysize = RSA_size(rsa);
238:
239: rsa_in = reallocarray(NULL, keysize, 2);
1.4 lteo 240: if (rsa_in == NULL) {
241: BIO_printf(bio_err, "Error allocating memory for input data\n");
242: exit(1);
243: }
1.1 jsing 244: rsa_out = malloc(keysize);
1.4 lteo 245: if (rsa_out == NULL) {
246: BIO_printf(bio_err, "Error allocating memory for output data\n");
247: exit(1);
248: }
1.1 jsing 249:
250: /* Read the input data */
251: rsa_inlen = BIO_read(in, rsa_in, keysize * 2);
252: if (rsa_inlen <= 0) {
253: BIO_printf(bio_err, "Error reading input Data\n");
254: exit(1);
255: }
256: if (rev) {
257: int i;
258: unsigned char ctmp;
259: for (i = 0; i < rsa_inlen / 2; i++) {
260: ctmp = rsa_in[i];
261: rsa_in[i] = rsa_in[rsa_inlen - 1 - i];
262: rsa_in[rsa_inlen - 1 - i] = ctmp;
263: }
264: }
265: switch (rsa_mode) {
266:
267: case RSA_VERIFY:
268: rsa_outlen = RSA_public_decrypt(rsa_inlen, rsa_in, rsa_out, rsa, pad);
269: break;
270:
271: case RSA_SIGN:
272: rsa_outlen = RSA_private_encrypt(rsa_inlen, rsa_in, rsa_out, rsa, pad);
273: break;
274:
275: case RSA_ENCRYPT:
276: rsa_outlen = RSA_public_encrypt(rsa_inlen, rsa_in, rsa_out, rsa, pad);
277: break;
278:
279: case RSA_DECRYPT:
280: rsa_outlen = RSA_private_decrypt(rsa_inlen, rsa_in, rsa_out, rsa, pad);
281: break;
282:
283: }
284:
285: if (rsa_outlen <= 0) {
286: BIO_printf(bio_err, "RSA operation error\n");
287: ERR_print_errors(bio_err);
288: goto end;
289: }
290: ret = 0;
291: if (asn1parse) {
292: if (!ASN1_parse_dump(out, rsa_out, rsa_outlen, 1, -1)) {
293: ERR_print_errors(bio_err);
294: }
295: } else if (hexdump)
296: BIO_dump(out, (char *) rsa_out, rsa_outlen);
297: else
298: BIO_write(out, rsa_out, rsa_outlen);
299:
300: end:
301: RSA_free(rsa);
302: BIO_free(in);
303: BIO_free_all(out);
304: free(rsa_in);
305: free(rsa_out);
306: free(passin);
307:
308: return ret;
309: }
310:
311: static void
312: usage()
313: {
314: BIO_printf(bio_err, "Usage: rsautl [options]\n");
315: BIO_printf(bio_err, "-in file input file\n");
316: BIO_printf(bio_err, "-out file output file\n");
317: BIO_printf(bio_err, "-inkey file input key\n");
318: BIO_printf(bio_err, "-keyform arg private key format - default PEM\n");
319: BIO_printf(bio_err, "-pubin input is an RSA public\n");
320: BIO_printf(bio_err, "-certin input is a certificate carrying an RSA public key\n");
321: BIO_printf(bio_err, "-ssl use SSL v2 padding\n");
322: BIO_printf(bio_err, "-raw use no padding\n");
323: BIO_printf(bio_err, "-pkcs use PKCS#1 v1.5 padding (default)\n");
324: BIO_printf(bio_err, "-oaep use PKCS#1 OAEP\n");
325: BIO_printf(bio_err, "-sign sign with private key\n");
326: BIO_printf(bio_err, "-verify verify with public key\n");
327: BIO_printf(bio_err, "-encrypt encrypt with public key\n");
328: BIO_printf(bio_err, "-decrypt decrypt with private key\n");
329: BIO_printf(bio_err, "-hexdump hex dump output\n");
330: }
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