Annotation of src/usr.bin/openssl/rsautl.c, Revision 1.4
1.4 ! lteo 1: /* $OpenBSD: rsautl.c,v 1.3 2014/08/28 14:25:48 jsing 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 rsautl_main(int argc, char **);
82:
83: int
84: rsautl_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: pad = RSA_PKCS1_PADDING;
111:
112: while (argc >= 1) {
113: if (!strcmp(*argv, "-in")) {
114: if (--argc < 1)
115: badarg = 1;
116: else
117: infile = *(++argv);
118: } else if (!strcmp(*argv, "-out")) {
119: if (--argc < 1)
120: badarg = 1;
121: else
122: outfile = *(++argv);
123: } else if (!strcmp(*argv, "-inkey")) {
124: if (--argc < 1)
125: badarg = 1;
126: else
127: keyfile = *(++argv);
128: } else if (!strcmp(*argv, "-passin")) {
129: if (--argc < 1)
130: badarg = 1;
131: else
132: passargin = *(++argv);
133: } else if (strcmp(*argv, "-keyform") == 0) {
134: if (--argc < 1)
135: badarg = 1;
136: else
137: keyform = str2fmt(*(++argv));
138: #ifndef OPENSSL_NO_ENGINE
139: } else if (!strcmp(*argv, "-engine")) {
140: if (--argc < 1)
141: badarg = 1;
142: else
143: engine = *(++argv);
144: #endif
145: } else if (!strcmp(*argv, "-pubin")) {
146: key_type = KEY_PUBKEY;
147: } else if (!strcmp(*argv, "-certin")) {
148: key_type = KEY_CERT;
149: } else if (!strcmp(*argv, "-asn1parse"))
150: asn1parse = 1;
151: else if (!strcmp(*argv, "-hexdump"))
152: hexdump = 1;
153: else if (!strcmp(*argv, "-raw"))
154: pad = RSA_NO_PADDING;
155: else if (!strcmp(*argv, "-oaep"))
156: pad = RSA_PKCS1_OAEP_PADDING;
157: else if (!strcmp(*argv, "-ssl"))
158: pad = RSA_SSLV23_PADDING;
159: else if (!strcmp(*argv, "-pkcs"))
160: pad = RSA_PKCS1_PADDING;
161: else if (!strcmp(*argv, "-x931"))
162: pad = RSA_X931_PADDING;
163: else if (!strcmp(*argv, "-sign")) {
164: rsa_mode = RSA_SIGN;
165: need_priv = 1;
166: } else if (!strcmp(*argv, "-verify"))
167: rsa_mode = RSA_VERIFY;
168: else if (!strcmp(*argv, "-rev"))
169: rev = 1;
170: else if (!strcmp(*argv, "-encrypt"))
171: rsa_mode = RSA_ENCRYPT;
172: else if (!strcmp(*argv, "-decrypt")) {
173: rsa_mode = RSA_DECRYPT;
174: need_priv = 1;
175: } else
176: badarg = 1;
177: if (badarg) {
178: usage();
179: goto end;
180: }
181: argc--;
182: argv++;
183: }
184:
185: if (need_priv && (key_type != KEY_PRIVKEY)) {
186: BIO_printf(bio_err, "A private key is needed for this operation\n");
187: goto end;
188: }
189: #ifndef OPENSSL_NO_ENGINE
190: e = setup_engine(bio_err, engine, 0);
191: #endif
192: if (!app_passwd(bio_err, passargin, NULL, &passin, NULL)) {
193: BIO_printf(bio_err, "Error getting password\n");
194: goto end;
195: }
196:
197: switch (key_type) {
198: case KEY_PRIVKEY:
199: pkey = load_key(bio_err, keyfile, keyform, 0,
200: passin, e, "Private Key");
201: break;
202:
203: case KEY_PUBKEY:
204: pkey = load_pubkey(bio_err, keyfile, keyform, 0,
205: NULL, e, "Public Key");
206: break;
207:
208: case KEY_CERT:
209: x = load_cert(bio_err, keyfile, keyform,
210: NULL, e, "Certificate");
211: if (x) {
212: pkey = X509_get_pubkey(x);
213: X509_free(x);
214: }
215: break;
216: }
217:
218: if (!pkey) {
219: return 1;
220: }
221: rsa = EVP_PKEY_get1_RSA(pkey);
222: EVP_PKEY_free(pkey);
223:
224: if (!rsa) {
225: BIO_printf(bio_err, "Error getting RSA key\n");
226: ERR_print_errors(bio_err);
227: goto end;
228: }
229: if (infile) {
230: if (!(in = BIO_new_file(infile, "rb"))) {
231: BIO_printf(bio_err, "Error Reading Input File\n");
232: ERR_print_errors(bio_err);
233: goto end;
234: }
235: } else
236: in = BIO_new_fp(stdin, BIO_NOCLOSE);
237:
238: if (outfile) {
239: if (!(out = BIO_new_file(outfile, "wb"))) {
240: BIO_printf(bio_err, "Error Reading Output File\n");
241: ERR_print_errors(bio_err);
242: goto end;
243: }
244: } else {
245: out = BIO_new_fp(stdout, BIO_NOCLOSE);
246: }
247:
248: keysize = RSA_size(rsa);
249:
250: rsa_in = reallocarray(NULL, keysize, 2);
1.4 ! lteo 251: if (rsa_in == NULL) {
! 252: BIO_printf(bio_err, "Error allocating memory for input data\n");
! 253: exit(1);
! 254: }
1.1 jsing 255: rsa_out = malloc(keysize);
1.4 ! lteo 256: if (rsa_out == NULL) {
! 257: BIO_printf(bio_err, "Error allocating memory for output data\n");
! 258: exit(1);
! 259: }
1.1 jsing 260:
261: /* Read the input data */
262: rsa_inlen = BIO_read(in, rsa_in, keysize * 2);
263: if (rsa_inlen <= 0) {
264: BIO_printf(bio_err, "Error reading input Data\n");
265: exit(1);
266: }
267: if (rev) {
268: int i;
269: unsigned char ctmp;
270: for (i = 0; i < rsa_inlen / 2; i++) {
271: ctmp = rsa_in[i];
272: rsa_in[i] = rsa_in[rsa_inlen - 1 - i];
273: rsa_in[rsa_inlen - 1 - i] = ctmp;
274: }
275: }
276: switch (rsa_mode) {
277:
278: case RSA_VERIFY:
279: rsa_outlen = RSA_public_decrypt(rsa_inlen, rsa_in, rsa_out, rsa, pad);
280: break;
281:
282: case RSA_SIGN:
283: rsa_outlen = RSA_private_encrypt(rsa_inlen, rsa_in, rsa_out, rsa, pad);
284: break;
285:
286: case RSA_ENCRYPT:
287: rsa_outlen = RSA_public_encrypt(rsa_inlen, rsa_in, rsa_out, rsa, pad);
288: break;
289:
290: case RSA_DECRYPT:
291: rsa_outlen = RSA_private_decrypt(rsa_inlen, rsa_in, rsa_out, rsa, pad);
292: break;
293:
294: }
295:
296: if (rsa_outlen <= 0) {
297: BIO_printf(bio_err, "RSA operation error\n");
298: ERR_print_errors(bio_err);
299: goto end;
300: }
301: ret = 0;
302: if (asn1parse) {
303: if (!ASN1_parse_dump(out, rsa_out, rsa_outlen, 1, -1)) {
304: ERR_print_errors(bio_err);
305: }
306: } else if (hexdump)
307: BIO_dump(out, (char *) rsa_out, rsa_outlen);
308: else
309: BIO_write(out, rsa_out, rsa_outlen);
310:
311: end:
312: RSA_free(rsa);
313: BIO_free(in);
314: BIO_free_all(out);
315: free(rsa_in);
316: free(rsa_out);
317: free(passin);
318:
319: return ret;
320: }
321:
322: static void
323: usage()
324: {
325: BIO_printf(bio_err, "Usage: rsautl [options]\n");
326: BIO_printf(bio_err, "-in file input file\n");
327: BIO_printf(bio_err, "-out file output file\n");
328: BIO_printf(bio_err, "-inkey file input key\n");
329: BIO_printf(bio_err, "-keyform arg private key format - default PEM\n");
330: BIO_printf(bio_err, "-pubin input is an RSA public\n");
331: BIO_printf(bio_err, "-certin input is a certificate carrying an RSA public key\n");
332: BIO_printf(bio_err, "-ssl use SSL v2 padding\n");
333: BIO_printf(bio_err, "-raw use no padding\n");
334: BIO_printf(bio_err, "-pkcs use PKCS#1 v1.5 padding (default)\n");
335: BIO_printf(bio_err, "-oaep use PKCS#1 OAEP\n");
336: BIO_printf(bio_err, "-sign sign with private key\n");
337: BIO_printf(bio_err, "-verify verify with public key\n");
338: BIO_printf(bio_err, "-encrypt encrypt with public key\n");
339: BIO_printf(bio_err, "-decrypt decrypt with private key\n");
340: BIO_printf(bio_err, "-hexdump hex dump output\n");
341: #ifndef OPENSSL_NO_ENGINE
342: BIO_printf(bio_err, "-engine e use engine e, possibly a hardware device.\n");
343: BIO_printf(bio_err, "-passin arg pass phrase source\n");
344: #endif
345:
346: }
347:
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