Annotation of src/usr.bin/openssl/genrsa.c, Revision 1.7
1.7 ! semarie 1: /* $OpenBSD: genrsa.c,v 1.6 2015/10/10 22:28:51 doug Exp $ */
1.1 jsing 2: /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
3: * All rights reserved.
4: *
5: * This package is an SSL implementation written
6: * by Eric Young (eay@cryptsoft.com).
7: * The implementation was written so as to conform with Netscapes SSL.
8: *
9: * This library is free for commercial and non-commercial use as long as
10: * the following conditions are aheared to. The following conditions
11: * apply to all code found in this distribution, be it the RC4, RSA,
12: * lhash, DES, etc., code; not just the SSL code. The SSL documentation
13: * included with this distribution is covered by the same copyright terms
14: * except that the holder is Tim Hudson (tjh@cryptsoft.com).
15: *
16: * Copyright remains Eric Young's, and as such any Copyright notices in
17: * the code are not to be removed.
18: * If this package is used in a product, Eric Young should be given attribution
19: * as the author of the parts of the library used.
20: * This can be in the form of a textual message at program startup or
21: * in documentation (online or textual) provided with the package.
22: *
23: * Redistribution and use in source and binary forms, with or without
24: * modification, are permitted provided that the following conditions
25: * are met:
26: * 1. Redistributions of source code must retain the copyright
27: * notice, this list of conditions and the following disclaimer.
28: * 2. Redistributions in binary form must reproduce the above copyright
29: * notice, this list of conditions and the following disclaimer in the
30: * documentation and/or other materials provided with the distribution.
31: * 3. All advertising materials mentioning features or use of this software
32: * must display the following acknowledgement:
33: * "This product includes cryptographic software written by
34: * Eric Young (eay@cryptsoft.com)"
35: * The word 'cryptographic' can be left out if the rouines from the library
36: * being used are not cryptographic related :-).
37: * 4. If you include any Windows specific code (or a derivative thereof) from
38: * the apps directory (application code) you must include an acknowledgement:
39: * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
40: *
41: * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44: * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
51: * SUCH DAMAGE.
52: *
53: * The licence and distribution terms for any publically available version or
54: * derivative of this code cannot be changed. i.e. this code cannot simply be
55: * copied and put under another distribution licence
56: * [including the GNU Public Licence.]
57: */
58:
59: #include <openssl/opensslconf.h>
60:
61: /* Until the key-gen callbacks are modified to use newer prototypes, we allow
62: * deprecated functions for openssl-internal code */
63: #ifdef OPENSSL_NO_DEPRECATED
64: #undef OPENSSL_NO_DEPRECATED
65: #endif
66:
67:
68: #include <sys/types.h>
69: #include <sys/stat.h>
70:
71: #include <stdio.h>
72: #include <string.h>
73:
74: #include "apps.h"
75:
76: #include <openssl/bio.h>
77: #include <openssl/bn.h>
78: #include <openssl/err.h>
79: #include <openssl/evp.h>
80: #include <openssl/pem.h>
81: #include <openssl/rsa.h>
82: #include <openssl/x509.h>
83:
84: #define DEFBITS 2048
85:
86: static int genrsa_cb(int p, int n, BN_GENCB * cb);
87:
88: int
89: genrsa_main(int argc, char **argv)
90: {
91: BN_GENCB cb;
92: int ret = 1;
93: int i, num = DEFBITS;
94: long l;
95: const EVP_CIPHER *enc = NULL;
96: unsigned long f4 = RSA_F4;
97: char *outfile = NULL;
98: char *passargout = NULL, *passout = NULL;
99: BIO *out = NULL;
100: BIGNUM *bn = BN_new();
101: RSA *rsa = NULL;
1.6 doug 102:
103: if (single_execution) {
1.7 ! semarie 104: if (pledge("stdio rpath wpath cpath tty", NULL) == -1)
1.6 doug 105: perror("pledge");
106: }
1.1 jsing 107:
108: if (!bn)
109: goto err;
110:
111: BN_GENCB_set(&cb, genrsa_cb, bio_err);
112:
113: if ((out = BIO_new(BIO_s_file())) == NULL) {
114: BIO_printf(bio_err, "unable to create BIO for output\n");
115: goto err;
116: }
117: argv++;
118: argc--;
119: for (;;) {
120: if (argc <= 0)
121: break;
122: if (strcmp(*argv, "-out") == 0) {
123: if (--argc < 1)
124: goto bad;
125: outfile = *(++argv);
126: } else if (strcmp(*argv, "-3") == 0)
127: f4 = 3;
128: else if (strcmp(*argv, "-F4") == 0 || strcmp(*argv, "-f4") == 0)
129: f4 = RSA_F4;
130: #ifndef OPENSSL_NO_DES
131: else if (strcmp(*argv, "-des") == 0)
132: enc = EVP_des_cbc();
133: else if (strcmp(*argv, "-des3") == 0)
134: enc = EVP_des_ede3_cbc();
135: #endif
136: #ifndef OPENSSL_NO_IDEA
137: else if (strcmp(*argv, "-idea") == 0)
138: enc = EVP_idea_cbc();
139: #endif
140: #ifndef OPENSSL_NO_AES
141: else if (strcmp(*argv, "-aes128") == 0)
142: enc = EVP_aes_128_cbc();
143: else if (strcmp(*argv, "-aes192") == 0)
144: enc = EVP_aes_192_cbc();
145: else if (strcmp(*argv, "-aes256") == 0)
146: enc = EVP_aes_256_cbc();
147: #endif
148: #ifndef OPENSSL_NO_CAMELLIA
149: else if (strcmp(*argv, "-camellia128") == 0)
150: enc = EVP_camellia_128_cbc();
151: else if (strcmp(*argv, "-camellia192") == 0)
152: enc = EVP_camellia_192_cbc();
153: else if (strcmp(*argv, "-camellia256") == 0)
154: enc = EVP_camellia_256_cbc();
155: #endif
156: else if (strcmp(*argv, "-passout") == 0) {
157: if (--argc < 1)
158: goto bad;
159: passargout = *(++argv);
160: } else
161: break;
162: argv++;
163: argc--;
164: }
165: if ((argc >= 1) && ((sscanf(*argv, "%d", &num) == 0) || (num < 0))) {
166: bad:
167: BIO_printf(bio_err, "usage: genrsa [args] [numbits]\n");
168: BIO_printf(bio_err, " -des encrypt the generated key with DES in cbc mode\n");
169: BIO_printf(bio_err, " -des3 encrypt the generated key with DES in ede cbc mode (168 bit key)\n");
170: #ifndef OPENSSL_NO_IDEA
171: BIO_printf(bio_err, " -idea encrypt the generated key with IDEA in cbc mode\n");
172: #endif
173: #ifndef OPENSSL_NO_AES
174: BIO_printf(bio_err, " -aes128, -aes192, -aes256\n");
175: BIO_printf(bio_err, " encrypt PEM output with cbc aes\n");
176: #endif
177: #ifndef OPENSSL_NO_CAMELLIA
178: BIO_printf(bio_err, " -camellia128, -camellia192, -camellia256\n");
179: BIO_printf(bio_err, " encrypt PEM output with cbc camellia\n");
180: #endif
181: BIO_printf(bio_err, " -out file output the key to 'file\n");
182: BIO_printf(bio_err, " -passout arg output file pass phrase source\n");
183: BIO_printf(bio_err, " -f4 use F4 (0x10001) for the E value\n");
184: BIO_printf(bio_err, " -3 use 3 for the E value\n");
185: goto err;
186: }
187:
188: if (!app_passwd(bio_err, NULL, passargout, NULL, &passout)) {
189: BIO_printf(bio_err, "Error getting password\n");
190: goto err;
191: }
192:
193: if (outfile == NULL) {
194: BIO_set_fp(out, stdout, BIO_NOCLOSE);
195: } else {
196: if (BIO_write_filename(out, outfile) <= 0) {
197: perror(outfile);
198: goto err;
199: }
200: }
201:
202: BIO_printf(bio_err, "Generating RSA private key, %d bit long modulus\n",
203: num);
204: rsa = RSA_new();
205: if (!rsa)
206: goto err;
207:
208: if (!BN_set_word(bn, f4) || !RSA_generate_key_ex(rsa, num, bn, &cb))
209: goto err;
210:
211: /*
212: * We need to do the following for when the base number size is <
213: * long, esp windows 3.1 :-(.
214: */
215: l = 0L;
216: for (i = 0; i < rsa->e->top; i++) {
217: #ifndef _LP64
218: l <<= BN_BITS4;
219: l <<= BN_BITS4;
220: #endif
221: l += rsa->e->d[i];
222: }
223: BIO_printf(bio_err, "e is %ld (0x%lX)\n", l, l);
224: {
225: PW_CB_DATA cb_data;
226: cb_data.password = passout;
227: cb_data.prompt_info = outfile;
228: if (!PEM_write_bio_RSAPrivateKey(out, rsa, enc, NULL, 0,
229: password_callback, &cb_data))
230: goto err;
231: }
232:
233: ret = 0;
234: err:
235: if (bn)
236: BN_free(bn);
237: if (rsa)
238: RSA_free(rsa);
239: if (out)
240: BIO_free_all(out);
241: free(passout);
242: if (ret != 0)
243: ERR_print_errors(bio_err);
244:
245: return (ret);
246: }
247:
248: static int
249: genrsa_cb(int p, int n, BN_GENCB * cb)
250: {
251: char c = '*';
252:
253: if (p == 0)
254: c = '.';
255: if (p == 1)
256: c = '+';
257: if (p == 2)
258: c = '*';
259: if (p == 3)
260: c = '\n';
261: BIO_write(cb->arg, &c, 1);
262: (void) BIO_flush(cb->arg);
263: return 1;
264: }
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