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1.8 ! doug 1: /* $OpenBSD: genpkey.c,v 1.7 2015/10/17 07:51:10 semarie Exp $ */
1.1 jsing 2: /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
3: * project 2006
4: */
5: /* ====================================================================
6: * Copyright (c) 2006 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 <stdio.h>
60: #include <string.h>
61:
62: #include "apps.h"
63:
64: #include <openssl/err.h>
65: #include <openssl/evp.h>
66: #include <openssl/pem.h>
67:
68: static int
1.5 bcook 69: init_keygen_file(BIO * err, EVP_PKEY_CTX ** pctx, const char *file);
1.1 jsing 70: static int genpkey_cb(EVP_PKEY_CTX * ctx);
71:
72: int
73: genpkey_main(int argc, char **argv)
74: {
75: char **args, *outfile = NULL;
76: char *passarg = NULL;
77: BIO *in = NULL, *out = NULL;
78: const EVP_CIPHER *cipher = NULL;
79: int outformat;
80: int text = 0;
81: EVP_PKEY *pkey = NULL;
82: EVP_PKEY_CTX *ctx = NULL;
83: char *pass = NULL;
84: int badarg = 0;
85: int ret = 1, rv;
86:
87: int do_param = 0;
1.6 doug 88:
89: if (single_execution) {
1.8 ! doug 90: if (pledge("stdio rpath wpath cpath tty", NULL) == -1) {
1.6 doug 91: perror("pledge");
1.8 ! doug 92: exit(1);
! 93: }
1.6 doug 94: }
1.1 jsing 95:
96: outformat = FORMAT_PEM;
97:
98: args = argv + 1;
99: while (!badarg && *args && *args[0] == '-') {
100: if (!strcmp(*args, "-outform")) {
101: if (args[1]) {
102: args++;
103: outformat = str2fmt(*args);
104: } else
105: badarg = 1;
106: } else if (!strcmp(*args, "-pass")) {
107: if (!args[1])
108: goto bad;
109: passarg = *(++args);
110: }
111: else if (!strcmp(*args, "-paramfile")) {
112: if (!args[1])
113: goto bad;
114: args++;
115: if (do_param == 1)
116: goto bad;
1.5 bcook 117: if (!init_keygen_file(bio_err, &ctx, *args))
1.1 jsing 118: goto end;
119: } else if (!strcmp(*args, "-out")) {
120: if (args[1]) {
121: args++;
122: outfile = *args;
123: } else
124: badarg = 1;
125: } else if (strcmp(*args, "-algorithm") == 0) {
126: if (!args[1])
127: goto bad;
1.5 bcook 128: if (!init_gen_str(bio_err, &ctx, *(++args), do_param))
1.1 jsing 129: goto end;
130: } else if (strcmp(*args, "-pkeyopt") == 0) {
131: if (!args[1])
132: goto bad;
133: if (!ctx) {
134: BIO_puts(bio_err, "No keytype specified\n");
135: goto bad;
136: } else if (pkey_ctrl_string(ctx, *(++args)) <= 0) {
137: BIO_puts(bio_err, "parameter setting error\n");
138: ERR_print_errors(bio_err);
139: goto end;
140: }
141: } else if (strcmp(*args, "-genparam") == 0) {
142: if (ctx)
143: goto bad;
144: do_param = 1;
145: } else if (strcmp(*args, "-text") == 0)
146: text = 1;
147: else {
148: cipher = EVP_get_cipherbyname(*args + 1);
149: if (!cipher) {
150: BIO_printf(bio_err, "Unknown cipher %s\n",
151: *args + 1);
152: badarg = 1;
153: }
154: if (do_param == 1)
155: badarg = 1;
156: }
157: args++;
158: }
159:
160: if (!ctx)
161: badarg = 1;
162:
163: if (badarg) {
164: bad:
165: BIO_printf(bio_err, "Usage: genpkey [options]\n");
166: BIO_printf(bio_err, "where options may be\n");
167: BIO_printf(bio_err, "-out file output file\n");
168: BIO_printf(bio_err, "-outform X output format (DER or PEM)\n");
169: BIO_printf(bio_err, "-pass arg output file pass phrase source\n");
170: BIO_printf(bio_err, "-<cipher> use cipher <cipher> to encrypt the key\n");
171: BIO_printf(bio_err, "-paramfile file parameters file\n");
172: BIO_printf(bio_err, "-algorithm alg the public key algorithm\n");
173: BIO_printf(bio_err, "-pkeyopt opt:value set the public key algorithm option <opt>\n"
174: " to value <value>\n");
175: BIO_printf(bio_err, "-genparam generate parameters, not key\n");
176: BIO_printf(bio_err, "-text print the in text\n");
177: BIO_printf(bio_err, "NB: options order may be important! See the manual page.\n");
178: goto end;
179: }
180: if (!app_passwd(bio_err, passarg, NULL, &pass, NULL)) {
181: BIO_puts(bio_err, "Error getting password\n");
182: goto end;
183: }
184: if (outfile) {
185: if (!(out = BIO_new_file(outfile, "wb"))) {
186: BIO_printf(bio_err,
187: "Can't open output file %s\n", outfile);
188: goto end;
189: }
190: } else {
191: out = BIO_new_fp(stdout, BIO_NOCLOSE);
192: }
193:
194: EVP_PKEY_CTX_set_cb(ctx, genpkey_cb);
195: EVP_PKEY_CTX_set_app_data(ctx, bio_err);
196:
197: if (do_param) {
198: if (EVP_PKEY_paramgen(ctx, &pkey) <= 0) {
199: BIO_puts(bio_err, "Error generating parameters\n");
200: ERR_print_errors(bio_err);
201: goto end;
202: }
203: } else {
204: if (EVP_PKEY_keygen(ctx, &pkey) <= 0) {
205: BIO_puts(bio_err, "Error generating key\n");
206: ERR_print_errors(bio_err);
207: goto end;
208: }
209: }
210:
211: if (do_param)
212: rv = PEM_write_bio_Parameters(out, pkey);
213: else if (outformat == FORMAT_PEM)
214: rv = PEM_write_bio_PrivateKey(out, pkey, cipher, NULL, 0,
215: NULL, pass);
216: else if (outformat == FORMAT_ASN1)
217: rv = i2d_PrivateKey_bio(out, pkey);
218: else {
219: BIO_printf(bio_err, "Bad format specified for key\n");
220: goto end;
221: }
222:
223: if (rv <= 0) {
224: BIO_puts(bio_err, "Error writing key\n");
225: ERR_print_errors(bio_err);
226: }
227: if (text) {
228: if (do_param)
229: rv = EVP_PKEY_print_params(out, pkey, 0, NULL);
230: else
231: rv = EVP_PKEY_print_private(out, pkey, 0, NULL);
232:
233: if (rv <= 0) {
234: BIO_puts(bio_err, "Error printing key\n");
235: ERR_print_errors(bio_err);
236: }
237: }
238: ret = 0;
239:
240: end:
241: if (pkey)
242: EVP_PKEY_free(pkey);
243: if (ctx)
244: EVP_PKEY_CTX_free(ctx);
245: if (out)
246: BIO_free_all(out);
247: BIO_free(in);
248: free(pass);
249:
250: return ret;
251: }
252:
253: static int
254: init_keygen_file(BIO * err, EVP_PKEY_CTX ** pctx,
1.5 bcook 255: const char *file)
1.1 jsing 256: {
257: BIO *pbio;
258: EVP_PKEY *pkey = NULL;
259: EVP_PKEY_CTX *ctx = NULL;
260: if (*pctx) {
261: BIO_puts(err, "Parameters already set!\n");
262: return 0;
263: }
264: pbio = BIO_new_file(file, "r");
265: if (!pbio) {
266: BIO_printf(err, "Can't open parameter file %s\n", file);
267: return 0;
268: }
269: pkey = PEM_read_bio_Parameters(pbio, NULL);
270: BIO_free(pbio);
271:
272: if (!pkey) {
273: BIO_printf(bio_err, "Error reading parameter file %s\n", file);
274: return 0;
275: }
1.5 bcook 276: ctx = EVP_PKEY_CTX_new(pkey, NULL);
1.1 jsing 277: if (!ctx)
278: goto err;
279: if (EVP_PKEY_keygen_init(ctx) <= 0)
280: goto err;
281: EVP_PKEY_free(pkey);
282: *pctx = ctx;
283: return 1;
284:
285: err:
286: BIO_puts(err, "Error initializing context\n");
287: ERR_print_errors(err);
288: if (ctx)
289: EVP_PKEY_CTX_free(ctx);
290: if (pkey)
291: EVP_PKEY_free(pkey);
292: return 0;
293:
294: }
295:
296: int
297: init_gen_str(BIO * err, EVP_PKEY_CTX ** pctx,
1.5 bcook 298: const char *algname, int do_param)
1.1 jsing 299: {
300: EVP_PKEY_CTX *ctx = NULL;
301: const EVP_PKEY_ASN1_METHOD *ameth;
302: int pkey_id;
303:
304: if (*pctx) {
305: BIO_puts(err, "Algorithm already set!\n");
306: return 0;
307: }
1.5 bcook 308: ameth = EVP_PKEY_asn1_find_str(NULL, algname, -1);
1.1 jsing 309:
310: if (!ameth) {
311: BIO_printf(bio_err, "Algorithm %s not found\n", algname);
312: return 0;
313: }
314: ERR_clear_error();
315:
316: EVP_PKEY_asn1_get0_info(&pkey_id, NULL, NULL, NULL, NULL, ameth);
1.5 bcook 317: ctx = EVP_PKEY_CTX_new_id(pkey_id, NULL);
1.1 jsing 318:
319: if (!ctx)
320: goto err;
321: if (do_param) {
322: if (EVP_PKEY_paramgen_init(ctx) <= 0)
323: goto err;
324: } else {
325: if (EVP_PKEY_keygen_init(ctx) <= 0)
326: goto err;
327: }
328:
329: *pctx = ctx;
330: return 1;
331:
332: err:
333: BIO_printf(err, "Error initializing %s context\n", algname);
334: ERR_print_errors(err);
335: if (ctx)
336: EVP_PKEY_CTX_free(ctx);
337: return 0;
338:
339: }
340:
341: static int
342: genpkey_cb(EVP_PKEY_CTX * ctx)
343: {
344: char c = '*';
345: BIO *b = EVP_PKEY_CTX_get_app_data(ctx);
346: int p;
347: p = EVP_PKEY_CTX_get_keygen_info(ctx, 0);
348: if (p == 0)
349: c = '.';
350: if (p == 1)
351: c = '+';
352: if (p == 2)
353: c = '*';
354: if (p == 3)
355: c = '\n';
356: BIO_write(b, &c, 1);
357: (void) BIO_flush(b);
358: return 1;
359: }