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1.2 ! jsing 1: /* $OpenBSD: genpkey.c,v 1.1 2014/08/26 17:47:24 jsing 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: #ifndef OPENSSL_NO_ENGINE
69: #include <openssl/engine.h>
70: #endif
71:
72: static int
73: init_keygen_file(BIO * err, EVP_PKEY_CTX ** pctx, const char *file,
74: ENGINE * e);
75: static int genpkey_cb(EVP_PKEY_CTX * ctx);
76:
77:
78: int genpkey_main(int, char **);
79:
80: int
81: genpkey_main(int argc, char **argv)
82: {
83: ENGINE *e = NULL;
84: char **args, *outfile = NULL;
85: char *passarg = NULL;
86: BIO *in = NULL, *out = NULL;
87: const EVP_CIPHER *cipher = NULL;
88: int outformat;
89: int text = 0;
90: EVP_PKEY *pkey = NULL;
91: EVP_PKEY_CTX *ctx = NULL;
92: char *pass = NULL;
93: int badarg = 0;
94: int ret = 1, rv;
95:
96: int do_param = 0;
97:
98: outformat = FORMAT_PEM;
99:
100: OpenSSL_add_all_algorithms();
101: args = argv + 1;
102: while (!badarg && *args && *args[0] == '-') {
103: if (!strcmp(*args, "-outform")) {
104: if (args[1]) {
105: args++;
106: outformat = str2fmt(*args);
107: } else
108: badarg = 1;
109: } else if (!strcmp(*args, "-pass")) {
110: if (!args[1])
111: goto bad;
112: passarg = *(++args);
113: }
114: #ifndef OPENSSL_NO_ENGINE
115: else if (strcmp(*args, "-engine") == 0) {
116: if (!args[1])
117: goto bad;
118: e = setup_engine(bio_err, *(++args), 0);
119: }
120: #endif
121: else if (!strcmp(*args, "-paramfile")) {
122: if (!args[1])
123: goto bad;
124: args++;
125: if (do_param == 1)
126: goto bad;
127: if (!init_keygen_file(bio_err, &ctx, *args, e))
128: goto end;
129: } else if (!strcmp(*args, "-out")) {
130: if (args[1]) {
131: args++;
132: outfile = *args;
133: } else
134: badarg = 1;
135: } else if (strcmp(*args, "-algorithm") == 0) {
136: if (!args[1])
137: goto bad;
138: if (!init_gen_str(bio_err, &ctx, *(++args), e, do_param))
139: goto end;
140: } else if (strcmp(*args, "-pkeyopt") == 0) {
141: if (!args[1])
142: goto bad;
143: if (!ctx) {
144: BIO_puts(bio_err, "No keytype specified\n");
145: goto bad;
146: } else if (pkey_ctrl_string(ctx, *(++args)) <= 0) {
147: BIO_puts(bio_err, "parameter setting error\n");
148: ERR_print_errors(bio_err);
149: goto end;
150: }
151: } else if (strcmp(*args, "-genparam") == 0) {
152: if (ctx)
153: goto bad;
154: do_param = 1;
155: } else if (strcmp(*args, "-text") == 0)
156: text = 1;
157: else {
158: cipher = EVP_get_cipherbyname(*args + 1);
159: if (!cipher) {
160: BIO_printf(bio_err, "Unknown cipher %s\n",
161: *args + 1);
162: badarg = 1;
163: }
164: if (do_param == 1)
165: badarg = 1;
166: }
167: args++;
168: }
169:
170: if (!ctx)
171: badarg = 1;
172:
173: if (badarg) {
174: bad:
175: BIO_printf(bio_err, "Usage: genpkey [options]\n");
176: BIO_printf(bio_err, "where options may be\n");
177: BIO_printf(bio_err, "-out file output file\n");
178: BIO_printf(bio_err, "-outform X output format (DER or PEM)\n");
179: BIO_printf(bio_err, "-pass arg output file pass phrase source\n");
180: BIO_printf(bio_err, "-<cipher> use cipher <cipher> to encrypt the key\n");
181: #ifndef OPENSSL_NO_ENGINE
182: BIO_printf(bio_err, "-engine e use engine e, possibly a hardware device.\n");
183: #endif
184: BIO_printf(bio_err, "-paramfile file parameters file\n");
185: BIO_printf(bio_err, "-algorithm alg the public key algorithm\n");
186: BIO_printf(bio_err, "-pkeyopt opt:value set the public key algorithm option <opt>\n"
187: " to value <value>\n");
188: BIO_printf(bio_err, "-genparam generate parameters, not key\n");
189: BIO_printf(bio_err, "-text print the in text\n");
190: BIO_printf(bio_err, "NB: options order may be important! See the manual page.\n");
191: goto end;
192: }
193: if (!app_passwd(bio_err, passarg, NULL, &pass, NULL)) {
194: BIO_puts(bio_err, "Error getting password\n");
195: goto end;
196: }
197: if (outfile) {
198: if (!(out = BIO_new_file(outfile, "wb"))) {
199: BIO_printf(bio_err,
200: "Can't open output file %s\n", outfile);
201: goto end;
202: }
203: } else {
204: out = BIO_new_fp(stdout, BIO_NOCLOSE);
205: }
206:
207: EVP_PKEY_CTX_set_cb(ctx, genpkey_cb);
208: EVP_PKEY_CTX_set_app_data(ctx, bio_err);
209:
210: if (do_param) {
211: if (EVP_PKEY_paramgen(ctx, &pkey) <= 0) {
212: BIO_puts(bio_err, "Error generating parameters\n");
213: ERR_print_errors(bio_err);
214: goto end;
215: }
216: } else {
217: if (EVP_PKEY_keygen(ctx, &pkey) <= 0) {
218: BIO_puts(bio_err, "Error generating key\n");
219: ERR_print_errors(bio_err);
220: goto end;
221: }
222: }
223:
224: if (do_param)
225: rv = PEM_write_bio_Parameters(out, pkey);
226: else if (outformat == FORMAT_PEM)
227: rv = PEM_write_bio_PrivateKey(out, pkey, cipher, NULL, 0,
228: NULL, pass);
229: else if (outformat == FORMAT_ASN1)
230: rv = i2d_PrivateKey_bio(out, pkey);
231: else {
232: BIO_printf(bio_err, "Bad format specified for key\n");
233: goto end;
234: }
235:
236: if (rv <= 0) {
237: BIO_puts(bio_err, "Error writing key\n");
238: ERR_print_errors(bio_err);
239: }
240: if (text) {
241: if (do_param)
242: rv = EVP_PKEY_print_params(out, pkey, 0, NULL);
243: else
244: rv = EVP_PKEY_print_private(out, pkey, 0, NULL);
245:
246: if (rv <= 0) {
247: BIO_puts(bio_err, "Error printing key\n");
248: ERR_print_errors(bio_err);
249: }
250: }
251: ret = 0;
252:
253: end:
254: if (pkey)
255: EVP_PKEY_free(pkey);
256: if (ctx)
257: EVP_PKEY_CTX_free(ctx);
258: if (out)
259: BIO_free_all(out);
260: BIO_free(in);
261: free(pass);
262:
263: return ret;
264: }
265:
266: static int
267: init_keygen_file(BIO * err, EVP_PKEY_CTX ** pctx,
268: const char *file, ENGINE * e)
269: {
270: BIO *pbio;
271: EVP_PKEY *pkey = NULL;
272: EVP_PKEY_CTX *ctx = NULL;
273: if (*pctx) {
274: BIO_puts(err, "Parameters already set!\n");
275: return 0;
276: }
277: pbio = BIO_new_file(file, "r");
278: if (!pbio) {
279: BIO_printf(err, "Can't open parameter file %s\n", file);
280: return 0;
281: }
282: pkey = PEM_read_bio_Parameters(pbio, NULL);
283: BIO_free(pbio);
284:
285: if (!pkey) {
286: BIO_printf(bio_err, "Error reading parameter file %s\n", file);
287: return 0;
288: }
289: ctx = EVP_PKEY_CTX_new(pkey, e);
290: if (!ctx)
291: goto err;
292: if (EVP_PKEY_keygen_init(ctx) <= 0)
293: goto err;
294: EVP_PKEY_free(pkey);
295: *pctx = ctx;
296: return 1;
297:
298: err:
299: BIO_puts(err, "Error initializing context\n");
300: ERR_print_errors(err);
301: if (ctx)
302: EVP_PKEY_CTX_free(ctx);
303: if (pkey)
304: EVP_PKEY_free(pkey);
305: return 0;
306:
307: }
308:
309: int
310: init_gen_str(BIO * err, EVP_PKEY_CTX ** pctx,
311: const char *algname, ENGINE * e, int do_param)
312: {
313: EVP_PKEY_CTX *ctx = NULL;
314: const EVP_PKEY_ASN1_METHOD *ameth;
315: ENGINE *tmpeng = NULL;
316: int pkey_id;
317:
318: if (*pctx) {
319: BIO_puts(err, "Algorithm already set!\n");
320: return 0;
321: }
322: ameth = EVP_PKEY_asn1_find_str(&tmpeng, algname, -1);
323:
324: #ifndef OPENSSL_NO_ENGINE
325: if (!ameth && e)
326: ameth = ENGINE_get_pkey_asn1_meth_str(e, algname, -1);
327: #endif
328:
329: if (!ameth) {
330: BIO_printf(bio_err, "Algorithm %s not found\n", algname);
331: return 0;
332: }
333: ERR_clear_error();
334:
335: EVP_PKEY_asn1_get0_info(&pkey_id, NULL, NULL, NULL, NULL, ameth);
336: #ifndef OPENSSL_NO_ENGINE
337: if (tmpeng)
338: ENGINE_finish(tmpeng);
339: #endif
340: ctx = EVP_PKEY_CTX_new_id(pkey_id, e);
341:
342: if (!ctx)
343: goto err;
344: if (do_param) {
345: if (EVP_PKEY_paramgen_init(ctx) <= 0)
346: goto err;
347: } else {
348: if (EVP_PKEY_keygen_init(ctx) <= 0)
349: goto err;
350: }
351:
352: *pctx = ctx;
353: return 1;
354:
355: err:
356: BIO_printf(err, "Error initializing %s context\n", algname);
357: ERR_print_errors(err);
358: if (ctx)
359: EVP_PKEY_CTX_free(ctx);
360: return 0;
361:
362: }
363:
364: static int
365: genpkey_cb(EVP_PKEY_CTX * ctx)
366: {
367: char c = '*';
368: BIO *b = EVP_PKEY_CTX_get_app_data(ctx);
369: int p;
370: p = EVP_PKEY_CTX_get_keygen_info(ctx, 0);
371: if (p == 0)
372: c = '.';
373: if (p == 1)
374: c = '+';
375: if (p == 2)
376: c = '*';
377: if (p == 3)
378: c = '\n';
379: BIO_write(b, &c, 1);
380: (void) BIO_flush(b);
381: return 1;
382: }