Annotation of src/usr.bin/openssl/genpkey.c, Revision 1.1
1.1 ! jsing 1: /* $OpenBSD: genpkey.c,v 1.13 2014/07/14 00:35:10 deraadt Exp $ */
! 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: ERR_load_crypto_strings();
! 101: OpenSSL_add_all_algorithms();
! 102: args = argv + 1;
! 103: while (!badarg && *args && *args[0] == '-') {
! 104: if (!strcmp(*args, "-outform")) {
! 105: if (args[1]) {
! 106: args++;
! 107: outformat = str2fmt(*args);
! 108: } else
! 109: badarg = 1;
! 110: } else if (!strcmp(*args, "-pass")) {
! 111: if (!args[1])
! 112: goto bad;
! 113: passarg = *(++args);
! 114: }
! 115: #ifndef OPENSSL_NO_ENGINE
! 116: else if (strcmp(*args, "-engine") == 0) {
! 117: if (!args[1])
! 118: goto bad;
! 119: e = setup_engine(bio_err, *(++args), 0);
! 120: }
! 121: #endif
! 122: else if (!strcmp(*args, "-paramfile")) {
! 123: if (!args[1])
! 124: goto bad;
! 125: args++;
! 126: if (do_param == 1)
! 127: goto bad;
! 128: if (!init_keygen_file(bio_err, &ctx, *args, e))
! 129: goto end;
! 130: } else if (!strcmp(*args, "-out")) {
! 131: if (args[1]) {
! 132: args++;
! 133: outfile = *args;
! 134: } else
! 135: badarg = 1;
! 136: } else if (strcmp(*args, "-algorithm") == 0) {
! 137: if (!args[1])
! 138: goto bad;
! 139: if (!init_gen_str(bio_err, &ctx, *(++args), e, do_param))
! 140: goto end;
! 141: } else if (strcmp(*args, "-pkeyopt") == 0) {
! 142: if (!args[1])
! 143: goto bad;
! 144: if (!ctx) {
! 145: BIO_puts(bio_err, "No keytype specified\n");
! 146: goto bad;
! 147: } else if (pkey_ctrl_string(ctx, *(++args)) <= 0) {
! 148: BIO_puts(bio_err, "parameter setting error\n");
! 149: ERR_print_errors(bio_err);
! 150: goto end;
! 151: }
! 152: } else if (strcmp(*args, "-genparam") == 0) {
! 153: if (ctx)
! 154: goto bad;
! 155: do_param = 1;
! 156: } else if (strcmp(*args, "-text") == 0)
! 157: text = 1;
! 158: else {
! 159: cipher = EVP_get_cipherbyname(*args + 1);
! 160: if (!cipher) {
! 161: BIO_printf(bio_err, "Unknown cipher %s\n",
! 162: *args + 1);
! 163: badarg = 1;
! 164: }
! 165: if (do_param == 1)
! 166: badarg = 1;
! 167: }
! 168: args++;
! 169: }
! 170:
! 171: if (!ctx)
! 172: badarg = 1;
! 173:
! 174: if (badarg) {
! 175: bad:
! 176: BIO_printf(bio_err, "Usage: genpkey [options]\n");
! 177: BIO_printf(bio_err, "where options may be\n");
! 178: BIO_printf(bio_err, "-out file output file\n");
! 179: BIO_printf(bio_err, "-outform X output format (DER or PEM)\n");
! 180: BIO_printf(bio_err, "-pass arg output file pass phrase source\n");
! 181: BIO_printf(bio_err, "-<cipher> use cipher <cipher> to encrypt the key\n");
! 182: #ifndef OPENSSL_NO_ENGINE
! 183: BIO_printf(bio_err, "-engine e use engine e, possibly a hardware device.\n");
! 184: #endif
! 185: BIO_printf(bio_err, "-paramfile file parameters file\n");
! 186: BIO_printf(bio_err, "-algorithm alg the public key algorithm\n");
! 187: BIO_printf(bio_err, "-pkeyopt opt:value set the public key algorithm option <opt>\n"
! 188: " to value <value>\n");
! 189: BIO_printf(bio_err, "-genparam generate parameters, not key\n");
! 190: BIO_printf(bio_err, "-text print the in text\n");
! 191: BIO_printf(bio_err, "NB: options order may be important! See the manual page.\n");
! 192: goto end;
! 193: }
! 194: if (!app_passwd(bio_err, passarg, NULL, &pass, NULL)) {
! 195: BIO_puts(bio_err, "Error getting password\n");
! 196: goto end;
! 197: }
! 198: if (outfile) {
! 199: if (!(out = BIO_new_file(outfile, "wb"))) {
! 200: BIO_printf(bio_err,
! 201: "Can't open output file %s\n", outfile);
! 202: goto end;
! 203: }
! 204: } else {
! 205: out = BIO_new_fp(stdout, BIO_NOCLOSE);
! 206: }
! 207:
! 208: EVP_PKEY_CTX_set_cb(ctx, genpkey_cb);
! 209: EVP_PKEY_CTX_set_app_data(ctx, bio_err);
! 210:
! 211: if (do_param) {
! 212: if (EVP_PKEY_paramgen(ctx, &pkey) <= 0) {
! 213: BIO_puts(bio_err, "Error generating parameters\n");
! 214: ERR_print_errors(bio_err);
! 215: goto end;
! 216: }
! 217: } else {
! 218: if (EVP_PKEY_keygen(ctx, &pkey) <= 0) {
! 219: BIO_puts(bio_err, "Error generating key\n");
! 220: ERR_print_errors(bio_err);
! 221: goto end;
! 222: }
! 223: }
! 224:
! 225: if (do_param)
! 226: rv = PEM_write_bio_Parameters(out, pkey);
! 227: else if (outformat == FORMAT_PEM)
! 228: rv = PEM_write_bio_PrivateKey(out, pkey, cipher, NULL, 0,
! 229: NULL, pass);
! 230: else if (outformat == FORMAT_ASN1)
! 231: rv = i2d_PrivateKey_bio(out, pkey);
! 232: else {
! 233: BIO_printf(bio_err, "Bad format specified for key\n");
! 234: goto end;
! 235: }
! 236:
! 237: if (rv <= 0) {
! 238: BIO_puts(bio_err, "Error writing key\n");
! 239: ERR_print_errors(bio_err);
! 240: }
! 241: if (text) {
! 242: if (do_param)
! 243: rv = EVP_PKEY_print_params(out, pkey, 0, NULL);
! 244: else
! 245: rv = EVP_PKEY_print_private(out, pkey, 0, NULL);
! 246:
! 247: if (rv <= 0) {
! 248: BIO_puts(bio_err, "Error printing key\n");
! 249: ERR_print_errors(bio_err);
! 250: }
! 251: }
! 252: ret = 0;
! 253:
! 254: end:
! 255: if (pkey)
! 256: EVP_PKEY_free(pkey);
! 257: if (ctx)
! 258: EVP_PKEY_CTX_free(ctx);
! 259: if (out)
! 260: BIO_free_all(out);
! 261: BIO_free(in);
! 262: free(pass);
! 263:
! 264: return ret;
! 265: }
! 266:
! 267: static int
! 268: init_keygen_file(BIO * err, EVP_PKEY_CTX ** pctx,
! 269: const char *file, ENGINE * e)
! 270: {
! 271: BIO *pbio;
! 272: EVP_PKEY *pkey = NULL;
! 273: EVP_PKEY_CTX *ctx = NULL;
! 274: if (*pctx) {
! 275: BIO_puts(err, "Parameters already set!\n");
! 276: return 0;
! 277: }
! 278: pbio = BIO_new_file(file, "r");
! 279: if (!pbio) {
! 280: BIO_printf(err, "Can't open parameter file %s\n", file);
! 281: return 0;
! 282: }
! 283: pkey = PEM_read_bio_Parameters(pbio, NULL);
! 284: BIO_free(pbio);
! 285:
! 286: if (!pkey) {
! 287: BIO_printf(bio_err, "Error reading parameter file %s\n", file);
! 288: return 0;
! 289: }
! 290: ctx = EVP_PKEY_CTX_new(pkey, e);
! 291: if (!ctx)
! 292: goto err;
! 293: if (EVP_PKEY_keygen_init(ctx) <= 0)
! 294: goto err;
! 295: EVP_PKEY_free(pkey);
! 296: *pctx = ctx;
! 297: return 1;
! 298:
! 299: err:
! 300: BIO_puts(err, "Error initializing context\n");
! 301: ERR_print_errors(err);
! 302: if (ctx)
! 303: EVP_PKEY_CTX_free(ctx);
! 304: if (pkey)
! 305: EVP_PKEY_free(pkey);
! 306: return 0;
! 307:
! 308: }
! 309:
! 310: int
! 311: init_gen_str(BIO * err, EVP_PKEY_CTX ** pctx,
! 312: const char *algname, ENGINE * e, int do_param)
! 313: {
! 314: EVP_PKEY_CTX *ctx = NULL;
! 315: const EVP_PKEY_ASN1_METHOD *ameth;
! 316: ENGINE *tmpeng = NULL;
! 317: int pkey_id;
! 318:
! 319: if (*pctx) {
! 320: BIO_puts(err, "Algorithm already set!\n");
! 321: return 0;
! 322: }
! 323: ameth = EVP_PKEY_asn1_find_str(&tmpeng, algname, -1);
! 324:
! 325: #ifndef OPENSSL_NO_ENGINE
! 326: if (!ameth && e)
! 327: ameth = ENGINE_get_pkey_asn1_meth_str(e, algname, -1);
! 328: #endif
! 329:
! 330: if (!ameth) {
! 331: BIO_printf(bio_err, "Algorithm %s not found\n", algname);
! 332: return 0;
! 333: }
! 334: ERR_clear_error();
! 335:
! 336: EVP_PKEY_asn1_get0_info(&pkey_id, NULL, NULL, NULL, NULL, ameth);
! 337: #ifndef OPENSSL_NO_ENGINE
! 338: if (tmpeng)
! 339: ENGINE_finish(tmpeng);
! 340: #endif
! 341: ctx = EVP_PKEY_CTX_new_id(pkey_id, e);
! 342:
! 343: if (!ctx)
! 344: goto err;
! 345: if (do_param) {
! 346: if (EVP_PKEY_paramgen_init(ctx) <= 0)
! 347: goto err;
! 348: } else {
! 349: if (EVP_PKEY_keygen_init(ctx) <= 0)
! 350: goto err;
! 351: }
! 352:
! 353: *pctx = ctx;
! 354: return 1;
! 355:
! 356: err:
! 357: BIO_printf(err, "Error initializing %s context\n", algname);
! 358: ERR_print_errors(err);
! 359: if (ctx)
! 360: EVP_PKEY_CTX_free(ctx);
! 361: return 0;
! 362:
! 363: }
! 364:
! 365: static int
! 366: genpkey_cb(EVP_PKEY_CTX * ctx)
! 367: {
! 368: char c = '*';
! 369: BIO *b = EVP_PKEY_CTX_get_app_data(ctx);
! 370: int p;
! 371: p = EVP_PKEY_CTX_get_keygen_info(ctx, 0);
! 372: if (p == 0)
! 373: c = '.';
! 374: if (p == 1)
! 375: c = '+';
! 376: if (p == 2)
! 377: c = '*';
! 378: if (p == 3)
! 379: c = '\n';
! 380: BIO_write(b, &c, 1);
! 381: (void) BIO_flush(b);
! 382: return 1;
! 383: }
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