/* $OpenBSD: genrsa.c,v 1.34 2014/07/09 09:06:58 bcook Exp $ */ /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) * All rights reserved. * * This package is an SSL implementation written * by Eric Young (eay@cryptsoft.com). * The implementation was written so as to conform with Netscapes SSL. * * This library is free for commercial and non-commercial use as long as * the following conditions are aheared to. The following conditions * apply to all code found in this distribution, be it the RC4, RSA, * lhash, DES, etc., code; not just the SSL code. The SSL documentation * included with this distribution is covered by the same copyright terms * except that the holder is Tim Hudson (tjh@cryptsoft.com). * * Copyright remains Eric Young's, and as such any Copyright notices in * the code are not to be removed. * If this package is used in a product, Eric Young should be given attribution * as the author of the parts of the library used. * This can be in the form of a textual message at program startup or * in documentation (online or textual) provided with the package. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * "This product includes cryptographic software written by * Eric Young (eay@cryptsoft.com)" * The word 'cryptographic' can be left out if the rouines from the library * being used are not cryptographic related :-). * 4. If you include any Windows specific code (or a derivative thereof) from * the apps directory (application code) you must include an acknowledgement: * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" * * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * The licence and distribution terms for any publically available version or * derivative of this code cannot be changed. i.e. this code cannot simply be * copied and put under another distribution licence * [including the GNU Public Licence.] */ #include /* Until the key-gen callbacks are modified to use newer prototypes, we allow * deprecated functions for openssl-internal code */ #ifdef OPENSSL_NO_DEPRECATED #undef OPENSSL_NO_DEPRECATED #endif #include #include #include #include #include "apps.h" #include #include #include #include #include #include #include #include #define DEFBITS 2048 static int genrsa_cb(int p, int n, BN_GENCB * cb); int genrsa_main(int, char **); int genrsa_main(int argc, char **argv) { BN_GENCB cb; #ifndef OPENSSL_NO_ENGINE ENGINE *e = NULL; #endif int ret = 1; int i, num = DEFBITS; long l; const EVP_CIPHER *enc = NULL; unsigned long f4 = RSA_F4; char *outfile = NULL; char *passargout = NULL, *passout = NULL; #ifndef OPENSSL_NO_ENGINE char *engine = NULL; #endif BIO *out = NULL; BIGNUM *bn = BN_new(); RSA *rsa = NULL; if (!bn) goto err; BN_GENCB_set(&cb, genrsa_cb, bio_err); if (!load_config(bio_err, NULL)) goto err; if ((out = BIO_new(BIO_s_file())) == NULL) { BIO_printf(bio_err, "unable to create BIO for output\n"); goto err; } argv++; argc--; for (;;) { if (argc <= 0) break; if (strcmp(*argv, "-out") == 0) { if (--argc < 1) goto bad; outfile = *(++argv); } else if (strcmp(*argv, "-3") == 0) f4 = 3; else if (strcmp(*argv, "-F4") == 0 || strcmp(*argv, "-f4") == 0) f4 = RSA_F4; #ifndef OPENSSL_NO_ENGINE else if (strcmp(*argv, "-engine") == 0) { if (--argc < 1) goto bad; engine = *(++argv); } #endif #ifndef OPENSSL_NO_DES else if (strcmp(*argv, "-des") == 0) enc = EVP_des_cbc(); else if (strcmp(*argv, "-des3") == 0) enc = EVP_des_ede3_cbc(); #endif #ifndef OPENSSL_NO_IDEA else if (strcmp(*argv, "-idea") == 0) enc = EVP_idea_cbc(); #endif #ifndef OPENSSL_NO_AES else if (strcmp(*argv, "-aes128") == 0) enc = EVP_aes_128_cbc(); else if (strcmp(*argv, "-aes192") == 0) enc = EVP_aes_192_cbc(); else if (strcmp(*argv, "-aes256") == 0) enc = EVP_aes_256_cbc(); #endif #ifndef OPENSSL_NO_CAMELLIA else if (strcmp(*argv, "-camellia128") == 0) enc = EVP_camellia_128_cbc(); else if (strcmp(*argv, "-camellia192") == 0) enc = EVP_camellia_192_cbc(); else if (strcmp(*argv, "-camellia256") == 0) enc = EVP_camellia_256_cbc(); #endif else if (strcmp(*argv, "-passout") == 0) { if (--argc < 1) goto bad; passargout = *(++argv); } else break; argv++; argc--; } if ((argc >= 1) && ((sscanf(*argv, "%d", &num) == 0) || (num < 0))) { bad: BIO_printf(bio_err, "usage: genrsa [args] [numbits]\n"); BIO_printf(bio_err, " -des encrypt the generated key with DES in cbc mode\n"); BIO_printf(bio_err, " -des3 encrypt the generated key with DES in ede cbc mode (168 bit key)\n"); #ifndef OPENSSL_NO_IDEA BIO_printf(bio_err, " -idea encrypt the generated key with IDEA in cbc mode\n"); #endif #ifndef OPENSSL_NO_AES BIO_printf(bio_err, " -aes128, -aes192, -aes256\n"); BIO_printf(bio_err, " encrypt PEM output with cbc aes\n"); #endif #ifndef OPENSSL_NO_CAMELLIA BIO_printf(bio_err, " -camellia128, -camellia192, -camellia256\n"); BIO_printf(bio_err, " encrypt PEM output with cbc camellia\n"); #endif BIO_printf(bio_err, " -out file output the key to 'file\n"); BIO_printf(bio_err, " -passout arg output file pass phrase source\n"); BIO_printf(bio_err, " -f4 use F4 (0x10001) for the E value\n"); BIO_printf(bio_err, " -3 use 3 for the E value\n"); #ifndef OPENSSL_NO_ENGINE BIO_printf(bio_err, " -engine e use engine e, possibly a hardware device.\n"); #endif goto err; } ERR_load_crypto_strings(); if (!app_passwd(bio_err, NULL, passargout, NULL, &passout)) { BIO_printf(bio_err, "Error getting password\n"); goto err; } #ifndef OPENSSL_NO_ENGINE e = setup_engine(bio_err, engine, 0); #endif if (outfile == NULL) { BIO_set_fp(out, stdout, BIO_NOCLOSE); } else { if (BIO_write_filename(out, outfile) <= 0) { perror(outfile); goto err; } } BIO_printf(bio_err, "Generating RSA private key, %d bit long modulus\n", num); #ifdef OPENSSL_NO_ENGINE rsa = RSA_new(); #else rsa = RSA_new_method(e); #endif if (!rsa) goto err; if (!BN_set_word(bn, f4) || !RSA_generate_key_ex(rsa, num, bn, &cb)) goto err; /* * We need to do the following for when the base number size is < * long, esp windows 3.1 :-(. */ l = 0L; for (i = 0; i < rsa->e->top; i++) { #ifndef _LP64 l <<= BN_BITS4; l <<= BN_BITS4; #endif l += rsa->e->d[i]; } BIO_printf(bio_err, "e is %ld (0x%lX)\n", l, l); { PW_CB_DATA cb_data; cb_data.password = passout; cb_data.prompt_info = outfile; if (!PEM_write_bio_RSAPrivateKey(out, rsa, enc, NULL, 0, password_callback, &cb_data)) goto err; } ret = 0; err: if (bn) BN_free(bn); if (rsa) RSA_free(rsa); if (out) BIO_free_all(out); free(passout); if (ret != 0) ERR_print_errors(bio_err); return (ret); } static int genrsa_cb(int p, int n, BN_GENCB * cb) { char c = '*'; if (p == 0) c = '.'; if (p == 1) c = '+'; if (p == 2) c = '*'; if (p == 3) c = '\n'; BIO_write(cb->arg, &c, 1); (void) BIO_flush(cb->arg); return 1; }