X-Git-Url: https://git.openssl.org/gitweb/?p=openssl.git;a=blobdiff_plain;f=apps%2Fgenrsa.c;h=44ce42880c3e5cbddf1825000d3fe30b52a76b14;hp=5770c8d1ec4c5f088d7ea886f9d9f165efdb5c80;hb=33388b44b67145af2181b1e9528c381c8ea0d1b6;hpb=0f113f3ee4d629ef9a4a30911b22b224772085e5 diff --git a/apps/genrsa.c b/apps/genrsa.c index 5770c8d1ec..44ce42880c 100644 --- a/apps/genrsa.c +++ b/apps/genrsa.c @@ -1,331 +1,238 @@ -/* apps/genrsa.c */ -/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) - * All rights reserved. +/* + * Copyright 1995-2020 The OpenSSL Project Authors. 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.] + * Licensed under the Apache License 2.0 (the "License"). You may not use + * this file except in compliance with the License. You can obtain a copy + * in the file LICENSE in the source distribution or at + * https://www.openssl.org/source/license.html */ #include -#ifndef OPENSSL_NO_RSA -# include -# include -# include -# include -# include "apps.h" -# include -# include -# include -# include -# include -# include -# include -# include +#include +#include +#include +#include +#include "apps.h" +#include "progs.h" +#include +#include +#include +#include +#include +#include +#include +#include + +#define DEFBITS 2048 +#define DEFPRIMES 2 + +static int verbose = 0; + +static int genrsa_cb(EVP_PKEY_CTX *ctx); + +typedef enum OPTION_choice { + OPT_ERR = -1, OPT_EOF = 0, OPT_HELP, + OPT_3, OPT_F4, OPT_ENGINE, + OPT_OUT, OPT_PASSOUT, OPT_CIPHER, OPT_PRIMES, OPT_VERBOSE, + OPT_R_ENUM, OPT_PROV_ENUM +} OPTION_CHOICE; + +const OPTIONS genrsa_options[] = { + {OPT_HELP_STR, 1, '-', "Usage: %s [options] numbits\n"}, + + OPT_SECTION("General"), + {"help", OPT_HELP, '-', "Display this summary"}, +#ifndef OPENSSL_NO_ENGINE + {"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"}, +#endif + + OPT_SECTION("Input"), + {"3", OPT_3, '-', "Use 3 for the E value"}, + {"F4", OPT_F4, '-', "Use F4 (0x10001) for the E value"}, + {"f4", OPT_F4, '-', "Use F4 (0x10001) for the E value"}, -# define DEFBITS 2048 -# undef PROG -# define PROG genrsa_main + OPT_SECTION("Output"), + {"out", OPT_OUT, '>', "Output the key to specified file"}, + {"passout", OPT_PASSOUT, 's', "Output file pass phrase source"}, + {"primes", OPT_PRIMES, 'p', "Specify number of primes"}, + {"verbose", OPT_VERBOSE, '-', "Verbose output"}, + {"", OPT_CIPHER, '-', "Encrypt the output with any supported cipher"}, -static int genrsa_cb(int p, int n, BN_GENCB *cb); + OPT_R_OPTIONS, + OPT_PROV_OPTIONS, -int MAIN(int, char **); + OPT_PARAMETERS(), + {"numbits", 0, 0, "Size of key in bits"}, + {NULL} +}; -int MAIN(int argc, char **argv) +int genrsa_main(int argc, char **argv) { - BN_GENCB *cb = NULL; -# ifndef OPENSSL_NO_ENGINE - ENGINE *e = NULL; -# endif - int ret = 1; - int non_fips_allow = 0; - int num = DEFBITS; + BN_GENCB *cb = BN_GENCB_new(); + ENGINE *eng = NULL; + BIGNUM *bn = BN_new(); + RSA *rsa; + BIO *out = NULL; + const BIGNUM *e; + EVP_PKEY *pkey = NULL; + EVP_PKEY_CTX *ctx = NULL; const EVP_CIPHER *enc = NULL; + int ret = 1, num = DEFBITS, private = 0, primes = DEFPRIMES; unsigned long f4 = RSA_F4; - char *outfile = NULL; - char *passargout = NULL, *passout = NULL; - char *hexe, *dece; -# ifndef OPENSSL_NO_ENGINE - char *engine = NULL; -# endif - char *inrand = NULL; - BIO *out = NULL; - BIGNUM *bn = BN_new(); - RSA *rsa = NULL; - if (!bn) - goto err; - - cb = BN_GENCB_new(); - if (!cb) - goto err; - - apps_startup(); - - BN_GENCB_set(cb, genrsa_cb, bio_err); - - if (bio_err == NULL) - if ((bio_err = BIO_new(BIO_s_file())) != NULL) - BIO_set_fp(bio_err, stderr, BIO_NOCLOSE | BIO_FP_TEXT); - - 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) + char *outfile = NULL, *passoutarg = NULL, *passout = NULL; + char *prog, *hexe, *dece; + OPTION_CHOICE o; + unsigned char *ebuf = NULL; + + if (bn == NULL || cb == NULL) + goto end; + + prog = opt_init(argc, argv, genrsa_options); + while ((o = opt_next()) != OPT_EOF) { + switch (o) { + case OPT_EOF: + case OPT_ERR: +opthelp: + BIO_printf(bio_err, "%s: Use -help for summary.\n", prog); + goto end; + case OPT_HELP: + ret = 0; + opt_help(genrsa_options); + goto end; + case OPT_3: + f4 = RSA_3; 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) + case OPT_F4: f4 = RSA_F4; -# ifndef OPENSSL_NO_ENGINE - else if (strcmp(*argv, "-engine") == 0) { - if (--argc < 1) - goto bad; - engine = *(++argv); - } -# endif - else if (strcmp(*argv, "-rand") == 0) { - if (--argc < 1) - goto bad; - inrand = *(++argv); - } -# 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_SEED - else if (strcmp(*argv, "-seed") == 0) - enc = EVP_seed_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 if (strcmp(*argv, "-non-fips-allow") == 0) - non_fips_allow = 1; - else break; - argv++; - argc--; + case OPT_OUT: + outfile = opt_arg(); + break; + case OPT_ENGINE: + eng = setup_engine(opt_arg(), 0); + break; + case OPT_R_CASES: + if (!opt_rand(o)) + goto end; + break; + case OPT_PROV_CASES: + if (!opt_provider(o)) + goto end; + break; + case OPT_PASSOUT: + passoutarg = opt_arg(); + break; + case OPT_CIPHER: + if (!opt_cipher(opt_unknown(), &enc)) + goto end; + break; + case OPT_PRIMES: + if (!opt_int(opt_arg(), &primes)) + goto end; + break; + case OPT_VERBOSE: + verbose = 1; + break; + } } - 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_SEED - BIO_printf(bio_err, " -seed\n"); - BIO_printf(bio_err, - " encrypt PEM output with cbc seed\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 - BIO_printf(bio_err, " -rand file%cfile%c...\n", LIST_SEPARATOR_CHAR, - LIST_SEPARATOR_CHAR); - BIO_printf(bio_err, - " load the file (or the files in the directory) into\n"); - BIO_printf(bio_err, " the random number generator\n"); - goto err; + argc = opt_num_rest(); + argv = opt_rest(); + + if (argc == 1) { + if (!opt_int(argv[0], &num) || num <= 0) + goto end; + if (num > OPENSSL_RSA_MAX_MODULUS_BITS) + BIO_printf(bio_err, + "Warning: It is not recommended to use more than %d bit for RSA keys.\n" + " Your key size is %d! Larger key size may behave not as expected.\n", + OPENSSL_RSA_MAX_MODULUS_BITS, num); + } else if (argc > 0) { + BIO_printf(bio_err, "Extra arguments given.\n"); + goto opthelp; } - ERR_load_crypto_strings(); - - if (!app_passwd(bio_err, NULL, passargout, NULL, &passout)) { + private = 1; + if (!app_passwd(NULL, passoutarg, 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); -# ifdef OPENSSL_SYS_VMS - { - BIO *tmpbio = BIO_new(BIO_f_linebuffer()); - out = BIO_push(tmpbio, out); - } -# endif - } else { - if (BIO_write_filename(out, outfile) <= 0) { - perror(outfile); - goto err; - } - } - - if (!app_RAND_load_file(NULL, bio_err, 1) && inrand == NULL - && !RAND_status()) { - BIO_printf(bio_err, - "warning, not much extra random data, consider using the -rand option\n"); + goto end; } - if (inrand != NULL) - BIO_printf(bio_err, "%ld semi-random bytes loaded\n", - app_RAND_load_files(inrand)); - 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; + out = bio_open_owner(outfile, FORMAT_PEM, private); + if (out == NULL) + goto end; - if (non_fips_allow) - rsa->flags |= RSA_FLAG_NON_FIPS_ALLOW; + if (!init_gen_str(&ctx, "RSA", eng, 0)) + goto end; - if (!BN_set_word(bn, f4) || !RSA_generate_key_ex(rsa, num, bn, cb)) - goto err; + EVP_PKEY_CTX_set_cb(ctx, genrsa_cb); + EVP_PKEY_CTX_set_app_data(ctx, bio_err); - app_RAND_write_file(NULL, bio_err); - - hexe = BN_bn2hex(rsa->e); - dece = BN_bn2dec(rsa->e); - if (hexe && dece) { - BIO_printf(bio_err, "e is %s (0x%s)\n", dece, hexe); + if (EVP_PKEY_CTX_set_rsa_keygen_bits(ctx, num) <= 0) { + BIO_printf(bio_err, "Error setting RSA length\n"); + goto end; + } + if (!BN_set_word(bn, f4)) { + BIO_printf(bio_err, "Error allocating RSA public exponent\n"); + goto end; + } + if (EVP_PKEY_CTX_set_rsa_keygen_pubexp(ctx, bn) <= 0) { + BIO_printf(bio_err, "Error setting RSA public exponent\n"); + goto end; } - if (hexe) + if (EVP_PKEY_CTX_set_rsa_keygen_primes(ctx, primes) <= 0) { + BIO_printf(bio_err, "Error setting number of primes\n"); + goto end; + } + if (verbose) + BIO_printf(bio_err, "Generating RSA private key, %d bit long modulus (%d primes)\n", + num, primes); + if (!EVP_PKEY_keygen(ctx, &pkey)) { + BIO_printf(bio_err, "Error generating RSA key\n"); + goto end; + } + + if (verbose) { + if ((rsa = EVP_PKEY_get0_RSA(pkey)) != NULL) { + RSA_get0_key(rsa, NULL, &e, NULL); + } else { + BIO_printf(bio_err, "Error cannot access RSA e\n"); + goto end; + } + hexe = BN_bn2hex(e); + dece = BN_bn2dec(e); + if (hexe && dece) { + BIO_printf(bio_err, "e is %s (0x%s)\n", dece, hexe); + } OPENSSL_free(hexe); - if (dece) OPENSSL_free(dece); - { - PW_CB_DATA cb_data; - cb_data.password = passout; - cb_data.prompt_info = outfile; - if (!PEM_write_bio_RSAPrivateKey(out, rsa, enc, NULL, 0, - (pem_password_cb *)password_callback, - &cb_data)) - goto err; } + if (!PEM_write_bio_PrivateKey(out, pkey, enc, NULL, 0, NULL, passout)) + goto end; ret = 0; - err: - if (bn) - BN_free(bn); - if (cb) - BN_GENCB_free(cb); - if (rsa) - RSA_free(rsa); - if (out) - BIO_free_all(out); - if (passout) - OPENSSL_free(passout); + end: + BN_free(bn); + BN_GENCB_free(cb); + EVP_PKEY_CTX_free(ctx); + EVP_PKEY_free(pkey); + BIO_free_all(out); + release_engine(eng); + OPENSSL_free(passout); + OPENSSL_free(ebuf); if (ret != 0) ERR_print_errors(bio_err); - apps_shutdown(); - OPENSSL_EXIT(ret); + return ret; } -static int genrsa_cb(int p, int n, BN_GENCB *cb) +static int genrsa_cb(EVP_PKEY_CTX *ctx) { char c = '*'; + BIO *b = EVP_PKEY_CTX_get_app_data(ctx); + int p = EVP_PKEY_CTX_get_keygen_info(ctx, 0); + + if (!verbose) + return 1; if (p == 0) c = '.'; @@ -335,14 +242,7 @@ static int genrsa_cb(int p, int n, BN_GENCB *cb) c = '*'; if (p == 3) c = '\n'; - BIO_write(BN_GENCB_get_arg(cb), &c, 1); - (void)BIO_flush(BN_GENCB_get_arg(cb)); + BIO_write(b, &c, 1); + (void)BIO_flush(b); return 1; } -#else /* !OPENSSL_NO_RSA */ - -# if PEDANTIC -static void *dummy = &dummy; -# endif - -#endif