-/* 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
*/
-#ifndef OPENSSL_NO_RSA
+#include <openssl/opensslconf.h>
+
#include <stdio.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include "apps.h"
+#include "progs.h"
#include <openssl/bio.h>
#include <openssl/err.h>
#include <openssl/bn.h>
#include <openssl/evp.h>
#include <openssl/x509.h>
#include <openssl/pem.h>
-#include <openssl/engine.h>
-
-#define DEFBITS 512
-#undef PROG
-#define PROG genrsa_main
-
-static void MS_CALLBACK genrsa_cb(int p, int n, void *arg);
+#include <openssl/rand.h>
-int MAIN(int, char **);
+#define DEFBITS 2048
+#define DEFPRIMES 2
-int MAIN(int argc, char **argv)
- {
- ENGINE *e = NULL;
- int ret=1;
- RSA *rsa=NULL;
- int i,num=DEFBITS;
- long l;
- const EVP_CIPHER *enc=NULL;
- unsigned long f4=RSA_F4;
- char *outfile=NULL;
- char *passargout = NULL, *passout = NULL;
- char *engine=NULL;
- char *inrand=NULL;
- BIO *out=NULL;
+static int verbose = 0;
- apps_startup();
+static int genrsa_cb(EVP_PKEY_CTX *ctx);
- 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 ((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;
- else if (strcmp(*argv,"-engine") == 0)
- {
- if (--argc < 1) goto bad;
- engine= *(++argv);
- }
- 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();
+typedef enum OPTION_choice {
+ OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
+#ifndef OPENSSL_NO_DEPRECATED_3_0
+ OPT_3,
#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");
+ 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
- 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");
- BIO_printf(bio_err," -engine e use engine e, possibly a hardware device.\n");
- 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;
- }
-
- ERR_load_crypto_strings();
- if(!app_passwd(bio_err, NULL, passargout, NULL, &passout)) {
- BIO_printf(bio_err, "Error getting password\n");
- goto err;
- }
-
- if (engine != NULL)
- {
- if((e = ENGINE_by_id(engine)) == NULL)
- {
- BIO_printf(bio_err,"invalid engine \"%s\"\n",
- engine);
- goto err;
- }
- if(!ENGINE_set_default(e, ENGINE_METHOD_ALL))
- {
- BIO_printf(bio_err,"can't use that engine\n");
- goto err;
- }
- BIO_printf(bio_err,"engine \"%s\" set.\n", engine);
- /* Free our "structural" reference. */
- ENGINE_free(e);
- }
-
- 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);
- }
+ OPT_SECTION("Input"),
+#ifndef OPENSSL_NO_DEPRECATED_3_0
+ {"3", OPT_3, '-', "(deprecated) Use 3 for the E value"},
#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");
- }
- 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);
- rsa=RSA_generate_key(num,f4,genrsa_cb,bio_err);
-
- app_RAND_write_file(NULL, bio_err);
-
- if (rsa == NULL) 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 SIXTY_FOUR_BIT
- l<<=BN_BITS4;
- l<<=BN_BITS4;
-#endif
- l+=rsa->e->d[i];
- }
- BIO_printf(bio_err,"e is %ld (0x%lX)\n",l,l);
- if (!PEM_write_bio_RSAPrivateKey(out,rsa,enc,NULL,0,NULL, passout))
- goto err;
-
- ret=0;
-err:
- if (rsa != NULL) RSA_free(rsa);
- if (out != NULL) BIO_free_all(out);
- if(passout) OPENSSL_free(passout);
- if (ret != 0)
- ERR_print_errors(bio_err);
- EXIT(ret);
- }
-
-static void MS_CALLBACK genrsa_cb(int p, int n, void *arg)
- {
- char c='*';
-
- if (p == 0) c='.';
- if (p == 1) c='+';
- if (p == 2) c='*';
- if (p == 3) c='\n';
- BIO_write((BIO *)arg,&c,1);
- (void)BIO_flush((BIO *)arg);
-#ifdef LINT
- p=n;
-#endif
- }
-#else /* !OPENSSL_NO_RSA */
-
-# if PEDANTIC
-static void *dummy=&dummy;
-# endif
-
+ {"F4", OPT_F4, '-', "Use the Fermat number F4 (0x10001) for the E value"},
+ {"f4", OPT_F4, '-', "Use the Fermat number F4 (0x10001) for the E value"},
+
+ 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"},
+
+ OPT_R_OPTIONS,
+ OPT_PROV_OPTIONS,
+
+ OPT_PARAMETERS(),
+ {"numbits", 0, 0, "Size of key in bits"},
+ {NULL}
+};
+
+int genrsa_main(int argc, char **argv)
+{
+ 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, *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;
+#ifndef OPENSSL_NO_DEPRECATED_3_0
+ case OPT_3:
+ f4 = RSA_3;
+ break;
#endif
+ case OPT_F4:
+ f4 = RSA_F4;
+ break;
+ 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;
+ }
+ }
+ 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;
+ }
+
+ private = 1;
+ if (!app_passwd(NULL, passoutarg, NULL, &passout)) {
+ BIO_printf(bio_err, "Error getting password\n");
+ goto end;
+ }
+
+ out = bio_open_owner(outfile, FORMAT_PEM, private);
+ if (out == NULL)
+ goto end;
+
+ if (!init_gen_str(&ctx, "RSA", eng, 0))
+ goto end;
+
+ EVP_PKEY_CTX_set_cb(ctx, genrsa_cb);
+ EVP_PKEY_CTX_set_app_data(ctx, bio_err);
+
+ 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 (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);
+ OPENSSL_free(dece);
+ }
+ if (!PEM_write_bio_PrivateKey(out, pkey, enc, NULL, 0, NULL, passout))
+ goto end;
+
+ ret = 0;
+ 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);
+ return ret;
+}
+
+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 = '.';
+ if (p == 1)
+ c = '+';
+ if (p == 2)
+ c = '*';
+ if (p == 3)
+ c = '\n';
+ BIO_write(b, &c, 1);
+ (void)BIO_flush(b);
+ return 1;
+}
projects / openssl.git / blobdiff