You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
337 lines
11 KiB
337 lines
11 KiB
/* apps/dh.c */ |
|
/* obsoleted by dhparam.c */ |
|
/* 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 <openssl/opensslconf.h> /* for OPENSSL_NO_DH */ |
|
#ifndef OPENSSL_NO_DH |
|
# include <stdio.h> |
|
# include <stdlib.h> |
|
# include <time.h> |
|
# include <string.h> |
|
# include "apps.h" |
|
# include <openssl/bio.h> |
|
# include <openssl/err.h> |
|
# include <openssl/bn.h> |
|
# include <openssl/dh.h> |
|
# include <openssl/x509.h> |
|
# include <openssl/pem.h> |
|
|
|
# undef PROG |
|
# define PROG dh_main |
|
|
|
/*- |
|
* -inform arg - input format - default PEM (DER or PEM) |
|
* -outform arg - output format - default PEM |
|
* -in arg - input file - default stdin |
|
* -out arg - output file - default stdout |
|
* -check - check the parameters are ok |
|
* -noout |
|
* -text |
|
* -C |
|
*/ |
|
|
|
int MAIN(int, char **); |
|
|
|
int MAIN(int argc, char **argv) |
|
{ |
|
DH *dh = NULL; |
|
int i, badops = 0, text = 0; |
|
BIO *in = NULL, *out = NULL; |
|
int informat, outformat, check = 0, noout = 0, C = 0, ret = 1; |
|
char *infile, *outfile, *prog; |
|
# ifndef OPENSSL_NO_ENGINE |
|
char *engine; |
|
# endif |
|
|
|
apps_startup(); |
|
|
|
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 end; |
|
|
|
# ifndef OPENSSL_NO_ENGINE |
|
engine = NULL; |
|
# endif |
|
infile = NULL; |
|
outfile = NULL; |
|
informat = FORMAT_PEM; |
|
outformat = FORMAT_PEM; |
|
|
|
prog = argv[0]; |
|
argc--; |
|
argv++; |
|
while (argc >= 1) { |
|
if (strcmp(*argv, "-inform") == 0) { |
|
if (--argc < 1) |
|
goto bad; |
|
informat = str2fmt(*(++argv)); |
|
} else if (strcmp(*argv, "-outform") == 0) { |
|
if (--argc < 1) |
|
goto bad; |
|
outformat = str2fmt(*(++argv)); |
|
} else if (strcmp(*argv, "-in") == 0) { |
|
if (--argc < 1) |
|
goto bad; |
|
infile = *(++argv); |
|
} else if (strcmp(*argv, "-out") == 0) { |
|
if (--argc < 1) |
|
goto bad; |
|
outfile = *(++argv); |
|
} |
|
# ifndef OPENSSL_NO_ENGINE |
|
else if (strcmp(*argv, "-engine") == 0) { |
|
if (--argc < 1) |
|
goto bad; |
|
engine = *(++argv); |
|
} |
|
# endif |
|
else if (strcmp(*argv, "-check") == 0) |
|
check = 1; |
|
else if (strcmp(*argv, "-text") == 0) |
|
text = 1; |
|
else if (strcmp(*argv, "-C") == 0) |
|
C = 1; |
|
else if (strcmp(*argv, "-noout") == 0) |
|
noout = 1; |
|
else { |
|
BIO_printf(bio_err, "unknown option %s\n", *argv); |
|
badops = 1; |
|
break; |
|
} |
|
argc--; |
|
argv++; |
|
} |
|
|
|
if (badops) { |
|
bad: |
|
BIO_printf(bio_err, "%s [options] <infile >outfile\n", prog); |
|
BIO_printf(bio_err, "where options are\n"); |
|
BIO_printf(bio_err, " -inform arg input format - one of DER PEM\n"); |
|
BIO_printf(bio_err, |
|
" -outform arg output format - one of DER PEM\n"); |
|
BIO_printf(bio_err, " -in arg input file\n"); |
|
BIO_printf(bio_err, " -out arg output file\n"); |
|
BIO_printf(bio_err, " -check check the DH parameters\n"); |
|
BIO_printf(bio_err, |
|
" -text print a text form of the DH parameters\n"); |
|
BIO_printf(bio_err, " -C Output C code\n"); |
|
BIO_printf(bio_err, " -noout no output\n"); |
|
# ifndef OPENSSL_NO_ENGINE |
|
BIO_printf(bio_err, |
|
" -engine e use engine e, possibly a hardware device.\n"); |
|
# endif |
|
goto end; |
|
} |
|
|
|
ERR_load_crypto_strings(); |
|
|
|
# ifndef OPENSSL_NO_ENGINE |
|
setup_engine(bio_err, engine, 0); |
|
# endif |
|
|
|
in = BIO_new(BIO_s_file()); |
|
out = BIO_new(BIO_s_file()); |
|
if ((in == NULL) || (out == NULL)) { |
|
ERR_print_errors(bio_err); |
|
goto end; |
|
} |
|
|
|
if (infile == NULL) |
|
BIO_set_fp(in, stdin, BIO_NOCLOSE); |
|
else { |
|
if (BIO_read_filename(in, infile) <= 0) { |
|
perror(infile); |
|
goto end; |
|
} |
|
} |
|
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 end; |
|
} |
|
} |
|
|
|
if (informat == FORMAT_ASN1) |
|
dh = d2i_DHparams_bio(in, NULL); |
|
else if (informat == FORMAT_PEM) |
|
dh = PEM_read_bio_DHparams(in, NULL, NULL, NULL); |
|
else { |
|
BIO_printf(bio_err, "bad input format specified\n"); |
|
goto end; |
|
} |
|
if (dh == NULL) { |
|
BIO_printf(bio_err, "unable to load DH parameters\n"); |
|
ERR_print_errors(bio_err); |
|
goto end; |
|
} |
|
|
|
if (text) { |
|
DHparams_print(out, dh); |
|
# ifdef undef |
|
printf("p="); |
|
BN_print(stdout, dh->p); |
|
printf("\ng="); |
|
BN_print(stdout, dh->g); |
|
printf("\n"); |
|
if (dh->length != 0) |
|
printf("recommended private length=%ld\n", dh->length); |
|
# endif |
|
} |
|
|
|
if (check) { |
|
if (!DH_check(dh, &i)) { |
|
ERR_print_errors(bio_err); |
|
goto end; |
|
} |
|
if (i & DH_CHECK_P_NOT_PRIME) |
|
printf("p value is not prime\n"); |
|
if (i & DH_CHECK_P_NOT_SAFE_PRIME) |
|
printf("p value is not a safe prime\n"); |
|
if (i & DH_UNABLE_TO_CHECK_GENERATOR) |
|
printf("unable to check the generator value\n"); |
|
if (i & DH_NOT_SUITABLE_GENERATOR) |
|
printf("the g value is not a generator\n"); |
|
if (i == 0) |
|
printf("DH parameters appear to be ok.\n"); |
|
} |
|
if (C) { |
|
unsigned char *data; |
|
int len, l, bits; |
|
|
|
len = BN_num_bytes(dh->p); |
|
bits = BN_num_bits(dh->p); |
|
data = (unsigned char *)OPENSSL_malloc(len); |
|
if (data == NULL) { |
|
perror("OPENSSL_malloc"); |
|
goto end; |
|
} |
|
l = BN_bn2bin(dh->p, data); |
|
printf("static unsigned char dh%d_p[]={", bits); |
|
for (i = 0; i < l; i++) { |
|
if ((i % 12) == 0) |
|
printf("\n\t"); |
|
printf("0x%02X,", data[i]); |
|
} |
|
printf("\n\t};\n"); |
|
|
|
l = BN_bn2bin(dh->g, data); |
|
printf("static unsigned char dh%d_g[]={", bits); |
|
for (i = 0; i < l; i++) { |
|
if ((i % 12) == 0) |
|
printf("\n\t"); |
|
printf("0x%02X,", data[i]); |
|
} |
|
printf("\n\t};\n\n"); |
|
|
|
printf("DH *get_dh%d()\n\t{\n", bits); |
|
printf("\tDH *dh;\n\n"); |
|
printf("\tif ((dh=DH_new()) == NULL) return(NULL);\n"); |
|
printf("\tdh->p=BN_bin2bn(dh%d_p,sizeof(dh%d_p),NULL);\n", |
|
bits, bits); |
|
printf("\tdh->g=BN_bin2bn(dh%d_g,sizeof(dh%d_g),NULL);\n", |
|
bits, bits); |
|
printf("\tif ((dh->p == NULL) || (dh->g == NULL))\n"); |
|
printf("\t\treturn(NULL);\n"); |
|
printf("\treturn(dh);\n\t}\n"); |
|
OPENSSL_free(data); |
|
} |
|
|
|
if (!noout) { |
|
if (outformat == FORMAT_ASN1) |
|
i = i2d_DHparams_bio(out, dh); |
|
else if (outformat == FORMAT_PEM) |
|
i = PEM_write_bio_DHparams(out, dh); |
|
else { |
|
BIO_printf(bio_err, "bad output format specified for outfile\n"); |
|
goto end; |
|
} |
|
if (!i) { |
|
BIO_printf(bio_err, "unable to write DH parameters\n"); |
|
ERR_print_errors(bio_err); |
|
goto end; |
|
} |
|
} |
|
ret = 0; |
|
end: |
|
if (in != NULL) |
|
BIO_free(in); |
|
if (out != NULL) |
|
BIO_free_all(out); |
|
if (dh != NULL) |
|
DH_free(dh); |
|
apps_shutdown(); |
|
OPENSSL_EXIT(ret); |
|
} |
|
#else /* !OPENSSL_NO_DH */ |
|
|
|
# if PEDANTIC |
|
static void *dummy = &dummy; |
|
# endif |
|
|
|
#endif
|
|
|