--- /dev/null
+/* apps/dh.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.]
+ */
+
+#ifndef 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 dhparam_main
+
+#define DEFBITS 512
+
+/* -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
+ */
+
+static void MS_CALLBACK dh_cb(int p, int n, void *arg);
+
+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;
+ char *inrand=NULL;
+ int num = 0, g = 0;
+
+ 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);
+
+ 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);
+ }
+ 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 if (strcmp(*argv,"-2") == 0)
+ g=2;
+ else if (strcmp(*argv,"-5") == 0)
+ g=5;
+ else if (strcmp(*argv,"-rand") == 0)
+ {
+ if (--argc < 1) goto bad;
+ inrand= *(++argv);
+ }
+ else if (((sscanf(*argv,"%d",&num) == 0) || (num <= 0)))
+ goto bad;
+ argv++;
+ argc--;
+ }
+
+ if (badops)
+ {
+bad:
+ BIO_printf(bio_err,"%s [options] [numbits]\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," -2 generate parameters using 2 as the generator value\n");
+ BIO_printf(bio_err," -5 generate parameters using 5 as the generator value\n");
+ BIO_printf(bio_err," numbits number of bits in to generate (default 512)\n");
+ BIO_printf(bio_err," -rand file:file:...\n");
+ BIO_printf(bio_err," - load the file (or the files in the directory) into\n");
+ BIO_printf(bio_err," the random number generator\n");
+ BIO_printf(bio_err," -noout no output\n");
+ goto end;
+ }
+
+ ERR_load_crypto_strings();
+
+ if(g && !num) num = DEFBITS;
+ else if(num && !g) g = 2;
+
+ if(num) {
+
+ if (!app_RAND_load_file(NULL, bio_err, 1) && inrand == NULL)
+ {
+ 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 DH parameters, %d bit long strong prime, generator of %d\n",num,g);
+ BIO_printf(bio_err,"This is going to take a long time\n");
+ dh=DH_generate_parameters(num,g,dh_cb,bio_err);
+
+ if (dh == NULL) goto end;
+
+ app_RAND_write_file(NULL, bio_err);
+ } else {
+
+ in=BIO_new(BIO_s_file());
+ if (in == 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 (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;
+ }
+
+ }
+
+ out=BIO_new(BIO_s_file());
+ if (out == NULL)
+ {
+ ERR_print_errors(bio_err);
+ goto end;
+ }
+ if (outfile == NULL)
+ BIO_set_fp(out,stdout,BIO_NOCLOSE);
+ else
+ {
+ if (BIO_write_filename(out,outfile) <= 0)
+ {
+ perror(outfile);
+ goto end;
+ }
+ }
+
+
+
+ if (text)
+ {
+ DHparams_print(out,dh);
+ }
+
+ 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_STRONG_PRIME)
+ printf("p value is not a strong 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 *)Malloc(len);
+ if (data == NULL)
+ {
+ perror("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");
+ 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 paramaters\n");
+ ERR_print_errors(bio_err);
+ goto end;
+ }
+ }
+ ret=0;
+end:
+ if (in != NULL) BIO_free(in);
+ if (out != NULL) BIO_free(out);
+ if (dh != NULL) DH_free(dh);
+ EXIT(ret);
+ }
+
+static void MS_CALLBACK dh_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
+ }
+
+#endif
projects / openssl.git / commitdiff