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+/* apps/dsaparam.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_DSA */
+/* 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
+
+#ifndef OPENSSL_NO_DSA
+#include <assert.h>
+#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/dsa.h>
+#include <openssl/x509.h>
+#include <openssl/pem.h>
+
+#undef PROG
+#define PROG dsaparam_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
+ * -noout
+ * -text
+ * -C
+ * -noout
+ * -genkey
+ * #ifdef GENCB_TEST
+ * -timebomb n - interrupt keygen after <n> seconds
+ * #endif
+ */
+
+#ifdef GENCB_TEST
+
+static int stop_keygen_flag = 0;
+
+static void timebomb_sigalarm(int foo)
+ {
+ stop_keygen_flag = 1;
+ }
+
+#endif
+
+static int MS_CALLBACK dsa_cb(int p, int n, BN_GENCB *cb);
+
+int MAIN(int, char **);
+
+int MAIN(int argc, char **argv)
+ {
+ DSA *dsa=NULL;
+ int i,badops=0,text=0;
+ BIO *in=NULL,*out=NULL;
+ int informat,outformat,noout=0,C=0,ret=1;
+ char *infile,*outfile,*prog,*inrand=NULL;
+ int numbits= -1,num,genkey=0;
+ int need_rand=0;
+#ifndef OPENSSL_NO_ENGINE
+ char *engine=NULL;
+#endif
+#ifdef GENCB_TEST
+ int timebomb=0;
+#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;
+
+ 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
+#ifdef GENCB_TEST
+ else if(strcmp(*argv, "-timebomb") == 0)
+ {
+ if (--argc < 1) goto bad;
+ timebomb = atoi(*(++argv));
+ }
+#endif
+ else if (strcmp(*argv,"-text") == 0)
+ text=1;
+ else if (strcmp(*argv,"-C") == 0)
+ C=1;
+ else if (strcmp(*argv,"-genkey") == 0)
+ {
+ genkey=1;
+ need_rand=1;
+ }
+ else if (strcmp(*argv,"-rand") == 0)
+ {
+ if (--argc < 1) goto bad;
+ inrand= *(++argv);
+ need_rand=1;
+ }
+ else if (strcmp(*argv,"-noout") == 0)
+ noout=1;
+ else if (sscanf(*argv,"%d",&num) == 1)
+ {
+ /* generate a key */
+ numbits=num;
+ need_rand=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] [bits] <infile >outfile\n",prog);
+ BIO_printf(bio_err,"where options are\n");
+ BIO_printf(bio_err," -inform arg input format - DER or PEM\n");
+ BIO_printf(bio_err," -outform arg output format - DER or PEM\n");
+ BIO_printf(bio_err," -in arg input file\n");
+ BIO_printf(bio_err," -out arg output file\n");
+ BIO_printf(bio_err," -text print as text\n");
+ BIO_printf(bio_err," -C Output C code\n");
+ BIO_printf(bio_err," -noout no output\n");
+ BIO_printf(bio_err," -genkey generate a DSA key\n");
+ BIO_printf(bio_err," -rand files to use for random number input\n");
+#ifndef OPENSSL_NO_ENGINE
+ BIO_printf(bio_err," -engine e use engine e, possibly a hardware device.\n");
+#endif
+#ifdef GENCB_TEST
+ BIO_printf(bio_err," -timebomb n interrupt keygen after <n> seconds\n");
+#endif
+ BIO_printf(bio_err," number number of bits to use for generating private key\n");
+ goto end;
+ }
+
+ ERR_load_crypto_strings();
+
+ 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;
+ }
+ }
+
+#ifndef OPENSSL_NO_ENGINE
+ setup_engine(bio_err, engine, 0);
+#endif
+
+ if (need_rand)
+ {
+ app_RAND_load_file(NULL, bio_err, (inrand != NULL));
+ if (inrand != NULL)
+ BIO_printf(bio_err,"%ld semi-random bytes loaded\n",
+ app_RAND_load_files(inrand));
+ }
+
+ if (numbits > 0)
+ {
+ BN_GENCB cb;
+ BN_GENCB_set(&cb, dsa_cb, bio_err);
+ assert(need_rand);
+ dsa = DSA_new();
+ if(!dsa)
+ {
+ BIO_printf(bio_err,"Error allocating DSA object\n");
+ goto end;
+ }
+ BIO_printf(bio_err,"Generating DSA parameters, %d bit long prime\n",num);
+ BIO_printf(bio_err,"This could take some time\n");
+#ifdef GENCB_TEST
+ if(timebomb > 0)
+ {
+ struct sigaction act;
+ act.sa_handler = timebomb_sigalarm;
+ act.sa_flags = 0;
+ BIO_printf(bio_err,"(though I'll stop it if not done within %d secs)\n",
+ timebomb);
+ if(sigaction(SIGALRM, &act, NULL) != 0)
+ {
+ BIO_printf(bio_err,"Error, couldn't set SIGALRM handler\n");
+ goto end;
+ }
+ alarm(timebomb);
+ }
+#endif
+ if(!DSA_generate_parameters_ex(dsa,num,NULL,0,NULL,NULL, &cb))
+ {
+#ifdef GENCB_TEST
+ if(stop_keygen_flag)
+ {
+ BIO_printf(bio_err,"DSA key generation time-stopped\n");
+ /* This is an asked-for behaviour! */
+ ret = 0;
+ goto end;
+ }
+#endif
+ BIO_printf(bio_err,"Error, DSA key generation failed\n");
+ goto end;
+ }
+ }
+ else if (informat == FORMAT_ASN1)
+ dsa=d2i_DSAparams_bio(in,NULL);
+ else if (informat == FORMAT_PEM)
+ dsa=PEM_read_bio_DSAparams(in,NULL,NULL,NULL);
+ else
+ {
+ BIO_printf(bio_err,"bad input format specified\n");
+ goto end;
+ }
+ if (dsa == NULL)
+ {
+ BIO_printf(bio_err,"unable to load DSA parameters\n");
+ ERR_print_errors(bio_err);
+ goto end;
+ }
+
+ if (text)
+ {
+ DSAparams_print(out,dsa);
+ }
+
+ if (C)
+ {
+ unsigned char *data;
+ int l,len,bits_p;
+
+ len=BN_num_bytes(dsa->p);
+ bits_p=BN_num_bits(dsa->p);
+ data=(unsigned char *)OPENSSL_malloc(len+20);
+ if (data == NULL)
+ {
+ perror("OPENSSL_malloc");
+ goto end;
+ }
+ l=BN_bn2bin(dsa->p,data);
+ printf("static unsigned char dsa%d_p[]={",bits_p);
+ 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(dsa->q,data);
+ printf("static unsigned char dsa%d_q[]={",bits_p);
+ 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(dsa->g,data);
+ printf("static unsigned char dsa%d_g[]={",bits_p);
+ for (i=0; i<l; i++)
+ {
+ if ((i%12) == 0) printf("\n\t");
+ printf("0x%02X,",data[i]);
+ }
+ printf("\n\t};\n\n");
+
+ printf("DSA *get_dsa%d()\n\t{\n",bits_p);
+ printf("\tDSA *dsa;\n\n");
+ printf("\tif ((dsa=DSA_new()) == NULL) return(NULL);\n");
+ printf("\tdsa->p=BN_bin2bn(dsa%d_p,sizeof(dsa%d_p),NULL);\n",
+ bits_p,bits_p);
+ printf("\tdsa->q=BN_bin2bn(dsa%d_q,sizeof(dsa%d_q),NULL);\n",
+ bits_p,bits_p);
+ printf("\tdsa->g=BN_bin2bn(dsa%d_g,sizeof(dsa%d_g),NULL);\n",
+ bits_p,bits_p);
+ printf("\tif ((dsa->p == NULL) || (dsa->q == NULL) || (dsa->g == NULL))\n");
+ printf("\t\t{ DSA_free(dsa); return(NULL); }\n");
+ printf("\treturn(dsa);\n\t}\n");
+ }
+
+
+ if (!noout)
+ {
+ if (outformat == FORMAT_ASN1)
+ i=i2d_DSAparams_bio(out,dsa);
+ else if (outformat == FORMAT_PEM)
+ i=PEM_write_bio_DSAparams(out,dsa);
+ else {
+ BIO_printf(bio_err,"bad output format specified for outfile\n");
+ goto end;
+ }
+ if (!i)
+ {
+ BIO_printf(bio_err,"unable to write DSA parameters\n");
+ ERR_print_errors(bio_err);
+ goto end;
+ }
+ }
+ if (genkey)
+ {
+ DSA *dsakey;
+
+ assert(need_rand);
+ if ((dsakey=DSAparams_dup(dsa)) == NULL) goto end;
+ if (!DSA_generate_key(dsakey)) goto end;
+ if (outformat == FORMAT_ASN1)
+ i=i2d_DSAPrivateKey_bio(out,dsakey);
+ else if (outformat == FORMAT_PEM)
+ i=PEM_write_bio_DSAPrivateKey(out,dsakey,NULL,NULL,0,NULL,NULL);
+ else {
+ BIO_printf(bio_err,"bad output format specified for outfile\n");
+ goto end;
+ }
+ DSA_free(dsakey);
+ }
+ if (need_rand)
+ app_RAND_write_file(NULL, bio_err);
+ ret=0;
+end:
+ if (in != NULL) BIO_free(in);
+ if (out != NULL) BIO_free_all(out);
+ if (dsa != NULL) DSA_free(dsa);
+ apps_shutdown();
+ OPENSSL_EXIT(ret);
+ }
+
+static int MS_CALLBACK dsa_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);
+#ifdef LINT
+ p=n;
+#endif
+#ifdef GENCB_TEST
+ if(stop_keygen_flag)
+ return 0;
+#endif
+ return 1;
+ }
+#else /* !OPENSSL_NO_DSA */
+
+# if PEDANTIC
+static void *dummy=&dummy;
+# endif
+
+#endif
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