#ifndef NO_DSA
#include <stdio.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.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>
#define DEFBITS 512
#undef PROG
#define PROG gendsa_main
int MAIN(int, char **);
int MAIN(int argc, char **argv)
{
DSA *dsa=NULL;
int ret=1;
char *outfile=NULL;
char *inrand=NULL,*dsaparams=NULL;
char *passargout = NULL, *passout = NULL;
BIO *out=NULL,*in=NULL;
EVP_CIPHER *enc=NULL;
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);
argv++;
argc--;
for (;;)
{
if (argc <= 0) break;
if (strcmp(*argv,"-out") == 0)
{
if (--argc < 1) goto bad;
outfile= *(++argv);
}
else if (strcmp(*argv,"-passout") == 0)
{
if (--argc < 1) goto bad;
passargout= *(++argv);
}
else if (strcmp(*argv,"-rand") == 0)
{
if (--argc < 1) goto bad;
inrand= *(++argv);
}
else if (strcmp(*argv,"-") == 0)
goto bad;
#ifndef NO_DES
else if (strcmp(*argv,"-des") == 0)
enc=EVP_des_cbc();
else if (strcmp(*argv,"-des3") == 0)
enc=EVP_des_ede3_cbc();
#endif
else if (**argv != '-' && dsaparams == NULL)
{
dsaparams = *argv;
}
else
goto bad;
argv++;
argc--;
}
if (dsaparams == NULL)
{
bad:
BIO_printf(bio_err,"usage: gendsa [args] dsaparam-file\n");
BIO_printf(bio_err," -out file - output the key to 'file'\n");
#ifndef NO_DES
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");
#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");
BIO_printf(bio_err," dsaparam-file\n");
BIO_printf(bio_err," - a DSA parameter file as generated by the dsaparam command\n");
goto end;
}
if(!app_passwd(bio_err, NULL, passargout, NULL, &passout)) {
BIO_printf(bio_err, "Error getting password\n");
goto end;
}
in=BIO_new(BIO_s_file());
if (!(BIO_read_filename(in,dsaparams)))
{
perror(dsaparams);
goto end;
}
if ((dsa=PEM_read_bio_DSAparams(in,NULL,NULL,NULL)) == NULL)
{
BIO_printf(bio_err,"unable to load DSA parameter file\n");
goto end;
}
BIO_free(in);
in = NULL;
out=BIO_new(BIO_s_file());
if (out == NULL) goto end;
if (outfile == NULL)
{
BIO_set_fp(out,stdout,BIO_NOCLOSE);
#ifdef 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 (!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 DSA key, %d bits\n",
BN_num_bits(dsa->p));
if (!DSA_generate_key(dsa)) goto end;
app_RAND_write_file(NULL, bio_err);
if (!PEM_write_bio_DSAPrivateKey(out,dsa,enc,NULL,0,NULL, passout))
goto end;
ret=0;
end:
if (ret != 0)
ERR_print_errors(bio_err);
if (in != NULL) BIO_free(in);
if (out != NULL) BIO_free_all(out);
if (dsa != NULL) DSA_free(dsa);
if(passout) OPENSSL_free(passout);
OPENSSL_EXIT(ret);
}
#endif