/* 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