X-Git-Url: https://git.openssl.org/gitweb/?p=openssl.git;a=blobdiff_plain;f=apps%2Fdhparam.c;h=17c0b5b42002d018c54c01dca6a0063e099ad33d;hp=a92863373c8201c976873b186ae5ff6b097ee975;hb=94b3664a528258df5ebcaae213d19bf6568cc47d;hpb=20d242b0dee75830b104109c6fd5955a4ce35840 diff --git a/apps/dhparam.c b/apps/dhparam.c index a92863373c..17c0b5b420 100644 --- a/apps/dhparam.c +++ b/apps/dhparam.c @@ -1,25 +1,24 @@ -/* apps/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: @@ -34,10 +33,10 @@ * 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 + * 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 @@ -49,7 +48,7 @@ * 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 @@ -63,7 +62,7 @@ * are met: * * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. + * 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 @@ -109,423 +108,346 @@ * */ -#ifndef NO_DH -#include -#include -#include -#include -#include "apps.h" -#include -#include -#include -#include -#include -#include -#include - -#ifndef NO_DSA -#include -#endif - -#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 - * -dsaparam - read or generate DSA parameters, convert to DH - * -check - check the parameters are ok - * -noout - * -text - * -C - */ - -static void MS_CALLBACK dh_cb(int p, int n, void *arg); - -int MAIN(int, char **); - -int MAIN(int argc, char **argv) - { - DH *dh=NULL; - int i,badops=0,text=0; -#ifndef NO_DSA - int dsaparam=0; -#endif - BIO *in=NULL,*out=NULL; - int informat,outformat,check=0,noout=0,C=0,ret=1; - char *infile,*outfile,*prog; - char *inrand=NULL, *inegd=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; -#ifndef NO_DSA - else if (strcmp(*argv,"-dsaparam") == 0) - dsaparam=1; -#endif - 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 (strcmp(*argv,"-egd") == 0) - { - if (--argc < 1) goto bad; - inegd= *(++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"); -#ifndef NO_DSA - BIO_printf(bio_err," -dsaparam read or generate DSA parameters, convert to DH\n"); -#endif - 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%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," -egd file load random seed from EGD socket\n"); - BIO_printf(bio_err," -noout no output\n"); - goto end; - } - - ERR_load_crypto_strings(); - - if (g && !num) - num = DEFBITS; - -#ifndef NO_DSA - if (dsaparam) - { - if (g) - { - BIO_printf(bio_err, "generator may not be chosen for DSA parameters\n"); - goto end; - } - } - else -#endif - { - /* DH parameters */ - if (num && !g) - g = 2; - } - - if(num) { - - if (!app_RAND_load_file(NULL, bio_err, 1) - && inrand == NULL && inegd == 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)); - if (inegd != NULL) - BIO_printf(bio_err,"%ld egd bytes loaded\n", - RAND_egd(inegd)); - -#ifndef NO_DSA - if (dsaparam) - { - DSA *dsa; - - BIO_printf(bio_err,"Generating DSA parameters, %d bit long prime\n",num); - dsa = DSA_generate_parameters(num, NULL, 0, NULL, NULL, dh_cb, bio_err); - if (dsa == NULL) - { - ERR_print_errors(bio_err); - goto end; - } - - dh = DSA_dup_DH(dsa); - DSA_free(dsa); - if (dh == NULL) - { - ERR_print_errors(bio_err); - goto end; - } - } - else -#endif - { - BIO_printf(bio_err,"Generating DH parameters, %d bit long safe prime, generator %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) - { - ERR_print_errors(bio_err); - 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 && informat != FORMAT_PEM) - { - BIO_printf(bio_err,"bad input format specified\n"); - goto end; - } - -#ifndef NO_DSA - if (dsaparam) - { - DSA *dsa; - - if (informat == FORMAT_ASN1) - dsa=d2i_DSAparams_bio(in,NULL); - else /* informat == FORMAT_PEM */ - dsa=PEM_read_bio_DSAparams(in,NULL,NULL,NULL); - - if (dsa == NULL) - { - BIO_printf(bio_err,"unable to load DSA parameters\n"); - ERR_print_errors(bio_err); - goto end; - } - - dh = DSA_dup_DH(dsa); - DSA_free(dsa); - if (dh == NULL) - { - ERR_print_errors(bio_err); - goto end; - } - } - else -#endif - { - if (informat == FORMAT_ASN1) - dh=d2i_DHparams_bio(in,NULL); - else /* informat == FORMAT_PEM */ - dh=PEM_read_bio_DHparams(in,NULL,NULL,NULL); - - if (dh == NULL) - { - BIO_printf(bio_err,"unable to load DH parameters\n"); - ERR_print_errors(bio_err); - goto end; - } - } - - /* dh != NULL */ - } - - 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_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; - } - printf("#ifndef HEADER_DH_H\n" - "#include \n" - "#endif\n"); - printf("DH *get_dh%d()\n\t{\n",bits); - - l=BN_bn2bin(dh->p,data); - printf("\tstatic unsigned char dh%d_p[]={",bits); - for (i=0; ig,data); - printf("\tstatic unsigned char dh%d_g[]={",bits); - for (i=0; ip=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\t{ DH_free(dh); return(NULL); }\n"); - if (dh->length) - printf("\tdh->length = %d;\n", dh->length); - 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(out); - if (dh != NULL) DH_free(dh); - EXIT(ret); - } - -/* dh_cb is identical to dsa_cb in apps/dsaparam.c */ -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 - } +#include /* for OPENSSL_NO_DH */ +#ifndef OPENSSL_NO_DH +# include +# include +# include +# include +# include "apps.h" +# include +# include +# include +# include +# include +# include + +# ifndef OPENSSL_NO_DSA +# include +# endif + +# define DEFBITS 2048 + +static int dh_cb(int p, int n, BN_GENCB *cb); + +typedef enum OPTION_choice { + OPT_ERR = -1, OPT_EOF = 0, OPT_HELP, + OPT_INFORM, OPT_OUTFORM, OPT_IN, OPT_OUT, + OPT_ENGINE, OPT_CHECK, OPT_TEXT, OPT_NOOUT, + OPT_RAND, OPT_DSAPARAM, OPT_C, OPT_2, OPT_5 +} OPTION_CHOICE; + +OPTIONS dhparam_options[] = { + {OPT_HELP_STR, 1, '-', "Usage: %s [flags] [numbits]\n"}, + {OPT_HELP_STR, 1, '-', "Valid options are:\n"}, + {"help", OPT_HELP, '-', "Display this summary"}, + {"in", OPT_IN, '<', "Input file"}, + {"inform", OPT_INFORM, 'F', "Input format, DER or PEM"}, + {"outform", OPT_OUTFORM, 'F', "Output format, DER or PEM"}, + {"out", OPT_OUT, '>', "Output file"}, + {"check", OPT_CHECK, '-', "Check the DH parameters"}, + {"text", OPT_TEXT, '-', "Print a text form of the DH parameters"}, + {"noout", OPT_NOOUT, '-'}, + {"rand", OPT_RAND, 's', + "Load the file(s) into the random number generator"}, + {"C", OPT_C, '-', "Print C code"}, + {"2", OPT_2, '-', "Generate parameters using 2 as the generator value"}, + {"5", OPT_5, '-', "Generate parameters using 5 as the generator value"}, +# ifndef OPENSSL_NO_DSA + {"dsaparam", OPT_DSAPARAM, '-', + "Read or generate DSA parameters, convert to DH"}, +# endif +# ifndef OPENSSL_NO_ENGINE + {"engine", OPT_ENGINE, 's', "Use engine e, possibly a hardware device"}, +# endif + {NULL} +}; + +int dhparam_main(int argc, char **argv) +{ + BIO *in = NULL, *out = NULL; + DH *dh = NULL; + char *infile = NULL, *outfile = NULL, *prog, *inrand = NULL; + int dsaparam = 0, i, text = 0, C = 0, ret = 1, num = 0, g = 0; + int informat = FORMAT_PEM, outformat = FORMAT_PEM, check = 0, noout = 0; + OPTION_CHOICE o; + + prog = opt_init(argc, argv, dhparam_options); + while ((o = opt_next()) != OPT_EOF) { + switch (o) { + case OPT_EOF: + case OPT_ERR: + opthelp: + BIO_printf(bio_err, "%s: Use -help for summary.\n", prog); + goto end; + case OPT_HELP: + opt_help(dhparam_options); + ret = 0; + goto end; + case OPT_INFORM: + if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &informat)) + goto opthelp; + break; + case OPT_OUTFORM: + if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &outformat)) + goto opthelp; + break; + case OPT_IN: + infile = opt_arg(); + break; + case OPT_OUT: + outfile = opt_arg(); + break; + case OPT_ENGINE: + (void)setup_engine(opt_arg(), 0); + break; + case OPT_CHECK: + check = 1; + break; + case OPT_TEXT: + text = 1; + break; + case OPT_DSAPARAM: + dsaparam = 1; + break; + case OPT_C: + C = 1; + break; + case OPT_2: + g = 2; + break; + case OPT_5: + g = 5; + break; + case OPT_NOOUT: + noout = 1; + break; + case OPT_RAND: + inrand = opt_arg(); + break; + } + } + argc = opt_num_rest(); + argv = opt_rest(); + + if (argv[0] && (!opt_int(argv[0], &num) || num <= 0)) + goto end; + + if (g && !num) + num = DEFBITS; + +# ifndef OPENSSL_NO_DSA + if (dsaparam && g) { + BIO_printf(bio_err, + "generator may not be chosen for DSA parameters\n"); + goto end; + } +# endif + /* DH parameters */ + if (num && !g) + g = 2; + + if (num) { + + BN_GENCB *cb; + cb = BN_GENCB_new(); + if (!cb) { + ERR_print_errors(bio_err); + goto end; + } + + BN_GENCB_set(cb, dh_cb, bio_err); + if (!app_RAND_load_file(NULL, 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)); + +# ifndef OPENSSL_NO_DSA + if (dsaparam) { + DSA *dsa = DSA_new(); + + BIO_printf(bio_err, + "Generating DSA parameters, %d bit long prime\n", num); + if (!dsa + || !DSA_generate_parameters_ex(dsa, num, NULL, 0, NULL, NULL, + cb)) { + DSA_free(dsa); + BN_GENCB_free(cb); + ERR_print_errors(bio_err); + goto end; + } + + dh = DSA_dup_DH(dsa); + DSA_free(dsa); + if (dh == NULL) { + BN_GENCB_free(cb); + ERR_print_errors(bio_err); + goto end; + } + } else +# endif + { + dh = DH_new(); + BIO_printf(bio_err, + "Generating DH parameters, %d bit long safe prime, generator %d\n", + num, g); + BIO_printf(bio_err, "This is going to take a long time\n"); + if (!dh || !DH_generate_parameters_ex(dh, num, g, cb)) { + BN_GENCB_free(cb); + ERR_print_errors(bio_err); + goto end; + } + } + + BN_GENCB_free(cb); + app_RAND_write_file(NULL); + } else { + + in = bio_open_default(infile, 'r', informat); + if (in == NULL) + goto end; + +# ifndef OPENSSL_NO_DSA + if (dsaparam) { + DSA *dsa; + + if (informat == FORMAT_ASN1) + dsa = d2i_DSAparams_bio(in, NULL); + else /* informat == FORMAT_PEM */ + dsa = PEM_read_bio_DSAparams(in, NULL, NULL, NULL); + + if (dsa == NULL) { + BIO_printf(bio_err, "unable to load DSA parameters\n"); + ERR_print_errors(bio_err); + goto end; + } + + dh = DSA_dup_DH(dsa); + DSA_free(dsa); + if (dh == NULL) { + ERR_print_errors(bio_err); + goto end; + } + } else +# endif + { + if (informat == FORMAT_ASN1) + dh = d2i_DHparams_bio(in, NULL); + else /* informat == FORMAT_PEM */ + dh = PEM_read_bio_DHparams(in, NULL, NULL, NULL); + + if (dh == NULL) { + BIO_printf(bio_err, "unable to load DH parameters\n"); + ERR_print_errors(bio_err); + goto end; + } + } + + /* dh != NULL */ + } + + out = bio_open_default(outfile, 'w', outformat); + if (out == NULL) + 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_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, bits; + + len = BN_num_bytes(dh->p); + bits = BN_num_bits(dh->p); + data = app_malloc(len, "print a BN"); + BIO_printf(out, "#ifndef HEADER_DH_H\n" + "# include \n" + "#endif\n" + "\n"); + BIO_printf(out, "DH *get_dh%d()\n{\n", bits); + print_bignum_var(out, dh->p, "dhp", bits, data); + print_bignum_var(out, dh->g, "dhg", bits, data); + BIO_printf(out, " DH *dh = DN_new();\n" + "\n" + " if (dh == NULL)\n" + " return NULL;\n"); + BIO_printf(out, " dh->p = BN_bin2bn(dhp_%d, sizeof (dhp_%d), NULL);\n", + bits, bits); + BIO_printf(out, " dh->g = BN_bin2bn(dhg_%d, sizeof (dhg_%d), NULL);\n", + bits, bits); + BIO_printf(out, " if (!dh->p || !dh->g) {\n" + " DH_free(dh);\n" + " return NULL;\n" + " }\n"); + if (dh->length) + BIO_printf(out, + " dh->length = %ld;\n", dh->length); + BIO_printf(out, " return dh;\n}\n"); + OPENSSL_free(data); + } + + if (!noout) { + if (outformat == FORMAT_ASN1) + i = i2d_DHparams_bio(out, dh); + else if (dh->q) + i = PEM_write_bio_DHxparams(out, dh); + else + i = PEM_write_bio_DHparams(out, dh); + if (!i) { + BIO_printf(bio_err, "unable to write DH parameters\n"); + ERR_print_errors(bio_err); + goto end; + } + } + ret = 0; + end: + BIO_free(in); + BIO_free_all(out); + DH_free(dh); + return (ret); +} + +static int dh_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(BN_GENCB_get_arg(cb), &c, 1); + (void)BIO_flush(BN_GENCB_get_arg(cb)); + return 1; +} + +#else /* !OPENSSL_NO_DH */ + +# if PEDANTIC +static void *dummy = &dummy; +# endif #endif