-int MAIN(int, char **);
-
-int MAIN(int argc, char **argv)
- {
- DH *dh=NULL;
- int i,badops=0,text=0;
-#ifndef OPENSSL_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;
-#ifndef OPENSSL_NO_ENGINE
- char *engine=NULL;
-#endif
- 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);
-
- 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
- else if (strcmp(*argv,"-check") == 0)
- check=1;
- else if (strcmp(*argv,"-text") == 0)
- text=1;
-#ifndef OPENSSL_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 (((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 OPENSSL_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 2048)\n");
-#ifndef OPENSSL_NO_ENGINE
- BIO_printf(bio_err," -engine e use engine e, possibly a hardware device.\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," -noout no output\n");
- goto end;
- }
-
- ERR_load_crypto_strings();
-
-#ifndef OPENSSL_NO_ENGINE
- setup_engine(bio_err, engine, 0);
-#endif
+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 == NULL) {
+ 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 == NULL
+ || !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 == NULL || !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 <openssl/dh.h>\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);
+}