static int pkey_dh_paramgen(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey)
{
DH *dh = NULL;
DH_PKEY_CTX *dctx = ctx->data;
BN_GENCB *pcb, cb;
int ret;
if (dctx->rfc5114_param) {
switch (dctx->rfc5114_param) {
case 1:
dh = DH_get_1024_160();
break;
case 2:
dh = DH_get_2048_224();
break;
case 3:
dh = DH_get_2048_256();
break;
default:
return -2;
}
EVP_PKEY_assign(pkey, EVP_PKEY_DHX, dh);
return 1;
}
if (ctx->pkey_gencb) {
pcb = &cb;
evp_pkey_set_cb_translate(pcb, ctx);
} else
pcb = NULL;
#ifndef OPENSSL_NO_DSA
if (dctx->use_dsa) {
DSA *dsa_dh;
dsa_dh = dsa_dh_generate(dctx, pcb);
if (!dsa_dh)
return 0;
dh = DSA_dup_DH(dsa_dh);
DSA_free(dsa_dh);
if (!dh)
return 0;
EVP_PKEY_assign(pkey, EVP_PKEY_DHX, dh);
return 1;
}
#endif
dh = DH_new();
if (!dh)
return 0;
ret = DH_generate_parameters_ex(dh,
dctx->prime_len, dctx->generator, pcb);
if (ret)
EVP_PKEY_assign_DH(pkey, dh);
else
DH_free(dh);
return ret;
}
int dhparam_main(int argc, char **argv)
{
BIO *in = NULL, *out = NULL;
DH *dh = NULL;
char *infile = NULL, *outfile = NULL, *prog, *inrand = NULL;
#ifndef OPENSSL_NO_DSA
int dsaparam = 0;
#endif
int 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:
#ifndef OPENSSL_NO_DSA
dsaparam = 1;
#endif
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);
}
int
dhparam_main(int argc, char **argv)
{
BIO *in = NULL, *out = NULL;
char *num_bits = NULL;
DH *dh = NULL;
int num = 0;
int ret = 1;
int i;
memset(&dhparam_config, 0, sizeof(dhparam_config));
dhparam_config.informat = FORMAT_PEM;
dhparam_config.outformat = FORMAT_PEM;
if (options_parse(argc, argv, dhparam_options, &num_bits, NULL) != 0) {
dhparam_usage();
return (1);
}
if (num_bits != NULL) {
if(sscanf(num_bits, "%d", &num) == 0 || num <= 0) {
BIO_printf(bio_err, "invalid number of bits: %s\n",
num_bits);
return (1);
}
}
if (dhparam_config.g && !num)
num = DEFBITS;
if (dhparam_config.dsaparam) {
if (dhparam_config.g) {
BIO_printf(bio_err, "generator may not be chosen for DSA parameters\n");
goto end;
}
} else {
/* DH parameters */
if (num && !dhparam_config.g)
dhparam_config.g = 2;
}
if (num) {
BN_GENCB cb;
BN_GENCB_set(&cb, dh_cb, bio_err);
if (dhparam_config.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)) {
if (dsa)
DSA_free(dsa);
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 {
dh = DH_new();
BIO_printf(bio_err, "Generating DH parameters, %d bit long safe prime, generator %d\n", num, dhparam_config.g);
BIO_printf(bio_err, "This is going to take a long time\n");
if (!dh || !DH_generate_parameters_ex(dh, num, dhparam_config.g, &cb)) {
ERR_print_errors(bio_err);
goto end;
}
}
} else {
in = BIO_new(BIO_s_file());
if (in == NULL) {
ERR_print_errors(bio_err);
goto end;
}
if (dhparam_config.infile == NULL)
BIO_set_fp(in, stdin, BIO_NOCLOSE);
else {
if (BIO_read_filename(in, dhparam_config.infile) <= 0) {
perror(dhparam_config.infile);
goto end;
}
}
if (dhparam_config.informat != FORMAT_ASN1 &&
dhparam_config.informat != FORMAT_PEM) {
BIO_printf(bio_err, "bad input format specified\n");
goto end;
}
if (dhparam_config.dsaparam) {
DSA *dsa;
if (dhparam_config.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
{
if (dhparam_config.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 (dhparam_config.outfile == NULL) {
BIO_set_fp(out, stdout, BIO_NOCLOSE);
} else {
if (BIO_write_filename(out, dhparam_config.outfile) <= 0) {
perror(dhparam_config.outfile);
goto end;
}
}
if (dhparam_config.text) {
DHparams_print(out, dh);
}
if (dhparam_config.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 (dhparam_config.C) {
unsigned char *data;
int len, l, bits;
len = BN_num_bytes(dh->p);
bits = BN_num_bits(dh->p);
data = malloc(len);
if (data == NULL) {
perror("malloc");
goto end;
}
printf("#ifndef HEADER_DH_H\n"
"#include <openssl/dh.h>\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; i < l; i++) {
if ((i % 12) == 0)
printf("\n\t\t");
printf("0x%02X, ", data[i]);
}
printf("\n\t\t};\n");
l = BN_bn2bin(dh->g, data);
printf("\tstatic unsigned char dh%d_g[] = {", bits);
for (i = 0; i < l; i++) {
if ((i % 12) == 0)
printf("\n\t\t");
printf("0x%02X, ", data[i]);
}
printf("\n\t\t};\n");
printf("\tDH *dh;\n\n");
printf("\tif ((dh = DH_new()) == NULL) return(NULL);\n");
printf("\tdh->p = 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 = %ld;\n", dh->length);
printf("\treturn(dh);\n\t}\n");
free(data);
}
if (!dhparam_config.noout) {
if (dhparam_config.outformat == FORMAT_ASN1)
i = i2d_DHparams_bio(out, dh);
else if (dhparam_config.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:
BIO_free(in);
if (out != NULL)
BIO_free_all(out);
if (dh != NULL)
DH_free(dh);
return (ret);
}
int MAIN(int argc, char **argv)
{
BIO *in = NULL, *out = NULL;
char *infile, *outfile, *prog;
char *inrand = NULL;
char *id = 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);
if (!load_config(bio_err, NULL))
goto end;
outfile = NULL;
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;
else if (strcmp(*argv, "-dsaparam") == 0)
dsaparam = 1;
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");
BIO_printf(bio_err,
" -dsaparam read or generate DSA parameters, convert to DH\n");
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");
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();
if (g && !num)
num = DEFBITS;
if (dsaparam) {
if (g) {
BIO_printf(bio_err,
"generator may not be chosen for DSA parameters\n");
goto end;
}
} else
{
/* DH parameters */
if (num && !g)
g = 2;
}
if (num) {
BN_GENCB cb;
BN_GENCB_set(&cb, dh_cb, bio_err);
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));
# 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)) {
if (dsa)
DSA_free(dsa);
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
{
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)) {
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 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_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 <openssl/dh.h>\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; i < l; i++) {
if ((i % 12) == 0)
printf("\n\t\t");
printf("0x%02X,", data[i]);
}
printf("\n\t\t};\n");
l = BN_bn2bin(dh->g, data);
printf("\tstatic unsigned char dh%d_g[]={", bits);
for (i = 0; i < l; i++) {
if ((i % 12) == 0)
printf("\n\t\t");
printf("0x%02X,", data[i]);
}
printf("\n\t\t};\n");
printf("\tDH *dh;\n\n");
printf("\tif ((dh=DH_new()) == NULL) return(NULL);\n");
printf("\tdh->p=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 = %ld;\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) {
if (dh->q)
i = PEM_write_bio_DHxparams(out, dh);
else
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_all(out);
if (dh != NULL)
DH_free(dh);
apps_shutdown();
OPENSSL_EXIT(ret);
}
int dhparam_main(int argc, char **argv)
{
BIO *in = NULL, *out = NULL;
DH *dh = NULL;
char *infile = NULL, *outfile = NULL, *prog;
ENGINE *e = NULL;
#ifndef OPENSSL_NO_DSA
int dsaparam = 0;
#endif
int 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:
e = setup_engine(opt_arg(), 0);
break;
case OPT_CHECK:
check = 1;
break;
case OPT_TEXT:
text = 1;
break;
case OPT_DSAPARAM:
#ifndef OPENSSL_NO_DSA
dsaparam = 1;
#endif
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_R_CASES:
if (!opt_rand(o))
goto end;
break;
}
}
argc = opt_num_rest();
argv = opt_rest();
if (argv[0] != NULL && (!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
out = bio_open_default(outfile, 'w', outformat);
if (out == NULL)
goto end;
/* 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);
# 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);
} 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) {
/*
* We have no PEM header to determine what type of DH params it
* is. We'll just try both.
*/
dh = d2i_DHparams_bio(in, NULL);
/* BIO_reset() returns 0 for success for file BIOs only!!! */
if (dh == NULL && BIO_reset(in) == 0)
dh = d2i_DHxparams_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 */
}
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)
BIO_printf(bio_err, "WARNING: p value is not prime\n");
if (i & DH_CHECK_P_NOT_SAFE_PRIME)
BIO_printf(bio_err, "WARNING: p value is not a safe prime\n");
if (i & DH_CHECK_Q_NOT_PRIME)
BIO_printf(bio_err, "WARNING: q value is not a prime\n");
if (i & DH_CHECK_INVALID_Q_VALUE)
BIO_printf(bio_err, "WARNING: q value is invalid\n");
if (i & DH_CHECK_INVALID_J_VALUE)
BIO_printf(bio_err, "WARNING: j value is invalid\n");
if (i & DH_UNABLE_TO_CHECK_GENERATOR)
BIO_printf(bio_err,
"WARNING: unable to check the generator value\n");
if (i & DH_NOT_SUITABLE_GENERATOR)
BIO_printf(bio_err, "WARNING: the g value is not a generator\n");
if (i == 0)
BIO_printf(bio_err, "DH parameters appear to be ok.\n");
if (num != 0 && i != 0) {
/*
* We have generated parameters but DH_check() indicates they are
* invalid! This should never happen!
*/
BIO_printf(bio_err, "ERROR: Invalid parameters generated\n");
goto end;
}
}
if (C) {
unsigned char *data;
int len, bits;
const BIGNUM *pbn, *gbn;
len = DH_size(dh);
bits = DH_bits(dh);
DH_get0_pqg(dh, &pbn, NULL, &gbn);
data = app_malloc(len, "print a BN");
BIO_printf(out, "static DH *get_dh%d(void)\n{\n", bits);
print_bignum_var(out, pbn, "dhp", bits, data);
print_bignum_var(out, gbn, "dhg", bits, data);
BIO_printf(out, " DH *dh = DH_new();\n"
" BIGNUM *p, *g;\n"
"\n"
" if (dh == NULL)\n"
" return NULL;\n");
BIO_printf(out, " p = BN_bin2bn(dhp_%d, sizeof(dhp_%d), NULL);\n",
bits, bits);
BIO_printf(out, " g = BN_bin2bn(dhg_%d, sizeof(dhg_%d), NULL);\n",
bits, bits);
BIO_printf(out, " if (p == NULL || g == NULL\n"
" || !DH_set0_pqg(dh, p, NULL, g)) {\n"
" DH_free(dh);\n"
" BN_free(p);\n"
" BN_free(g);\n"
" return NULL;\n"
" }\n");
if (DH_get_length(dh) > 0)
BIO_printf(out,
" if (!DH_set_length(dh, %ld)) {\n"
" DH_free(dh);\n"
" return NULL;\n"
" }\n", DH_get_length(dh));
BIO_printf(out, " return dh;\n}\n");
OPENSSL_free(data);
}
if (!noout) {
const BIGNUM *q;
DH_get0_pqg(dh, NULL, &q, NULL);
if (outformat == FORMAT_ASN1) {
if (q != NULL)
i = i2d_DHxparams_bio(out, dh);
else
i = i2d_DHparams_bio(out, dh);
} else if (q != NULL) {
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);
release_engine(e);
return ret;
}
inline dh_key dsa_key::to_dh_key() const
{
return dh_key::take_ownership(DSA_dup_DH(ptr().get()));
}
int tls_connection_dh(void *ssl_ctx, struct tls_connection *conn,
const char *dh_file)
{
#ifdef OPENSSL_NO_DH
if (dh_file == NULL)
return 0;
wpa_printf(MSG_ERROR, "TLS: openssl does not include DH support, but "
"dh_file specified");
return -1;
#else /* OPENSSL_NO_DH */
DH *dh;
BIO *bio;
if (dh_file == NULL)
return 0;
if (conn == NULL)
return -1;
bio = BIO_new_file(dh_file, "r");
if (bio == NULL) {
wpa_printf(MSG_INFO, "TLS: Failed to open DH file '%s': %s",
dh_file, ERR_error_string(ERR_get_error(), NULL));
return -1;
}
dh = PEM_read_bio_DHparams(bio, NULL, NULL, NULL);
BIO_free(bio);
#ifndef OPENSSL_NO_DSA
while (dh == NULL) {
DSA *dsa;
wpa_printf(MSG_DEBUG, "TLS: Failed to parse DH file '%s': %s -"
" trying to parse as DSA params", dh_file,
ERR_error_string(ERR_get_error(), NULL));
bio = BIO_new_file(dh_file, "r");
if (bio == NULL)
break;
dsa = PEM_read_bio_DSAparams(bio, NULL, NULL, NULL);
BIO_free(bio);
if (!dsa) {
wpa_printf(MSG_DEBUG, "TLS: Failed to parse DSA file "
"'%s': %s", dh_file,
ERR_error_string(ERR_get_error(), NULL));
break;
}
wpa_printf(MSG_DEBUG, "TLS: DH file in DSA param format");
dh = DSA_dup_DH(dsa);
DSA_free(dsa);
if (dh == NULL) {
wpa_printf(MSG_INFO, "TLS: Failed to convert DSA "
"params into DH params");
break;
}
break;
}
#endif /* !OPENSSL_NO_DSA */
if (dh == NULL) {
wpa_printf(MSG_INFO, "TLS: Failed to read/parse DH/DSA file "
"'%s'", dh_file);
return -1;
}
if (SSL_set_tmp_dh(conn->ssl, dh) != 1) {
wpa_printf(MSG_INFO, "TLS: Failed to set DH params from '%s': "
"%s", dh_file,
ERR_error_string(ERR_get_error(), NULL));
DH_free(dh);
return -1;
}
DH_free(dh);
return 0;
#endif /* OPENSSL_NO_DH */
}
int
dhparam_main(int argc, char **argv)
{
DH *dh = NULL;
int i, badops = 0, text = 0;
int dsaparam = 0;
BIO *in = NULL, *out = NULL;
int informat, outformat, check = 0, noout = 0, C = 0, ret = 1;
char *infile, *outfile, *prog;
#ifndef OPENSSL_NO_ENGINE
char *engine = NULL;
#endif
int num = 0, g = 0;
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;
else if (strcmp(*argv, "-dsaparam") == 0)
dsaparam = 1;
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 (((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");
BIO_printf(bio_err, " -dsaparam read or generate DSA parameters, convert to DH\n");
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");
#ifndef OPENSSL_NO_ENGINE
BIO_printf(bio_err, " -engine e use engine e, possibly a hardware device.\n");
#endif
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
if (g && !num)
num = DEFBITS;
if (dsaparam) {
if (g) {
BIO_printf(bio_err, "generator may not be chosen for DSA parameters\n");
goto end;
}
} else
{
/* DH parameters */
if (num && !g)
g = 2;
}
if (num) {
BN_GENCB cb;
BN_GENCB_set(&cb, dh_cb, bio_err);
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)) {
if (dsa)
DSA_free(dsa);
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
{
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)) {
ERR_print_errors(bio_err);
goto end;
}
}
} 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;
}
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
{
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 = malloc(len);
if (data == NULL) {
perror("malloc");
goto end;
}
printf("#ifndef HEADER_DH_H\n"
"#include <openssl/dh.h>\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; i < l; i++) {
if ((i % 12) == 0)
printf("\n\t\t");
printf("0x%02X, ", data[i]);
}
printf("\n\t\t};\n");
l = BN_bn2bin(dh->g, data);
printf("\tstatic unsigned char dh%d_g[] = {", bits);
for (i = 0; i < l; i++) {
if ((i % 12) == 0)
printf("\n\t\t");
printf("0x%02X, ", data[i]);
}
printf("\n\t\t};\n");
printf("\tDH *dh;\n\n");
printf("\tif ((dh = DH_new()) == NULL) return(NULL);\n");
printf("\tdh->p = 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 = %ld;\n", dh->length);
printf("\treturn(dh);\n\t}\n");
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_all(out);
if (dh != NULL)
DH_free(dh);
return (ret);
}
