[thirdparty/openssl.git] / apps / dhparam.c

/*
 * Copyright 1995-2017 The OpenSSL Project Authors. All Rights Reserved.
 *
 * Licensed under the OpenSSL license (the "License").  You may not use
 * this file except in compliance with the License.  You can obtain a copy
 * in the file LICENSE in the source distribution or at
 * https://www.openssl.org/source/license.html
 */

#include <openssl/opensslconf.h>
#ifdef OPENSSL_NO_DH
NON_EMPTY_TRANSLATION_UNIT
#else

# 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/dh.h>
# include <openssl/x509.h>
# include <openssl/pem.h>

# ifndef OPENSSL_NO_DSA
#  include <openssl/dsa.h>
# 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_DSAPARAM, OPT_C, OPT_2, OPT_5,
    OPT_R_ENUM
} OPTION_CHOICE;

const 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, '-', "Don't output any DH parameters"},
    OPT_R_OPTIONS,
    {"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;
    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
    /* 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 */
    }

    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)
            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, "#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, pbn, "dhp", bits, data);
        print_bignum_var(out, gbn, "dhg", bits, data);
        BIO_printf(out, "    DH *dh = DH_new();\n"
                        "    BIGNUM *dhp_bn, *dhg_bn;\n"
                        "\n"
                        "    if (dh == NULL)\n"
                        "        return NULL;\n");
        BIO_printf(out, "    dhp_bn = BN_bin2bn(dhp_%d, sizeof (dhp_%d), NULL);\n",
                   bits, bits);
        BIO_printf(out, "    dhg_bn = BN_bin2bn(dhg_%d, sizeof (dhg_%d), NULL);\n",
                   bits, bits);
        BIO_printf(out, "    if (dhp_bn == NULL || dhg_bn == NULL\n"
                        "            || !DH_set0_pqg(dh, dhp_bn, NULL, dhg_bn)) {\n"
                        "        DH_free(dh);\n"
                        "        BN_free(dhp_bn);\n"
                        "        BN_free(dhg_bn);\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"
                        "    }\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);
}

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;
}
#endif
Commit	Line	Data
846e33c7	1	/*
2234212c	2	* Copyright 1995-2017 The OpenSSL Project Authors. All Rights Reserved.
41918458	3	*
846e33c7 RS	4	* Licensed under the OpenSSL license (the "License"). You may not use
	5	* this file except in compliance with the License. You can obtain a copy
	6	* in the file LICENSE in the source distribution or at
	7	* https://www.openssl.org/source/license.html
41918458	8	*/
09483c58	9
effaf4de RS	10	#include <openssl/opensslconf.h>
	11	#ifdef OPENSSL_NO_DH
	12	NON_EMPTY_TRANSLATION_UNIT
	13	#else
	14
0f113f3e MC	15	# include <stdio.h>
	16	# include <stdlib.h>
	17	# include <time.h>
	18	# include <string.h>
	19	# include "apps.h"
	20	# include <openssl/bio.h>
	21	# include <openssl/err.h>
	22	# include <openssl/bn.h>
	23	# include <openssl/dh.h>
	24	# include <openssl/x509.h>
	25	# include <openssl/pem.h>
	26
	27	# ifndef OPENSSL_NO_DSA
	28	# include <openssl/dsa.h>
	29	# endif
41918458	30
0f113f3e	31	# define DEFBITS 2048
09483c58	32
6d23cf97	33	static int dh_cb(int p, int n, BN_GENCB *cb);
09483c58	34
7e1b7485 RS	35	typedef enum OPTION_choice {
	36	OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
	37	OPT_INFORM, OPT_OUTFORM, OPT_IN, OPT_OUT,
	38	OPT_ENGINE, OPT_CHECK, OPT_TEXT, OPT_NOOUT,
3ee1eac2 RS	39	OPT_DSAPARAM, OPT_C, OPT_2, OPT_5,
3ee1eac2 RS	40	OPT_R_ENUM
7e1b7485 RS	41	} OPTION_CHOICE;
7e1b7485 RS	42
44c83ebd	43	const OPTIONS dhparam_options[] = {
7e1b7485 RS	44	{OPT_HELP_STR, 1, '-', "Usage: %s [flags] [numbits]\n"},
	45	{OPT_HELP_STR, 1, '-', "Valid options are:\n"},
	46	{"help", OPT_HELP, '-', "Display this summary"},
	47	{"in", OPT_IN, '<', "Input file"},
	48	{"inform", OPT_INFORM, 'F', "Input format, DER or PEM"},
	49	{"outform", OPT_OUTFORM, 'F', "Output format, DER or PEM"},
	50	{"out", OPT_OUT, '>', "Output file"},
	51	{"check", OPT_CHECK, '-', "Check the DH parameters"},
	52	{"text", OPT_TEXT, '-', "Print a text form of the DH parameters"},
16e1b281	53	{"noout", OPT_NOOUT, '-', "Don't output any DH parameters"},
3ee1eac2	54	OPT_R_OPTIONS,
7e1b7485 RS	55	{"C", OPT_C, '-', "Print C code"},
	56	{"2", OPT_2, '-', "Generate parameters using 2 as the generator value"},
	57	{"5", OPT_5, '-', "Generate parameters using 5 as the generator value"},
7e1b7485 RS	58	# ifndef OPENSSL_NO_DSA
	59	{"dsaparam", OPT_DSAPARAM, '-',
	60	"Read or generate DSA parameters, convert to DH"},
9c3bcfa0 RS	61	# endif
	62	# ifndef OPENSSL_NO_ENGINE
	63	{"engine", OPT_ENGINE, 's', "Use engine e, possibly a hardware device"},
0f113f3e	64	# endif
7e1b7485 RS	65	{NULL}
	66	};
	67
	68	int dhparam_main(int argc, char **argv)
	69	{
	70	BIO in = NULL, out = NULL;
	71	DH *dh = NULL;
3ee1eac2	72	char infile = NULL, outfile = NULL, *prog;
dd1abd44	73	ENGINE *e = NULL;
83ae8124 MC	74	#ifndef OPENSSL_NO_DSA
	75	int dsaparam = 0;
	76	#endif
	77	int i, text = 0, C = 0, ret = 1, num = 0, g = 0;
7e1b7485 RS	78	int informat = FORMAT_PEM, outformat = FORMAT_PEM, check = 0, noout = 0;
	79	OPTION_CHOICE o;
	80
	81	prog = opt_init(argc, argv, dhparam_options);
	82	while ((o = opt_next()) != OPT_EOF) {
	83	switch (o) {
	84	case OPT_EOF:
	85	case OPT_ERR:
	86	opthelp:
	87	BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
	88	goto end;
	89	case OPT_HELP:
	90	opt_help(dhparam_options);
	91	ret = 0;
	92	goto end;
	93	case OPT_INFORM:
	94	if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &informat))
	95	goto opthelp;
	96	break;
	97	case OPT_OUTFORM:
	98	if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &outformat))
	99	goto opthelp;
	100	break;
	101	case OPT_IN:
	102	infile = opt_arg();
	103	break;
	104	case OPT_OUT:
	105	outfile = opt_arg();
	106	break;
	107	case OPT_ENGINE:
dd1abd44	108	e = setup_engine(opt_arg(), 0);
7e1b7485 RS	109	break;
7e1b7485 RS	110	case OPT_CHECK:
0f113f3e	111	check = 1;
7e1b7485 RS	112	break;
7e1b7485 RS	113	case OPT_TEXT:
0f113f3e	114	text = 1;
7e1b7485 RS	115	break;
7e1b7485 RS	116	case OPT_DSAPARAM:
83ae8124	117	#ifndef OPENSSL_NO_DSA
0f113f3e	118	dsaparam = 1;
83ae8124	119	#endif
7e1b7485 RS	120	break;
7e1b7485 RS	121	case OPT_C:
0f113f3e	122	C = 1;
7e1b7485 RS	123	break;
7e1b7485 RS	124	case OPT_2:
0f113f3e	125	g = 2;
7e1b7485 RS	126	break;
7e1b7485 RS	127	case OPT_5:
0f113f3e	128	g = 5;
7e1b7485 RS	129	break;
	130	case OPT_NOOUT:
	131	noout = 1;
	132	break;
3ee1eac2 RS	133	case OPT_R_CASES:
	134	if (!opt_rand(o))
	135	goto end;
7e1b7485 RS	136	break;
7e1b7485 RS	137	}
0f113f3e	138	}
7e1b7485 RS	139	argc = opt_num_rest();
7e1b7485 RS	140	argv = opt_rest();
0f113f3e	141
2234212c	142	if (argv[0] != NULL && (!opt_int(argv[0], &num) \|\| num <= 0))
0f113f3e	143	goto end;
0f113f3e	144
0f113f3e MC	145	if (g && !num)
	146	num = DEFBITS;
	147
	148	# ifndef OPENSSL_NO_DSA
7e1b7485 RS	149	if (dsaparam && g) {
	150	BIO_printf(bio_err,
	151	"generator may not be chosen for DSA parameters\n");
	152	goto end;
0f113f3e	153	}
7e1b7485 RS	154	# endif
	155	/* DH parameters */
	156	if (num && !g)
	157	g = 2;
0f113f3e MC	158
	159	if (num) {
	160
	161	BN_GENCB *cb;
	162	cb = BN_GENCB_new();
96487cdd	163	if (cb == NULL) {
0f113f3e MC	164	ERR_print_errors(bio_err);
	165	goto end;
	166	}
	167
	168	BN_GENCB_set(cb, dh_cb, bio_err);
0f113f3e MC	169
	170	# ifndef OPENSSL_NO_DSA
	171	if (dsaparam) {
	172	DSA *dsa = DSA_new();
	173
	174	BIO_printf(bio_err,
	175	"Generating DSA parameters, %d bit long prime\n", num);
96487cdd	176	if (dsa == NULL
0f113f3e MC	177	\|\| !DSA_generate_parameters_ex(dsa, num, NULL, 0, NULL, NULL,
0f113f3e MC	178	cb)) {
d6407083	179	DSA_free(dsa);
0f113f3e MC	180	BN_GENCB_free(cb);
	181	ERR_print_errors(bio_err);
	182	goto end;
	183	}
	184
	185	dh = DSA_dup_DH(dsa);
	186	DSA_free(dsa);
	187	if (dh == NULL) {
	188	BN_GENCB_free(cb);
	189	ERR_print_errors(bio_err);
	190	goto end;
	191	}
	192	} else
	193	# endif
	194	{
	195	dh = DH_new();
	196	BIO_printf(bio_err,
	197	"Generating DH parameters, %d bit long safe prime, generator %d\n",
	198	num, g);
	199	BIO_printf(bio_err, "This is going to take a long time\n");
96487cdd	200	if (dh == NULL \|\| !DH_generate_parameters_ex(dh, num, g, cb)) {
0f113f3e MC	201	BN_GENCB_free(cb);
	202	ERR_print_errors(bio_err);
	203	goto end;
	204	}
	205	}
	206
	207	BN_GENCB_free(cb);
0f113f3e MC	208	} else {
0f113f3e MC	209
bdd58d98	210	in = bio_open_default(infile, 'r', informat);
7e1b7485	211	if (in == NULL)
0f113f3e	212	goto end;
0f113f3e	213
0f113f3e MC	214	# ifndef OPENSSL_NO_DSA
	215	if (dsaparam) {
	216	DSA *dsa;
	217
	218	if (informat == FORMAT_ASN1)
	219	dsa = d2i_DSAparams_bio(in, NULL);
	220	else /* informat == FORMAT_PEM */
	221	dsa = PEM_read_bio_DSAparams(in, NULL, NULL, NULL);
	222
	223	if (dsa == NULL) {
	224	BIO_printf(bio_err, "unable to load DSA parameters\n");
	225	ERR_print_errors(bio_err);
	226	goto end;
	227	}
	228
	229	dh = DSA_dup_DH(dsa);
	230	DSA_free(dsa);
	231	if (dh == NULL) {
	232	ERR_print_errors(bio_err);
	233	goto end;
	234	}
	235	} else
	236	# endif
	237	{
18d20b5e MC	238	if (informat == FORMAT_ASN1) {
	239	/*
	240	* We have no PEM header to determine what type of DH params it
	241	* is. We'll just try both.
	242	*/
0f113f3e	243	dh = d2i_DHparams_bio(in, NULL);
18d20b5e MC	244	/* BIO_reset() returns 0 for success for file BIOs only!!! */
	245	if (dh == NULL && BIO_reset(in) == 0)
	246	dh = d2i_DHxparams_bio(in, NULL);
	247	} else {
	248	/* informat == FORMAT_PEM */
0f113f3e	249	dh = PEM_read_bio_DHparams(in, NULL, NULL, NULL);
18d20b5e	250	}
0f113f3e MC	251
	252	if (dh == NULL) {
	253	BIO_printf(bio_err, "unable to load DH parameters\n");
	254	ERR_print_errors(bio_err);
	255	goto end;
	256	}
	257	}
	258
	259	/* dh != NULL */
	260	}
	261
bdd58d98	262	out = bio_open_default(outfile, 'w', outformat);
7e1b7485	263	if (out == NULL)
0f113f3e	264	goto end;
0f113f3e MC	265
	266	if (text) {
	267	DHparams_print(out, dh);
	268	}
	269
	270	if (check) {
	271	if (!DH_check(dh, &i)) {
	272	ERR_print_errors(bio_err);
	273	goto end;
	274	}
	275	if (i & DH_CHECK_P_NOT_PRIME)
eeb21772	276	BIO_printf(bio_err, "WARNING: p value is not prime\n");
0f113f3e	277	if (i & DH_CHECK_P_NOT_SAFE_PRIME)
eeb21772 MC	278	BIO_printf(bio_err, "WARNING: p value is not a safe prime\n");
	279	if (i & DH_CHECK_Q_NOT_PRIME)
	280	BIO_printf(bio_err, "WARNING: q value is not a prime\n");
	281	if (i & DH_CHECK_INVALID_Q_VALUE)
	282	BIO_printf(bio_err, "WARNING: q value is invalid\n");
	283	if (i & DH_CHECK_INVALID_J_VALUE)
	284	BIO_printf(bio_err, "WARNING: j value is invalid\n");
0f113f3e	285	if (i & DH_UNABLE_TO_CHECK_GENERATOR)
eeb21772 MC	286	BIO_printf(bio_err,
eeb21772 MC	287	"WARNING: unable to check the generator value\n");
0f113f3e	288	if (i & DH_NOT_SUITABLE_GENERATOR)
eeb21772	289	BIO_printf(bio_err, "WARNING: the g value is not a generator\n");
0f113f3e	290	if (i == 0)
eeb21772 MC	291	BIO_printf(bio_err, "DH parameters appear to be ok.\n");
	292	if (num != 0 && i != 0) {
	293	/*
	294	* We have generated parameters but DH_check() indicates they are
	295	* invalid! This should never happen!
	296	*/
	297	BIO_printf(bio_err, "ERROR: Invalid parameters generated\n");
	298	goto end;
	299	}
0f113f3e MC	300	}
	301	if (C) {
	302	unsigned char *data;
7e1b7485	303	int len, bits;
2ac6115d	304	const BIGNUM pbn, gbn;
0f113f3e	305
0aeddcfa MC	306	len = DH_size(dh);
	307	bits = DH_bits(dh);
	308	DH_get0_pqg(dh, &pbn, NULL, &gbn);
68dc6824	309	data = app_malloc(len, "print a BN");
7e1b7485 RS	310	BIO_printf(out, "#ifndef HEADER_DH_H\n"
	311	"# include <openssl/dh.h>\n"
	312	"#endif\n"
	313	"\n");
	314	BIO_printf(out, "DH *get_dh%d()\n{\n", bits);
0aeddcfa MC	315	print_bignum_var(out, pbn, "dhp", bits, data);
	316	print_bignum_var(out, gbn, "dhg", bits, data);
	317	BIO_printf(out, " DH *dh = DH_new();\n"
	318	" BIGNUM dhp_bn, dhg_bn;\n"
7e1b7485 RS	319	"\n"
	320	" if (dh == NULL)\n"
	321	" return NULL;\n");
0aeddcfa MC	322	BIO_printf(out, " dhp_bn = BN_bin2bn(dhp_%d, sizeof (dhp_%d), NULL);\n",
	323	bits, bits);
	324	BIO_printf(out, " dhg_bn = BN_bin2bn(dhg_%d, sizeof (dhg_%d), NULL);\n",
	325	bits, bits);
	326	BIO_printf(out, " if (dhp_bn == NULL \|\| dhg_bn == NULL\n"
	327	" \|\| !DH_set0_pqg(dh, dhp_bn, NULL, dhg_bn)) {\n"
7e1b7485	328	" DH_free(dh);\n"
0aeddcfa MC	329	" BN_free(dhp_bn);\n"
0aeddcfa MC	330	" BN_free(dhg_bn);\n"
7e1b7485 RS	331	" return NULL;\n"
7e1b7485 RS	332	" }\n");
0aeddcfa	333	if (DH_get_length(dh) > 0)
7e1b7485	334	BIO_printf(out,
0aeddcfa MC	335	" if (!DH_set_length(dh, %ld)) {\n"
	336	" DH_free(dh);\n"
	337	" }\n", DH_get_length(dh));
7e1b7485	338	BIO_printf(out, " return dh;\n}\n");
0f113f3e MC	339	OPENSSL_free(data);
	340	}
	341
	342	if (!noout) {
2ac6115d	343	const BIGNUM *q;
0aeddcfa	344	DH_get0_pqg(dh, NULL, &q, NULL);
18d20b5e MC	345	if (outformat == FORMAT_ASN1) {
	346	if (q != NULL)
	347	i = i2d_DHxparams_bio(out, dh);
	348	else
	349	i = i2d_DHparams_bio(out, dh);
2234212c	350	} else if (q != NULL) {
7e1b7485	351	i = PEM_write_bio_DHxparams(out, dh);
2234212c	352	} else {
7e1b7485	353	i = PEM_write_bio_DHparams(out, dh);
2234212c	354	}
0f113f3e MC	355	if (!i) {
	356	BIO_printf(bio_err, "unable to write DH parameters\n");
	357	ERR_print_errors(bio_err);
	358	goto end;
	359	}
	360	}
	361	ret = 0;
	362	end:
ca3a82c3 RS	363	BIO_free(in);
ca3a82c3 RS	364	BIO_free_all(out);
d6407083	365	DH_free(dh);
dd1abd44	366	release_engine(e);
7e1b7485	367	return (ret);
0f113f3e	368	}
09483c58	369
6d23cf97	370	static int dh_cb(int p, int n, BN_GENCB *cb)
0f113f3e MC	371	{
	372	char c = '*';
	373
	374	if (p == 0)
	375	c = '.';
	376	if (p == 1)
	377	c = '+';
	378	if (p == 2)
	379	c = '*';
	380	if (p == 3)
	381	c = '\n';
	382	BIO_write(BN_GENCB_get_arg(cb), &c, 1);
	383	(void)BIO_flush(BN_GENCB_get_arg(cb));
	384	return 1;
	385	}
09483c58	386	#endif