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

/*
 * Copyright 2002-2018 The OpenSSL Project Authors. All Rights Reserved.
 * Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved
 *
 * Licensed under the Apache License 2.0 (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_EC
NON_EMPTY_TRANSLATION_UNIT
#else

# include <stdio.h>
# include <stdlib.h>
# include <time.h>
# include <string.h>
# include "apps.h"
# include "progs.h"
# include <openssl/bio.h>
# include <openssl/err.h>
# include <openssl/bn.h>
# include <openssl/ec.h>
# include <openssl/x509.h>
# include <openssl/pem.h>

typedef enum OPTION_choice {
    OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
    OPT_INFORM, OPT_OUTFORM, OPT_IN, OPT_OUT, OPT_TEXT, OPT_C,
    OPT_CHECK, OPT_LIST_CURVES, OPT_NO_SEED, OPT_NOOUT, OPT_NAME,
    OPT_CONV_FORM, OPT_PARAM_ENC, OPT_GENKEY, OPT_ENGINE,
    OPT_R_ENUM
} OPTION_CHOICE;

const OPTIONS ecparam_options[] = {
    {"help", OPT_HELP, '-', "Display this summary"},
    {"inform", OPT_INFORM, 'F', "Input format - default PEM (DER or PEM)"},
    {"outform", OPT_OUTFORM, 'F', "Output format - default PEM"},
    {"in", OPT_IN, '<', "Input file  - default stdin"},
    {"out", OPT_OUT, '>', "Output file - default stdout"},
    {"text", OPT_TEXT, '-', "Print the ec parameters in text form"},
    {"C", OPT_C, '-', "Print a 'C' function creating the parameters"},
    {"check", OPT_CHECK, '-', "Validate the ec parameters"},
    {"list_curves", OPT_LIST_CURVES, '-',
     "Prints a list of all curve 'short names'"},
    {"no_seed", OPT_NO_SEED, '-',
     "If 'explicit' parameters are chosen do not use the seed"},
    {"noout", OPT_NOOUT, '-', "Do not print the ec parameter"},
    {"name", OPT_NAME, 's',
     "Use the ec parameters with specified 'short name'"},
    {"conv_form", OPT_CONV_FORM, 's', "Specifies the point conversion form "},
    {"param_enc", OPT_PARAM_ENC, 's',
     "Specifies the way the ec parameters are encoded"},
    {"genkey", OPT_GENKEY, '-', "Generate ec key"},
    OPT_R_OPTIONS,
# ifndef OPENSSL_NO_ENGINE
    {"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"},
# endif
    {NULL}
};

static OPT_PAIR forms[] = {
    {"compressed", POINT_CONVERSION_COMPRESSED},
    {"uncompressed", POINT_CONVERSION_UNCOMPRESSED},
    {"hybrid", POINT_CONVERSION_HYBRID},
    {NULL}
};

static OPT_PAIR encodings[] = {
    {"named_curve", OPENSSL_EC_NAMED_CURVE},
    {"explicit", 0},
    {NULL}
};

int ecparam_main(int argc, char **argv)
{
    ENGINE *e = NULL;
    BIGNUM *ec_gen = NULL, *ec_order = NULL, *ec_cofactor = NULL;
    BIGNUM *ec_p = NULL, *ec_a = NULL, *ec_b = NULL;
    BIO *in = NULL, *out = NULL;
    EC_GROUP *group = NULL;
    point_conversion_form_t form = POINT_CONVERSION_UNCOMPRESSED;
    char *curve_name = NULL;
    char *infile = NULL, *outfile = NULL, *prog;
    unsigned char *buffer = NULL;
    OPTION_CHOICE o;
    int asn1_flag = OPENSSL_EC_NAMED_CURVE, new_asn1_flag = 0;
    int informat = FORMAT_PEM, outformat = FORMAT_PEM, noout = 0, C = 0;
    int ret = 1, private = 0;
    int list_curves = 0, no_seed = 0, check = 0, new_form = 0;
    int text = 0, i, genkey = 0;

    prog = opt_init(argc, argv, ecparam_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(ecparam_options);
            ret = 0;
            goto end;
        case OPT_INFORM:
            if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &informat))
                goto opthelp;
            break;
        case OPT_IN:
            infile = opt_arg();
            break;
        case OPT_OUTFORM:
            if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &outformat))
                goto opthelp;
            break;
        case OPT_OUT:
            outfile = opt_arg();
            break;
        case OPT_TEXT:
            text = 1;
            break;
        case OPT_C:
            C = 1;
            break;
        case OPT_CHECK:
            check = 1;
            break;
        case OPT_LIST_CURVES:
            list_curves = 1;
            break;
        case OPT_NO_SEED:
            no_seed = 1;
            break;
        case OPT_NOOUT:
            noout = 1;
            break;
        case OPT_NAME:
            curve_name = opt_arg();
            break;
        case OPT_CONV_FORM:
            if (!opt_pair(opt_arg(), forms, &new_form))
                goto opthelp;
            form = new_form;
            new_form = 1;
            break;
        case OPT_PARAM_ENC:
            if (!opt_pair(opt_arg(), encodings, &asn1_flag))
                goto opthelp;
            new_asn1_flag = 1;
            break;
        case OPT_GENKEY:
            genkey = 1;
            break;
        case OPT_R_CASES:
            if (!opt_rand(o))
                goto end;
            break;
        case OPT_ENGINE:
            e = setup_engine(opt_arg(), 0);
            break;
        }
    }
    argc = opt_num_rest();
    if (argc != 0)
        goto opthelp;

    private = genkey ? 1 : 0;

    in = bio_open_default(infile, 'r', informat);
    if (in == NULL)
        goto end;
    out = bio_open_owner(outfile, outformat, private);
    if (out == NULL)
        goto end;

    if (list_curves) {
        EC_builtin_curve *curves = NULL;
        size_t crv_len = EC_get_builtin_curves(NULL, 0);
        size_t n;

        curves = app_malloc((int)sizeof(*curves) * crv_len, "list curves");
        if (!EC_get_builtin_curves(curves, crv_len)) {
            OPENSSL_free(curves);
            goto end;
        }

        for (n = 0; n < crv_len; n++) {
            const char *comment;
            const char *sname;
            comment = curves[n].comment;
            sname = OBJ_nid2sn(curves[n].nid);
            if (comment == NULL)
                comment = "CURVE DESCRIPTION NOT AVAILABLE";
            if (sname == NULL)
                sname = "";

            BIO_printf(out, "  %-10s: ", sname);
            BIO_printf(out, "%s\n", comment);
        }

        OPENSSL_free(curves);
        ret = 0;
        goto end;
    }

    if (curve_name != NULL) {
        int nid;

        /*
         * workaround for the SECG curve names secp192r1 and secp256r1 (which
         * are the same as the curves prime192v1 and prime256v1 defined in
         * X9.62)
         */
        if (strcmp(curve_name, "secp192r1") == 0) {
            BIO_printf(bio_err, "using curve name prime192v1 "
                       "instead of secp192r1\n");
            nid = NID_X9_62_prime192v1;
        } else if (strcmp(curve_name, "secp256r1") == 0) {
            BIO_printf(bio_err, "using curve name prime256v1 "
                       "instead of secp256r1\n");
            nid = NID_X9_62_prime256v1;
        } else {
            nid = OBJ_sn2nid(curve_name);
        }

        if (nid == 0)
            nid = EC_curve_nist2nid(curve_name);

        if (nid == 0) {
            BIO_printf(bio_err, "unknown curve name (%s)\n", curve_name);
            goto end;
        }

        group = EC_GROUP_new_by_curve_name(nid);
        if (group == NULL) {
            BIO_printf(bio_err, "unable to create curve (%s)\n", curve_name);
            goto end;
        }
        EC_GROUP_set_asn1_flag(group, asn1_flag);
        EC_GROUP_set_point_conversion_form(group, form);
    } else if (informat == FORMAT_ASN1) {
        group = d2i_ECPKParameters_bio(in, NULL);
    } else {
        group = PEM_read_bio_ECPKParameters(in, NULL, NULL, NULL);
    }
    if (group == NULL) {
        BIO_printf(bio_err, "unable to load elliptic curve parameters\n");
        ERR_print_errors(bio_err);
        goto end;
    }

    if (new_form)
        EC_GROUP_set_point_conversion_form(group, form);

    if (new_asn1_flag)
        EC_GROUP_set_asn1_flag(group, asn1_flag);

    if (no_seed) {
        EC_GROUP_set_seed(group, NULL, 0);
    }

    if (text) {
        if (!ECPKParameters_print(out, group, 0))
            goto end;
    }

    if (check) {
        BIO_printf(bio_err, "checking elliptic curve parameters: ");
        if (!EC_GROUP_check(group, NULL)) {
            BIO_printf(bio_err, "failed\n");
            ERR_print_errors(bio_err);
            goto end;
        }
        BIO_printf(bio_err, "ok\n");

    }

    if (C) {
        size_t buf_len = 0, tmp_len = 0;
        const EC_POINT *point;
        int is_prime, len = 0;
        const EC_METHOD *meth = EC_GROUP_method_of(group);

        if ((ec_p = BN_new()) == NULL
                || (ec_a = BN_new()) == NULL
                || (ec_b = BN_new()) == NULL
                || (ec_gen = BN_new()) == NULL
                || (ec_order = BN_new()) == NULL
                || (ec_cofactor = BN_new()) == NULL) {
            perror("Can't allocate BN");
            goto end;
        }

        is_prime = (EC_METHOD_get_field_type(meth) == NID_X9_62_prime_field);
        if (!is_prime) {
            BIO_printf(bio_err, "Can only handle X9.62 prime fields\n");
            goto end;
        }

        if (!EC_GROUP_get_curve(group, ec_p, ec_a, ec_b, NULL))
            goto end;

        if ((point = EC_GROUP_get0_generator(group)) == NULL)
            goto end;
        if (!EC_POINT_point2bn(group, point,
                               EC_GROUP_get_point_conversion_form(group),
                               ec_gen, NULL))
            goto end;
        if (!EC_GROUP_get_order(group, ec_order, NULL))
            goto end;
        if (!EC_GROUP_get_cofactor(group, ec_cofactor, NULL))
            goto end;

        if (!ec_p || !ec_a || !ec_b || !ec_gen || !ec_order || !ec_cofactor)
            goto end;

        len = BN_num_bits(ec_order);

        if ((tmp_len = (size_t)BN_num_bytes(ec_p)) > buf_len)
            buf_len = tmp_len;
        if ((tmp_len = (size_t)BN_num_bytes(ec_a)) > buf_len)
            buf_len = tmp_len;
        if ((tmp_len = (size_t)BN_num_bytes(ec_b)) > buf_len)
            buf_len = tmp_len;
        if ((tmp_len = (size_t)BN_num_bytes(ec_gen)) > buf_len)
            buf_len = tmp_len;
        if ((tmp_len = (size_t)BN_num_bytes(ec_order)) > buf_len)
            buf_len = tmp_len;
        if ((tmp_len = (size_t)BN_num_bytes(ec_cofactor)) > buf_len)
            buf_len = tmp_len;

        buffer = app_malloc(buf_len, "BN buffer");

        BIO_printf(out, "EC_GROUP *get_ec_group_%d(void)\n{\n", len);
        print_bignum_var(out, ec_p, "ec_p", len, buffer);
        print_bignum_var(out, ec_a, "ec_a", len, buffer);
        print_bignum_var(out, ec_b, "ec_b", len, buffer);
        print_bignum_var(out, ec_gen, "ec_gen", len, buffer);
        print_bignum_var(out, ec_order, "ec_order", len, buffer);
        print_bignum_var(out, ec_cofactor, "ec_cofactor", len, buffer);
        BIO_printf(out, "    int ok = 0;\n"
                        "    EC_GROUP *group = NULL;\n"
                        "    EC_POINT *point = NULL;\n"
                        "    BIGNUM *tmp_1 = NULL;\n"
                        "    BIGNUM *tmp_2 = NULL;\n"
                        "    BIGNUM *tmp_3 = NULL;\n"
                        "\n");

        BIO_printf(out, "    if ((tmp_1 = BN_bin2bn(ec_p_%d, sizeof(ec_p_%d), NULL)) == NULL)\n"
                        "        goto err;\n", len, len);
        BIO_printf(out, "    if ((tmp_2 = BN_bin2bn(ec_a_%d, sizeof(ec_a_%d), NULL)) == NULL)\n"
                        "        goto err;\n", len, len);
        BIO_printf(out, "    if ((tmp_3 = BN_bin2bn(ec_b_%d, sizeof(ec_b_%d), NULL)) == NULL)\n"
                        "        goto err;\n", len, len);
        BIO_printf(out, "    if ((group = EC_GROUP_new_curve_GFp(tmp_1, tmp_2, tmp_3, NULL)) == NULL)\n"
                        "        goto err;\n"
                        "\n");
        BIO_printf(out, "    /* build generator */\n");
        BIO_printf(out, "    if ((tmp_1 = BN_bin2bn(ec_gen_%d, sizeof(ec_gen_%d), tmp_1)) == NULL)\n"
                        "        goto err;\n", len, len);
        BIO_printf(out, "    point = EC_POINT_bn2point(group, tmp_1, NULL, NULL);\n");
        BIO_printf(out, "    if (point == NULL)\n"
                        "        goto err;\n");
        BIO_printf(out, "    if ((tmp_2 = BN_bin2bn(ec_order_%d, sizeof(ec_order_%d), tmp_2)) == NULL)\n"
                        "        goto err;\n", len, len);
        BIO_printf(out, "    if ((tmp_3 = BN_bin2bn(ec_cofactor_%d, sizeof(ec_cofactor_%d), tmp_3)) == NULL)\n"
                        "        goto err;\n", len, len);
        BIO_printf(out, "    if (!EC_GROUP_set_generator(group, point, tmp_2, tmp_3))\n"
                        "        goto err;\n"
                        "ok = 1;"
                        "\n");
        BIO_printf(out, "err:\n"
                        "    BN_free(tmp_1);\n"
                        "    BN_free(tmp_2);\n"
                        "    BN_free(tmp_3);\n"
                        "    EC_POINT_free(point);\n"
                        "    if (!ok) {\n"
                        "        EC_GROUP_free(group);\n"
                        "        return NULL;\n"
                        "    }\n"
                        "    return (group);\n"
                        "}\n");
    }

    if (outformat == FORMAT_ASN1 && genkey)
        noout = 1;

    if (!noout) {
        if (outformat == FORMAT_ASN1)
            i = i2d_ECPKParameters_bio(out, group);
        else
            i = PEM_write_bio_ECPKParameters(out, group);
        if (!i) {
            BIO_printf(bio_err, "unable to write elliptic "
                       "curve parameters\n");
            ERR_print_errors(bio_err);
            goto end;
        }
    }

    if (genkey) {
        EC_KEY *eckey = EC_KEY_new();

        if (eckey == NULL)
            goto end;

        if (EC_KEY_set_group(eckey, group) == 0) {
            BIO_printf(bio_err, "unable to set group when generating key\n");
            EC_KEY_free(eckey);
            ERR_print_errors(bio_err);
            goto end;
        }

        if (new_form)
            EC_KEY_set_conv_form(eckey, form);

        if (!EC_KEY_generate_key(eckey)) {
            BIO_printf(bio_err, "unable to generate key\n");
            EC_KEY_free(eckey);
            ERR_print_errors(bio_err);
            goto end;
        }
        assert(private);
        if (outformat == FORMAT_ASN1)
            i = i2d_ECPrivateKey_bio(out, eckey);
        else
            i = PEM_write_bio_ECPrivateKey(out, eckey, NULL,
                                           NULL, 0, NULL, NULL);
        EC_KEY_free(eckey);
    }

    ret = 0;
 end:
    BN_free(ec_p);
    BN_free(ec_a);
    BN_free(ec_b);
    BN_free(ec_gen);
    BN_free(ec_order);
    BN_free(ec_cofactor);
    OPENSSL_free(buffer);
    EC_GROUP_free(group);
    release_engine(e);
    BIO_free(in);
    BIO_free_all(out);
    return ret;
}

#endif
Commit	Line	Data
14a7cfb3	1	/*
6738bf14	2	* Copyright 2002-2018 The OpenSSL Project Authors. All Rights Reserved.
aa8f3d76	3	* Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved
5dbd3efc	4	*
dffa7520	5	* Licensed under the Apache License 2.0 (the "License"). You may not use
846e33c7 RS	6	* this file except in compliance with the License. You can obtain a copy
	7	* in the file LICENSE in the source distribution or at
	8	* https://www.openssl.org/source/license.html
5dbd3efc	9	*/
846e33c7	10
6e04afb8	11	#include <openssl/opensslconf.h>
effaf4de RS	12	#ifdef OPENSSL_NO_EC
	13	NON_EMPTY_TRANSLATION_UNIT
	14	#else
	15
0f113f3e MC	16	# include <stdio.h>
	17	# include <stdlib.h>
	18	# include <time.h>
	19	# include <string.h>
	20	# include "apps.h"
dab2cd68	21	# include "progs.h"
0f113f3e MC	22	# include <openssl/bio.h>
	23	# include <openssl/err.h>
	24	# include <openssl/bn.h>
	25	# include <openssl/ec.h>
	26	# include <openssl/x509.h>
	27	# include <openssl/pem.h>
	28
7e1b7485 RS	29	typedef enum OPTION_choice {
	30	OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
	31	OPT_INFORM, OPT_OUTFORM, OPT_IN, OPT_OUT, OPT_TEXT, OPT_C,
	32	OPT_CHECK, OPT_LIST_CURVES, OPT_NO_SEED, OPT_NOOUT, OPT_NAME,
3ee1eac2 RS	33	OPT_CONV_FORM, OPT_PARAM_ENC, OPT_GENKEY, OPT_ENGINE,
3ee1eac2 RS	34	OPT_R_ENUM
7e1b7485 RS	35	} OPTION_CHOICE;
7e1b7485 RS	36
44c83ebd	37	const OPTIONS ecparam_options[] = {
7e1b7485 RS	38	{"help", OPT_HELP, '-', "Display this summary"},
	39	{"inform", OPT_INFORM, 'F', "Input format - default PEM (DER or PEM)"},
	40	{"outform", OPT_OUTFORM, 'F', "Output format - default PEM"},
	41	{"in", OPT_IN, '<', "Input file - default stdin"},
	42	{"out", OPT_OUT, '>', "Output file - default stdout"},
	43	{"text", OPT_TEXT, '-', "Print the ec parameters in text form"},
	44	{"C", OPT_C, '-', "Print a 'C' function creating the parameters"},
	45	{"check", OPT_CHECK, '-', "Validate the ec parameters"},
	46	{"list_curves", OPT_LIST_CURVES, '-',
	47	"Prints a list of all curve 'short names'"},
	48	{"no_seed", OPT_NO_SEED, '-',
	49	"If 'explicit' parameters are chosen do not use the seed"},
	50	{"noout", OPT_NOOUT, '-', "Do not print the ec parameter"},
	51	{"name", OPT_NAME, 's',
	52	"Use the ec parameters with specified 'short name'"},
	53	{"conv_form", OPT_CONV_FORM, 's', "Specifies the point conversion form "},
	54	{"param_enc", OPT_PARAM_ENC, 's',
	55	"Specifies the way the ec parameters are encoded"},
	56	{"genkey", OPT_GENKEY, '-', "Generate ec key"},
3ee1eac2	57	OPT_R_OPTIONS,
7e1b7485 RS	58	# ifndef OPENSSL_NO_ENGINE
	59	{"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"},
	60	# endif
	61	{NULL}
	62	};
	63
df2ee0e2	64	static OPT_PAIR forms[] = {
7e1b7485 RS	65	{"compressed", POINT_CONVERSION_COMPRESSED},
	66	{"uncompressed", POINT_CONVERSION_UNCOMPRESSED},
	67	{"hybrid", POINT_CONVERSION_HYBRID},
	68	{NULL}
	69	};
	70
df2ee0e2	71	static OPT_PAIR encodings[] = {
7e1b7485 RS	72	{"named_curve", OPENSSL_EC_NAMED_CURVE},
	73	{"explicit", 0},
	74	{NULL}
	75	};
	76
	77	int ecparam_main(int argc, char **argv)
0f113f3e	78	{
dd1abd44	79	ENGINE *e = NULL;
7e1b7485 RS	80	BIGNUM ec_gen = NULL, ec_order = NULL, *ec_cofactor = NULL;
	81	BIGNUM ec_p = NULL, ec_a = NULL, *ec_b = NULL;
	82	BIO in = NULL, out = NULL;
0f113f3e MC	83	EC_GROUP *group = NULL;
0f113f3e MC	84	point_conversion_form_t form = POINT_CONVERSION_UNCOMPRESSED;
3ee1eac2	85	char *curve_name = NULL;
333b070e	86	char infile = NULL, outfile = NULL, *prog;
0f113f3e	87	unsigned char *buffer = NULL;
7e1b7485 RS	88	OPTION_CHOICE o;
7e1b7485 RS	89	int asn1_flag = OPENSSL_EC_NAMED_CURVE, new_asn1_flag = 0;
3b061a00 RS	90	int informat = FORMAT_PEM, outformat = FORMAT_PEM, noout = 0, C = 0;
3b061a00 RS	91	int ret = 1, private = 0;
7e1b7485	92	int list_curves = 0, no_seed = 0, check = 0, new_form = 0;
3ee1eac2	93	int text = 0, i, genkey = 0;
7e1b7485 RS	94
	95	prog = opt_init(argc, argv, ecparam_options);
	96	while ((o = opt_next()) != OPT_EOF) {
	97	switch (o) {
	98	case OPT_EOF:
	99	case OPT_ERR:
	100	opthelp:
	101	BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
	102	goto end;
	103	case OPT_HELP:
	104	opt_help(ecparam_options);
	105	ret = 0;
	106	goto end;
	107	case OPT_INFORM:
	108	if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &informat))
	109	goto opthelp;
	110	break;
	111	case OPT_IN:
	112	infile = opt_arg();
	113	break;
	114	case OPT_OUTFORM:
	115	if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &outformat))
	116	goto opthelp;
	117	break;
	118	case OPT_OUT:
	119	outfile = opt_arg();
	120	break;
	121	case OPT_TEXT:
0f113f3e	122	text = 1;
7e1b7485 RS	123	break;
7e1b7485 RS	124	case OPT_C:
0f113f3e	125	C = 1;
7e1b7485 RS	126	break;
7e1b7485 RS	127	case OPT_CHECK:
0f113f3e	128	check = 1;
7e1b7485 RS	129	break;
7e1b7485 RS	130	case OPT_LIST_CURVES:
0f113f3e	131	list_curves = 1;
7e1b7485 RS	132	break;
7e1b7485 RS	133	case OPT_NO_SEED:
0f113f3e	134	no_seed = 1;
7e1b7485 RS	135	break;
7e1b7485 RS	136	case OPT_NOOUT:
0f113f3e	137	noout = 1;
7e1b7485 RS	138	break;
	139	case OPT_NAME:
	140	curve_name = opt_arg();
	141	break;
	142	case OPT_CONV_FORM:
	143	if (!opt_pair(opt_arg(), forms, &new_form))
	144	goto opthelp;
	145	form = new_form;
	146	new_form = 1;
	147	break;
	148	case OPT_PARAM_ENC:
	149	if (!opt_pair(opt_arg(), encodings, &asn1_flag))
	150	goto opthelp;
	151	new_asn1_flag = 1;
	152	break;
	153	case OPT_GENKEY:
3ee1eac2	154	genkey = 1;
7e1b7485	155	break;
3ee1eac2 RS	156	case OPT_R_CASES:
	157	if (!opt_rand(o))
	158	goto end;
7e1b7485 RS	159	break;
7e1b7485 RS	160	case OPT_ENGINE:
dd1abd44	161	e = setup_engine(opt_arg(), 0);
0f113f3e MC	162	break;
0f113f3e MC	163	}
0f113f3e	164	}
7e1b7485	165	argc = opt_num_rest();
03358517 KR	166	if (argc != 0)
	167	goto opthelp;
	168
3b061a00	169	private = genkey ? 1 : 0;
0f113f3e	170
bdd58d98	171	in = bio_open_default(infile, 'r', informat);
7e1b7485	172	if (in == NULL)
0f113f3e	173	goto end;
bdd58d98	174	out = bio_open_owner(outfile, outformat, private);
7e1b7485	175	if (out == NULL)
0f113f3e	176	goto end;
0f113f3e	177
0f113f3e MC	178	if (list_curves) {
0f113f3e MC	179	EC_builtin_curve *curves = NULL;
68dc6824 RS	180	size_t crv_len = EC_get_builtin_curves(NULL, 0);
68dc6824 RS	181	size_t n;
0f113f3e	182
b4faea50	183	curves = app_malloc((int)sizeof(curves) crv_len, "list curves");
0f113f3e MC	184	if (!EC_get_builtin_curves(curves, crv_len)) {
	185	OPENSSL_free(curves);
	186	goto end;
	187	}
	188
	189	for (n = 0; n < crv_len; n++) {
	190	const char *comment;
	191	const char *sname;
	192	comment = curves[n].comment;
	193	sname = OBJ_nid2sn(curves[n].nid);
	194	if (comment == NULL)
	195	comment = "CURVE DESCRIPTION NOT AVAILABLE";
	196	if (sname == NULL)
	197	sname = "";
	198
	199	BIO_printf(out, " %-10s: ", sname);
	200	BIO_printf(out, "%s\n", comment);
	201	}
	202
	203	OPENSSL_free(curves);
	204	ret = 0;
	205	goto end;
	206	}
	207
	208	if (curve_name != NULL) {
	209	int nid;
	210
	211	/*
	212	* workaround for the SECG curve names secp192r1 and secp256r1 (which
	213	* are the same as the curves prime192v1 and prime256v1 defined in
	214	* X9.62)
	215	*/
86885c28	216	if (strcmp(curve_name, "secp192r1") == 0) {
0f113f3e MC	217	BIO_printf(bio_err, "using curve name prime192v1 "
	218	"instead of secp192r1\n");
	219	nid = NID_X9_62_prime192v1;
86885c28	220	} else if (strcmp(curve_name, "secp256r1") == 0) {
0f113f3e MC	221	BIO_printf(bio_err, "using curve name prime256v1 "
	222	"instead of secp256r1\n");
	223	nid = NID_X9_62_prime256v1;
2234212c	224	} else {
0f113f3e	225	nid = OBJ_sn2nid(curve_name);
2234212c	226	}
0f113f3e MC	227
	228	if (nid == 0)
	229	nid = EC_curve_nist2nid(curve_name);
	230
	231	if (nid == 0) {
	232	BIO_printf(bio_err, "unknown curve name (%s)\n", curve_name);
	233	goto end;
	234	}
	235
	236	group = EC_GROUP_new_by_curve_name(nid);
	237	if (group == NULL) {
	238	BIO_printf(bio_err, "unable to create curve (%s)\n", curve_name);
	239	goto end;
	240	}
	241	EC_GROUP_set_asn1_flag(group, asn1_flag);
	242	EC_GROUP_set_point_conversion_form(group, form);
2234212c	243	} else if (informat == FORMAT_ASN1) {
0f113f3e	244	group = d2i_ECPKParameters_bio(in, NULL);
2234212c	245	} else {
0f113f3e	246	group = PEM_read_bio_ECPKParameters(in, NULL, NULL, NULL);
2234212c	247	}
0f113f3e MC	248	if (group == NULL) {
	249	BIO_printf(bio_err, "unable to load elliptic curve parameters\n");
	250	ERR_print_errors(bio_err);
	251	goto end;
	252	}
	253
	254	if (new_form)
	255	EC_GROUP_set_point_conversion_form(group, form);
	256
	257	if (new_asn1_flag)
	258	EC_GROUP_set_asn1_flag(group, asn1_flag);
	259
	260	if (no_seed) {
	261	EC_GROUP_set_seed(group, NULL, 0);
	262	}
	263
	264	if (text) {
	265	if (!ECPKParameters_print(out, group, 0))
	266	goto end;
	267	}
	268
	269	if (check) {
0f113f3e MC	270	BIO_printf(bio_err, "checking elliptic curve parameters: ");
	271	if (!EC_GROUP_check(group, NULL)) {
	272	BIO_printf(bio_err, "failed\n");
	273	ERR_print_errors(bio_err);
99dcd880 PW	274	goto end;
	275	}
	276	BIO_printf(bio_err, "ok\n");
0f113f3e MC	277
	278	}
	279
	280	if (C) {
	281	size_t buf_len = 0, tmp_len = 0;
	282	const EC_POINT *point;
	283	int is_prime, len = 0;
	284	const EC_METHOD *meth = EC_GROUP_method_of(group);
	285
7e1b7485 RS	286	if ((ec_p = BN_new()) == NULL
	287	\|\| (ec_a = BN_new()) == NULL
	288	\|\| (ec_b = BN_new()) == NULL
	289	\|\| (ec_gen = BN_new()) == NULL
	290	\|\| (ec_order = BN_new()) == NULL
	291	\|\| (ec_cofactor = BN_new()) == NULL) {
68dc6824	292	perror("Can't allocate BN");
0f113f3e MC	293	goto end;
	294	}
	295
	296	is_prime = (EC_METHOD_get_field_type(meth) == NID_X9_62_prime_field);
7e1b7485 RS	297	if (!is_prime) {
7e1b7485 RS	298	BIO_printf(bio_err, "Can only handle X9.62 prime fields\n");
0f113f3e MC	299	goto end;
	300	}
	301
9cc570d4	302	if (!EC_GROUP_get_curve(group, ec_p, ec_a, ec_b, NULL))
7e1b7485 RS	303	goto end;
7e1b7485 RS	304
0f113f3e MC	305	if ((point = EC_GROUP_get0_generator(group)) == NULL)
	306	goto end;
	307	if (!EC_POINT_point2bn(group, point,
	308	EC_GROUP_get_point_conversion_form(group),
	309	ec_gen, NULL))
	310	goto end;
	311	if (!EC_GROUP_get_order(group, ec_order, NULL))
	312	goto end;
	313	if (!EC_GROUP_get_cofactor(group, ec_cofactor, NULL))
	314	goto end;
	315
	316	if (!ec_p \|\| !ec_a \|\| !ec_b \|\| !ec_gen \|\| !ec_order \|\| !ec_cofactor)
	317	goto end;
	318
	319	len = BN_num_bits(ec_order);
	320
	321	if ((tmp_len = (size_t)BN_num_bytes(ec_p)) > buf_len)
	322	buf_len = tmp_len;
	323	if ((tmp_len = (size_t)BN_num_bytes(ec_a)) > buf_len)
	324	buf_len = tmp_len;
	325	if ((tmp_len = (size_t)BN_num_bytes(ec_b)) > buf_len)
	326	buf_len = tmp_len;
	327	if ((tmp_len = (size_t)BN_num_bytes(ec_gen)) > buf_len)
	328	buf_len = tmp_len;
	329	if ((tmp_len = (size_t)BN_num_bytes(ec_order)) > buf_len)
	330	buf_len = tmp_len;
	331	if ((tmp_len = (size_t)BN_num_bytes(ec_cofactor)) > buf_len)
	332	buf_len = tmp_len;
	333
68dc6824	334	buffer = app_malloc(buf_len, "BN buffer");
0f113f3e	335
7e1b7485 RS	336	BIO_printf(out, "EC_GROUP *get_ec_group_%d(void)\n{\n", len);
	337	print_bignum_var(out, ec_p, "ec_p", len, buffer);
	338	print_bignum_var(out, ec_a, "ec_a", len, buffer);
	339	print_bignum_var(out, ec_b, "ec_b", len, buffer);
	340	print_bignum_var(out, ec_gen, "ec_gen", len, buffer);
	341	print_bignum_var(out, ec_order, "ec_order", len, buffer);
	342	print_bignum_var(out, ec_cofactor, "ec_cofactor", len, buffer);
	343	BIO_printf(out, " int ok = 0;\n"
	344	" EC_GROUP *group = NULL;\n"
	345	" EC_POINT *point = NULL;\n"
	346	" BIGNUM *tmp_1 = NULL;\n"
	347	" BIGNUM *tmp_2 = NULL;\n"
	348	" BIGNUM *tmp_3 = NULL;\n"
	349	"\n");
	350
cbe29648	351	BIO_printf(out, " if ((tmp_1 = BN_bin2bn(ec_p_%d, sizeof(ec_p_%d), NULL)) == NULL)\n"
7e1b7485	352	" goto err;\n", len, len);
cbe29648	353	BIO_printf(out, " if ((tmp_2 = BN_bin2bn(ec_a_%d, sizeof(ec_a_%d), NULL)) == NULL)\n"
7e1b7485	354	" goto err;\n", len, len);
cbe29648	355	BIO_printf(out, " if ((tmp_3 = BN_bin2bn(ec_b_%d, sizeof(ec_b_%d), NULL)) == NULL)\n"
7e1b7485 RS	356	" goto err;\n", len, len);
	357	BIO_printf(out, " if ((group = EC_GROUP_new_curve_GFp(tmp_1, tmp_2, tmp_3, NULL)) == NULL)\n"
	358	" goto err;\n"
	359	"\n");
	360	BIO_printf(out, " /* build generator */\n");
cbe29648	361	BIO_printf(out, " if ((tmp_1 = BN_bin2bn(ec_gen_%d, sizeof(ec_gen_%d), tmp_1)) == NULL)\n"
7e1b7485 RS	362	" goto err;\n", len, len);
	363	BIO_printf(out, " point = EC_POINT_bn2point(group, tmp_1, NULL, NULL);\n");
	364	BIO_printf(out, " if (point == NULL)\n"
	365	" goto err;\n");
cbe29648	366	BIO_printf(out, " if ((tmp_2 = BN_bin2bn(ec_order_%d, sizeof(ec_order_%d), tmp_2)) == NULL)\n"
7e1b7485	367	" goto err;\n", len, len);
cbe29648	368	BIO_printf(out, " if ((tmp_3 = BN_bin2bn(ec_cofactor_%d, sizeof(ec_cofactor_%d), tmp_3)) == NULL)\n"
7e1b7485 RS	369	" goto err;\n", len, len);
	370	BIO_printf(out, " if (!EC_GROUP_set_generator(group, point, tmp_2, tmp_3))\n"
	371	" goto err;\n"
	372	"ok = 1;"
	373	"\n");
	374	BIO_printf(out, "err:\n"
	375	" BN_free(tmp_1);\n"
	376	" BN_free(tmp_2);\n"
	377	" BN_free(tmp_3);\n"
	378	" EC_POINT_free(point);\n"
	379	" if (!ok) {\n"
	380	" EC_GROUP_free(group);\n"
	381	" return NULL;\n"
	382	" }\n"
	383	" return (group);\n"
	384	"}\n");
0f113f3e MC	385	}
0f113f3e MC	386
4bdc25b0 BE	387	if (outformat == FORMAT_ASN1 && genkey)
	388	noout = 1;
	389
0f113f3e MC	390	if (!noout) {
	391	if (outformat == FORMAT_ASN1)
	392	i = i2d_ECPKParameters_bio(out, group);
7e1b7485	393	else
0f113f3e	394	i = PEM_write_bio_ECPKParameters(out, group);
0f113f3e MC	395	if (!i) {
	396	BIO_printf(bio_err, "unable to write elliptic "
	397	"curve parameters\n");
	398	ERR_print_errors(bio_err);
	399	goto end;
	400	}
	401	}
	402
0f113f3e MC	403	if (genkey) {
	404	EC_KEY *eckey = EC_KEY_new();
	405
	406	if (eckey == NULL)
	407	goto end;
	408
f6de4eb7 DSH	409	if (EC_KEY_set_group(eckey, group) == 0) {
	410	BIO_printf(bio_err, "unable to set group when generating key\n");
	411	EC_KEY_free(eckey);
	412	ERR_print_errors(bio_err);
0f113f3e	413	goto end;
f6de4eb7	414	}
0f113f3e	415
4bdc25b0 BE	416	if (new_form)
	417	EC_KEY_set_conv_form(eckey, form);
	418
0f113f3e	419	if (!EC_KEY_generate_key(eckey)) {
f6de4eb7	420	BIO_printf(bio_err, "unable to generate key\n");
0f113f3e	421	EC_KEY_free(eckey);
f6de4eb7	422	ERR_print_errors(bio_err);
0f113f3e MC	423	goto end;
0f113f3e MC	424	}
3b061a00	425	assert(private);
0f113f3e MC	426	if (outformat == FORMAT_ASN1)
0f113f3e MC	427	i = i2d_ECPrivateKey_bio(out, eckey);
7e1b7485	428	else
0f113f3e MC	429	i = PEM_write_bio_ECPrivateKey(out, eckey, NULL,
0f113f3e MC	430	NULL, 0, NULL, NULL);
0f113f3e MC	431	EC_KEY_free(eckey);
	432	}
	433
0f113f3e MC	434	ret = 0;
0f113f3e MC	435	end:
23a1d5e9 RS	436	BN_free(ec_p);
	437	BN_free(ec_a);
	438	BN_free(ec_b);
	439	BN_free(ec_gen);
	440	BN_free(ec_order);
	441	BN_free(ec_cofactor);
b548a1f1	442	OPENSSL_free(buffer);
dd1abd44 RL	443	EC_GROUP_free(group);
dd1abd44 RL	444	release_engine(e);
ca3a82c3 RS	445	BIO_free(in);
ca3a82c3 RS	446	BIO_free_all(out);
26a7d938	447	return ret;
5dbd3efc BM	448	}
5dbd3efc BM	449
5dbd3efc	450	#endif