[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_CHECK_NAMED,
    OPT_R_ENUM
} OPTION_CHOICE;

const OPTIONS ecparam_options[] = {
    OPT_SECTION("General"),
    {"help", OPT_HELP, '-', "Display this summary"},
    {"list_curves", OPT_LIST_CURVES, '-',
     "Prints a list of all curve 'short names'"},
# ifndef OPENSSL_NO_ENGINE
    {"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"},
# endif

    {"genkey", OPT_GENKEY, '-', "Generate ec key"},
    {"in", OPT_IN, '<', "Input file  - default stdin"},
    {"inform", OPT_INFORM, 'F', "Input format - default PEM (DER or PEM)"},
    {"out", OPT_OUT, '>', "Output file - default stdout"},
    {"outform", OPT_OUTFORM, 'F', "Output format - default PEM"},

    OPT_SECTION("Output"),
    {"text", OPT_TEXT, '-', "Print the ec parameters in text form"},
    {"C", OPT_C, '-', "Print a 'C' function creating the parameters"},
    {"noout", OPT_NOOUT, '-', "Do not print the ec parameter"},
    {"param_enc", OPT_PARAM_ENC, 's',
     "Specifies the way the ec parameters are encoded"},

    OPT_SECTION("Parameter"),
    {"check", OPT_CHECK, '-', "Validate the ec parameters"},
    {"check_named", OPT_CHECK_NAMED, '-',
     "Check that named EC curve parameters have not been modified"},
    {"no_seed", OPT_NO_SEED, '-',
     "If 'explicit' parameters are chosen do not use the seed"},
    {"name", OPT_NAME, 's',
     "Use the ec parameters with specified 'short name'"},
    {"conv_form", OPT_CONV_FORM, 's', "Specifies the point conversion form "},

    OPT_R_OPTIONS,
    {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, check_named = 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_CHECK_NAMED:
            check_named = 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_named) {
        BIO_printf(bio_err, "validating named elliptic curve parameters: ");
        if (EC_GROUP_check_named_curve(group, 0, NULL) <= 0) {
            BIO_printf(bio_err, "failed\n");
            ERR_print_errors(bio_err);
            goto end;
        }
        BIO_printf(bio_err, "ok\n");
    }

    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,
8402cd5f	33	OPT_CONV_FORM, OPT_PARAM_ENC, OPT_GENKEY, OPT_ENGINE, OPT_CHECK_NAMED,
3ee1eac2	34	OPT_R_ENUM
7e1b7485 RS	35	} OPTION_CHOICE;
7e1b7485 RS	36
44c83ebd	37	const OPTIONS ecparam_options[] = {
5388f986	38	OPT_SECTION("General"),
7e1b7485	39	{"help", OPT_HELP, '-', "Display this summary"},
5388f986 RS	40	{"list_curves", OPT_LIST_CURVES, '-',
	41	"Prints a list of all curve 'short names'"},
	42	# ifndef OPENSSL_NO_ENGINE
	43	{"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"},
	44	# endif
	45
	46	{"genkey", OPT_GENKEY, '-', "Generate ec key"},
7e1b7485	47	{"in", OPT_IN, '<', "Input file - default stdin"},
5388f986	48	{"inform", OPT_INFORM, 'F', "Input format - default PEM (DER or PEM)"},
7e1b7485	49	{"out", OPT_OUT, '>', "Output file - default stdout"},
5388f986 RS	50	{"outform", OPT_OUTFORM, 'F', "Output format - default PEM"},
	51
	52	OPT_SECTION("Output"),
7e1b7485 RS	53	{"text", OPT_TEXT, '-', "Print the ec parameters in text form"},
7e1b7485 RS	54	{"C", OPT_C, '-', "Print a 'C' function creating the parameters"},
5388f986 RS	55	{"noout", OPT_NOOUT, '-', "Do not print the ec parameter"},
	56	{"param_enc", OPT_PARAM_ENC, 's',
	57	"Specifies the way the ec parameters are encoded"},
	58
	59	OPT_SECTION("Parameter"),
7e1b7485	60	{"check", OPT_CHECK, '-', "Validate the ec parameters"},
8402cd5f SL	61	{"check_named", OPT_CHECK_NAMED, '-',
8402cd5f SL	62	"Check that named EC curve parameters have not been modified"},
7e1b7485 RS	63	{"no_seed", OPT_NO_SEED, '-',
7e1b7485 RS	64	"If 'explicit' parameters are chosen do not use the seed"},
7e1b7485 RS	65	{"name", OPT_NAME, 's',
	66	"Use the ec parameters with specified 'short name'"},
	67	{"conv_form", OPT_CONV_FORM, 's', "Specifies the point conversion form "},
5388f986	68
3ee1eac2	69	OPT_R_OPTIONS,
7e1b7485 RS	70	{NULL}
	71	};
	72
df2ee0e2	73	static OPT_PAIR forms[] = {
7e1b7485 RS	74	{"compressed", POINT_CONVERSION_COMPRESSED},
	75	{"uncompressed", POINT_CONVERSION_UNCOMPRESSED},
	76	{"hybrid", POINT_CONVERSION_HYBRID},
	77	{NULL}
	78	};
	79
df2ee0e2	80	static OPT_PAIR encodings[] = {
7e1b7485 RS	81	{"named_curve", OPENSSL_EC_NAMED_CURVE},
	82	{"explicit", 0},
	83	{NULL}
	84	};
	85
	86	int ecparam_main(int argc, char **argv)
0f113f3e	87	{
dd1abd44	88	ENGINE *e = NULL;
7e1b7485 RS	89	BIGNUM ec_gen = NULL, ec_order = NULL, *ec_cofactor = NULL;
	90	BIGNUM ec_p = NULL, ec_a = NULL, *ec_b = NULL;
	91	BIO in = NULL, out = NULL;
0f113f3e MC	92	EC_GROUP *group = NULL;
0f113f3e MC	93	point_conversion_form_t form = POINT_CONVERSION_UNCOMPRESSED;
3ee1eac2	94	char *curve_name = NULL;
333b070e	95	char infile = NULL, outfile = NULL, *prog;
0f113f3e	96	unsigned char *buffer = NULL;
7e1b7485 RS	97	OPTION_CHOICE o;
7e1b7485 RS	98	int asn1_flag = OPENSSL_EC_NAMED_CURVE, new_asn1_flag = 0;
3b061a00 RS	99	int informat = FORMAT_PEM, outformat = FORMAT_PEM, noout = 0, C = 0;
3b061a00 RS	100	int ret = 1, private = 0;
7e1b7485	101	int list_curves = 0, no_seed = 0, check = 0, new_form = 0;
8402cd5f	102	int text = 0, i, genkey = 0, check_named = 0;
7e1b7485 RS	103
	104	prog = opt_init(argc, argv, ecparam_options);
	105	while ((o = opt_next()) != OPT_EOF) {
	106	switch (o) {
	107	case OPT_EOF:
	108	case OPT_ERR:
	109	opthelp:
	110	BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
	111	goto end;
	112	case OPT_HELP:
	113	opt_help(ecparam_options);
	114	ret = 0;
	115	goto end;
	116	case OPT_INFORM:
	117	if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &informat))
	118	goto opthelp;
	119	break;
	120	case OPT_IN:
	121	infile = opt_arg();
	122	break;
	123	case OPT_OUTFORM:
	124	if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &outformat))
	125	goto opthelp;
	126	break;
	127	case OPT_OUT:
	128	outfile = opt_arg();
	129	break;
	130	case OPT_TEXT:
0f113f3e	131	text = 1;
7e1b7485 RS	132	break;
7e1b7485 RS	133	case OPT_C:
0f113f3e	134	C = 1;
7e1b7485 RS	135	break;
7e1b7485 RS	136	case OPT_CHECK:
0f113f3e	137	check = 1;
7e1b7485	138	break;
8402cd5f SL	139	case OPT_CHECK_NAMED:
	140	check_named = 1;
	141	break;
7e1b7485	142	case OPT_LIST_CURVES:
0f113f3e	143	list_curves = 1;
7e1b7485 RS	144	break;
7e1b7485 RS	145	case OPT_NO_SEED:
0f113f3e	146	no_seed = 1;
7e1b7485 RS	147	break;
7e1b7485 RS	148	case OPT_NOOUT:
0f113f3e	149	noout = 1;
7e1b7485 RS	150	break;
	151	case OPT_NAME:
	152	curve_name = opt_arg();
	153	break;
	154	case OPT_CONV_FORM:
	155	if (!opt_pair(opt_arg(), forms, &new_form))
	156	goto opthelp;
	157	form = new_form;
	158	new_form = 1;
	159	break;
	160	case OPT_PARAM_ENC:
	161	if (!opt_pair(opt_arg(), encodings, &asn1_flag))
	162	goto opthelp;
	163	new_asn1_flag = 1;
	164	break;
	165	case OPT_GENKEY:
3ee1eac2	166	genkey = 1;
7e1b7485	167	break;
3ee1eac2 RS	168	case OPT_R_CASES:
	169	if (!opt_rand(o))
	170	goto end;
7e1b7485 RS	171	break;
7e1b7485 RS	172	case OPT_ENGINE:
dd1abd44	173	e = setup_engine(opt_arg(), 0);
0f113f3e MC	174	break;
0f113f3e MC	175	}
0f113f3e	176	}
7e1b7485	177	argc = opt_num_rest();
03358517 KR	178	if (argc != 0)
	179	goto opthelp;
	180
3b061a00	181	private = genkey ? 1 : 0;
0f113f3e	182
bdd58d98	183	in = bio_open_default(infile, 'r', informat);
7e1b7485	184	if (in == NULL)
0f113f3e	185	goto end;
bdd58d98	186	out = bio_open_owner(outfile, outformat, private);
7e1b7485	187	if (out == NULL)
0f113f3e	188	goto end;
0f113f3e	189
0f113f3e MC	190	if (list_curves) {
0f113f3e MC	191	EC_builtin_curve *curves = NULL;
68dc6824 RS	192	size_t crv_len = EC_get_builtin_curves(NULL, 0);
68dc6824 RS	193	size_t n;
0f113f3e	194
b4faea50	195	curves = app_malloc((int)sizeof(curves) crv_len, "list curves");
0f113f3e MC	196	if (!EC_get_builtin_curves(curves, crv_len)) {
	197	OPENSSL_free(curves);
	198	goto end;
	199	}
	200
	201	for (n = 0; n < crv_len; n++) {
	202	const char *comment;
	203	const char *sname;
	204	comment = curves[n].comment;
	205	sname = OBJ_nid2sn(curves[n].nid);
	206	if (comment == NULL)
	207	comment = "CURVE DESCRIPTION NOT AVAILABLE";
	208	if (sname == NULL)
	209	sname = "";
	210
	211	BIO_printf(out, " %-10s: ", sname);
	212	BIO_printf(out, "%s\n", comment);
	213	}
	214
	215	OPENSSL_free(curves);
	216	ret = 0;
	217	goto end;
	218	}
	219
	220	if (curve_name != NULL) {
	221	int nid;
	222
	223	/*
	224	* workaround for the SECG curve names secp192r1 and secp256r1 (which
	225	* are the same as the curves prime192v1 and prime256v1 defined in
	226	* X9.62)
	227	*/
86885c28	228	if (strcmp(curve_name, "secp192r1") == 0) {
0f113f3e MC	229	BIO_printf(bio_err, "using curve name prime192v1 "
	230	"instead of secp192r1\n");
	231	nid = NID_X9_62_prime192v1;
86885c28	232	} else if (strcmp(curve_name, "secp256r1") == 0) {
0f113f3e MC	233	BIO_printf(bio_err, "using curve name prime256v1 "
	234	"instead of secp256r1\n");
	235	nid = NID_X9_62_prime256v1;
2234212c	236	} else {
0f113f3e	237	nid = OBJ_sn2nid(curve_name);
2234212c	238	}
0f113f3e MC	239
	240	if (nid == 0)
	241	nid = EC_curve_nist2nid(curve_name);
	242
	243	if (nid == 0) {
	244	BIO_printf(bio_err, "unknown curve name (%s)\n", curve_name);
	245	goto end;
	246	}
	247
	248	group = EC_GROUP_new_by_curve_name(nid);
	249	if (group == NULL) {
	250	BIO_printf(bio_err, "unable to create curve (%s)\n", curve_name);
	251	goto end;
	252	}
	253	EC_GROUP_set_asn1_flag(group, asn1_flag);
	254	EC_GROUP_set_point_conversion_form(group, form);
2234212c	255	} else if (informat == FORMAT_ASN1) {
0f113f3e	256	group = d2i_ECPKParameters_bio(in, NULL);
2234212c	257	} else {
0f113f3e	258	group = PEM_read_bio_ECPKParameters(in, NULL, NULL, NULL);
2234212c	259	}
0f113f3e MC	260	if (group == NULL) {
	261	BIO_printf(bio_err, "unable to load elliptic curve parameters\n");
	262	ERR_print_errors(bio_err);
	263	goto end;
	264	}
	265
	266	if (new_form)
	267	EC_GROUP_set_point_conversion_form(group, form);
	268
	269	if (new_asn1_flag)
	270	EC_GROUP_set_asn1_flag(group, asn1_flag);
	271
	272	if (no_seed) {
	273	EC_GROUP_set_seed(group, NULL, 0);
	274	}
	275
	276	if (text) {
	277	if (!ECPKParameters_print(out, group, 0))
	278	goto end;
	279	}
	280
8402cd5f SL	281	if (check_named) {
8402cd5f SL	282	BIO_printf(bio_err, "validating named elliptic curve parameters: ");
a9612d6c	283	if (EC_GROUP_check_named_curve(group, 0, NULL) <= 0) {
8402cd5f SL	284	BIO_printf(bio_err, "failed\n");
	285	ERR_print_errors(bio_err);
	286	goto end;
	287	}
	288	BIO_printf(bio_err, "ok\n");
	289	}
	290
0f113f3e	291	if (check) {
0f113f3e MC	292	BIO_printf(bio_err, "checking elliptic curve parameters: ");
	293	if (!EC_GROUP_check(group, NULL)) {
	294	BIO_printf(bio_err, "failed\n");
	295	ERR_print_errors(bio_err);
99dcd880 PW	296	goto end;
	297	}
	298	BIO_printf(bio_err, "ok\n");
0f113f3e MC	299
	300	}
	301
	302	if (C) {
	303	size_t buf_len = 0, tmp_len = 0;
	304	const EC_POINT *point;
	305	int is_prime, len = 0;
	306	const EC_METHOD *meth = EC_GROUP_method_of(group);
	307
7e1b7485 RS	308	if ((ec_p = BN_new()) == NULL
	309	\|\| (ec_a = BN_new()) == NULL
	310	\|\| (ec_b = BN_new()) == NULL
	311	\|\| (ec_gen = BN_new()) == NULL
	312	\|\| (ec_order = BN_new()) == NULL
	313	\|\| (ec_cofactor = BN_new()) == NULL) {
68dc6824	314	perror("Can't allocate BN");
0f113f3e MC	315	goto end;
	316	}
	317
	318	is_prime = (EC_METHOD_get_field_type(meth) == NID_X9_62_prime_field);
7e1b7485 RS	319	if (!is_prime) {
7e1b7485 RS	320	BIO_printf(bio_err, "Can only handle X9.62 prime fields\n");
0f113f3e MC	321	goto end;
	322	}
	323
9cc570d4	324	if (!EC_GROUP_get_curve(group, ec_p, ec_a, ec_b, NULL))
7e1b7485 RS	325	goto end;
7e1b7485 RS	326
0f113f3e MC	327	if ((point = EC_GROUP_get0_generator(group)) == NULL)
	328	goto end;
	329	if (!EC_POINT_point2bn(group, point,
	330	EC_GROUP_get_point_conversion_form(group),
	331	ec_gen, NULL))
	332	goto end;
	333	if (!EC_GROUP_get_order(group, ec_order, NULL))
	334	goto end;
	335	if (!EC_GROUP_get_cofactor(group, ec_cofactor, NULL))
	336	goto end;
	337
	338	if (!ec_p \|\| !ec_a \|\| !ec_b \|\| !ec_gen \|\| !ec_order \|\| !ec_cofactor)
	339	goto end;
	340
	341	len = BN_num_bits(ec_order);
	342
	343	if ((tmp_len = (size_t)BN_num_bytes(ec_p)) > buf_len)
	344	buf_len = tmp_len;
	345	if ((tmp_len = (size_t)BN_num_bytes(ec_a)) > buf_len)
	346	buf_len = tmp_len;
	347	if ((tmp_len = (size_t)BN_num_bytes(ec_b)) > buf_len)
	348	buf_len = tmp_len;
	349	if ((tmp_len = (size_t)BN_num_bytes(ec_gen)) > buf_len)
	350	buf_len = tmp_len;
	351	if ((tmp_len = (size_t)BN_num_bytes(ec_order)) > buf_len)
	352	buf_len = tmp_len;
	353	if ((tmp_len = (size_t)BN_num_bytes(ec_cofactor)) > buf_len)
	354	buf_len = tmp_len;
	355
68dc6824	356	buffer = app_malloc(buf_len, "BN buffer");
0f113f3e	357
7e1b7485 RS	358	BIO_printf(out, "EC_GROUP *get_ec_group_%d(void)\n{\n", len);
	359	print_bignum_var(out, ec_p, "ec_p", len, buffer);
	360	print_bignum_var(out, ec_a, "ec_a", len, buffer);
	361	print_bignum_var(out, ec_b, "ec_b", len, buffer);
	362	print_bignum_var(out, ec_gen, "ec_gen", len, buffer);
	363	print_bignum_var(out, ec_order, "ec_order", len, buffer);
	364	print_bignum_var(out, ec_cofactor, "ec_cofactor", len, buffer);
	365	BIO_printf(out, " int ok = 0;\n"
	366	" EC_GROUP *group = NULL;\n"
	367	" EC_POINT *point = NULL;\n"
	368	" BIGNUM *tmp_1 = NULL;\n"
	369	" BIGNUM *tmp_2 = NULL;\n"
	370	" BIGNUM *tmp_3 = NULL;\n"
	371	"\n");
	372
cbe29648	373	BIO_printf(out, " if ((tmp_1 = BN_bin2bn(ec_p_%d, sizeof(ec_p_%d), NULL)) == NULL)\n"
7e1b7485	374	" goto err;\n", len, len);
cbe29648	375	BIO_printf(out, " if ((tmp_2 = BN_bin2bn(ec_a_%d, sizeof(ec_a_%d), NULL)) == NULL)\n"
7e1b7485	376	" goto err;\n", len, len);
cbe29648	377	BIO_printf(out, " if ((tmp_3 = BN_bin2bn(ec_b_%d, sizeof(ec_b_%d), NULL)) == NULL)\n"
7e1b7485 RS	378	" goto err;\n", len, len);
	379	BIO_printf(out, " if ((group = EC_GROUP_new_curve_GFp(tmp_1, tmp_2, tmp_3, NULL)) == NULL)\n"
	380	" goto err;\n"
	381	"\n");
	382	BIO_printf(out, " /* build generator */\n");
cbe29648	383	BIO_printf(out, " if ((tmp_1 = BN_bin2bn(ec_gen_%d, sizeof(ec_gen_%d), tmp_1)) == NULL)\n"
7e1b7485 RS	384	" goto err;\n", len, len);
	385	BIO_printf(out, " point = EC_POINT_bn2point(group, tmp_1, NULL, NULL);\n");
	386	BIO_printf(out, " if (point == NULL)\n"
	387	" goto err;\n");
cbe29648	388	BIO_printf(out, " if ((tmp_2 = BN_bin2bn(ec_order_%d, sizeof(ec_order_%d), tmp_2)) == NULL)\n"
7e1b7485	389	" goto err;\n", len, len);
cbe29648	390	BIO_printf(out, " if ((tmp_3 = BN_bin2bn(ec_cofactor_%d, sizeof(ec_cofactor_%d), tmp_3)) == NULL)\n"
7e1b7485 RS	391	" goto err;\n", len, len);
	392	BIO_printf(out, " if (!EC_GROUP_set_generator(group, point, tmp_2, tmp_3))\n"
	393	" goto err;\n"
	394	"ok = 1;"
	395	"\n");
	396	BIO_printf(out, "err:\n"
	397	" BN_free(tmp_1);\n"
	398	" BN_free(tmp_2);\n"
	399	" BN_free(tmp_3);\n"
	400	" EC_POINT_free(point);\n"
	401	" if (!ok) {\n"
	402	" EC_GROUP_free(group);\n"
	403	" return NULL;\n"
	404	" }\n"
	405	" return (group);\n"
	406	"}\n");
0f113f3e MC	407	}
0f113f3e MC	408
4bdc25b0 BE	409	if (outformat == FORMAT_ASN1 && genkey)
	410	noout = 1;
	411
0f113f3e MC	412	if (!noout) {
	413	if (outformat == FORMAT_ASN1)
	414	i = i2d_ECPKParameters_bio(out, group);
7e1b7485	415	else
0f113f3e	416	i = PEM_write_bio_ECPKParameters(out, group);
0f113f3e MC	417	if (!i) {
	418	BIO_printf(bio_err, "unable to write elliptic "
	419	"curve parameters\n");
	420	ERR_print_errors(bio_err);
	421	goto end;
	422	}
	423	}
	424
0f113f3e MC	425	if (genkey) {
	426	EC_KEY *eckey = EC_KEY_new();
	427
	428	if (eckey == NULL)
	429	goto end;
	430
f6de4eb7 DSH	431	if (EC_KEY_set_group(eckey, group) == 0) {
	432	BIO_printf(bio_err, "unable to set group when generating key\n");
	433	EC_KEY_free(eckey);
	434	ERR_print_errors(bio_err);
0f113f3e	435	goto end;
f6de4eb7	436	}
0f113f3e	437
4bdc25b0 BE	438	if (new_form)
	439	EC_KEY_set_conv_form(eckey, form);
	440
0f113f3e	441	if (!EC_KEY_generate_key(eckey)) {
f6de4eb7	442	BIO_printf(bio_err, "unable to generate key\n");
0f113f3e	443	EC_KEY_free(eckey);
f6de4eb7	444	ERR_print_errors(bio_err);
0f113f3e MC	445	goto end;
0f113f3e MC	446	}
3b061a00	447	assert(private);
0f113f3e MC	448	if (outformat == FORMAT_ASN1)
0f113f3e MC	449	i = i2d_ECPrivateKey_bio(out, eckey);
7e1b7485	450	else
0f113f3e MC	451	i = PEM_write_bio_ECPrivateKey(out, eckey, NULL,
0f113f3e MC	452	NULL, 0, NULL, NULL);
0f113f3e MC	453	EC_KEY_free(eckey);
	454	}
	455
0f113f3e MC	456	ret = 0;
0f113f3e MC	457	end:
23a1d5e9 RS	458	BN_free(ec_p);
	459	BN_free(ec_a);
	460	BN_free(ec_b);
	461	BN_free(ec_gen);
	462	BN_free(ec_order);
	463	BN_free(ec_cofactor);
b548a1f1	464	OPENSSL_free(buffer);
dd1abd44 RL	465	EC_GROUP_free(group);
dd1abd44 RL	466	release_engine(e);
ca3a82c3 RS	467	BIO_free(in);
ca3a82c3 RS	468	BIO_free_all(out);
26a7d938	469	return ret;
5dbd3efc BM	470	}
5dbd3efc BM	471
5dbd3efc	472	#endif