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