diff options
Diffstat (limited to 'usr.bin/openssl/ecparam.c')
| -rw-r--r-- | usr.bin/openssl/ecparam.c | 613 |
1 files changed, 613 insertions, 0 deletions
diff --git a/usr.bin/openssl/ecparam.c b/usr.bin/openssl/ecparam.c new file mode 100644 index 00000000000..9623cb96ce1 --- /dev/null +++ b/usr.bin/openssl/ecparam.c @@ -0,0 +1,613 @@ +/* $OpenBSD: ecparam.c,v 1.1 2014/08/26 17:47:24 jsing Exp $ */ +/* + * Written by Nils Larsch for the OpenSSL project. + */ +/* ==================================================================== + * Copyright (c) 1998-2005 The OpenSSL Project. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * + * 3. All advertising materials mentioning features or use of this + * software must display the following acknowledgment: + * "This product includes software developed by the OpenSSL Project + * for use in the OpenSSL Toolkit. (http://www.openssl.org/)" + * + * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to + * endorse or promote products derived from this software without + * prior written permission. For written permission, please contact + * openssl-core@openssl.org. + * + * 5. Products derived from this software may not be called "OpenSSL" + * nor may "OpenSSL" appear in their names without prior written + * permission of the OpenSSL Project. + * + * 6. Redistributions of any form whatsoever must retain the following + * acknowledgment: + * "This product includes software developed by the OpenSSL Project + * for use in the OpenSSL Toolkit (http://www.openssl.org/)" + * + * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY + * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR + * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, + * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED + * OF THE POSSIBILITY OF SUCH DAMAGE. + * ==================================================================== + * + * This product includes cryptographic software written by Eric Young + * (eay@cryptsoft.com). This product includes software written by Tim + * Hudson (tjh@cryptsoft.com). + * + */ +/* ==================================================================== + * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED. + * + * Portions of the attached software ("Contribution") are developed by + * SUN MICROSYSTEMS, INC., and are contributed to the OpenSSL project. + * + * The Contribution is licensed pursuant to the OpenSSL open source + * license provided above. + * + * The elliptic curve binary polynomial software is originally written by + * Sheueling Chang Shantz and Douglas Stebila of Sun Microsystems Laboratories. + * + */ + +#include <openssl/opensslconf.h> + +#ifndef OPENSSL_NO_EC + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <time.h> + +#include "apps.h" + +#include <openssl/bio.h> +#include <openssl/bn.h> +#include <openssl/ec.h> +#include <openssl/err.h> +#include <openssl/pem.h> +#include <openssl/x509.h> + +/* -inform arg - input format - default PEM (DER or PEM) + * -outform arg - output format - default PEM + * -in arg - input file - default stdin + * -out arg - output file - default stdout + * -noout - do not print the ec parameter + * -text - print the ec parameters in text form + * -check - validate the ec parameters + * -C - print a 'C' function creating the parameters + * -name arg - use the ec parameters with 'short name' name + * -list_curves - prints a list of all currently available curve 'short names' + * -conv_form arg - specifies the point conversion form + * - possible values: compressed + * uncompressed (default) + * hybrid + * -param_enc arg - specifies the way the ec parameters are encoded + * in the asn1 der encoding + * possible values: named_curve (default) + * explicit + * -no_seed - if 'explicit' parameters are chosen do not use the seed + * -genkey - generate ec key + * -engine e - use engine e, possibly a hardware device + */ + + +static int ecparam_print_var(BIO *, BIGNUM *, const char *, int, unsigned char *); + +int ecparam_main(int, char **); + +int +ecparam_main(int argc, char **argv) +{ + EC_GROUP *group = NULL; + point_conversion_form_t form = POINT_CONVERSION_UNCOMPRESSED; + int new_form = 0; + int asn1_flag = OPENSSL_EC_NAMED_CURVE; + int new_asn1_flag = 0; + char *curve_name = NULL; + int list_curves = 0, no_seed = 0, check = 0, badops = 0, text = 0, + i, genkey = 0; + char *infile = NULL, *outfile = NULL, *prog; + BIO *in = NULL, *out = NULL; + int informat, outformat, noout = 0, C = 0, ret = 1; + char *engine = NULL; + + BIGNUM *ec_p = NULL, *ec_a = NULL, *ec_b = NULL, *ec_gen = NULL, + *ec_order = NULL, *ec_cofactor = NULL; + unsigned char *buffer = NULL; + + informat = FORMAT_PEM; + outformat = FORMAT_PEM; + + prog = argv[0]; + argc--; + argv++; + while (argc >= 1) { + if (strcmp(*argv, "-inform") == 0) { + if (--argc < 1) + goto bad; + informat = str2fmt(*(++argv)); + } else if (strcmp(*argv, "-outform") == 0) { + if (--argc < 1) + goto bad; + outformat = str2fmt(*(++argv)); + } else if (strcmp(*argv, "-in") == 0) { + if (--argc < 1) + goto bad; + infile = *(++argv); + } else if (strcmp(*argv, "-out") == 0) { + if (--argc < 1) + goto bad; + outfile = *(++argv); + } else if (strcmp(*argv, "-text") == 0) + text = 1; + else if (strcmp(*argv, "-C") == 0) + C = 1; + else if (strcmp(*argv, "-check") == 0) + check = 1; + else if (strcmp(*argv, "-name") == 0) { + if (--argc < 1) + goto bad; + curve_name = *(++argv); + } else if (strcmp(*argv, "-list_curves") == 0) + list_curves = 1; + else if (strcmp(*argv, "-conv_form") == 0) { + if (--argc < 1) + goto bad; + ++argv; + new_form = 1; + if (strcmp(*argv, "compressed") == 0) + form = POINT_CONVERSION_COMPRESSED; + else if (strcmp(*argv, "uncompressed") == 0) + form = POINT_CONVERSION_UNCOMPRESSED; + else if (strcmp(*argv, "hybrid") == 0) + form = POINT_CONVERSION_HYBRID; + else + goto bad; + } else if (strcmp(*argv, "-param_enc") == 0) { + if (--argc < 1) + goto bad; + ++argv; + new_asn1_flag = 1; + if (strcmp(*argv, "named_curve") == 0) + asn1_flag = OPENSSL_EC_NAMED_CURVE; + else if (strcmp(*argv, "explicit") == 0) + asn1_flag = 0; + else + goto bad; + } else if (strcmp(*argv, "-no_seed") == 0) + no_seed = 1; + else if (strcmp(*argv, "-noout") == 0) + noout = 1; + else if (strcmp(*argv, "-genkey") == 0) { + genkey = 1; + } else if (strcmp(*argv, "-engine") == 0) { + if (--argc < 1) + goto bad; + engine = *(++argv); + } else { + BIO_printf(bio_err, "unknown option %s\n", *argv); + badops = 1; + break; + } + argc--; + argv++; + } + + if (badops) { +bad: + BIO_printf(bio_err, "%s [options] <infile >outfile\n", prog); + BIO_printf(bio_err, "where options are\n"); + BIO_printf(bio_err, " -inform arg input format - " + "default PEM (DER or PEM)\n"); + BIO_printf(bio_err, " -outform arg output format - " + "default PEM\n"); + BIO_printf(bio_err, " -in arg input file - " + "default stdin\n"); + BIO_printf(bio_err, " -out arg output file - " + "default stdout\n"); + BIO_printf(bio_err, " -noout do not print the " + "ec parameter\n"); + BIO_printf(bio_err, " -text print the ec " + "parameters in text form\n"); + BIO_printf(bio_err, " -check validate the ec " + "parameters\n"); + BIO_printf(bio_err, " -C print a 'C' " + "function creating the parameters\n"); + BIO_printf(bio_err, " -name arg use the " + "ec parameters with 'short name' name\n"); + BIO_printf(bio_err, " -list_curves prints a list of " + "all currently available curve 'short names'\n"); + BIO_printf(bio_err, " -conv_form arg specifies the " + "point conversion form \n"); + BIO_printf(bio_err, " possible values:" + " compressed\n"); + BIO_printf(bio_err, " " + " uncompressed (default)\n"); + BIO_printf(bio_err, " " + " hybrid\n"); + BIO_printf(bio_err, " -param_enc arg specifies the way" + " the ec parameters are encoded\n"); + BIO_printf(bio_err, " in the asn1 der " + "encoding\n"); + BIO_printf(bio_err, " possible values:" + " named_curve (default)\n"); + BIO_printf(bio_err, " " + " explicit\n"); + BIO_printf(bio_err, " -no_seed if 'explicit'" + " parameters are chosen do not" + " use the seed\n"); + BIO_printf(bio_err, " -genkey generate ec" + " key\n"); + BIO_printf(bio_err, " -engine e use engine e, " + "possibly a hardware device\n"); + goto end; + } + ERR_load_crypto_strings(); + + in = BIO_new(BIO_s_file()); + out = BIO_new(BIO_s_file()); + if ((in == NULL) || (out == NULL)) { + ERR_print_errors(bio_err); + goto end; + } + if (infile == NULL) + BIO_set_fp(in, stdin, BIO_NOCLOSE); + else { + if (BIO_read_filename(in, infile) <= 0) { + perror(infile); + goto end; + } + } + if (outfile == NULL) { + BIO_set_fp(out, stdout, BIO_NOCLOSE); + } else { + if (BIO_write_filename(out, outfile) <= 0) { + perror(outfile); + goto end; + } + } + +#ifndef OPENSSL_NO_ENGINE + setup_engine(bio_err, engine, 0); +#endif + + if (list_curves) { + EC_builtin_curve *curves = NULL; + size_t crv_len = 0; + size_t n = 0; + + crv_len = EC_get_builtin_curves(NULL, 0); + + curves = reallocarray(NULL, crv_len, sizeof(EC_builtin_curve)); + + if (curves == NULL) + goto end; + + if (!EC_get_builtin_curves(curves, crv_len)) { + 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); + } + + 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")) { + BIO_printf(bio_err, "using curve name prime192v1 " + "instead of secp192r1\n"); + nid = NID_X9_62_prime192v1; + } else if (!strcmp(curve_name, "secp256r1")) { + 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) { + 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 if (informat == FORMAT_PEM) { + group = PEM_read_bio_ECPKParameters(in, NULL, NULL, NULL); + } else { + BIO_printf(bio_err, "bad input format specified\n"); + goto end; + } + + 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) { + if (group == NULL) + BIO_printf(bio_err, "no elliptic curve parameters\n"); + 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); + } else + 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("malloc"); + goto end; + } + is_prime = (EC_METHOD_get_field_type(meth) == + NID_X9_62_prime_field); + + if (is_prime) { + if (!EC_GROUP_get_curve_GFp(group, ec_p, ec_a, + ec_b, NULL)) + goto end; + } else { + /* TODO */ + 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 = malloc(buf_len); + + if (buffer == NULL) { + perror("malloc"); + goto end; + } + ecparam_print_var(out, ec_p, "ec_p", len, buffer); + ecparam_print_var(out, ec_a, "ec_a", len, buffer); + ecparam_print_var(out, ec_b, "ec_b", len, buffer); + ecparam_print_var(out, ec_gen, "ec_gen", len, buffer); + ecparam_print_var(out, ec_order, "ec_order", len, buffer); + ecparam_print_var(out, ec_cofactor, "ec_cofactor", len, + buffer); + + BIO_printf(out, "\n\n"); + + BIO_printf(out, "EC_GROUP *get_ec_group_%d(void)\n\t{\n", len); + BIO_printf(out, "\tint ok=0;\n"); + BIO_printf(out, "\tEC_GROUP *group = NULL;\n"); + BIO_printf(out, "\tEC_POINT *point = NULL;\n"); + BIO_printf(out, "\tBIGNUM *tmp_1 = NULL, *tmp_2 = NULL, " + "*tmp_3 = NULL;\n\n"); + BIO_printf(out, "\tif ((tmp_1 = BN_bin2bn(ec_p_%d, " + "sizeof(ec_p_%d), NULL)) == NULL)\n\t\t" + "goto err;\n", len, len); + BIO_printf(out, "\tif ((tmp_2 = BN_bin2bn(ec_a_%d, " + "sizeof(ec_a_%d), NULL)) == NULL)\n\t\t" + "goto err;\n", len, len); + BIO_printf(out, "\tif ((tmp_3 = BN_bin2bn(ec_b_%d, " + "sizeof(ec_b_%d), NULL)) == NULL)\n\t\t" + "goto err;\n", len, len); + if (is_prime) { + BIO_printf(out, "\tif ((group = EC_GROUP_new_curve_" + "GFp(tmp_1, tmp_2, tmp_3, NULL)) == NULL)" + "\n\t\tgoto err;\n\n"); + } else { + /* TODO */ + goto end; + } + BIO_printf(out, "\t/* build generator */\n"); + BIO_printf(out, "\tif ((tmp_1 = BN_bin2bn(ec_gen_%d, " + "sizeof(ec_gen_%d), tmp_1)) == NULL)" + "\n\t\tgoto err;\n", len, len); + BIO_printf(out, "\tpoint = EC_POINT_bn2point(group, tmp_1, " + "NULL, NULL);\n"); + BIO_printf(out, "\tif (point == NULL)\n\t\tgoto err;\n"); + BIO_printf(out, "\tif ((tmp_2 = BN_bin2bn(ec_order_%d, " + "sizeof(ec_order_%d), tmp_2)) == NULL)" + "\n\t\tgoto err;\n", len, len); + BIO_printf(out, "\tif ((tmp_3 = BN_bin2bn(ec_cofactor_%d, " + "sizeof(ec_cofactor_%d), tmp_3)) == NULL)" + "\n\t\tgoto err;\n", len, len); + BIO_printf(out, "\tif (!EC_GROUP_set_generator(group, point," + " tmp_2, tmp_3))\n\t\tgoto err;\n"); + BIO_printf(out, "\n\tok=1;\n"); + BIO_printf(out, "err:\n"); + BIO_printf(out, "\tif (tmp_1)\n\t\tBN_free(tmp_1);\n"); + BIO_printf(out, "\tif (tmp_2)\n\t\tBN_free(tmp_2);\n"); + BIO_printf(out, "\tif (tmp_3)\n\t\tBN_free(tmp_3);\n"); + BIO_printf(out, "\tif (point)\n\t\tEC_POINT_free(point);\n"); + BIO_printf(out, "\tif (!ok)\n"); + BIO_printf(out, "\t\t{\n"); + BIO_printf(out, "\t\tEC_GROUP_free(group);\n"); + BIO_printf(out, "\t\tgroup = NULL;\n"); + BIO_printf(out, "\t\t}\n"); + BIO_printf(out, "\treturn(group);\n\t}\n"); + } + if (!noout) { + if (outformat == FORMAT_ASN1) + i = i2d_ECPKParameters_bio(out, group); + else if (outformat == FORMAT_PEM) + i = PEM_write_bio_ECPKParameters(out, group); + else { + BIO_printf(bio_err, "bad output format specified for" + " outfile\n"); + goto end; + } + 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) { + EC_KEY_free(eckey); + goto end; + } + + if (!EC_KEY_generate_key(eckey)) { + EC_KEY_free(eckey); + goto end; + } + if (outformat == FORMAT_ASN1) + i = i2d_ECPrivateKey_bio(out, eckey); + else if (outformat == FORMAT_PEM) + i = PEM_write_bio_ECPrivateKey(out, eckey, NULL, + NULL, 0, NULL, NULL); + else { + BIO_printf(bio_err, "bad output format specified " + "for outfile\n"); + EC_KEY_free(eckey); + goto end; + } + EC_KEY_free(eckey); + } + ret = 0; +end: + if (ec_p) + BN_free(ec_p); + if (ec_a) + BN_free(ec_a); + if (ec_b) + BN_free(ec_b); + if (ec_gen) + BN_free(ec_gen); + if (ec_order) + BN_free(ec_order); + if (ec_cofactor) + BN_free(ec_cofactor); + free(buffer); + BIO_free(in); + if (out != NULL) + BIO_free_all(out); + if (group != NULL) + EC_GROUP_free(group); + + return (ret); +} + +static int +ecparam_print_var(BIO * out, BIGNUM * in, const char *var, + int len, unsigned char *buffer) +{ + BIO_printf(out, "static unsigned char %s_%d[] = {", var, len); + if (BN_is_zero(in)) + BIO_printf(out, "\n\t0x00"); + else { + int i, l; + + l = BN_bn2bin(in, buffer); + for (i = 0; i < l - 1; i++) { + if ((i % 12) == 0) + BIO_printf(out, "\n\t"); + BIO_printf(out, "0x%02X,", buffer[i]); + } + if ((i % 12) == 0) + BIO_printf(out, "\n\t"); + BIO_printf(out, "0x%02X", buffer[i]); + } + BIO_printf(out, "\n\t};\n\n"); + return 1; +} +#endif |