diff options
Diffstat (limited to 'openssl-1.1.0h/apps/ecparam.c')
| -rw-r--r-- | openssl-1.1.0h/apps/ecparam.c | 471 |
1 files changed, 471 insertions, 0 deletions
diff --git a/openssl-1.1.0h/apps/ecparam.c b/openssl-1.1.0h/apps/ecparam.c new file mode 100644 index 0000000..999f748 --- /dev/null +++ b/openssl-1.1.0h/apps/ecparam.c @@ -0,0 +1,471 @@ +/* + * Copyright 2002-2018 The OpenSSL Project Authors. All Rights Reserved. + * + * Licensed under the OpenSSL license (the "License"). You may not use + * this file except in compliance with the License. You can obtain a copy + * in the file LICENSE in the source distribution or at + * https://www.openssl.org/source/license.html + */ + +/* ==================================================================== + * 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> +#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 <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_RAND, OPT_ENGINE +} OPTION_CHOICE; + +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"}, + {"rand", OPT_RAND, 's', "Files to use for random number input"}, +# 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, *inrand = 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, need_rand = 0, 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 = need_rand = 1; + break; + case OPT_RAND: + inrand = opt_arg(); + need_rand = 1; + 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_GFp(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 (need_rand) { + app_RAND_load_file(NULL, (inrand != NULL)); + if (inrand != NULL) + BIO_printf(bio_err, "%ld semi-random bytes loaded\n", + app_RAND_load_files(inrand)); + } + + if (genkey) { + EC_KEY *eckey = EC_KEY_new(); + + if (eckey == NULL) + goto end; + + assert(need_rand); + + 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); + } + + if (need_rand) + app_RAND_write_file(NULL); + + 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 |