360 lines
12 KiB
C
360 lines
12 KiB
C
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/*
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* Copyright 2002-2022 The OpenSSL Project Authors. All Rights Reserved.
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* Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved
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*
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* Licensed under the Apache License 2.0 (the "License"). You may not use
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* this file except in compliance with the License. You can obtain a copy
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* in the file LICENSE in the source distribution or at
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* https://www.openssl.org/source/license.html
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*/
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#include <string.h>
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#include <openssl/opensslconf.h>
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#include <openssl/evp.h>
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#include <openssl/encoder.h>
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#include <openssl/decoder.h>
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#include <openssl/core_names.h>
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#include <openssl/core_dispatch.h>
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#include <openssl/params.h>
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#include <openssl/err.h>
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#include "apps.h"
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#include "progs.h"
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#include "ec_common.h"
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typedef enum OPTION_choice {
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OPT_COMMON,
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OPT_INFORM, OPT_OUTFORM, OPT_IN, OPT_OUT, OPT_TEXT,
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OPT_CHECK, OPT_LIST_CURVES, OPT_NO_SEED, OPT_NOOUT, OPT_NAME,
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OPT_CONV_FORM, OPT_PARAM_ENC, OPT_GENKEY, OPT_ENGINE, OPT_CHECK_NAMED,
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OPT_R_ENUM, OPT_PROV_ENUM
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} OPTION_CHOICE;
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const OPTIONS ecparam_options[] = {
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OPT_SECTION("General"),
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{"help", OPT_HELP, '-', "Display this summary"},
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{"list_curves", OPT_LIST_CURVES, '-',
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"Prints a list of all curve 'short names'"},
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#ifndef OPENSSL_NO_ENGINE
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{"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"},
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#endif
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{"genkey", OPT_GENKEY, '-', "Generate ec key"},
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{"in", OPT_IN, '<', "Input file - default stdin"},
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{"inform", OPT_INFORM, 'F', "Input format - default PEM (DER or PEM)"},
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{"out", OPT_OUT, '>', "Output file - default stdout"},
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{"outform", OPT_OUTFORM, 'F', "Output format - default PEM"},
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OPT_SECTION("Output"),
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{"text", OPT_TEXT, '-', "Print the ec parameters in text form"},
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{"noout", OPT_NOOUT, '-', "Do not print the ec parameter"},
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{"param_enc", OPT_PARAM_ENC, 's',
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"Specifies the way the ec parameters are encoded"},
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OPT_SECTION("Parameter"),
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{"check", OPT_CHECK, '-', "Validate the ec parameters"},
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{"check_named", OPT_CHECK_NAMED, '-',
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"Check that named EC curve parameters have not been modified"},
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{"no_seed", OPT_NO_SEED, '-',
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"If 'explicit' parameters are chosen do not use the seed"},
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{"name", OPT_NAME, 's',
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"Use the ec parameters with specified 'short name'"},
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{"conv_form", OPT_CONV_FORM, 's', "Specifies the point conversion form "},
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OPT_R_OPTIONS,
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OPT_PROV_OPTIONS,
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{NULL}
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};
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static int list_builtin_curves(BIO *out)
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{
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int ret = 0;
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EC_builtin_curve *curves = NULL;
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size_t n, crv_len = EC_get_builtin_curves(NULL, 0);
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curves = app_malloc((int)sizeof(*curves) * crv_len, "list curves");
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if (!EC_get_builtin_curves(curves, crv_len))
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goto end;
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for (n = 0; n < crv_len; n++) {
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const char *comment = curves[n].comment;
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const char *sname = OBJ_nid2sn(curves[n].nid);
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if (comment == NULL)
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comment = "CURVE DESCRIPTION NOT AVAILABLE";
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if (sname == NULL)
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sname = "";
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BIO_printf(out, " %-10s: ", sname);
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BIO_printf(out, "%s\n", comment);
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}
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ret = 1;
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end:
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OPENSSL_free(curves);
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return ret;
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}
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int ecparam_main(int argc, char **argv)
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{
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EVP_PKEY_CTX *gctx_params = NULL, *gctx_key = NULL, *pctx = NULL;
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EVP_PKEY *params_key = NULL, *key = NULL;
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OSSL_ENCODER_CTX *ectx_key = NULL, *ectx_params = NULL;
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OSSL_DECODER_CTX *dctx_params = NULL;
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ENGINE *e = NULL;
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BIO *out = NULL;
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char *curve_name = NULL;
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char *asn1_encoding = NULL;
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char *point_format = NULL;
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char *infile = NULL, *outfile = NULL, *prog;
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OPTION_CHOICE o;
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int informat = FORMAT_PEM, outformat = FORMAT_PEM, noout = 0;
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int ret = 1, private = 0;
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int no_seed = 0, check = 0, check_named = 0, text = 0, genkey = 0;
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int list_curves = 0;
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prog = opt_init(argc, argv, ecparam_options);
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while ((o = opt_next()) != OPT_EOF) {
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switch (o) {
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case OPT_EOF:
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case OPT_ERR:
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opthelp:
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BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
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goto end;
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case OPT_HELP:
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opt_help(ecparam_options);
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ret = 0;
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goto end;
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case OPT_INFORM:
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if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &informat))
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goto opthelp;
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break;
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case OPT_IN:
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infile = opt_arg();
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break;
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case OPT_OUTFORM:
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if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &outformat))
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goto opthelp;
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break;
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case OPT_OUT:
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outfile = opt_arg();
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break;
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case OPT_TEXT:
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text = 1;
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break;
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case OPT_CHECK:
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check = 1;
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break;
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case OPT_CHECK_NAMED:
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check_named = 1;
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break;
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case OPT_LIST_CURVES:
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list_curves = 1;
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break;
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case OPT_NO_SEED:
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no_seed = 1;
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break;
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case OPT_NOOUT:
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noout = 1;
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break;
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case OPT_NAME:
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curve_name = opt_arg();
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break;
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case OPT_CONV_FORM:
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point_format = opt_arg();
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if (!opt_string(point_format, point_format_options))
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goto opthelp;
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break;
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case OPT_PARAM_ENC:
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asn1_encoding = opt_arg();
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if (!opt_string(asn1_encoding, asn1_encoding_options))
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goto opthelp;
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break;
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case OPT_GENKEY:
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genkey = 1;
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break;
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case OPT_R_CASES:
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if (!opt_rand(o))
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goto end;
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break;
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case OPT_PROV_CASES:
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if (!opt_provider(o))
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goto end;
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break;
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case OPT_ENGINE:
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e = setup_engine(opt_arg(), 0);
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break;
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}
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}
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/* No extra args. */
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if (!opt_check_rest_arg(NULL))
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goto opthelp;
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if (!app_RAND_load())
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goto end;
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private = genkey ? 1 : 0;
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out = bio_open_owner(outfile, outformat, private);
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if (out == NULL)
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goto end;
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if (list_curves) {
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if (list_builtin_curves(out))
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ret = 0;
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goto end;
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}
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if (curve_name != NULL) {
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OSSL_PARAM params[4];
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OSSL_PARAM *p = params;
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if (strcmp(curve_name, "secp192r1") == 0) {
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BIO_printf(bio_err,
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"using curve name prime192v1 instead of secp192r1\n");
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curve_name = SN_X9_62_prime192v1;
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} else if (strcmp(curve_name, "secp256r1") == 0) {
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BIO_printf(bio_err,
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"using curve name prime256v1 instead of secp256r1\n");
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curve_name = SN_X9_62_prime256v1;
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}
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*p++ = OSSL_PARAM_construct_utf8_string(OSSL_PKEY_PARAM_GROUP_NAME,
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curve_name, 0);
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if (asn1_encoding != NULL)
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*p++ = OSSL_PARAM_construct_utf8_string(OSSL_PKEY_PARAM_EC_ENCODING,
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asn1_encoding, 0);
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if (point_format != NULL)
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*p++ = OSSL_PARAM_construct_utf8_string(
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OSSL_PKEY_PARAM_EC_POINT_CONVERSION_FORMAT,
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point_format, 0);
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*p = OSSL_PARAM_construct_end();
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if (OPENSSL_strcasecmp(curve_name, "SM2") == 0)
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gctx_params = EVP_PKEY_CTX_new_from_name(app_get0_libctx(), "sm2",
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app_get0_propq());
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else
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gctx_params = EVP_PKEY_CTX_new_from_name(app_get0_libctx(), "ec",
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app_get0_propq());
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if (gctx_params == NULL
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|| EVP_PKEY_keygen_init(gctx_params) <= 0
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|| EVP_PKEY_CTX_set_params(gctx_params, params) <= 0
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|| EVP_PKEY_keygen(gctx_params, ¶ms_key) <= 0) {
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BIO_printf(bio_err, "unable to generate key\n");
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goto end;
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}
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} else {
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params_key = load_keyparams_suppress(infile, informat, 1, "EC",
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"EC parameters", 1);
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if (params_key == NULL)
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params_key = load_keyparams_suppress(infile, informat, 1, "SM2",
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"SM2 parameters", 1);
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if (params_key == NULL) {
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BIO_printf(bio_err, "Unable to load parameters from %s\n", infile);
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goto end;
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}
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if (point_format
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&& !EVP_PKEY_set_utf8_string_param(
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params_key, OSSL_PKEY_PARAM_EC_POINT_CONVERSION_FORMAT,
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point_format)) {
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BIO_printf(bio_err, "unable to set point conversion format\n");
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goto end;
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}
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if (asn1_encoding != NULL
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&& !EVP_PKEY_set_utf8_string_param(
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params_key, OSSL_PKEY_PARAM_EC_ENCODING, asn1_encoding)) {
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BIO_printf(bio_err, "unable to set asn1 encoding format\n");
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goto end;
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}
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}
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if (no_seed
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&& !EVP_PKEY_set_octet_string_param(params_key, OSSL_PKEY_PARAM_EC_SEED,
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NULL, 0)) {
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BIO_printf(bio_err, "unable to clear seed\n");
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goto end;
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}
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if (text
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&& !EVP_PKEY_print_params(out, params_key, 0, NULL)) {
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BIO_printf(bio_err, "unable to print params\n");
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goto end;
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}
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if (check || check_named) {
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BIO_printf(bio_err, "checking elliptic curve parameters: ");
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if (check_named
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&& !EVP_PKEY_set_utf8_string_param(params_key,
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OSSL_PKEY_PARAM_EC_GROUP_CHECK_TYPE,
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OSSL_PKEY_EC_GROUP_CHECK_NAMED)) {
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BIO_printf(bio_err, "unable to set check_type\n");
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goto end;
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}
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pctx = EVP_PKEY_CTX_new_from_pkey(app_get0_libctx(), params_key,
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app_get0_propq());
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if (pctx == NULL || EVP_PKEY_param_check(pctx) <= 0) {
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BIO_printf(bio_err, "failed\n");
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goto end;
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}
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BIO_printf(bio_err, "ok\n");
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}
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if (outformat == FORMAT_ASN1 && genkey)
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noout = 1;
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if (!noout) {
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ectx_params = OSSL_ENCODER_CTX_new_for_pkey(
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params_key, OSSL_KEYMGMT_SELECT_DOMAIN_PARAMETERS,
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outformat == FORMAT_ASN1 ? "DER" : "PEM", NULL, NULL);
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if (!OSSL_ENCODER_to_bio(ectx_params, out)) {
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BIO_printf(bio_err, "unable to write elliptic curve parameters\n");
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goto end;
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}
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}
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if (genkey) {
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/*
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* NOTE: EC keygen does not normally need to pass in the param_key
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* for named curves. This can be achieved using:
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* gctx = EVP_PKEY_CTX_new_from_name(NULL, "EC", NULL);
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* EVP_PKEY_keygen_init(gctx);
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* EVP_PKEY_CTX_set_group_name(gctx, curvename);
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* EVP_PKEY_keygen(gctx, &key) <= 0)
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*/
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gctx_key = EVP_PKEY_CTX_new_from_pkey(app_get0_libctx(), params_key,
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app_get0_propq());
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if (EVP_PKEY_keygen_init(gctx_key) <= 0
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|| EVP_PKEY_keygen(gctx_key, &key) <= 0) {
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BIO_printf(bio_err, "unable to generate key\n");
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goto end;
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}
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assert(private);
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ectx_key = OSSL_ENCODER_CTX_new_for_pkey(
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key, OSSL_KEYMGMT_SELECT_ALL,
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outformat == FORMAT_ASN1 ? "DER" : "PEM", NULL, NULL);
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if (!OSSL_ENCODER_to_bio(ectx_key, out)) {
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BIO_printf(bio_err, "unable to write elliptic "
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"curve parameters\n");
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goto end;
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}
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}
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ret = 0;
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end:
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if (ret != 0)
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ERR_print_errors(bio_err);
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release_engine(e);
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EVP_PKEY_free(params_key);
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EVP_PKEY_free(key);
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EVP_PKEY_CTX_free(pctx);
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EVP_PKEY_CTX_free(gctx_params);
|
||
|
|
EVP_PKEY_CTX_free(gctx_key);
|
||
|
|
OSSL_DECODER_CTX_free(dctx_params);
|
||
|
|
OSSL_ENCODER_CTX_free(ectx_params);
|
||
|
|
OSSL_ENCODER_CTX_free(ectx_key);
|
||
|
|
BIO_free_all(out);
|
||
|
|
return ret;
|
||
|
|
}
|