291 lines
9.2 KiB
C
291 lines
9.2 KiB
C
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/*
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* Copyright 2002-2023 The OpenSSL Project Authors. 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_ENGINE, OPT_IN, OPT_OUT,
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OPT_NOOUT, OPT_TEXT, OPT_PARAM_OUT, OPT_PUBIN, OPT_PUBOUT,
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OPT_PASSIN, OPT_PASSOUT, OPT_PARAM_ENC, OPT_CONV_FORM, OPT_CIPHER,
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OPT_NO_PUBLIC, OPT_CHECK, OPT_PROV_ENUM
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} OPTION_CHOICE;
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const OPTIONS ec_options[] = {
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OPT_SECTION("General"),
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{"help", OPT_HELP, '-', "Display this summary"},
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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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OPT_SECTION("Input"),
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{"in", OPT_IN, 's', "Input file"},
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{"inform", OPT_INFORM, 'f', "Input format (DER/PEM/P12/ENGINE)"},
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{"pubin", OPT_PUBIN, '-', "Expect a public key in input file"},
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{"passin", OPT_PASSIN, 's', "Input file pass phrase source"},
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{"check", OPT_CHECK, '-', "check key consistency"},
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{"", OPT_CIPHER, '-', "Any supported cipher"},
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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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{"conv_form", OPT_CONV_FORM, 's', "Specifies the point conversion form "},
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OPT_SECTION("Output"),
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{"out", OPT_OUT, '>', "Output file"},
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{"outform", OPT_OUTFORM, 'F', "Output format - DER or PEM"},
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{"noout", OPT_NOOUT, '-', "Don't print key out"},
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{"text", OPT_TEXT, '-', "Print the key"},
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{"param_out", OPT_PARAM_OUT, '-', "Print the elliptic curve parameters"},
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{"pubout", OPT_PUBOUT, '-', "Output public key, not private"},
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{"no_public", OPT_NO_PUBLIC, '-', "exclude public key from private key"},
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{"passout", OPT_PASSOUT, 's', "Output file pass phrase source"},
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OPT_PROV_OPTIONS,
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{NULL}
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};
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int ec_main(int argc, char **argv)
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{
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OSSL_ENCODER_CTX *ectx = NULL;
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OSSL_DECODER_CTX *dctx = NULL;
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EVP_PKEY_CTX *pctx = NULL;
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EVP_PKEY *eckey = NULL;
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BIO *out = NULL;
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ENGINE *e = NULL;
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EVP_CIPHER *enc = NULL;
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char *infile = NULL, *outfile = NULL, *ciphername = NULL, *prog;
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char *passin = NULL, *passout = NULL, *passinarg = NULL, *passoutarg = NULL;
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OPTION_CHOICE o;
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int informat = FORMAT_UNDEF, outformat = FORMAT_PEM, text = 0, noout = 0;
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int pubin = 0, pubout = 0, param_out = 0, ret = 1, private = 0;
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int check = 0;
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char *asn1_encoding = NULL;
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char *point_format = NULL;
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int no_public = 0;
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opt_set_unknown_name("cipher");
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prog = opt_init(argc, argv, ec_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(ec_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_ANY, &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_NOOUT:
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noout = 1;
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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_PARAM_OUT:
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param_out = 1;
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break;
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case OPT_PUBIN:
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pubin = 1;
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break;
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case OPT_PUBOUT:
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pubout = 1;
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break;
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case OPT_PASSIN:
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passinarg = opt_arg();
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break;
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case OPT_PASSOUT:
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passoutarg = opt_arg();
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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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case OPT_CIPHER:
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ciphername = opt_unknown();
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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_NO_PUBLIC:
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no_public = 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_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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}
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}
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/* No extra arguments. */
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if (!opt_check_rest_arg(NULL))
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goto opthelp;
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if (!opt_cipher(ciphername, &enc))
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goto opthelp;
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private = !pubin && (text || (!param_out && !pubout));
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if (!app_passwd(passinarg, passoutarg, &passin, &passout)) {
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BIO_printf(bio_err, "Error getting passwords\n");
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goto end;
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}
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BIO_printf(bio_err, "read EC key\n");
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if (pubin)
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eckey = load_pubkey(infile, informat, 1, passin, e, "public key");
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else
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eckey = load_key(infile, informat, 1, passin, e, "private key");
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if (eckey == NULL) {
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BIO_printf(bio_err, "unable to load Key\n");
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goto end;
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}
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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 (point_format
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&& !EVP_PKEY_set_utf8_string_param(
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eckey, 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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eckey, 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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if (no_public) {
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if (!EVP_PKEY_set_int_param(eckey, OSSL_PKEY_PARAM_EC_INCLUDE_PUBLIC, 0)) {
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BIO_printf(bio_err, "unable to disable public key encoding\n");
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goto end;
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}
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} else {
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if (!EVP_PKEY_set_int_param(eckey, OSSL_PKEY_PARAM_EC_INCLUDE_PUBLIC, 1)) {
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BIO_printf(bio_err, "unable to enable public key encoding\n");
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goto end;
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}
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}
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if (text) {
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assert(pubin || private);
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if ((pubin && EVP_PKEY_print_public(out, eckey, 0, NULL) <= 0)
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|| (!pubin && EVP_PKEY_print_private(out, eckey, 0, NULL) <= 0)) {
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BIO_printf(bio_err, "unable to print EC key\n");
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goto end;
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}
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}
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if (check) {
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pctx = EVP_PKEY_CTX_new_from_pkey(NULL, eckey, NULL);
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if (pctx == NULL) {
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BIO_printf(bio_err, "unable to check EC key\n");
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goto end;
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}
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if (EVP_PKEY_check(pctx) <= 0)
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BIO_printf(bio_err, "EC Key Invalid!\n");
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else
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BIO_printf(bio_err, "EC Key valid.\n");
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ERR_print_errors(bio_err);
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}
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if (!noout) {
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int selection;
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const char *output_type = outformat == FORMAT_ASN1 ? "DER" : "PEM";
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const char *output_structure = "type-specific";
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BIO_printf(bio_err, "writing EC key\n");
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if (param_out) {
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selection = OSSL_KEYMGMT_SELECT_DOMAIN_PARAMETERS;
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} else if (pubin || pubout) {
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selection = OSSL_KEYMGMT_SELECT_DOMAIN_PARAMETERS
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| OSSL_KEYMGMT_SELECT_PUBLIC_KEY;
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output_structure = "SubjectPublicKeyInfo";
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} else {
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selection = OSSL_KEYMGMT_SELECT_ALL;
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assert(private);
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}
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ectx = OSSL_ENCODER_CTX_new_for_pkey(eckey, selection,
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output_type, output_structure,
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NULL);
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if (enc != NULL) {
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OSSL_ENCODER_CTX_set_cipher(ectx, EVP_CIPHER_get0_name(enc), NULL);
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/* Default passphrase prompter */
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OSSL_ENCODER_CTX_set_passphrase_ui(ectx, get_ui_method(), NULL);
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if (passout != NULL)
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/* When passout given, override the passphrase prompter */
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OSSL_ENCODER_CTX_set_passphrase(ectx,
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(const unsigned char *)passout,
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strlen(passout));
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}
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if (!OSSL_ENCODER_to_bio(ectx, out)) {
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BIO_printf(bio_err, "unable to write EC key\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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BIO_free_all(out);
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EVP_PKEY_free(eckey);
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EVP_CIPHER_free(enc);
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OSSL_ENCODER_CTX_free(ectx);
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OSSL_DECODER_CTX_free(dctx);
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EVP_PKEY_CTX_free(pctx);
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release_engine(e);
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if (passin != NULL)
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OPENSSL_clear_free(passin, strlen(passin));
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if (passout != NULL)
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OPENSSL_clear_free(passout, strlen(passout));
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return ret;
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}
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