| /* |
| * Copyright 2002-2022 The OpenSSL Project Authors. 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 <string.h> |
| #include <openssl/opensslconf.h> |
| #include <openssl/evp.h> |
| #include <openssl/encoder.h> |
| #include <openssl/decoder.h> |
| #include <openssl/core_names.h> |
| #include <openssl/core_dispatch.h> |
| #include <openssl/params.h> |
| #include <openssl/err.h> |
| |
| #include "apps.h" |
| #include "progs.h" |
| #include "ec_common.h" |
| |
| typedef enum OPTION_choice { |
| OPT_COMMON, |
| OPT_INFORM, OPT_OUTFORM, OPT_ENGINE, OPT_IN, OPT_OUT, |
| OPT_NOOUT, OPT_TEXT, OPT_PARAM_OUT, OPT_PUBIN, OPT_PUBOUT, |
| OPT_PASSIN, OPT_PASSOUT, OPT_PARAM_ENC, OPT_CONV_FORM, OPT_CIPHER, |
| OPT_NO_PUBLIC, OPT_CHECK, OPT_PROV_ENUM |
| } OPTION_CHOICE; |
| |
| const OPTIONS ec_options[] = { |
| OPT_SECTION("General"), |
| {"help", OPT_HELP, '-', "Display this summary"}, |
| #ifndef OPENSSL_NO_ENGINE |
| {"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"}, |
| #endif |
| |
| OPT_SECTION("Input"), |
| {"in", OPT_IN, 's', "Input file"}, |
| {"inform", OPT_INFORM, 'f', "Input format (DER/PEM/P12/ENGINE)"}, |
| {"pubin", OPT_PUBIN, '-', "Expect a public key in input file"}, |
| {"passin", OPT_PASSIN, 's', "Input file pass phrase source"}, |
| {"check", OPT_CHECK, '-', "check key consistency"}, |
| {"", OPT_CIPHER, '-', "Any supported cipher"}, |
| {"param_enc", OPT_PARAM_ENC, 's', |
| "Specifies the way the ec parameters are encoded"}, |
| {"conv_form", OPT_CONV_FORM, 's', "Specifies the point conversion form "}, |
| |
| OPT_SECTION("Output"), |
| {"out", OPT_OUT, '>', "Output file"}, |
| {"outform", OPT_OUTFORM, 'F', "Output format - DER or PEM"}, |
| {"noout", OPT_NOOUT, '-', "Don't print key out"}, |
| {"text", OPT_TEXT, '-', "Print the key"}, |
| {"param_out", OPT_PARAM_OUT, '-', "Print the elliptic curve parameters"}, |
| {"pubout", OPT_PUBOUT, '-', "Output public key, not private"}, |
| {"no_public", OPT_NO_PUBLIC, '-', "exclude public key from private key"}, |
| {"passout", OPT_PASSOUT, 's', "Output file pass phrase source"}, |
| |
| OPT_PROV_OPTIONS, |
| {NULL} |
| }; |
| |
| int ec_main(int argc, char **argv) |
| { |
| OSSL_ENCODER_CTX *ectx = NULL; |
| OSSL_DECODER_CTX *dctx = NULL; |
| EVP_PKEY_CTX *pctx = NULL; |
| EVP_PKEY *eckey = NULL; |
| BIO *out = NULL; |
| ENGINE *e = NULL; |
| EVP_CIPHER *enc = NULL; |
| char *infile = NULL, *outfile = NULL, *ciphername = NULL, *prog; |
| char *passin = NULL, *passout = NULL, *passinarg = NULL, *passoutarg = NULL; |
| OPTION_CHOICE o; |
| int informat = FORMAT_UNDEF, outformat = FORMAT_PEM, text = 0, noout = 0; |
| int pubin = 0, pubout = 0, param_out = 0, ret = 1, private = 0; |
| int check = 0; |
| char *asn1_encoding = NULL; |
| char *point_format = NULL; |
| int no_public = 0; |
| |
| opt_set_unknown_name("cipher"); |
| prog = opt_init(argc, argv, ec_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(ec_options); |
| ret = 0; |
| goto end; |
| case OPT_INFORM: |
| if (!opt_format(opt_arg(), OPT_FMT_ANY, &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_NOOUT: |
| noout = 1; |
| break; |
| case OPT_TEXT: |
| text = 1; |
| break; |
| case OPT_PARAM_OUT: |
| param_out = 1; |
| break; |
| case OPT_PUBIN: |
| pubin = 1; |
| break; |
| case OPT_PUBOUT: |
| pubout = 1; |
| break; |
| case OPT_PASSIN: |
| passinarg = opt_arg(); |
| break; |
| case OPT_PASSOUT: |
| passoutarg = opt_arg(); |
| break; |
| case OPT_ENGINE: |
| e = setup_engine(opt_arg(), 0); |
| break; |
| case OPT_CIPHER: |
| ciphername = opt_unknown(); |
| break; |
| case OPT_CONV_FORM: |
| point_format = opt_arg(); |
| if (!opt_string(point_format, point_format_options)) |
| goto opthelp; |
| break; |
| case OPT_PARAM_ENC: |
| asn1_encoding = opt_arg(); |
| if (!opt_string(asn1_encoding, asn1_encoding_options)) |
| goto opthelp; |
| break; |
| case OPT_NO_PUBLIC: |
| no_public = 1; |
| break; |
| case OPT_CHECK: |
| check = 1; |
| break; |
| case OPT_PROV_CASES: |
| if (!opt_provider(o)) |
| goto end; |
| break; |
| } |
| } |
| |
| /* No extra arguments. */ |
| if (!opt_check_rest_arg(NULL)) |
| goto opthelp; |
| |
| if (!opt_cipher(ciphername, &enc)) |
| goto opthelp; |
| private = param_out || pubin || pubout ? 0 : 1; |
| if (text && !pubin) |
| private = 1; |
| |
| if (!app_passwd(passinarg, passoutarg, &passin, &passout)) { |
| BIO_printf(bio_err, "Error getting passwords\n"); |
| goto end; |
| } |
| |
| BIO_printf(bio_err, "read EC key\n"); |
| |
| if (pubin) |
| eckey = load_pubkey(infile, informat, 1, passin, e, "public key"); |
| else |
| eckey = load_key(infile, informat, 1, passin, e, "private key"); |
| |
| if (eckey == NULL) { |
| BIO_printf(bio_err, "unable to load Key\n"); |
| goto end; |
| } |
| |
| out = bio_open_owner(outfile, outformat, private); |
| if (out == NULL) |
| goto end; |
| |
| if (point_format |
| && !EVP_PKEY_set_utf8_string_param( |
| eckey, OSSL_PKEY_PARAM_EC_POINT_CONVERSION_FORMAT, |
| point_format)) { |
| BIO_printf(bio_err, "unable to set point conversion format\n"); |
| goto end; |
| } |
| |
| if (asn1_encoding != NULL |
| && !EVP_PKEY_set_utf8_string_param( |
| eckey, OSSL_PKEY_PARAM_EC_ENCODING, asn1_encoding)) { |
| BIO_printf(bio_err, "unable to set asn1 encoding format\n"); |
| goto end; |
| } |
| |
| if (no_public) { |
| if (!EVP_PKEY_set_int_param(eckey, OSSL_PKEY_PARAM_EC_INCLUDE_PUBLIC, 0)) { |
| BIO_printf(bio_err, "unable to disable public key encoding\n"); |
| goto end; |
| } |
| } else { |
| if (!EVP_PKEY_set_int_param(eckey, OSSL_PKEY_PARAM_EC_INCLUDE_PUBLIC, 1)) { |
| BIO_printf(bio_err, "unable to enable public key encoding\n"); |
| goto end; |
| } |
| } |
| |
| if (text) { |
| assert(pubin || private); |
| if ((pubin && EVP_PKEY_print_public(out, eckey, 0, NULL) <= 0) |
| || (!pubin && EVP_PKEY_print_private(out, eckey, 0, NULL) <= 0)) { |
| BIO_printf(bio_err, "unable to print EC key\n"); |
| goto end; |
| } |
| } |
| |
| if (check) { |
| pctx = EVP_PKEY_CTX_new_from_pkey(NULL, eckey, NULL); |
| if (pctx == NULL) { |
| BIO_printf(bio_err, "unable to check EC key\n"); |
| goto end; |
| } |
| if (!EVP_PKEY_check(pctx)) |
| BIO_printf(bio_err, "EC Key Invalid!\n"); |
| else |
| BIO_printf(bio_err, "EC Key valid.\n"); |
| ERR_print_errors(bio_err); |
| } |
| |
| if (!noout) { |
| int selection; |
| const char *output_type = outformat == FORMAT_ASN1 ? "DER" : "PEM"; |
| const char *output_structure = "type-specific"; |
| |
| BIO_printf(bio_err, "writing EC key\n"); |
| if (param_out) { |
| selection = OSSL_KEYMGMT_SELECT_DOMAIN_PARAMETERS; |
| } else if (pubin || pubout) { |
| selection = OSSL_KEYMGMT_SELECT_DOMAIN_PARAMETERS |
| | OSSL_KEYMGMT_SELECT_PUBLIC_KEY; |
| output_structure = "SubjectPublicKeyInfo"; |
| } else { |
| selection = OSSL_KEYMGMT_SELECT_ALL; |
| assert(private); |
| } |
| |
| ectx = OSSL_ENCODER_CTX_new_for_pkey(eckey, selection, |
| output_type, output_structure, |
| NULL); |
| if (enc != NULL) { |
| OSSL_ENCODER_CTX_set_cipher(ectx, EVP_CIPHER_get0_name(enc), NULL); |
| /* Default passphrase prompter */ |
| OSSL_ENCODER_CTX_set_passphrase_ui(ectx, get_ui_method(), NULL); |
| if (passout != NULL) |
| /* When passout given, override the passphrase prompter */ |
| OSSL_ENCODER_CTX_set_passphrase(ectx, |
| (const unsigned char *)passout, |
| strlen(passout)); |
| } |
| if (!OSSL_ENCODER_to_bio(ectx, out)) { |
| BIO_printf(bio_err, "unable to write EC key\n"); |
| goto end; |
| } |
| } |
| |
| ret = 0; |
| end: |
| if (ret != 0) |
| ERR_print_errors(bio_err); |
| BIO_free_all(out); |
| EVP_PKEY_free(eckey); |
| EVP_CIPHER_free(enc); |
| OSSL_ENCODER_CTX_free(ectx); |
| OSSL_DECODER_CTX_free(dctx); |
| EVP_PKEY_CTX_free(pctx); |
| release_engine(e); |
| if (passin != NULL) |
| OPENSSL_clear_free(passin, strlen(passin)); |
| if (passout != NULL) |
| OPENSSL_clear_free(passout, strlen(passout)); |
| return ret; |
| } |