apps/ec.c - third_party/openssl - Git at Google

 /*
  * Copyright 2002-2021 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;
 }
	/*
	* Copyright 2002-2021 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;
	}