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92fee4213b
openssl/apps/pkey.c
Pauli 92fee4213b pkey: additional EC related options 
Add options to change the parameter encoding and point conversions for EC
public and private keys.  These options are present in the deprecated 'ec'
utility.

Reviewed-by: Dmitry Belyavskiy <beldmit@gmail.com>
(Merged from https://github.com/openssl/openssl/pull/11113)
2020-02-21 22:55:13 +10:00

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9.1 KiB
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/*
* Copyright 2006-2018 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 <stdio.h>
#include <string.h>
#include "apps.h"
#include "progs.h"
#include <openssl/pem.h>
#include <openssl/err.h>
#include <openssl/evp.h>
#ifndef OPENSSL_NO_EC
# include <openssl/ec.h>
static OPT_PAIR ec_conv_forms[] = {
{"compressed", POINT_CONVERSION_COMPRESSED},
{"uncompressed", POINT_CONVERSION_UNCOMPRESSED},
{"hybrid", POINT_CONVERSION_HYBRID},
{NULL}
};
static OPT_PAIR ec_param_enc[] = {
{"named_curve", OPENSSL_EC_NAMED_CURVE},
{"explicit", 0},
{NULL}
};
#endif
typedef enum OPTION_choice {
OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
OPT_INFORM, OPT_OUTFORM, OPT_PASSIN, OPT_PASSOUT, OPT_ENGINE,
OPT_IN, OPT_OUT, OPT_PUBIN, OPT_PUBOUT, OPT_TEXT_PUB,
OPT_TEXT, OPT_NOOUT, OPT_MD, OPT_TRADITIONAL, OPT_CHECK, OPT_PUB_CHECK,
OPT_EC_PARAM_ENC, OPT_EC_CONV_FORM
} OPTION_CHOICE;
const OPTIONS pkey_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
{"check", OPT_CHECK, '-', "Check key consistency"},
{"pubcheck", OPT_PUB_CHECK, '-', "Check public key consistency"},
{"", OPT_MD, '-', "Any supported cipher"},
{"ec_param_enc", OPT_EC_PARAM_ENC, 's',
"Specifies the way the ec parameters are encoded"},
{"ec_conv_form", OPT_EC_CONV_FORM, 's',
"Specifies the point conversion form "},
OPT_SECTION("Input"),
{"in", OPT_IN, 's', "Input key"},
{"inform", OPT_INFORM, 'f', "Input format (DER or PEM)"},
{"passin", OPT_PASSIN, 's', "Input file pass phrase source"},
{"pubin", OPT_PUBIN, '-',
"Read public key from input (default is private key)"},
{"traditional", OPT_TRADITIONAL, '-',
"Use traditional format for private keys"},
OPT_SECTION("Output"),
{"outform", OPT_OUTFORM, 'F', "Output format (DER or PEM)"},
{"passout", OPT_PASSOUT, 's', "Output file pass phrase source"},
{"out", OPT_OUT, '>', "Output file"},
{"pubout", OPT_PUBOUT, '-', "Output public key, not private"},
{"text_pub", OPT_TEXT_PUB, '-', "Only output public key components"},
{"text", OPT_TEXT, '-', "Output in plaintext as well"},
{"noout", OPT_NOOUT, '-', "Don't output the key"},
{NULL}
};
int pkey_main(int argc, char **argv)
{
BIO *in = NULL, *out = NULL;
ENGINE *e = NULL;
EVP_PKEY *pkey = NULL;
const EVP_CIPHER *cipher = NULL;
char *infile = NULL, *outfile = NULL, *passin = NULL, *passout = NULL;
char *passinarg = NULL, *passoutarg = NULL, *prog;
OPTION_CHOICE o;
int informat = FORMAT_PEM, outformat = FORMAT_PEM;
int pubin = 0, pubout = 0, pubtext = 0, text = 0, noout = 0, ret = 1;
int private = 0, traditional = 0, check = 0, pub_check = 0;
#ifndef OPENSSL_NO_EC
EC_KEY *eckey;
int ec_asn1_flag = OPENSSL_EC_NAMED_CURVE, new_ec_asn1_flag = 0;
int i, new_ec_form = 0;
point_conversion_form_t ec_form = POINT_CONVERSION_UNCOMPRESSED;
#endif
prog = opt_init(argc, argv, pkey_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(pkey_options);
ret = 0;
goto end;
case OPT_INFORM:
if (!opt_format(opt_arg(), OPT_FMT_ANY, &informat))
goto opthelp;
break;
case OPT_OUTFORM:
if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &outformat))
goto opthelp;
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_IN:
infile = opt_arg();
break;
case OPT_OUT:
outfile = opt_arg();
break;
case OPT_PUBIN:
pubin = pubout = pubtext = 1;
break;
case OPT_PUBOUT:
pubout = 1;
break;
case OPT_TEXT_PUB:
pubtext = text = 1;
break;
case OPT_TEXT:
text = 1;
break;
case OPT_NOOUT:
noout = 1;
break;
case OPT_TRADITIONAL:
traditional = 1;
break;
case OPT_CHECK:
check = 1;
break;
case OPT_PUB_CHECK:
pub_check = 1;
break;
case OPT_MD:
if (!opt_cipher(opt_unknown(), &cipher))
goto opthelp;
break;
case OPT_EC_CONV_FORM:
#ifdef OPENSSL_NO_EC
goto opthelp;
#else
if (!opt_pair(opt_arg(), ec_conv_forms, &i))
goto opthelp;
new_ec_form = 1;
ec_form = i;
break;
#endif
case OPT_EC_PARAM_ENC:
#ifdef OPENSSL_NO_EC
goto opthelp;
#else
if (!opt_pair(opt_arg(), ec_param_enc, &i))
goto opthelp;
new_ec_asn1_flag = 1;
ec_asn1_flag = i;
break;
#endif
}
}
argc = opt_num_rest();
if (argc != 0)
goto opthelp;
private = !noout && !pubout ? 1 : 0;
if (text && !pubtext)
private = 1;
if (!app_passwd(passinarg, passoutarg, &passin, &passout)) {
BIO_printf(bio_err, "Error getting passwords\n");
goto end;
}
out = bio_open_owner(outfile, outformat, private);
if (out == NULL)
goto end;
if (pubin)
pkey = load_pubkey(infile, informat, 1, passin, e, "Public Key");
else
pkey = load_key(infile, informat, 1, passin, e, "key");
if (pkey == NULL)
goto end;
#ifndef OPENSSL_NO_EC
/*
* TODO: remove this and use a set params call with a 'pkeyopt' command
* line option instead.
*/
if (new_ec_form || new_ec_asn1_flag) {
if ((eckey = EVP_PKEY_get0_EC_KEY(pkey)) == NULL) {
ERR_print_errors(bio_err);
goto end;
}
if (new_ec_form)
EC_KEY_set_conv_form(eckey, ec_form);
if (new_ec_asn1_flag)
EC_KEY_set_asn1_flag(eckey, ec_asn1_flag);
}
#endif
if (check || pub_check) {
int r;
EVP_PKEY_CTX *ctx;
ctx = EVP_PKEY_CTX_new(pkey, e);
if (ctx == NULL) {
ERR_print_errors(bio_err);
goto end;
}
if (check)
r = EVP_PKEY_check(ctx);
else
r = EVP_PKEY_public_check(ctx);
if (r == 1) {
BIO_printf(out, "Key is valid\n");
} else {
/*
* Note: at least for RSA keys if this function returns
* -1, there will be no error reasons.
*/
unsigned long err;
BIO_printf(out, "Key is invalid\n");
while ((err = ERR_peek_error()) != 0) {
BIO_printf(out, "Detailed error: %s\n",
ERR_reason_error_string(err));
ERR_get_error(); /* remove err from error stack */
}
}
EVP_PKEY_CTX_free(ctx);
}
if (!noout) {
if (outformat == FORMAT_PEM) {
if (pubout) {
if (!PEM_write_bio_PUBKEY(out, pkey))
goto end;
} else {
assert(private);
if (traditional) {
if (!PEM_write_bio_PrivateKey_traditional(out, pkey, cipher,
NULL, 0, NULL,
passout))
goto end;
} else {
if (!PEM_write_bio_PrivateKey(out, pkey, cipher,
NULL, 0, NULL, passout))
goto end;
}
}
} else if (outformat == FORMAT_ASN1) {
if (pubout) {
if (!i2d_PUBKEY_bio(out, pkey))
goto end;
} else {
assert(private);
if (!i2d_PrivateKey_bio(out, pkey))
goto end;
}
} else {
BIO_printf(bio_err, "Bad format specified for key\n");
goto end;
}
}
if (text) {
if (pubtext) {
if (EVP_PKEY_print_public(out, pkey, 0, NULL) <= 0)
goto end;
} else {
assert(private);
if (EVP_PKEY_print_private(out, pkey, 0, NULL) <= 0)
goto end;
}
}
ret = 0;
end:
if (ret != 0)
ERR_print_errors(bio_err);
EVP_PKEY_free(pkey);
release_engine(e);
BIO_free_all(out);
BIO_free(in);
OPENSSL_free(passin);
OPENSSL_free(passout);
return ret;
}
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