412 lines
10 KiB
C
412 lines
10 KiB
C
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/* $OpenBSD: rsa.c,v 1.18 2023/03/06 14:32:06 tb Exp $ */
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/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
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* All rights reserved.
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*
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* This package is an SSL implementation written
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* by Eric Young (eay@cryptsoft.com).
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* The implementation was written so as to conform with Netscapes SSL.
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*
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* This library is free for commercial and non-commercial use as long as
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* the following conditions are aheared to. The following conditions
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* apply to all code found in this distribution, be it the RC4, RSA,
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* lhash, DES, etc., code; not just the SSL code. The SSL documentation
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* included with this distribution is covered by the same copyright terms
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* except that the holder is Tim Hudson (tjh@cryptsoft.com).
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*
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* Copyright remains Eric Young's, and as such any Copyright notices in
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* the code are not to be removed.
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* If this package is used in a product, Eric Young should be given attribution
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* as the author of the parts of the library used.
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* This can be in the form of a textual message at program startup or
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* in documentation (online or textual) provided with the package.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* "This product includes cryptographic software written by
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* Eric Young (eay@cryptsoft.com)"
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* The word 'cryptographic' can be left out if the rouines from the library
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* being used are not cryptographic related :-).
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* 4. If you include any Windows specific code (or a derivative thereof) from
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* the apps directory (application code) you must include an acknowledgement:
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* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
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*
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* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* The licence and distribution terms for any publically available version or
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* derivative of this code cannot be changed. i.e. this code cannot simply be
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* copied and put under another distribution licence
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* [including the GNU Public Licence.]
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*/
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#include <openssl/opensslconf.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <time.h>
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#include "apps.h"
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#include "progs.h"
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#include <openssl/bio.h>
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#include <openssl/bn.h>
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#include <openssl/err.h>
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#include <openssl/evp.h>
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#include <openssl/pem.h>
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#include <openssl/rsa.h>
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#include <openssl/x509.h>
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static struct {
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int check;
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const EVP_CIPHER *enc;
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char *infile;
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int informat;
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int modulus;
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int noout;
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char *outfile;
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int outformat;
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char *passargin;
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char *passargout;
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int pubin;
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int pubout;
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int pvk_encr;
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int text;
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} cfg;
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static int
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rsa_opt_cipher(int argc, char **argv, int *argsused)
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{
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char *name = argv[0];
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if (*name++ != '-')
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return (1);
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if ((cfg.enc = EVP_get_cipherbyname(name)) == NULL) {
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fprintf(stderr, "Invalid cipher '%s'\n", name);
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return (1);
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}
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*argsused = 1;
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return (0);
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}
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static const struct option rsa_options[] = {
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{
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.name = "check",
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.desc = "Check consistency of RSA private key",
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.type = OPTION_FLAG,
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.opt.flag = &cfg.check,
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},
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{
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.name = "in",
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.argname = "file",
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.desc = "Input file (default stdin)",
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.type = OPTION_ARG,
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.opt.arg = &cfg.infile,
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},
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{
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.name = "inform",
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.argname = "format",
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.desc = "Input format (DER, NET or PEM (default))",
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.type = OPTION_ARG_FORMAT,
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.opt.value = &cfg.informat,
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},
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{
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.name = "modulus",
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.desc = "Print the RSA key modulus",
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.type = OPTION_FLAG,
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.opt.flag = &cfg.modulus,
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},
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{
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.name = "noout",
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.desc = "Do not print encoded version of the key",
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.type = OPTION_FLAG,
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.opt.flag = &cfg.noout,
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},
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{
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.name = "out",
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.argname = "file",
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.desc = "Output file (default stdout)",
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.type = OPTION_ARG,
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.opt.arg = &cfg.outfile,
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},
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{
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.name = "outform",
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.argname = "format",
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.desc = "Output format (DER, NET or PEM (default PEM))",
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.type = OPTION_ARG_FORMAT,
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.opt.value = &cfg.outformat,
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},
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{
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.name = "passin",
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.argname = "src",
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.desc = "Input file passphrase source",
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.type = OPTION_ARG,
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.opt.arg = &cfg.passargin,
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},
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{
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.name = "passout",
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.argname = "src",
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.desc = "Output file passphrase source",
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.type = OPTION_ARG,
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.opt.arg = &cfg.passargout,
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},
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{
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.name = "pubin",
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.desc = "Expect a public key (default private key)",
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.type = OPTION_VALUE,
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.value = 1,
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.opt.value = &cfg.pubin,
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},
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{
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.name = "pubout",
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.desc = "Output a public key (default private key)",
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.type = OPTION_VALUE,
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.value = 1,
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.opt.value = &cfg.pubout,
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},
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{
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.name = "pvk-none",
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.type = OPTION_VALUE,
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.value = 0,
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.opt.value = &cfg.pvk_encr,
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},
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{
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.name = "pvk-strong",
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.type = OPTION_VALUE,
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.value = 2,
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.opt.value = &cfg.pvk_encr,
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},
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{
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.name = "pvk-weak",
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.type = OPTION_VALUE,
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.value = 1,
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.opt.value = &cfg.pvk_encr,
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},
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{
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.name = "RSAPublicKey_in",
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.type = OPTION_VALUE,
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.value = 2,
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.opt.value = &cfg.pubin,
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},
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{
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.name = "RSAPublicKey_out",
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.type = OPTION_VALUE,
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.value = 2,
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.opt.value = &cfg.pubout,
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},
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{
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.name = "text",
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.desc = "Print in plain text in addition to encoded",
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.type = OPTION_FLAG,
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.opt.flag = &cfg.text,
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},
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{
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.name = NULL,
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.type = OPTION_ARGV_FUNC,
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.opt.argvfunc = rsa_opt_cipher,
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},
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{ NULL }
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};
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static void
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rsa_usage()
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{
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int n = 0;
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fprintf(stderr,
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"usage: rsa [-ciphername] [-check] [-in file] "
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"[-inform fmt]\n"
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" [-modulus] [-noout] [-out file] [-outform fmt] "
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"[-passin src]\n"
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" [-passout src] [-pubin] [-pubout] [-text]\n\n");
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options_usage(rsa_options);
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fprintf(stderr, "\n");
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fprintf(stderr, "Valid ciphername values:\n\n");
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OBJ_NAME_do_all_sorted(OBJ_NAME_TYPE_CIPHER_METH, show_cipher, &n);
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fprintf(stderr, "\n");
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}
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int
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rsa_main(int argc, char **argv)
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{
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int ret = 1;
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RSA *rsa = NULL;
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int i;
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BIO *out = NULL;
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char *passin = NULL, *passout = NULL;
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if (pledge("stdio cpath wpath rpath tty", NULL) == -1) {
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perror("pledge");
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exit(1);
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}
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memset(&cfg, 0, sizeof(cfg));
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cfg.pvk_encr = 2;
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cfg.informat = FORMAT_PEM;
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cfg.outformat = FORMAT_PEM;
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if (options_parse(argc, argv, rsa_options, NULL, NULL) != 0) {
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rsa_usage();
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goto end;
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}
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if (!app_passwd(bio_err, cfg.passargin, cfg.passargout,
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&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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if (cfg.check && cfg.pubin) {
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BIO_printf(bio_err, "Only private keys can be checked\n");
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goto end;
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}
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out = BIO_new(BIO_s_file());
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{
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EVP_PKEY *pkey;
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if (cfg.pubin) {
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int tmpformat = -1;
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if (cfg.pubin == 2) {
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if (cfg.informat == FORMAT_PEM)
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tmpformat = FORMAT_PEMRSA;
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else if (cfg.informat == FORMAT_ASN1)
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tmpformat = FORMAT_ASN1RSA;
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} else
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tmpformat = cfg.informat;
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pkey = load_pubkey(bio_err, cfg.infile,
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tmpformat, 1, passin, "Public Key");
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} else
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pkey = load_key(bio_err, cfg.infile,
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cfg.informat, 1, passin, "Private Key");
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if (pkey != NULL)
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rsa = EVP_PKEY_get1_RSA(pkey);
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EVP_PKEY_free(pkey);
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}
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if (rsa == NULL) {
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ERR_print_errors(bio_err);
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goto end;
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}
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if (cfg.outfile == NULL) {
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BIO_set_fp(out, stdout, BIO_NOCLOSE);
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} else {
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if (BIO_write_filename(out, cfg.outfile) <= 0) {
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perror(cfg.outfile);
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goto end;
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}
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}
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if (cfg.text)
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if (!RSA_print(out, rsa, 0)) {
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perror(cfg.outfile);
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ERR_print_errors(bio_err);
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goto end;
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}
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if (cfg.modulus) {
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BIO_printf(out, "Modulus=");
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BN_print(out, RSA_get0_n(rsa));
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BIO_printf(out, "\n");
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}
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if (cfg.check) {
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int r = RSA_check_key(rsa);
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if (r == 1)
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BIO_printf(out, "RSA key ok\n");
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else if (r == 0) {
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unsigned long err;
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while ((err = ERR_peek_error()) != 0 &&
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ERR_GET_LIB(err) == ERR_LIB_RSA &&
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ERR_GET_FUNC(err) == RSA_F_RSA_CHECK_KEY &&
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ERR_GET_REASON(err) != ERR_R_MALLOC_FAILURE) {
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BIO_printf(out, "RSA key error: %s\n",
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ERR_reason_error_string(err));
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ERR_get_error(); /* remove e from error
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* stack */
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}
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}
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if (r == -1 || ERR_peek_error() != 0) { /* should happen only if
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* r == -1 */
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ERR_print_errors(bio_err);
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goto end;
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}
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}
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if (cfg.noout) {
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ret = 0;
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goto end;
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}
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BIO_printf(bio_err, "writing RSA key\n");
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if (cfg.outformat == FORMAT_ASN1) {
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if (cfg.pubout || cfg.pubin) {
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if (cfg.pubout == 2)
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i = i2d_RSAPublicKey_bio(out, rsa);
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else
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i = i2d_RSA_PUBKEY_bio(out, rsa);
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} else
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i = i2d_RSAPrivateKey_bio(out, rsa);
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} else if (cfg.outformat == FORMAT_PEM) {
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if (cfg.pubout || cfg.pubin) {
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if (cfg.pubout == 2)
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i = PEM_write_bio_RSAPublicKey(out, rsa);
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else
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i = PEM_write_bio_RSA_PUBKEY(out, rsa);
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} else
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i = PEM_write_bio_RSAPrivateKey(out, rsa,
|
||
|
|
cfg.enc, NULL, 0, NULL, passout);
|
||
|
|
#if !defined(OPENSSL_NO_DSA) && !defined(OPENSSL_NO_RC4)
|
||
|
|
} else if (cfg.outformat == FORMAT_MSBLOB ||
|
||
|
|
cfg.outformat == FORMAT_PVK) {
|
||
|
|
EVP_PKEY *pk;
|
||
|
|
pk = EVP_PKEY_new();
|
||
|
|
EVP_PKEY_set1_RSA(pk, rsa);
|
||
|
|
if (cfg.outformat == FORMAT_PVK)
|
||
|
|
i = i2b_PVK_bio(out, pk, cfg.pvk_encr, 0,
|
||
|
|
passout);
|
||
|
|
else if (cfg.pubin || cfg.pubout)
|
||
|
|
i = i2b_PublicKey_bio(out, pk);
|
||
|
|
else
|
||
|
|
i = i2b_PrivateKey_bio(out, pk);
|
||
|
|
EVP_PKEY_free(pk);
|
||
|
|
#endif
|
||
|
|
} else {
|
||
|
|
BIO_printf(bio_err,
|
||
|
|
"bad output format specified for outfile\n");
|
||
|
|
goto end;
|
||
|
|
}
|
||
|
|
if (i <= 0) {
|
||
|
|
BIO_printf(bio_err, "unable to write key\n");
|
||
|
|
ERR_print_errors(bio_err);
|
||
|
|
} else
|
||
|
|
ret = 0;
|
||
|
|
|
||
|
|
end:
|
||
|
|
BIO_free_all(out);
|
||
|
|
RSA_free(rsa);
|
||
|
|
free(passin);
|
||
|
|
free(passout);
|
||
|
|
|
||
|
|
return (ret);
|
||
|
|
}
|