apps/pkey.c

   1 /*
   2  * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
   3  * 2006
   4  */
   5 /* ====================================================================
   6  * Copyright (c) 2006 The OpenSSL Project.  All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  *
  12  * 1. Redistributions of source code must retain the above copyright
  13  *    notice, this list of conditions and the following disclaimer.
  14  *
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in
  17  *    the documentation and/or other materials provided with the
  18  *    distribution.
  19  *
  20  * 3. All advertising materials mentioning features or use of this
  21  *    software must display the following acknowledgment:
  22  *    "This product includes software developed by the OpenSSL Project
  23  *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
  24  *
  25  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
  26  *    endorse or promote products derived from this software without
  27  *    prior written permission. For written permission, please contact
  28  *    licensing@OpenSSL.org.
  29  *
  30  * 5. Products derived from this software may not be called "OpenSSL"
  31  *    nor may "OpenSSL" appear in their names without prior written
  32  *    permission of the OpenSSL Project.
  33  *
  34  * 6. Redistributions of any form whatsoever must retain the following
  35  *    acknowledgment:
  36  *    "This product includes software developed by the OpenSSL Project
  37  *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
  38  *
  39  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
  40  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  41  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  42  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
  43  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  44  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  45  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  46  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  47  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  48  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  49  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
  50  * OF THE POSSIBILITY OF SUCH DAMAGE.
  51  * ====================================================================
  52  *
  53  * This product includes cryptographic software written by Eric Young
  54  * (eay@cryptsoft.com).  This product includes software written by Tim
  55  * Hudson (tjh@cryptsoft.com).
  56  *
  57  */
  58 #include <stdio.h>
  59 #include <string.h>
  60 #include "apps.h"
  61 #include <openssl/pem.h>
  62 #include <openssl/err.h>
  63 #include <openssl/evp.h>
  64
  65 typedef enum OPTION_choice {
  66     OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
  67     OPT_INFORM, OPT_OUTFORM, OPT_PASSIN, OPT_PASSOUT, OPT_ENGINE,
  68     OPT_IN, OPT_OUT, OPT_PUBIN, OPT_PUBOUT, OPT_TEXT_PUB,
  69     OPT_TEXT, OPT_NOOUT, OPT_MD
  70 } OPTION_CHOICE;
  71
  72 OPTIONS pkey_options[] = {
  73     {"help", OPT_HELP, '-', "Display this summary"},
  74     {"inform", OPT_INFORM, 'F', "Input format (DER or PEM)"},
  75     {"outform", OPT_OUTFORM, 'F', "Output format (DER or PEM)"},
  76     {"passin", OPT_PASSIN, 's', "Input file pass phrase source"},
  77     {"passout", OPT_PASSOUT, 's', "Output file pass phrase source"},
  78     {"in", OPT_IN, '<', "Input file"},
  79     {"out", OPT_OUT, '>', "Output file"},
  80     {"pubin", OPT_PUBIN, '-',
  81      "Read public key from input (default is private key)"},
  82     {"pubout", OPT_PUBOUT, '-', "Output public key, not private"},
  83     {"text_pub", OPT_TEXT_PUB, '-', "Only output public key components"},
  84     {"text", OPT_TEXT, '-', "Output in plaintext as well"},
  85     {"noout", OPT_NOOUT, '-', "Don't output the key"},
  86     {"", OPT_MD, '-', "Any supported cipher"},
  87 #ifndef OPENSSL_NO_ENGINE
  88     {"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"},
  89 #endif
  90     {NULL}
  91 };
  92
  93 int pkey_main(int argc, char **argv)
  94 {
  95     BIO *in = NULL, *out = NULL;
  96     ENGINE *e = NULL;
  97     EVP_PKEY *pkey = NULL;
  98     const EVP_CIPHER *cipher = NULL;
  99     char *infile = NULL, *outfile = NULL, *passin = NULL, *passout = NULL;
 100     char *passinarg = NULL, *passoutarg = NULL, *prog, *engine = NULL;
 101     OPTION_CHOICE o;
 102     int informat = FORMAT_PEM, outformat = FORMAT_PEM;
 103     int pubin = 0, pubout = 0, pubtext = 0, text = 0, noout = 0, ret = 1;
 104
 105     prog = opt_init(argc, argv, pkey_options);
 106     while ((o = opt_next()) != OPT_EOF) {
 107         switch (o) {
 108         case OPT_EOF:
 109         case OPT_ERR:
 110  opthelp:
 111             BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
 112             goto end;
 113         case OPT_HELP:
 114             opt_help(pkey_options);
 115             ret = 0;
 116             goto end;
 117         case OPT_INFORM:
 118             if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &informat))
 119                 goto opthelp;
 120             break;
 121         case OPT_OUTFORM:
 122             if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &outformat))
 123                 goto opthelp;
 124             break;
 125         case OPT_PASSIN:
 126             passinarg = opt_arg();
 127             break;
 128         case OPT_PASSOUT:
 129             passoutarg = opt_arg();
 130             break;
 131         case OPT_ENGINE:
 132             engine = opt_arg();
 133             break;
 134         case OPT_IN:
 135             infile = opt_arg();
 136             break;
 137         case OPT_OUT:
 138             outfile = opt_arg();
 139             break;
 140         case OPT_PUBIN:
 141             pubin = pubout = pubtext = 1;
 142             break;
 143         case OPT_PUBOUT:
 144             pubout = 1;
 145             break;
 146         case OPT_TEXT_PUB:
 147             pubtext = text = 1;
 148             break;
 149         case OPT_TEXT:
 150             text = 1;
 151             break;
 152         case OPT_NOOUT:
 153             noout = 1;
 154             break;
 155         case OPT_MD:
 156             if (!opt_cipher(opt_unknown(), &cipher))
 157                 goto opthelp;
 158         }
 159     }
 160     argc = opt_num_rest();
 161     argv = opt_rest();
 162
 163 #ifndef OPENSSL_NO_ENGINE
 164     e = setup_engine(engine, 0);
 165 #endif
 166
 167     if (!app_passwd(passinarg, passoutarg, &passin, &passout)) {
 168         BIO_printf(bio_err, "Error getting passwords\n");
 169         goto end;
 170     }
 171
 172     out = bio_open_default(outfile, "wb");
 173     if (out == NULL)
 174         goto end;
 175
 176     if (pubin)
 177         pkey = load_pubkey(infile, informat, 1, passin, e, "Public Key");
 178     else
 179         pkey = load_key(infile, informat, 1, passin, e, "key");
 180     if (!pkey)
 181         goto end;
 182
 183     if (!noout) {
 184         if (outformat == FORMAT_PEM) {
 185             if (pubout)
 186                 PEM_write_bio_PUBKEY(out, pkey);
 187             else
 188                 PEM_write_bio_PrivateKey(out, pkey, cipher,
 189                                          NULL, 0, NULL, passout);
 190         } else if (outformat == FORMAT_ASN1) {
 191             if (pubout)
 192                 i2d_PUBKEY_bio(out, pkey);
 193             else
 194                 i2d_PrivateKey_bio(out, pkey);
 195         } else {
 196             BIO_printf(bio_err, "Bad format specified for key\n");
 197             goto end;
 198         }
 199
 200     }
 201
 202     if (text) {
 203         if (pubtext)
 204             EVP_PKEY_print_public(out, pkey, 0, NULL);
 205         else
 206             EVP_PKEY_print_private(out, pkey, 0, NULL);
 207     }
 208
 209     ret = 0;
 210
 211  end:
 212     EVP_PKEY_free(pkey);
 213     BIO_free_all(out);
 214     BIO_free(in);
 215     if (passin)
 216         OPENSSL_free(passin);
 217     if (passout)
 218         OPENSSL_free(passout);
 219
 220     return ret;
 221 }