apps/rsautl.c

   1 /*
   2  * Copyright 2000-2018 The OpenSSL Project Authors. All Rights Reserved.
   3  *
   4  * Licensed under the Apache License 2.0 (the "License").  You may not use
   5  * this file except in compliance with the License.  You can obtain a copy
   6  * in the file LICENSE in the source distribution or at
   7  * https://www.openssl.org/source/license.html
   8  */
   9
  10 #include <openssl/opensslconf.h>
  11 #ifdef OPENSSL_NO_RSA
  12 NON_EMPTY_TRANSLATION_UNIT
  13 #else
  14
  15 # include "apps.h"
  16 # include "progs.h"
  17 # include <string.h>
  18 # include <openssl/err.h>
  19 # include <openssl/pem.h>
  20 # include <openssl/rsa.h>
  21
  22 # define RSA_SIGN        1
  23 # define RSA_VERIFY      2
  24 # define RSA_ENCRYPT     3
  25 # define RSA_DECRYPT     4
  26
  27 # define KEY_PRIVKEY     1
  28 # define KEY_PUBKEY      2
  29 # define KEY_CERT        3
  30
  31 typedef enum OPTION_choice {
  32     OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
  33     OPT_ENGINE, OPT_IN, OPT_OUT, OPT_ASN1PARSE, OPT_HEXDUMP,
  34     OPT_RSA_RAW, OPT_OAEP, OPT_SSL, OPT_PKCS, OPT_X931,
  35     OPT_SIGN, OPT_VERIFY, OPT_REV, OPT_ENCRYPT, OPT_DECRYPT,
  36     OPT_PUBIN, OPT_CERTIN, OPT_INKEY, OPT_PASSIN, OPT_KEYFORM,
  37     OPT_R_ENUM
  38 } OPTION_CHOICE;
  39
  40 const OPTIONS rsautl_options[] = {
  41     {"help", OPT_HELP, '-', "Display this summary"},
  42     {"in", OPT_IN, '<', "Input file"},
  43     {"out", OPT_OUT, '>', "Output file"},
  44     {"inkey", OPT_INKEY, 's', "Input key"},
  45     {"keyform", OPT_KEYFORM, 'E', "Private key format - default PEM"},
  46     {"pubin", OPT_PUBIN, '-', "Input is an RSA public"},
  47     {"certin", OPT_CERTIN, '-', "Input is a cert carrying an RSA public key"},
  48     {"ssl", OPT_SSL, '-', "Use SSL v2 padding"},
  49     {"raw", OPT_RSA_RAW, '-', "Use no padding"},
  50     {"pkcs", OPT_PKCS, '-', "Use PKCS#1 v1.5 padding (default)"},
  51     {"oaep", OPT_OAEP, '-', "Use PKCS#1 OAEP"},
  52     {"sign", OPT_SIGN, '-', "Sign with private key"},
  53     {"verify", OPT_VERIFY, '-', "Verify with public key"},
  54     {"asn1parse", OPT_ASN1PARSE, '-',
  55      "Run output through asn1parse; useful with -verify"},
  56     {"hexdump", OPT_HEXDUMP, '-', "Hex dump output"},
  57     {"x931", OPT_X931, '-', "Use ANSI X9.31 padding"},
  58     {"rev", OPT_REV, '-', "Reverse the order of the input buffer"},
  59     {"encrypt", OPT_ENCRYPT, '-', "Encrypt with public key"},
  60     {"decrypt", OPT_DECRYPT, '-', "Decrypt with private key"},
  61     {"passin", OPT_PASSIN, 's', "Input file pass phrase source"},
  62     OPT_R_OPTIONS,
  63 # ifndef OPENSSL_NO_ENGINE
  64     {"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"},
  65 # endif
  66     {NULL}
  67 };
  68
  69 int rsautl_main(int argc, char **argv)
  70 {
  71     BIO *in = NULL, *out = NULL;
  72     ENGINE *e = NULL;
  73     EVP_PKEY *pkey = NULL;
  74     RSA *rsa = NULL;
  75     X509 *x;
  76     char *infile = NULL, *outfile = NULL, *keyfile = NULL;
  77     char *passinarg = NULL, *passin = NULL, *prog;
  78     char rsa_mode = RSA_VERIFY, key_type = KEY_PRIVKEY;
  79     unsigned char *rsa_in = NULL, *rsa_out = NULL, pad = RSA_PKCS1_PADDING;
  80     int rsa_inlen, keyformat = FORMAT_PEM, keysize, ret = 1;
  81     int rsa_outlen = 0, hexdump = 0, asn1parse = 0, need_priv = 0, rev = 0;
  82     OPTION_CHOICE o;
  83
  84     prog = opt_init(argc, argv, rsautl_options);
  85     while ((o = opt_next()) != OPT_EOF) {
  86         switch (o) {
  87         case OPT_EOF:
  88         case OPT_ERR:
  89  opthelp:
  90             BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
  91             goto end;
  92         case OPT_HELP:
  93             opt_help(rsautl_options);
  94             ret = 0;
  95             goto end;
  96         case OPT_KEYFORM:
  97             if (!opt_format(opt_arg(), OPT_FMT_PDE, &keyformat))
  98                 goto opthelp;
  99             break;
 100         case OPT_IN:
 101             infile = opt_arg();
 102             break;
 103         case OPT_OUT:
 104             outfile = opt_arg();
 105             break;
 106         case OPT_ENGINE:
 107             e = setup_engine(opt_arg(), 0);
 108             break;
 109         case OPT_ASN1PARSE:
 110             asn1parse = 1;
 111             break;
 112         case OPT_HEXDUMP:
 113             hexdump = 1;
 114             break;
 115         case OPT_RSA_RAW:
 116             pad = RSA_NO_PADDING;
 117             break;
 118         case OPT_OAEP:
 119             pad = RSA_PKCS1_OAEP_PADDING;
 120             break;
 121         case OPT_SSL:
 122             pad = RSA_SSLV23_PADDING;
 123             break;
 124         case OPT_PKCS:
 125             pad = RSA_PKCS1_PADDING;
 126             break;
 127         case OPT_X931:
 128             pad = RSA_X931_PADDING;
 129             break;
 130         case OPT_SIGN:
 131             rsa_mode = RSA_SIGN;
 132             need_priv = 1;
 133             break;
 134         case OPT_VERIFY:
 135             rsa_mode = RSA_VERIFY;
 136             break;
 137         case OPT_REV:
 138             rev = 1;
 139             break;
 140         case OPT_ENCRYPT:
 141             rsa_mode = RSA_ENCRYPT;
 142             break;
 143         case OPT_DECRYPT:
 144             rsa_mode = RSA_DECRYPT;
 145             need_priv = 1;
 146             break;
 147         case OPT_PUBIN:
 148             key_type = KEY_PUBKEY;
 149             break;
 150         case OPT_CERTIN:
 151             key_type = KEY_CERT;
 152             break;
 153         case OPT_INKEY:
 154             keyfile = opt_arg();
 155             break;
 156         case OPT_PASSIN:
 157             passinarg = opt_arg();
 158             break;
 159         case OPT_R_CASES:
 160             if (!opt_rand(o))
 161                 goto end;
 162             break;
 163         }
 164     }
 165     argc = opt_num_rest();
 166     if (argc != 0)
 167         goto opthelp;
 168
 169     if (need_priv && (key_type != KEY_PRIVKEY)) {
 170         BIO_printf(bio_err, "A private key is needed for this operation\n");
 171         goto end;
 172     }
 173
 174     if (!app_passwd(passinarg, NULL, &passin, NULL)) {
 175         BIO_printf(bio_err, "Error getting password\n");
 176         goto end;
 177     }
 178
 179     switch (key_type) {
 180     case KEY_PRIVKEY:
 181         pkey = load_key(keyfile, keyformat, 0, passin, e, "Private Key");
 182         break;
 183
 184     case KEY_PUBKEY:
 185         pkey = load_pubkey(keyfile, keyformat, 0, NULL, e, "Public Key");
 186         break;
 187
 188     case KEY_CERT:
 189         x = load_cert(keyfile, keyformat, "Certificate");
 190         if (x) {
 191             pkey = X509_get_pubkey(x);
 192             X509_free(x);
 193         }
 194         break;
 195     }
 196
 197     if (pkey == NULL)
 198         return 1;
 199
 200     rsa = EVP_PKEY_get1_RSA(pkey);
 201     EVP_PKEY_free(pkey);
 202
 203     if (rsa == NULL) {
 204         BIO_printf(bio_err, "Error getting RSA key\n");
 205         ERR_print_errors(bio_err);
 206         goto end;
 207     }
 208
 209     in = bio_open_default(infile, 'r', FORMAT_BINARY);
 210     if (in == NULL)
 211         goto end;
 212     out = bio_open_default(outfile, 'w', FORMAT_BINARY);
 213     if (out == NULL)
 214         goto end;
 215
 216     keysize = RSA_size(rsa);
 217
 218     rsa_in = app_malloc(keysize * 2, "hold rsa key");
 219     rsa_out = app_malloc(keysize, "output rsa key");
 220
 221     /* Read the input data */
 222     rsa_inlen = BIO_read(in, rsa_in, keysize * 2);
 223     if (rsa_inlen < 0) {
 224         BIO_printf(bio_err, "Error reading input Data\n");
 225         goto end;
 226     }
 227     if (rev) {
 228         int i;
 229         unsigned char ctmp;
 230         for (i = 0; i < rsa_inlen / 2; i++) {
 231             ctmp = rsa_in[i];
 232             rsa_in[i] = rsa_in[rsa_inlen - 1 - i];
 233             rsa_in[rsa_inlen - 1 - i] = ctmp;
 234         }
 235     }
 236     switch (rsa_mode) {
 237
 238     case RSA_VERIFY:
 239         rsa_outlen = RSA_public_decrypt(rsa_inlen, rsa_in, rsa_out, rsa, pad);
 240         break;
 241
 242     case RSA_SIGN:
 243         rsa_outlen =
 244             RSA_private_encrypt(rsa_inlen, rsa_in, rsa_out, rsa, pad);
 245         break;
 246
 247     case RSA_ENCRYPT:
 248         rsa_outlen = RSA_public_encrypt(rsa_inlen, rsa_in, rsa_out, rsa, pad);
 249         break;
 250
 251     case RSA_DECRYPT:
 252         rsa_outlen =
 253             RSA_private_decrypt(rsa_inlen, rsa_in, rsa_out, rsa, pad);
 254         break;
 255     }
 256
 257     if (rsa_outlen < 0) {
 258         BIO_printf(bio_err, "RSA operation error\n");
 259         ERR_print_errors(bio_err);
 260         goto end;
 261     }
 262     ret = 0;
 263     if (asn1parse) {
 264         if (!ASN1_parse_dump(out, rsa_out, rsa_outlen, 1, -1)) {
 265             ERR_print_errors(bio_err);
 266         }
 267     } else if (hexdump) {
 268         BIO_dump(out, (char *)rsa_out, rsa_outlen);
 269     } else {
 270         BIO_write(out, rsa_out, rsa_outlen);
 271     }
 272  end:
 273     RSA_free(rsa);
 274     release_engine(e);
 275     BIO_free(in);
 276     BIO_free_all(out);
 277     OPENSSL_free(rsa_in);
 278     OPENSSL_free(rsa_out);
 279     OPENSSL_free(passin);
 280     return ret;
 281 }
 282 #endif