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 /* We need to use the deprecated RSA low level calls */
  11 #define OPENSSL_SUPPRESS_DEPRECATED
  12
  13 #include <openssl/opensslconf.h>
  14 #ifdef OPENSSL_NO_RSA
  15 NON_EMPTY_TRANSLATION_UNIT
  16 #else
  17
  18 # include "apps.h"
  19 # include "progs.h"
  20 # include <string.h>
  21 # include <openssl/err.h>
  22 # include <openssl/pem.h>
  23 # include <openssl/rsa.h>
  24
  25 # define RSA_SIGN        1
  26 # define RSA_VERIFY      2
  27 # define RSA_ENCRYPT     3
  28 # define RSA_DECRYPT     4
  29
  30 # define KEY_PRIVKEY     1
  31 # define KEY_PUBKEY      2
  32 # define KEY_CERT        3
  33
  34 typedef enum OPTION_choice {
  35     OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
  36     OPT_ENGINE, OPT_IN, OPT_OUT, OPT_ASN1PARSE, OPT_HEXDUMP,
  37     OPT_RSA_RAW, OPT_OAEP, OPT_SSL, OPT_PKCS, OPT_X931,
  38     OPT_SIGN, OPT_VERIFY, OPT_REV, OPT_ENCRYPT, OPT_DECRYPT,
  39     OPT_PUBIN, OPT_CERTIN, OPT_INKEY, OPT_PASSIN, OPT_KEYFORM,
  40     OPT_R_ENUM, OPT_PROV_ENUM
  41 } OPTION_CHOICE;
  42
  43 const OPTIONS rsautl_options[] = {
  44     OPT_SECTION("General"),
  45     {"help", OPT_HELP, '-', "Display this summary"},
  46     {"sign", OPT_SIGN, '-', "Sign with private key"},
  47     {"verify", OPT_VERIFY, '-', "Verify with public key"},
  48     {"encrypt", OPT_ENCRYPT, '-', "Encrypt with public key"},
  49     {"decrypt", OPT_DECRYPT, '-', "Decrypt with private key"},
  50 # ifndef OPENSSL_NO_ENGINE
  51     {"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"},
  52 # endif
  53
  54     OPT_SECTION("Input"),
  55     {"in", OPT_IN, '<', "Input file"},
  56     {"inkey", OPT_INKEY, 's', "Input key"},
  57     {"keyform", OPT_KEYFORM, 'E', "Private key format - default PEM"},
  58     {"pubin", OPT_PUBIN, '-', "Input is an RSA public"},
  59     {"certin", OPT_CERTIN, '-', "Input is a cert carrying an RSA public key"},
  60     {"rev", OPT_REV, '-', "Reverse the order of the input buffer"},
  61     {"passin", OPT_PASSIN, 's', "Input file pass phrase source"},
  62
  63     OPT_SECTION("Output"),
  64     {"out", OPT_OUT, '>', "Output file"},
  65     {"ssl", OPT_SSL, '-', "Use SSL v2 padding"},
  66     {"raw", OPT_RSA_RAW, '-', "Use no padding"},
  67     {"pkcs", OPT_PKCS, '-', "Use PKCS#1 v1.5 padding (default)"},
  68     {"x931", OPT_X931, '-', "Use ANSI X9.31 padding"},
  69     {"oaep", OPT_OAEP, '-', "Use PKCS#1 OAEP"},
  70     {"asn1parse", OPT_ASN1PARSE, '-',
  71      "Run output through asn1parse; useful with -verify"},
  72     {"hexdump", OPT_HEXDUMP, '-', "Hex dump output"},
  73
  74     OPT_R_OPTIONS,
  75     OPT_PROV_OPTIONS,
  76     {NULL}
  77 };
  78
  79 int rsautl_main(int argc, char **argv)
  80 {
  81     BIO *in = NULL, *out = NULL;
  82     ENGINE *e = NULL;
  83     EVP_PKEY *pkey = NULL;
  84     RSA *rsa = NULL;
  85     X509 *x;
  86     char *infile = NULL, *outfile = NULL, *keyfile = NULL;
  87     char *passinarg = NULL, *passin = NULL, *prog;
  88     char rsa_mode = RSA_VERIFY, key_type = KEY_PRIVKEY;
  89     unsigned char *rsa_in = NULL, *rsa_out = NULL, pad = RSA_PKCS1_PADDING;
  90     int rsa_inlen, keyformat = FORMAT_PEM, keysize, ret = 1;
  91     int rsa_outlen = 0, hexdump = 0, asn1parse = 0, need_priv = 0, rev = 0;
  92     OPTION_CHOICE o;
  93
  94     prog = opt_init(argc, argv, rsautl_options);
  95     while ((o = opt_next()) != OPT_EOF) {
  96         switch (o) {
  97         case OPT_EOF:
  98         case OPT_ERR:
  99  opthelp:
 100             BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
 101             goto end;
 102         case OPT_HELP:
 103             opt_help(rsautl_options);
 104             ret = 0;
 105             goto end;
 106         case OPT_KEYFORM:
 107             if (!opt_format(opt_arg(), OPT_FMT_PDE, &keyformat))
 108                 goto opthelp;
 109             break;
 110         case OPT_IN:
 111             infile = opt_arg();
 112             break;
 113         case OPT_OUT:
 114             outfile = opt_arg();
 115             break;
 116         case OPT_ENGINE:
 117             e = setup_engine(opt_arg(), 0);
 118             break;
 119         case OPT_ASN1PARSE:
 120             asn1parse = 1;
 121             break;
 122         case OPT_HEXDUMP:
 123             hexdump = 1;
 124             break;
 125         case OPT_RSA_RAW:
 126             pad = RSA_NO_PADDING;
 127             break;
 128         case OPT_OAEP:
 129             pad = RSA_PKCS1_OAEP_PADDING;
 130             break;
 131         case OPT_SSL:
 132             pad = RSA_SSLV23_PADDING;
 133             break;
 134         case OPT_PKCS:
 135             pad = RSA_PKCS1_PADDING;
 136             break;
 137         case OPT_X931:
 138             pad = RSA_X931_PADDING;
 139             break;
 140         case OPT_SIGN:
 141             rsa_mode = RSA_SIGN;
 142             need_priv = 1;
 143             break;
 144         case OPT_VERIFY:
 145             rsa_mode = RSA_VERIFY;
 146             break;
 147         case OPT_REV:
 148             rev = 1;
 149             break;
 150         case OPT_ENCRYPT:
 151             rsa_mode = RSA_ENCRYPT;
 152             break;
 153         case OPT_DECRYPT:
 154             rsa_mode = RSA_DECRYPT;
 155             need_priv = 1;
 156             break;
 157         case OPT_PUBIN:
 158             key_type = KEY_PUBKEY;
 159             break;
 160         case OPT_CERTIN:
 161             key_type = KEY_CERT;
 162             break;
 163         case OPT_INKEY:
 164             keyfile = opt_arg();
 165             break;
 166         case OPT_PASSIN:
 167             passinarg = opt_arg();
 168             break;
 169         case OPT_R_CASES:
 170             if (!opt_rand(o))
 171                 goto end;
 172             break;
 173         case OPT_PROV_CASES:
 174             if (!opt_provider(o))
 175                 goto end;
 176             break;
 177         }
 178     }
 179     argc = opt_num_rest();
 180     if (argc != 0)
 181         goto opthelp;
 182
 183     if (need_priv && (key_type != KEY_PRIVKEY)) {
 184         BIO_printf(bio_err, "A private key is needed for this operation\n");
 185         goto end;
 186     }
 187
 188     if (!app_passwd(passinarg, NULL, &passin, NULL)) {
 189         BIO_printf(bio_err, "Error getting password\n");
 190         goto end;
 191     }
 192
 193     switch (key_type) {
 194     case KEY_PRIVKEY:
 195         pkey = load_key(keyfile, keyformat, 0, passin, e, "Private Key");
 196         break;
 197
 198     case KEY_PUBKEY:
 199         pkey = load_pubkey(keyfile, keyformat, 0, NULL, e, "Public Key");
 200         break;
 201
 202     case KEY_CERT:
 203         x = load_cert(keyfile, keyformat, "Certificate");
 204         if (x) {
 205             pkey = X509_get_pubkey(x);
 206             X509_free(x);
 207         }
 208         break;
 209     }
 210
 211     if (pkey == NULL)
 212         return 1;
 213
 214     rsa = EVP_PKEY_get1_RSA(pkey);
 215     EVP_PKEY_free(pkey);
 216
 217     if (rsa == NULL) {
 218         BIO_printf(bio_err, "Error getting RSA key\n");
 219         ERR_print_errors(bio_err);
 220         goto end;
 221     }
 222
 223     in = bio_open_default(infile, 'r', FORMAT_BINARY);
 224     if (in == NULL)
 225         goto end;
 226     out = bio_open_default(outfile, 'w', FORMAT_BINARY);
 227     if (out == NULL)
 228         goto end;
 229
 230     keysize = RSA_size(rsa);
 231
 232     rsa_in = app_malloc(keysize * 2, "hold rsa key");
 233     rsa_out = app_malloc(keysize, "output rsa key");
 234
 235     /* Read the input data */
 236     rsa_inlen = BIO_read(in, rsa_in, keysize * 2);
 237     if (rsa_inlen < 0) {
 238         BIO_printf(bio_err, "Error reading input Data\n");
 239         goto end;
 240     }
 241     if (rev) {
 242         int i;
 243         unsigned char ctmp;
 244         for (i = 0; i < rsa_inlen / 2; i++) {
 245             ctmp = rsa_in[i];
 246             rsa_in[i] = rsa_in[rsa_inlen - 1 - i];
 247             rsa_in[rsa_inlen - 1 - i] = ctmp;
 248         }
 249     }
 250     switch (rsa_mode) {
 251
 252     case RSA_VERIFY:
 253         rsa_outlen = RSA_public_decrypt(rsa_inlen, rsa_in, rsa_out, rsa, pad);
 254         break;
 255
 256     case RSA_SIGN:
 257         rsa_outlen =
 258             RSA_private_encrypt(rsa_inlen, rsa_in, rsa_out, rsa, pad);
 259         break;
 260
 261     case RSA_ENCRYPT:
 262         rsa_outlen = RSA_public_encrypt(rsa_inlen, rsa_in, rsa_out, rsa, pad);
 263         break;
 264
 265     case RSA_DECRYPT:
 266         rsa_outlen =
 267             RSA_private_decrypt(rsa_inlen, rsa_in, rsa_out, rsa, pad);
 268         break;
 269     }
 270
 271     if (rsa_outlen < 0) {
 272         BIO_printf(bio_err, "RSA operation error\n");
 273         ERR_print_errors(bio_err);
 274         goto end;
 275     }
 276     ret = 0;
 277     if (asn1parse) {
 278         if (!ASN1_parse_dump(out, rsa_out, rsa_outlen, 1, -1)) {
 279             ERR_print_errors(bio_err);
 280         }
 281     } else if (hexdump) {
 282         BIO_dump(out, (char *)rsa_out, rsa_outlen);
 283     } else {
 284         BIO_write(out, rsa_out, rsa_outlen);
 285     }
 286  end:
 287     RSA_free(rsa);
 288     release_engine(e);
 289     BIO_free(in);
 290     BIO_free_all(out);
 291     OPENSSL_free(rsa_in);
 292     OPENSSL_free(rsa_out);
 293     OPENSSL_free(passin);
 294     return ret;
 295 }
 296 #endif