apps/rsautl.c

   1 /*
   2  * Copyright 2000-2017 The OpenSSL Project Authors. All Rights Reserved.
   3  *
   4  * Licensed under the OpenSSL license (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 <string.h>
  17 # include <openssl/err.h>
  18 # include <openssl/pem.h>
  19 # include <openssl/rsa.h>
  20
  21 # define RSA_SIGN        1
  22 # define RSA_VERIFY      2
  23 # define RSA_ENCRYPT     3
  24 # define RSA_DECRYPT     4
  25
  26 # define KEY_PRIVKEY     1
  27 # define KEY_PUBKEY      2
  28 # define KEY_CERT        3
  29
  30 typedef enum OPTION_choice {
  31     OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
  32     OPT_ENGINE, OPT_IN, OPT_OUT, OPT_ASN1PARSE, OPT_HEXDUMP,
  33     OPT_RAW, OPT_OAEP, OPT_SSL, OPT_PKCS, OPT_X931,
  34     OPT_SIGN, OPT_VERIFY, OPT_REV, OPT_ENCRYPT, OPT_DECRYPT,
  35     OPT_PUBIN, OPT_CERTIN, OPT_INKEY, OPT_PASSIN, OPT_KEYFORM,
  36     OPT_R_ENUM
  37 } OPTION_CHOICE;
  38
  39 const OPTIONS rsautl_options[] = {
  40     {"help", OPT_HELP, '-', "Display this summary"},
  41     {"in", OPT_IN, '<', "Input file"},
  42     {"out", OPT_OUT, '>', "Output file"},
  43     {"inkey", OPT_INKEY, 's', "Input key"},
  44     {"keyform", OPT_KEYFORM, 'E', "Private key format - default PEM"},
  45     {"pubin", OPT_PUBIN, '-', "Input is an RSA public"},
  46     {"certin", OPT_CERTIN, '-', "Input is a cert carrying an RSA public key"},
  47     {"ssl", OPT_SSL, '-', "Use SSL v2 padding"},
  48     {"raw", OPT_RAW, '-', "Use no padding"},
  49     {"pkcs", OPT_PKCS, '-', "Use PKCS#1 v1.5 padding (default)"},
  50     {"oaep", OPT_OAEP, '-', "Use PKCS#1 OAEP"},
  51     {"sign", OPT_SIGN, '-', "Sign with private key"},
  52     {"verify", OPT_VERIFY, '-', "Verify with public key"},
  53     {"asn1parse", OPT_ASN1PARSE, '-',
  54      "Run output through asn1parse; useful with -verify"},
  55     {"hexdump", OPT_HEXDUMP, '-', "Hex dump output"},
  56     {"x931", OPT_X931, '-', "Use ANSI X9.31 padding"},
  57     {"rev", OPT_REV, '-', "Reverse the order of the input buffer"},
  58     {"encrypt", OPT_ENCRYPT, '-', "Encrypt with public key"},
  59     {"decrypt", OPT_DECRYPT, '-', "Decrypt with private key"},
  60     {"passin", OPT_PASSIN, 's', "Input file pass phrase source"},
  61     OPT_R_OPTIONS,
  62 # ifndef OPENSSL_NO_ENGINE
  63     {"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"},
  64 # endif
  65     {NULL}
  66 };
  67
  68 int rsautl_main(int argc, char **argv)
  69 {
  70     BIO *in = NULL, *out = NULL;
  71     ENGINE *e = NULL;
  72     EVP_PKEY *pkey = NULL;
  73     RSA *rsa = NULL;
  74     X509 *x;
  75     char *infile = NULL, *outfile = NULL, *keyfile = NULL;
  76     char *passinarg = NULL, *passin = NULL, *prog;
  77     char rsa_mode = RSA_VERIFY, key_type = KEY_PRIVKEY;
  78     unsigned char *rsa_in = NULL, *rsa_out = NULL, pad = RSA_PKCS1_PADDING;
  79     int rsa_inlen, keyformat = FORMAT_PEM, keysize, ret = 1;
  80     int rsa_outlen = 0, hexdump = 0, asn1parse = 0, need_priv = 0, rev = 0;
  81     OPTION_CHOICE o;
  82
  83     prog = opt_init(argc, argv, rsautl_options);
  84     while ((o = opt_next()) != OPT_EOF) {
  85         switch (o) {
  86         case OPT_EOF:
  87         case OPT_ERR:
  88  opthelp:
  89             BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
  90             goto end;
  91         case OPT_HELP:
  92             opt_help(rsautl_options);
  93             ret = 0;
  94             goto end;
  95         case OPT_KEYFORM:
  96             if (!opt_format(opt_arg(), OPT_FMT_PDE, &keyformat))
  97                 goto opthelp;
  98             break;
  99         case OPT_IN:
 100             infile = opt_arg();
 101             break;
 102         case OPT_OUT:
 103             outfile = opt_arg();
 104             break;
 105         case OPT_ENGINE:
 106             e = setup_engine(opt_arg(), 0);
 107             break;
 108         case OPT_ASN1PARSE:
 109             asn1parse = 1;
 110             break;
 111         case OPT_HEXDUMP:
 112             hexdump = 1;
 113             break;
 114         case OPT_RAW:
 115             pad = RSA_NO_PADDING;
 116             break;
 117         case OPT_OAEP:
 118             pad = RSA_PKCS1_OAEP_PADDING;
 119             break;
 120         case OPT_SSL:
 121             pad = RSA_SSLV23_PADDING;
 122             break;
 123         case OPT_PKCS:
 124             pad = RSA_PKCS1_PADDING;
 125             break;
 126         case OPT_X931:
 127             pad = RSA_X931_PADDING;
 128             break;
 129         case OPT_SIGN:
 130             rsa_mode = RSA_SIGN;
 131             need_priv = 1;
 132             break;
 133         case OPT_VERIFY:
 134             rsa_mode = RSA_VERIFY;
 135             break;
 136         case OPT_REV:
 137             rev = 1;
 138             break;
 139         case OPT_ENCRYPT:
 140             rsa_mode = RSA_ENCRYPT;
 141             break;
 142         case OPT_DECRYPT:
 143             rsa_mode = RSA_DECRYPT;
 144             need_priv = 1;
 145             break;
 146         case OPT_PUBIN:
 147             key_type = KEY_PUBKEY;
 148             break;
 149         case OPT_CERTIN:
 150             key_type = KEY_CERT;
 151             break;
 152         case OPT_INKEY:
 153             keyfile = opt_arg();
 154             break;
 155         case OPT_PASSIN:
 156             passinarg = opt_arg();
 157             break;
 158         case OPT_R_CASES:
 159             if (!opt_rand(o))
 160                 goto end;
 161             break;
 162         }
 163     }
 164     argc = opt_num_rest();
 165     if (argc != 0)
 166         goto opthelp;
 167
 168     if (need_priv && (key_type != KEY_PRIVKEY)) {
 169         BIO_printf(bio_err, "A private key is needed for this operation\n");
 170         goto end;
 171     }
 172
 173     if (!app_passwd(passinarg, NULL, &passin, NULL)) {
 174         BIO_printf(bio_err, "Error getting password\n");
 175         goto end;
 176     }
 177
 178     switch (key_type) {
 179     case KEY_PRIVKEY:
 180         pkey = load_key(keyfile, keyformat, 0, passin, e, "Private Key");
 181         break;
 182
 183     case KEY_PUBKEY:
 184         pkey = load_pubkey(keyfile, keyformat, 0, NULL, e, "Public Key");
 185         break;
 186
 187     case KEY_CERT:
 188         x = load_cert(keyfile, keyformat, "Certificate");
 189         if (x) {
 190             pkey = X509_get_pubkey(x);
 191             X509_free(x);
 192         }
 193         break;
 194     }
 195
 196     if (pkey == NULL)
 197         return 1;
 198
 199     rsa = EVP_PKEY_get1_RSA(pkey);
 200     EVP_PKEY_free(pkey);
 201
 202     if (rsa == NULL) {
 203         BIO_printf(bio_err, "Error getting RSA key\n");
 204         ERR_print_errors(bio_err);
 205         goto end;
 206     }
 207
 208     in = bio_open_default(infile, 'r', FORMAT_BINARY);
 209     if (in == NULL)
 210         goto end;
 211     out = bio_open_default(outfile, 'w', FORMAT_BINARY);
 212     if (out == NULL)
 213         goto end;
 214
 215     keysize = RSA_size(rsa);
 216
 217     rsa_in = app_malloc(keysize * 2, "hold rsa key");
 218     rsa_out = app_malloc(keysize, "output rsa key");
 219
 220     /* Read the input data */
 221     rsa_inlen = BIO_read(in, rsa_in, keysize * 2);
 222     if (rsa_inlen < 0) {
 223         BIO_printf(bio_err, "Error reading input Data\n");
 224         goto end;
 225     }
 226     if (rev) {
 227         int i;
 228         unsigned char ctmp;
 229         for (i = 0; i < rsa_inlen / 2; i++) {
 230             ctmp = rsa_in[i];
 231             rsa_in[i] = rsa_in[rsa_inlen - 1 - i];
 232             rsa_in[rsa_inlen - 1 - i] = ctmp;
 233         }
 234     }
 235     switch (rsa_mode) {
 236
 237     case RSA_VERIFY:
 238         rsa_outlen = RSA_public_decrypt(rsa_inlen, rsa_in, rsa_out, rsa, pad);
 239         break;
 240
 241     case RSA_SIGN:
 242         rsa_outlen =
 243             RSA_private_encrypt(rsa_inlen, rsa_in, rsa_out, rsa, pad);
 244         break;
 245
 246     case RSA_ENCRYPT:
 247         rsa_outlen = RSA_public_encrypt(rsa_inlen, rsa_in, rsa_out, rsa, pad);
 248         break;
 249
 250     case RSA_DECRYPT:
 251         rsa_outlen =
 252             RSA_private_decrypt(rsa_inlen, rsa_in, rsa_out, rsa, pad);
 253         break;
 254     }
 255
 256     if (rsa_outlen < 0) {
 257         BIO_printf(bio_err, "RSA operation error\n");
 258         ERR_print_errors(bio_err);
 259         goto end;
 260     }
 261     ret = 0;
 262     if (asn1parse) {
 263         if (!ASN1_parse_dump(out, rsa_out, rsa_outlen, 1, -1)) {
 264             ERR_print_errors(bio_err);
 265         }
 266     } else if (hexdump) {
 267         BIO_dump(out, (char *)rsa_out, rsa_outlen);
 268     } else {
 269         BIO_write(out, rsa_out, rsa_outlen);
 270     }
 271  end:
 272     RSA_free(rsa);
 273     release_engine(e);
 274     BIO_free(in);
 275     BIO_free_all(out);
 276     OPENSSL_free(rsa_in);
 277     OPENSSL_free(rsa_out);
 278     OPENSSL_free(passin);
 279     return ret;
 280 }
 281 #endif