apps/rsautl.c

   1 /*
   2  * Copyright 2000-2021 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
  12 #include "apps.h"
  13 #include "progs.h"
  14 #include <string.h>
  15 #include <openssl/err.h>
  16 #include <openssl/pem.h>
  17 #include <openssl/rsa.h>
  18
  19 #define RSA_SIGN        1
  20 #define RSA_VERIFY      2
  21 #define RSA_ENCRYPT     3
  22 #define RSA_DECRYPT     4
  23
  24 #define KEY_PRIVKEY     1
  25 #define KEY_PUBKEY      2
  26 #define KEY_CERT        3
  27
  28 typedef enum OPTION_choice {
  29     OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
  30     OPT_ENGINE, OPT_IN, OPT_OUT, OPT_ASN1PARSE, OPT_HEXDUMP,
  31     OPT_RSA_RAW, OPT_OAEP, OPT_SSL, OPT_PKCS, OPT_X931,
  32     OPT_SIGN, OPT_VERIFY, OPT_REV, OPT_ENCRYPT, OPT_DECRYPT,
  33     OPT_PUBIN, OPT_CERTIN, OPT_INKEY, OPT_PASSIN, OPT_KEYFORM,
  34     OPT_R_ENUM, OPT_PROV_ENUM
  35 } OPTION_CHOICE;
  36
  37 const OPTIONS rsautl_options[] = {
  38     OPT_SECTION("General"),
  39     {"help", OPT_HELP, '-', "Display this summary"},
  40     {"sign", OPT_SIGN, '-', "Sign with private key"},
  41     {"verify", OPT_VERIFY, '-', "Verify with public key"},
  42     {"encrypt", OPT_ENCRYPT, '-', "Encrypt with public key"},
  43     {"decrypt", OPT_DECRYPT, '-', "Decrypt with private key"},
  44 #ifndef OPENSSL_NO_ENGINE
  45     {"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"},
  46 #endif
  47
  48     OPT_SECTION("Input"),
  49     {"in", OPT_IN, '<', "Input file"},
  50     {"inkey", OPT_INKEY, 's', "Input key"},
  51     {"keyform", OPT_KEYFORM, 'E', "Private key format (ENGINE, other values ignored)"},
  52     {"pubin", OPT_PUBIN, '-', "Input is an RSA public"},
  53     {"certin", OPT_CERTIN, '-', "Input is a cert carrying an RSA public key"},
  54     {"rev", OPT_REV, '-', "Reverse the order of the input buffer"},
  55     {"passin", OPT_PASSIN, 's', "Input file pass phrase source"},
  56
  57     OPT_SECTION("Output"),
  58     {"out", OPT_OUT, '>', "Output file"},
  59     {"ssl", OPT_SSL, '-', "Use SSL v2 padding"},
  60     {"raw", OPT_RSA_RAW, '-', "Use no padding"},
  61     {"pkcs", OPT_PKCS, '-', "Use PKCS#1 v1.5 padding (default)"},
  62     {"x931", OPT_X931, '-', "Use ANSI X9.31 padding"},
  63     {"oaep", OPT_OAEP, '-', "Use PKCS#1 OAEP"},
  64     {"asn1parse", OPT_ASN1PARSE, '-',
  65      "Run output through asn1parse; useful with -verify"},
  66     {"hexdump", OPT_HEXDUMP, '-', "Hex dump output"},
  67
  68     OPT_R_OPTIONS,
  69     OPT_PROV_OPTIONS,
  70     {NULL}
  71 };
  72
  73 int rsautl_main(int argc, char **argv)
  74 {
  75     BIO *in = NULL, *out = NULL;
  76     ENGINE *e = NULL;
  77     EVP_PKEY *pkey = NULL;
  78     EVP_PKEY_CTX *ctx = NULL;
  79     X509 *x;
  80     char *infile = NULL, *outfile = NULL, *keyfile = NULL;
  81     char *passinarg = NULL, *passin = NULL, *prog;
  82     char rsa_mode = RSA_VERIFY, key_type = KEY_PRIVKEY;
  83     unsigned char *rsa_in = NULL, *rsa_out = NULL, pad = RSA_PKCS1_PADDING;
  84     size_t rsa_inlen, rsa_outlen = 0;
  85     int keyformat = FORMAT_PEM, keysize, ret = 1, rv;
  86     int hexdump = 0, asn1parse = 0, need_priv = 0, rev = 0;
  87     OPTION_CHOICE o;
  88
  89     prog = opt_init(argc, argv, rsautl_options);
  90     while ((o = opt_next()) != OPT_EOF) {
  91         switch (o) {
  92         case OPT_EOF:
  93         case OPT_ERR:
  94  opthelp:
  95             BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
  96             goto end;
  97         case OPT_HELP:
  98             opt_help(rsautl_options);
  99             ret = 0;
 100             goto end;
 101         case OPT_KEYFORM:
 102             if (!opt_format(opt_arg(), OPT_FMT_ANY, &keyformat))
 103                 goto opthelp;
 104             break;
 105         case OPT_IN:
 106             infile = opt_arg();
 107             break;
 108         case OPT_OUT:
 109             outfile = opt_arg();
 110             break;
 111         case OPT_ENGINE:
 112             e = setup_engine(opt_arg(), 0);
 113             break;
 114         case OPT_ASN1PARSE:
 115             asn1parse = 1;
 116             break;
 117         case OPT_HEXDUMP:
 118             hexdump = 1;
 119             break;
 120         case OPT_RSA_RAW:
 121             pad = RSA_NO_PADDING;
 122             break;
 123         case OPT_OAEP:
 124             pad = RSA_PKCS1_OAEP_PADDING;
 125             break;
 126         case OPT_SSL:
 127             pad = RSA_SSLV23_PADDING;
 128             break;
 129         case OPT_PKCS:
 130             pad = RSA_PKCS1_PADDING;
 131             break;
 132         case OPT_X931:
 133             pad = RSA_X931_PADDING;
 134             break;
 135         case OPT_SIGN:
 136             rsa_mode = RSA_SIGN;
 137             need_priv = 1;
 138             break;
 139         case OPT_VERIFY:
 140             rsa_mode = RSA_VERIFY;
 141             break;
 142         case OPT_REV:
 143             rev = 1;
 144             break;
 145         case OPT_ENCRYPT:
 146             rsa_mode = RSA_ENCRYPT;
 147             break;
 148         case OPT_DECRYPT:
 149             rsa_mode = RSA_DECRYPT;
 150             need_priv = 1;
 151             break;
 152         case OPT_PUBIN:
 153             key_type = KEY_PUBKEY;
 154             break;
 155         case OPT_CERTIN:
 156             key_type = KEY_CERT;
 157             break;
 158         case OPT_INKEY:
 159             keyfile = opt_arg();
 160             break;
 161         case OPT_PASSIN:
 162             passinarg = opt_arg();
 163             break;
 164         case OPT_R_CASES:
 165             if (!opt_rand(o))
 166                 goto end;
 167             break;
 168         case OPT_PROV_CASES:
 169             if (!opt_provider(o))
 170                 goto end;
 171             break;
 172         }
 173     }
 174
 175     /* No extra arguments. */
 176     argc = opt_num_rest();
 177     if (argc != 0)
 178         goto opthelp;
 179
 180     app_RAND_load();
 181     if (need_priv && (key_type != KEY_PRIVKEY)) {
 182         BIO_printf(bio_err, "A private key is needed for this operation\n");
 183         goto end;
 184     }
 185
 186     if (!app_passwd(passinarg, NULL, &passin, NULL)) {
 187         BIO_printf(bio_err, "Error getting password\n");
 188         goto end;
 189     }
 190
 191     switch (key_type) {
 192     case KEY_PRIVKEY:
 193         pkey = load_key(keyfile, keyformat, 0, passin, e, "private key");
 194         break;
 195
 196     case KEY_PUBKEY:
 197         pkey = load_pubkey(keyfile, keyformat, 0, NULL, e, "public key");
 198         break;
 199
 200     case KEY_CERT:
 201         x = load_cert(keyfile, "Certificate");
 202         if (x) {
 203             pkey = X509_get_pubkey(x);
 204             X509_free(x);
 205         }
 206         break;
 207     }
 208
 209     if (pkey == NULL)
 210         return 1;
 211
 212     in = bio_open_default(infile, 'r', FORMAT_BINARY);
 213     if (in == NULL)
 214         goto end;
 215     out = bio_open_default(outfile, 'w', FORMAT_BINARY);
 216     if (out == NULL)
 217         goto end;
 218
 219     keysize = EVP_PKEY_size(pkey);
 220
 221     rsa_in = app_malloc(keysize * 2, "hold rsa key");
 222     rsa_out = app_malloc(keysize, "output rsa key");
 223     rsa_outlen = keysize;
 224
 225     /* Read the input data */
 226     rv = BIO_read(in, rsa_in, keysize * 2);
 227     if (rv < 0) {
 228         BIO_printf(bio_err, "Error reading input Data\n");
 229         goto end;
 230     }
 231     rsa_inlen = rv;
 232     if (rev) {
 233         size_t i;
 234         unsigned char ctmp;
 235
 236         for (i = 0; i < rsa_inlen / 2; i++) {
 237             ctmp = rsa_in[i];
 238             rsa_in[i] = rsa_in[rsa_inlen - 1 - i];
 239             rsa_in[rsa_inlen - 1 - i] = ctmp;
 240         }
 241     }
 242
 243     if ((ctx = EVP_PKEY_CTX_new_from_pkey(NULL, pkey, NULL)) == NULL)
 244         goto end;
 245
 246     switch (rsa_mode) {
 247     case RSA_VERIFY:
 248         rv = EVP_PKEY_verify_recover_init(ctx)
 249             && EVP_PKEY_CTX_set_rsa_padding(ctx, pad)
 250             && EVP_PKEY_verify_recover(ctx, rsa_out, &rsa_outlen,
 251                                        rsa_in, rsa_inlen);
 252         break;
 253     case RSA_SIGN:
 254         rv = EVP_PKEY_sign_init(ctx)
 255             && EVP_PKEY_CTX_set_rsa_padding(ctx, pad)
 256             && EVP_PKEY_sign(ctx, rsa_out, &rsa_outlen, rsa_in, rsa_inlen);
 257         break;
 258     case RSA_ENCRYPT:
 259         rv = EVP_PKEY_encrypt_init(ctx)
 260             && EVP_PKEY_CTX_set_rsa_padding(ctx, pad)
 261             && EVP_PKEY_encrypt(ctx, rsa_out, &rsa_outlen, rsa_in, rsa_inlen);
 262         break;
 263     case RSA_DECRYPT:
 264         rv = EVP_PKEY_decrypt_init(ctx)
 265             && EVP_PKEY_CTX_set_rsa_padding(ctx, pad)
 266             && EVP_PKEY_decrypt(ctx, rsa_out, &rsa_outlen, rsa_in, rsa_inlen);
 267         break;
 268     }
 269
 270     if (!rv) {
 271         BIO_printf(bio_err, "RSA operation error\n");
 272         ERR_print_errors(bio_err);
 273         goto end;
 274     }
 275     ret = 0;
 276     if (asn1parse) {
 277         if (!ASN1_parse_dump(out, rsa_out, rsa_outlen, 1, -1)) {
 278             ERR_print_errors(bio_err);
 279         }
 280     } else if (hexdump) {
 281         BIO_dump(out, (char *)rsa_out, rsa_outlen);
 282     } else {
 283         BIO_write(out, rsa_out, rsa_outlen);
 284     }
 285  end:
 286     EVP_PKEY_CTX_free(ctx);
 287     EVP_PKEY_free(pkey);
 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 }