1 /* $OpenBSD: rsautl.c,v 1.9 2015/10/17 07:51:10 semarie Exp $ */ 2 /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL 3 * project 2000. 4 */ 5 /* ==================================================================== 6 * Copyright (c) 2000 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 59 #include <openssl/opensslconf.h> 60 61 62 #include <string.h> 63 64 #include "apps.h" 65 66 #include <openssl/err.h> 67 #include <openssl/pem.h> 68 #include <openssl/rsa.h> 69 70 #define RSA_SIGN 1 71 #define RSA_VERIFY 2 72 #define RSA_ENCRYPT 3 73 #define RSA_DECRYPT 4 74 75 #define KEY_PRIVKEY 1 76 #define KEY_PUBKEY 2 77 #define KEY_CERT 3 78 79 static void usage(void); 80 81 int 82 rsautl_main(int argc, char **argv) 83 { 84 BIO *in = NULL, *out = NULL; 85 char *infile = NULL, *outfile = NULL; 86 char *keyfile = NULL; 87 char rsa_mode = RSA_VERIFY, key_type = KEY_PRIVKEY; 88 int keyform = FORMAT_PEM; 89 char need_priv = 0, badarg = 0, rev = 0; 90 char hexdump = 0, asn1parse = 0; 91 X509 *x; 92 EVP_PKEY *pkey = NULL; 93 RSA *rsa = NULL; 94 unsigned char *rsa_in = NULL, *rsa_out = NULL, pad; 95 char *passargin = NULL, *passin = NULL; 96 int rsa_inlen, rsa_outlen = 0; 97 int keysize; 98 99 int ret = 1; 100 101 if (single_execution) { 102 if (pledge("stdio rpath wpath cpath tty", NULL) == -1) { 103 perror("pledge"); 104 exit(1); 105 } 106 } 107 108 argc--; 109 argv++; 110 111 pad = RSA_PKCS1_PADDING; 112 113 while (argc >= 1) { 114 if (!strcmp(*argv, "-in")) { 115 if (--argc < 1) 116 badarg = 1; 117 else 118 infile = *(++argv); 119 } else if (!strcmp(*argv, "-out")) { 120 if (--argc < 1) 121 badarg = 1; 122 else 123 outfile = *(++argv); 124 } else if (!strcmp(*argv, "-inkey")) { 125 if (--argc < 1) 126 badarg = 1; 127 else 128 keyfile = *(++argv); 129 } else if (!strcmp(*argv, "-passin")) { 130 if (--argc < 1) 131 badarg = 1; 132 else 133 passargin = *(++argv); 134 } else if (strcmp(*argv, "-keyform") == 0) { 135 if (--argc < 1) 136 badarg = 1; 137 else 138 keyform = str2fmt(*(++argv)); 139 } else if (!strcmp(*argv, "-pubin")) { 140 key_type = KEY_PUBKEY; 141 } else if (!strcmp(*argv, "-certin")) { 142 key_type = KEY_CERT; 143 } else if (!strcmp(*argv, "-asn1parse")) 144 asn1parse = 1; 145 else if (!strcmp(*argv, "-hexdump")) 146 hexdump = 1; 147 else if (!strcmp(*argv, "-raw")) 148 pad = RSA_NO_PADDING; 149 else if (!strcmp(*argv, "-oaep")) 150 pad = RSA_PKCS1_OAEP_PADDING; 151 else if (!strcmp(*argv, "-ssl")) 152 pad = RSA_SSLV23_PADDING; 153 else if (!strcmp(*argv, "-pkcs")) 154 pad = RSA_PKCS1_PADDING; 155 else if (!strcmp(*argv, "-x931")) 156 pad = RSA_X931_PADDING; 157 else if (!strcmp(*argv, "-sign")) { 158 rsa_mode = RSA_SIGN; 159 need_priv = 1; 160 } else if (!strcmp(*argv, "-verify")) 161 rsa_mode = RSA_VERIFY; 162 else if (!strcmp(*argv, "-rev")) 163 rev = 1; 164 else if (!strcmp(*argv, "-encrypt")) 165 rsa_mode = RSA_ENCRYPT; 166 else if (!strcmp(*argv, "-decrypt")) { 167 rsa_mode = RSA_DECRYPT; 168 need_priv = 1; 169 } else 170 badarg = 1; 171 if (badarg) { 172 usage(); 173 goto end; 174 } 175 argc--; 176 argv++; 177 } 178 179 if (need_priv && (key_type != KEY_PRIVKEY)) { 180 BIO_printf(bio_err, "A private key is needed for this operation\n"); 181 goto end; 182 } 183 if (!app_passwd(bio_err, passargin, NULL, &passin, NULL)) { 184 BIO_printf(bio_err, "Error getting password\n"); 185 goto end; 186 } 187 188 switch (key_type) { 189 case KEY_PRIVKEY: 190 pkey = load_key(bio_err, keyfile, keyform, 0, 191 passin, "Private Key"); 192 break; 193 194 case KEY_PUBKEY: 195 pkey = load_pubkey(bio_err, keyfile, keyform, 0, 196 NULL, "Public Key"); 197 break; 198 199 case KEY_CERT: 200 x = load_cert(bio_err, keyfile, keyform, 201 NULL, "Certificate"); 202 if (x) { 203 pkey = X509_get_pubkey(x); 204 X509_free(x); 205 } 206 break; 207 } 208 209 if (!pkey) 210 goto end; 211 212 rsa = EVP_PKEY_get1_RSA(pkey); 213 EVP_PKEY_free(pkey); 214 215 if (!rsa) { 216 BIO_printf(bio_err, "Error getting RSA key\n"); 217 ERR_print_errors(bio_err); 218 goto end; 219 } 220 if (infile) { 221 if (!(in = BIO_new_file(infile, "rb"))) { 222 BIO_printf(bio_err, "Error Reading Input File\n"); 223 ERR_print_errors(bio_err); 224 goto end; 225 } 226 } else 227 in = BIO_new_fp(stdin, BIO_NOCLOSE); 228 229 if (outfile) { 230 if (!(out = BIO_new_file(outfile, "wb"))) { 231 BIO_printf(bio_err, "Error Reading Output File\n"); 232 ERR_print_errors(bio_err); 233 goto end; 234 } 235 } else { 236 out = BIO_new_fp(stdout, BIO_NOCLOSE); 237 } 238 239 keysize = RSA_size(rsa); 240 241 rsa_in = reallocarray(NULL, keysize, 2); 242 if (rsa_in == NULL) { 243 BIO_printf(bio_err, "Error allocating memory for input data\n"); 244 exit(1); 245 } 246 rsa_out = malloc(keysize); 247 if (rsa_out == NULL) { 248 BIO_printf(bio_err, "Error allocating memory for output data\n"); 249 exit(1); 250 } 251 252 /* Read the input data */ 253 rsa_inlen = BIO_read(in, rsa_in, keysize * 2); 254 if (rsa_inlen <= 0) { 255 BIO_printf(bio_err, "Error reading input Data\n"); 256 exit(1); 257 } 258 if (rev) { 259 int i; 260 unsigned char ctmp; 261 for (i = 0; i < rsa_inlen / 2; i++) { 262 ctmp = rsa_in[i]; 263 rsa_in[i] = rsa_in[rsa_inlen - 1 - i]; 264 rsa_in[rsa_inlen - 1 - i] = ctmp; 265 } 266 } 267 switch (rsa_mode) { 268 269 case RSA_VERIFY: 270 rsa_outlen = RSA_public_decrypt(rsa_inlen, rsa_in, rsa_out, rsa, pad); 271 break; 272 273 case RSA_SIGN: 274 rsa_outlen = RSA_private_encrypt(rsa_inlen, rsa_in, rsa_out, rsa, pad); 275 break; 276 277 case RSA_ENCRYPT: 278 rsa_outlen = RSA_public_encrypt(rsa_inlen, rsa_in, rsa_out, rsa, pad); 279 break; 280 281 case RSA_DECRYPT: 282 rsa_outlen = RSA_private_decrypt(rsa_inlen, rsa_in, rsa_out, rsa, pad); 283 break; 284 285 } 286 287 if (rsa_outlen <= 0) { 288 BIO_printf(bio_err, "RSA operation error\n"); 289 ERR_print_errors(bio_err); 290 goto end; 291 } 292 ret = 0; 293 if (asn1parse) { 294 if (!ASN1_parse_dump(out, rsa_out, rsa_outlen, 1, -1)) { 295 ERR_print_errors(bio_err); 296 } 297 } else if (hexdump) 298 BIO_dump(out, (char *) rsa_out, rsa_outlen); 299 else 300 BIO_write(out, rsa_out, rsa_outlen); 301 302 end: 303 RSA_free(rsa); 304 BIO_free(in); 305 BIO_free_all(out); 306 free(rsa_in); 307 free(rsa_out); 308 free(passin); 309 310 return ret; 311 } 312 313 static void 314 usage() 315 { 316 BIO_printf(bio_err, "Usage: rsautl [options]\n"); 317 BIO_printf(bio_err, "-in file input file\n"); 318 BIO_printf(bio_err, "-out file output file\n"); 319 BIO_printf(bio_err, "-inkey file input key\n"); 320 BIO_printf(bio_err, "-keyform arg private key format - default PEM\n"); 321 BIO_printf(bio_err, "-pubin input is an RSA public\n"); 322 BIO_printf(bio_err, "-certin input is a certificate carrying an RSA public key\n"); 323 BIO_printf(bio_err, "-ssl use SSL v2 padding\n"); 324 BIO_printf(bio_err, "-raw use no padding\n"); 325 BIO_printf(bio_err, "-pkcs use PKCS#1 v1.5 padding (default)\n"); 326 BIO_printf(bio_err, "-oaep use PKCS#1 OAEP\n"); 327 BIO_printf(bio_err, "-sign sign with private key\n"); 328 BIO_printf(bio_err, "-verify verify with public key\n"); 329 BIO_printf(bio_err, "-encrypt encrypt with public key\n"); 330 BIO_printf(bio_err, "-decrypt decrypt with private key\n"); 331 BIO_printf(bio_err, "-hexdump hex dump output\n"); 332 } 333