1 /* $OpenBSD: rsautl.c,v 1.13 2018/02/07 05:47:55 jsing 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 cpath wpath rpath 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, "-pkcs")) 152 pad = RSA_PKCS1_PADDING; 153 else if (!strcmp(*argv, "-x931")) 154 pad = RSA_X931_PADDING; 155 else if (!strcmp(*argv, "-sign")) { 156 rsa_mode = RSA_SIGN; 157 need_priv = 1; 158 } else if (!strcmp(*argv, "-verify")) 159 rsa_mode = RSA_VERIFY; 160 else if (!strcmp(*argv, "-rev")) 161 rev = 1; 162 else if (!strcmp(*argv, "-encrypt")) 163 rsa_mode = RSA_ENCRYPT; 164 else if (!strcmp(*argv, "-decrypt")) { 165 rsa_mode = RSA_DECRYPT; 166 need_priv = 1; 167 } else 168 badarg = 1; 169 if (badarg) { 170 usage(); 171 goto end; 172 } 173 argc--; 174 argv++; 175 } 176 177 if (need_priv && (key_type != KEY_PRIVKEY)) { 178 BIO_printf(bio_err, "A private key is needed for this operation\n"); 179 goto end; 180 } 181 if (!app_passwd(bio_err, passargin, NULL, &passin, NULL)) { 182 BIO_printf(bio_err, "Error getting password\n"); 183 goto end; 184 } 185 186 switch (key_type) { 187 case KEY_PRIVKEY: 188 pkey = load_key(bio_err, keyfile, keyform, 0, 189 passin, "Private Key"); 190 break; 191 192 case KEY_PUBKEY: 193 pkey = load_pubkey(bio_err, keyfile, keyform, 0, 194 NULL, "Public Key"); 195 break; 196 197 case KEY_CERT: 198 x = load_cert(bio_err, keyfile, keyform, 199 NULL, "Certificate"); 200 if (x) { 201 pkey = X509_get_pubkey(x); 202 X509_free(x); 203 } 204 break; 205 } 206 207 if (!pkey) 208 goto end; 209 210 rsa = EVP_PKEY_get1_RSA(pkey); 211 EVP_PKEY_free(pkey); 212 213 if (!rsa) { 214 BIO_printf(bio_err, "Error getting RSA key\n"); 215 ERR_print_errors(bio_err); 216 goto end; 217 } 218 if (infile) { 219 if (!(in = BIO_new_file(infile, "rb"))) { 220 BIO_printf(bio_err, "Error Reading Input File\n"); 221 ERR_print_errors(bio_err); 222 goto end; 223 } 224 } else 225 in = BIO_new_fp(stdin, BIO_NOCLOSE); 226 227 if (outfile) { 228 if (!(out = BIO_new_file(outfile, "wb"))) { 229 BIO_printf(bio_err, "Error Reading Output File\n"); 230 ERR_print_errors(bio_err); 231 goto end; 232 } 233 } else { 234 out = BIO_new_fp(stdout, BIO_NOCLOSE); 235 } 236 237 keysize = RSA_size(rsa); 238 239 rsa_in = reallocarray(NULL, keysize, 2); 240 if (rsa_in == NULL) { 241 BIO_printf(bio_err, "Error allocating memory for input data\n"); 242 exit(1); 243 } 244 rsa_out = malloc(keysize); 245 if (rsa_out == NULL) { 246 BIO_printf(bio_err, "Error allocating memory for output data\n"); 247 exit(1); 248 } 249 250 /* Read the input data */ 251 rsa_inlen = BIO_read(in, rsa_in, keysize * 2); 252 if (rsa_inlen <= 0) { 253 BIO_printf(bio_err, "Error reading input Data\n"); 254 exit(1); 255 } 256 if (rev) { 257 int i; 258 unsigned char ctmp; 259 for (i = 0; i < rsa_inlen / 2; i++) { 260 ctmp = rsa_in[i]; 261 rsa_in[i] = rsa_in[rsa_inlen - 1 - i]; 262 rsa_in[rsa_inlen - 1 - i] = ctmp; 263 } 264 } 265 switch (rsa_mode) { 266 267 case RSA_VERIFY: 268 rsa_outlen = RSA_public_decrypt(rsa_inlen, rsa_in, rsa_out, rsa, pad); 269 break; 270 271 case RSA_SIGN: 272 rsa_outlen = RSA_private_encrypt(rsa_inlen, rsa_in, rsa_out, rsa, pad); 273 break; 274 275 case RSA_ENCRYPT: 276 rsa_outlen = RSA_public_encrypt(rsa_inlen, rsa_in, rsa_out, rsa, pad); 277 break; 278 279 case RSA_DECRYPT: 280 rsa_outlen = RSA_private_decrypt(rsa_inlen, rsa_in, rsa_out, rsa, pad); 281 break; 282 283 } 284 285 if (rsa_outlen <= 0) { 286 BIO_printf(bio_err, "RSA operation error\n"); 287 ERR_print_errors(bio_err); 288 goto end; 289 } 290 ret = 0; 291 if (asn1parse) { 292 if (!ASN1_parse_dump(out, rsa_out, rsa_outlen, 1, -1)) { 293 ERR_print_errors(bio_err); 294 } 295 } else if (hexdump) 296 BIO_dump(out, (char *) rsa_out, rsa_outlen); 297 else 298 BIO_write(out, rsa_out, rsa_outlen); 299 300 end: 301 RSA_free(rsa); 302 BIO_free(in); 303 BIO_free_all(out); 304 free(rsa_in); 305 free(rsa_out); 306 free(passin); 307 308 return ret; 309 } 310 311 static void 312 usage() 313 { 314 BIO_printf(bio_err, "Usage: rsautl [options]\n"); 315 BIO_printf(bio_err, "-in file input file\n"); 316 BIO_printf(bio_err, "-out file output file\n"); 317 BIO_printf(bio_err, "-inkey file input key\n"); 318 BIO_printf(bio_err, "-keyform arg private key format - default PEM\n"); 319 BIO_printf(bio_err, "-pubin input is an RSA public\n"); 320 BIO_printf(bio_err, "-certin input is a certificate carrying an RSA public key\n"); 321 BIO_printf(bio_err, "-ssl use SSL v2 padding\n"); 322 BIO_printf(bio_err, "-raw use no padding\n"); 323 BIO_printf(bio_err, "-pkcs use PKCS#1 v1.5 padding (default)\n"); 324 BIO_printf(bio_err, "-oaep use PKCS#1 OAEP\n"); 325 BIO_printf(bio_err, "-sign sign with private key\n"); 326 BIO_printf(bio_err, "-verify verify with public key\n"); 327 BIO_printf(bio_err, "-encrypt encrypt with public key\n"); 328 BIO_printf(bio_err, "-decrypt decrypt with private key\n"); 329 BIO_printf(bio_err, "-hexdump hex dump output\n"); 330 } 331