1 /* rsautl.c */ 2 /* Written by Dr Stephen N Henson (shenson@bigfoot.com) 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 #include "apps.h" 59 #include <string.h> 60 #include <openssl/err.h> 61 #include <openssl/pem.h> 62 63 #define RSA_SIGN 1 64 #define RSA_VERIFY 2 65 #define RSA_ENCRYPT 3 66 #define RSA_DECRYPT 4 67 68 #define KEY_PRIVKEY 1 69 #define KEY_PUBKEY 2 70 #define KEY_CERT 3 71 72 static void usage(void); 73 74 #undef PROG 75 76 #define PROG rsautl_main 77 78 int MAIN(int argc, char **); 79 80 int MAIN(int argc, char **argv) 81 { 82 BIO *in = NULL, *out = NULL; 83 char *infile = NULL, *outfile = NULL; 84 char *keyfile = NULL; 85 char rsa_mode = RSA_VERIFY, key_type = KEY_PRIVKEY; 86 int keyform = FORMAT_PEM; 87 char need_priv = 0, badarg = 0, rev = 0; 88 char hexdump = 0, asn1parse = 0; 89 X509 *x; 90 EVP_PKEY *pkey = NULL; 91 RSA *rsa = NULL; 92 unsigned char *rsa_in = NULL, *rsa_out = NULL, pad; 93 int rsa_inlen, rsa_outlen = 0; 94 int keysize; 95 96 int ret = 1; 97 98 argc--; 99 argv++; 100 101 if(!bio_err) bio_err = BIO_new_fp(stderr, BIO_NOCLOSE); 102 ERR_load_crypto_strings(); 103 OpenSSL_add_all_algorithms(); 104 pad = RSA_PKCS1_PADDING; 105 106 while(argc >= 1) 107 { 108 if (!strcmp(*argv,"-in")) { 109 if (--argc < 1) badarg = 1; 110 infile= *(++argv); 111 } else if (!strcmp(*argv,"-out")) { 112 if (--argc < 1) badarg = 1; 113 outfile= *(++argv); 114 } else if(!strcmp(*argv, "-inkey")) { 115 if (--argc < 1) badarg = 1; 116 keyfile = *(++argv); 117 } else if(!strcmp(*argv, "-pubin")) { 118 key_type = KEY_PUBKEY; 119 } else if(!strcmp(*argv, "-certin")) { 120 key_type = KEY_CERT; 121 } 122 else if(!strcmp(*argv, "-asn1parse")) asn1parse = 1; 123 else if(!strcmp(*argv, "-hexdump")) hexdump = 1; 124 else if(!strcmp(*argv, "-raw")) pad = RSA_NO_PADDING; 125 else if(!strcmp(*argv, "-oaep")) pad = RSA_PKCS1_OAEP_PADDING; 126 else if(!strcmp(*argv, "-ssl")) pad = RSA_SSLV23_PADDING; 127 else if(!strcmp(*argv, "-pkcs")) pad = RSA_PKCS1_PADDING; 128 else if(!strcmp(*argv, "-sign")) { 129 rsa_mode = RSA_SIGN; 130 need_priv = 1; 131 } else if(!strcmp(*argv, "-verify")) rsa_mode = RSA_VERIFY; 132 else if(!strcmp(*argv, "-rev")) rev = 1; 133 else if(!strcmp(*argv, "-encrypt")) rsa_mode = RSA_ENCRYPT; 134 else if(!strcmp(*argv, "-decrypt")) { 135 rsa_mode = RSA_DECRYPT; 136 need_priv = 1; 137 } else badarg = 1; 138 if(badarg) { 139 usage(); 140 goto end; 141 } 142 argc--; 143 argv++; 144 } 145 146 if(need_priv && (key_type != KEY_PRIVKEY)) { 147 BIO_printf(bio_err, "A private key is needed for this operation\n"); 148 goto end; 149 } 150 151 /* FIXME: seed PRNG only if needed */ 152 app_RAND_load_file(NULL, bio_err, 0); 153 154 switch(key_type) { 155 case KEY_PRIVKEY: 156 pkey = load_key(bio_err, keyfile, keyform, NULL); 157 break; 158 159 case KEY_PUBKEY: 160 pkey = load_pubkey(bio_err, keyfile, keyform); 161 break; 162 163 case KEY_CERT: 164 x = load_cert(bio_err, keyfile, keyform); 165 if(x) { 166 pkey = X509_get_pubkey(x); 167 X509_free(x); 168 } 169 break; 170 } 171 172 if(!pkey) { 173 BIO_printf(bio_err, "Error loading key\n"); 174 return 1; 175 } 176 177 rsa = EVP_PKEY_get1_RSA(pkey); 178 EVP_PKEY_free(pkey); 179 180 if(!rsa) { 181 BIO_printf(bio_err, "Error getting RSA key\n"); 182 ERR_print_errors(bio_err); 183 goto end; 184 } 185 186 187 if(infile) { 188 if(!(in = BIO_new_file(infile, "rb"))) { 189 BIO_printf(bio_err, "Error Reading Input File\n"); 190 ERR_print_errors(bio_err); 191 goto end; 192 } 193 } else in = BIO_new_fp(stdin, BIO_NOCLOSE); 194 195 if(outfile) { 196 if(!(out = BIO_new_file(outfile, "wb"))) { 197 BIO_printf(bio_err, "Error Reading Output File\n"); 198 ERR_print_errors(bio_err); 199 goto end; 200 } 201 } else { 202 out = BIO_new_fp(stdout, BIO_NOCLOSE); 203 #ifdef VMS 204 { 205 BIO *tmpbio = BIO_new(BIO_f_linebuffer()); 206 out = BIO_push(tmpbio, out); 207 } 208 #endif 209 } 210 211 keysize = RSA_size(rsa); 212 213 rsa_in = OPENSSL_malloc(keysize * 2); 214 rsa_out = OPENSSL_malloc(keysize); 215 216 /* Read the input data */ 217 rsa_inlen = BIO_read(in, rsa_in, keysize * 2); 218 if(rsa_inlen <= 0) { 219 BIO_printf(bio_err, "Error reading input Data\n"); 220 exit(1); 221 } 222 if(rev) { 223 int i; 224 unsigned char ctmp; 225 for(i = 0; i < rsa_inlen/2; i++) { 226 ctmp = rsa_in[i]; 227 rsa_in[i] = rsa_in[rsa_inlen - 1 - i]; 228 rsa_in[rsa_inlen - 1 - i] = ctmp; 229 } 230 } 231 switch(rsa_mode) { 232 233 case RSA_VERIFY: 234 rsa_outlen = RSA_public_decrypt(rsa_inlen, rsa_in, rsa_out, rsa, pad); 235 break; 236 237 case RSA_SIGN: 238 rsa_outlen = RSA_private_encrypt(rsa_inlen, rsa_in, rsa_out, rsa, pad); 239 break; 240 241 case RSA_ENCRYPT: 242 rsa_outlen = RSA_public_encrypt(rsa_inlen, rsa_in, rsa_out, rsa, pad); 243 break; 244 245 case RSA_DECRYPT: 246 rsa_outlen = RSA_private_decrypt(rsa_inlen, rsa_in, rsa_out, rsa, pad); 247 break; 248 249 } 250 251 if(rsa_outlen <= 0) { 252 BIO_printf(bio_err, "RSA operation error\n"); 253 ERR_print_errors(bio_err); 254 goto end; 255 } 256 ret = 0; 257 if(asn1parse) { 258 if(!ASN1_parse_dump(out, rsa_out, rsa_outlen, 1, -1)) { 259 ERR_print_errors(bio_err); 260 } 261 } else if(hexdump) BIO_dump(out, (char *)rsa_out, rsa_outlen); 262 else BIO_write(out, rsa_out, rsa_outlen); 263 end: 264 RSA_free(rsa); 265 BIO_free(in); 266 BIO_free_all(out); 267 if(rsa_in) OPENSSL_free(rsa_in); 268 if(rsa_out) OPENSSL_free(rsa_out); 269 return ret; 270 } 271 272 static void usage() 273 { 274 BIO_printf(bio_err, "Usage: rsautl [options]\n"); 275 BIO_printf(bio_err, "-in file input file\n"); 276 BIO_printf(bio_err, "-out file output file\n"); 277 BIO_printf(bio_err, "-inkey file input key\n"); 278 BIO_printf(bio_err, "-pubin input is an RSA public\n"); 279 BIO_printf(bio_err, "-certin input is a certificate carrying an RSA public key\n"); 280 BIO_printf(bio_err, "-ssl use SSL v2 padding\n"); 281 BIO_printf(bio_err, "-raw use no padding\n"); 282 BIO_printf(bio_err, "-pkcs use PKCS#1 v1.5 padding (default)\n"); 283 BIO_printf(bio_err, "-oaep use PKCS#1 OAEP\n"); 284 BIO_printf(bio_err, "-sign sign with private key\n"); 285 BIO_printf(bio_err, "-verify verify with public key\n"); 286 BIO_printf(bio_err, "-encrypt encrypt with public key\n"); 287 BIO_printf(bio_err, "-decrypt decrypt with private key\n"); 288 BIO_printf(bio_err, "-hexdump hex dump output\n"); 289 } 290 291