lib/hcrypto/test_rsa.c

   1 /*
   2  * Copyright (c) 2006 - 2007 Kungliga Tekniska Högskolan
   3  * (Royal Institute of Technology, Stockholm, Sweden).
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  *
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  *
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  *
  17  * 3. Neither the name of the Institute nor the names of its contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  */
  33
  34 #include <config.h>
  35 #include <roken.h>
  36 #include <getarg.h>
  37
  38 #include <engine.h>
  39 #include <evp.h>
  40
  41 /*
  42  *
  43  */
  44
  45 static int version_flag;
  46 static int help_flag;
  47 static int time_keygen;
  48 static char *time_key;
  49 static int key_blinding = 1;
  50 static char *rsa_key;
  51 static char *id_flag;
  52 static int loops = 1;
  53
  54 static struct getargs args[] = {
  55     { "loops",          0,      arg_integer,    &loops,
  56       "number of loops",        "loops" },
  57     { "id",             0,      arg_string,     &id_flag,
  58       "selects the engine id",  "engine-id" },
  59     { "time-keygen",    0,      arg_flag,       &time_keygen,
  60       "time rsa generation", NULL },
  61     { "time-key",       0,      arg_string,     &time_key,
  62       "rsa key file", NULL },
  63     { "key-blinding",   0,      arg_negative_flag, &key_blinding,
  64       "key blinding", NULL },
  65     { "key",    0,      arg_string,     &rsa_key,
  66       "rsa key file", NULL },
  67     { "version",        0,      arg_flag,       &version_flag,
  68       "print version", NULL },
  69     { "help",           0,      arg_flag,       &help_flag,
  70       NULL,     NULL }
  71 };
  72
  73 /*
  74  *
  75  */
  76
  77 static void
  78 check_rsa(const unsigned char *in, size_t len, RSA *rsa, int padding)
  79 {
  80     unsigned char *res, *res2;
  81     unsigned int len2;
  82     int keylen;
  83
  84     res = malloc(RSA_size(rsa));
  85     if (res == NULL)
  86         errx(1, "res: ENOMEM");
  87
  88     res2 = malloc(RSA_size(rsa));
  89     if (res2 == NULL)
  90         errx(1, "res2: ENOMEM");
  91
  92     /* signing */
  93
  94     keylen = RSA_private_encrypt(len, in, res, rsa, padding);
  95     if (keylen <= 0)
  96         errx(1, "failed to private encrypt: %d %d", (int)len, (int)keylen);
  97
  98     if (keylen > RSA_size(rsa))
  99         errx(1, "keylen > RSA_size(rsa)");
 100
 101     keylen = RSA_public_decrypt(keylen, res, res2, rsa, padding);
 102     if (keylen <= 0)
 103         errx(1, "failed to public decrypt: %d", (int)keylen);
 104
 105     if (keylen != len)
 106         errx(1, "output buffer not same length: %d", (int)keylen);
 107
 108     if (memcmp(res2, in, len) != 0)
 109         errx(1, "string not the same after decryption");
 110
 111     /* encryption */
 112
 113     keylen = RSA_public_encrypt(len, in, res, rsa, padding);
 114     if (keylen <= 0)
 115         errx(1, "failed to public encrypt: %d", (int)keylen);
 116
 117     if (keylen > RSA_size(rsa))
 118         errx(1, "keylen > RSA_size(rsa)");
 119
 120     keylen = RSA_private_decrypt(keylen, res, res2, rsa, padding);
 121     if (keylen <= 0)
 122         errx(1, "failed to private decrypt: %d", (int)keylen);
 123
 124     if (keylen != len)
 125         errx(1, "output buffer not same length: %d", (int)keylen);
 126
 127     if (memcmp(res2, in, len) != 0)
 128         errx(1, "string not the same after decryption");
 129
 130     len2 = keylen;
 131
 132     if (RSA_sign(NID_sha1, in, len, res, &len2, rsa) != 1)
 133         errx(1, "RSA_sign failed");
 134
 135     if (RSA_verify(NID_sha1, in, len, res, len2, rsa) != 1)
 136         errx(1, "RSA_verify failed");
 137
 138     free(res);
 139     free(res2);
 140 }
 141
 142 static int
 143 cb_func(int a, int b, BN_GENCB *c)
 144 {
 145     return 1;
 146 }
 147
 148 static RSA *
 149 read_key(ENGINE *engine, const char *keyfile)
 150 {
 151     unsigned char buf[1024 * 4];
 152     const unsigned char *p;
 153     size_t size;
 154     RSA *rsa;
 155     FILE *f;
 156
 157     f = fopen(keyfile, "rb");
 158     if (f == NULL)
 159         err(1, "could not open file %s", keyfile);
 160     rk_cloexec_file(f);
 161
 162     size = fread(buf, 1, sizeof(buf), f);
 163     fclose(f);
 164     if (size == 0)
 165         err(1, "failed to read file %s", keyfile);
 166     if (size == sizeof(buf))
 167         err(1, "key too long in file %s!", keyfile);
 168
 169     p = buf;
 170     rsa = d2i_RSAPrivateKey(NULL, &p, size);
 171     if (rsa == NULL)
 172         err(1, "failed to parse key in file %s", keyfile);
 173
 174     RSA_set_method(rsa, ENGINE_get_RSA(engine));
 175
 176     if (!key_blinding)
 177         rsa->flags |= RSA_FLAG_NO_BLINDING;
 178
 179     return rsa;
 180 }
 181
 182 /*
 183  *
 184  */
 185
 186 static void
 187 usage (int ret)
 188 {
 189     arg_printusage (args,
 190                     sizeof(args)/sizeof(*args),
 191                     NULL,
 192                     "filename.so");
 193     exit (ret);
 194 }
 195
 196 int
 197 main(int argc, char **argv)
 198 {
 199     ENGINE *engine = NULL;
 200     int i, j, idx = 0;
 201     RSA *rsa;
 202
 203     setprogname(argv[0]);
 204
 205     if(getarg(args, sizeof(args) / sizeof(args[0]), argc, argv, &idx))
 206         usage(1);
 207
 208     if (help_flag)
 209         usage(0);
 210
 211     if(version_flag){
 212         print_version(NULL);
 213         exit(0);
 214     }
 215
 216     argc -= idx;
 217     argv += idx;
 218
 219     OpenSSL_add_all_algorithms();
 220 #ifdef OPENSSL
 221     ENGINE_load_openssl();
 222 #endif
 223     ENGINE_load_builtin_engines();
 224
 225     if (argc == 0) {
 226         engine = ENGINE_by_id("builtin");
 227     } else {
 228         engine = ENGINE_by_id(argv[0]);
 229         if (engine == NULL)
 230             engine = ENGINE_by_dso(argv[0], id_flag);
 231     }
 232     if (engine == NULL)
 233         errx(1, "ENGINE_by_dso failed");
 234
 235     if (ENGINE_get_RSA(engine) == NULL)
 236         return 77;
 237
 238     printf("rsa %s\n", ENGINE_get_RSA(engine)->name);
 239
 240     if (RAND_status() != 1)
 241         errx(77, "no functional random device, refusing to run tests");
 242
 243     if (time_keygen) {
 244         struct timeval tv1, tv2;
 245         BIGNUM *e;
 246
 247         rsa = RSA_new_method(engine);
 248         if (!key_blinding)
 249             rsa->flags |= RSA_FLAG_NO_BLINDING;
 250
 251         e = BN_new();
 252         BN_set_word(e, 0x10001);
 253
 254         printf("running keygen with %d loops\n", loops);
 255
 256         gettimeofday(&tv1, NULL);
 257
 258         for (i = 0; i < loops; i++) {
 259             rsa = RSA_new_method(engine);
 260             if (RSA_generate_key_ex(rsa, 1024, e, NULL) != 1)
 261                 errx(1, "RSA_generate_key_ex");
 262             RSA_free(rsa);
 263         }
 264
 265         gettimeofday(&tv2, NULL);
 266         timevalsub(&tv2, &tv1);
 267
 268         printf("time %lu.%06lu\n",
 269                (unsigned long)tv2.tv_sec,
 270                (unsigned long)tv2.tv_usec);
 271
 272         BN_free(e);
 273         ENGINE_finish(engine);
 274
 275         return 0;
 276     }
 277
 278     if (time_key) {
 279         const int size = 20;
 280         struct timeval tv1, tv2;
 281         unsigned char *p;
 282
 283         if (strcmp(time_key, "generate") == 0) {
 284             BIGNUM *e;
 285
 286             rsa = RSA_new_method(engine);
 287             if (!key_blinding)
 288                 rsa->flags |= RSA_FLAG_NO_BLINDING;
 289
 290             e = BN_new();
 291             BN_set_word(e, 0x10001);
 292
 293             if (RSA_generate_key_ex(rsa, 1024, e, NULL) != 1)
 294                 errx(1, "RSA_generate_key_ex");
 295         } else {
 296             rsa = read_key(engine, time_key);
 297         }
 298
 299         p = emalloc(loops * size);
 300
 301         RAND_bytes(p, loops * size);
 302
 303         gettimeofday(&tv1, NULL);
 304         for (i = 0; i < loops; i++)
 305             check_rsa(p + (i * size), size, rsa, RSA_PKCS1_PADDING);
 306         gettimeofday(&tv2, NULL);
 307
 308         timevalsub(&tv2, &tv1);
 309
 310         printf("time %lu.%06lu\n",
 311                (unsigned long)tv2.tv_sec,
 312                (unsigned long)tv2.tv_usec);
 313
 314         RSA_free(rsa);
 315         ENGINE_finish(engine);
 316
 317         return 0;
 318     }
 319
 320     if (rsa_key) {
 321         rsa = read_key(engine, rsa_key);
 322
 323         /*
 324          * Assuming that you use the RSA key in the distribution, this
 325          * test will generate a signature have a starting zero and thus
 326          * will generate a checksum that is 127 byte instead of the
 327          * checksum that is 128 byte (like the key).
 328          */
 329         {
 330             const unsigned char sha1[20] = {
 331                 0x6d, 0x33, 0xf9, 0x40, 0x75, 0x5b, 0x4e, 0xc5, 0x90, 0x35,
 332                 0x48, 0xab, 0x75, 0x02, 0x09, 0x76, 0x9a, 0xb4, 0x7d, 0x6b
 333             };
 334
 335             check_rsa(sha1, sizeof(sha1), rsa, RSA_PKCS1_PADDING);
 336         }
 337
 338         for (i = 0; i < 128; i++) {
 339             unsigned char sha1[20];
 340
 341             RAND_bytes(sha1, sizeof(sha1));
 342             check_rsa(sha1, sizeof(sha1), rsa, RSA_PKCS1_PADDING);
 343         }
 344         for (i = 0; i < 128; i++) {
 345             unsigned char des3[21];
 346
 347             RAND_bytes(des3, sizeof(des3));
 348             check_rsa(des3, sizeof(des3), rsa, RSA_PKCS1_PADDING);
 349         }
 350         for (i = 0; i < 128; i++) {
 351             unsigned char aes[32];
 352
 353             RAND_bytes(aes, sizeof(aes));
 354             check_rsa(aes, sizeof(aes), rsa, RSA_PKCS1_PADDING);
 355         }
 356
 357         RSA_free(rsa);
 358     }
 359
 360     for (i = 0; i < loops; i++) {
 361         BN_GENCB cb;
 362         BIGNUM *e;
 363         unsigned int n;
 364
 365         rsa = RSA_new_method(engine);
 366         if (!key_blinding)
 367             rsa->flags |= RSA_FLAG_NO_BLINDING;
 368
 369         e = BN_new();
 370         BN_set_word(e, 0x10001);
 371
 372         BN_GENCB_set(&cb, cb_func, NULL);
 373
 374         RAND_bytes(&n, sizeof(n));
 375         n &= 0x1ff;
 376         n += 1024;
 377
 378         if (RSA_generate_key_ex(rsa, n, e, &cb) != 1)
 379             errx(1, "RSA_generate_key_ex");
 380
 381         BN_free(e);
 382
 383         for (j = 0; j < 8; j++) {
 384             unsigned char sha1[20];
 385             RAND_bytes(sha1, sizeof(sha1));
 386             check_rsa(sha1, sizeof(sha1), rsa, RSA_PKCS1_PADDING);
 387         }
 388
 389         RSA_free(rsa);
 390     }
 391
 392     ENGINE_finish(engine);
 393
 394     return 0;
 395 }