1 /* $OpenBSD: eng_openssl.c,v 1.11 2015/08/28 01:06:09 beck Exp $ */ 2 /* Written by Geoff Thorpe (geoff@geoffthorpe.net) for the OpenSSL 3 * project 2000. 4 */ 5 /* ==================================================================== 6 * Copyright (c) 1999-2001 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 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED. 60 * ECDH support in OpenSSL originally developed by 61 * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project. 62 */ 63 64 #include <stdio.h> 65 #include <string.h> 66 67 #include <openssl/opensslconf.h> 68 69 #include <openssl/crypto.h> 70 #include <openssl/dso.h> 71 #include <openssl/engine.h> 72 #include <openssl/err.h> 73 #include <openssl/evp.h> 74 #include <openssl/pem.h> 75 #include <openssl/rand.h> 76 77 #ifndef OPENSSL_NO_DH 78 #include <openssl/dh.h> 79 #endif 80 #ifndef OPENSSL_NO_DSA 81 #include <openssl/dsa.h> 82 #endif 83 #ifndef OPENSSL_NO_RSA 84 #include <openssl/rsa.h> 85 #endif 86 87 /* This testing gunk is implemented (and explained) lower down. It also assumes 88 * the application explicitly calls "ENGINE_load_openssl()" because this is no 89 * longer automatic in ENGINE_load_builtin_engines(). */ 90 #define TEST_ENG_OPENSSL_RC4 91 #define TEST_ENG_OPENSSL_PKEY 92 /* #define TEST_ENG_OPENSSL_RC4_OTHERS */ 93 #define TEST_ENG_OPENSSL_RC4_P_INIT 94 /* #define TEST_ENG_OPENSSL_RC4_P_CIPHER */ 95 #define TEST_ENG_OPENSSL_SHA 96 /* #define TEST_ENG_OPENSSL_SHA_OTHERS */ 97 /* #define TEST_ENG_OPENSSL_SHA_P_INIT */ 98 /* #define TEST_ENG_OPENSSL_SHA_P_UPDATE */ 99 /* #define TEST_ENG_OPENSSL_SHA_P_FINAL */ 100 101 /* Now check what of those algorithms are actually enabled */ 102 #ifdef OPENSSL_NO_RC4 103 #undef TEST_ENG_OPENSSL_RC4 104 #undef TEST_ENG_OPENSSL_RC4_OTHERS 105 #undef TEST_ENG_OPENSSL_RC4_P_INIT 106 #undef TEST_ENG_OPENSSL_RC4_P_CIPHER 107 #endif 108 #if defined(OPENSSL_NO_SHA) || defined(OPENSSL_NO_SHA1) 109 #undef TEST_ENG_OPENSSL_SHA 110 #undef TEST_ENG_OPENSSL_SHA_OTHERS 111 #undef TEST_ENG_OPENSSL_SHA_P_INIT 112 #undef TEST_ENG_OPENSSL_SHA_P_UPDATE 113 #undef TEST_ENG_OPENSSL_SHA_P_FINAL 114 #endif 115 116 #ifdef TEST_ENG_OPENSSL_RC4 117 static int openssl_ciphers(ENGINE *e, const EVP_CIPHER **cipher, 118 const int **nids, int nid); 119 #endif 120 #ifdef TEST_ENG_OPENSSL_SHA 121 static int openssl_digests(ENGINE *e, const EVP_MD **digest, 122 const int **nids, int nid); 123 #endif 124 125 #ifdef TEST_ENG_OPENSSL_PKEY 126 static EVP_PKEY *openssl_load_privkey(ENGINE *eng, const char *key_id, 127 UI_METHOD *ui_method, void *callback_data); 128 #endif 129 130 /* The constants used when creating the ENGINE */ 131 static const char *engine_openssl_id = "openssl"; 132 static const char *engine_openssl_name = "Software engine support"; 133 134 /* This internal function is used by ENGINE_openssl() and possibly by the 135 * "dynamic" ENGINE support too */ 136 static int 137 bind_helper(ENGINE *e) 138 { 139 if (!ENGINE_set_id(e, engine_openssl_id) || 140 !ENGINE_set_name(e, engine_openssl_name) 141 #ifndef TEST_ENG_OPENSSL_NO_ALGORITHMS 142 #ifndef OPENSSL_NO_RSA 143 || !ENGINE_set_RSA(e, RSA_get_default_method()) 144 #endif 145 #ifndef OPENSSL_NO_DSA 146 || !ENGINE_set_DSA(e, DSA_get_default_method()) 147 #endif 148 #ifndef OPENSSL_NO_ECDH 149 || !ENGINE_set_ECDH(e, ECDH_OpenSSL()) 150 #endif 151 #ifndef OPENSSL_NO_ECDSA 152 || !ENGINE_set_ECDSA(e, ECDSA_OpenSSL()) 153 #endif 154 #ifndef OPENSSL_NO_DH 155 || !ENGINE_set_DH(e, DH_get_default_method()) 156 #endif 157 || !ENGINE_set_RAND(e, RAND_SSLeay()) 158 #ifdef TEST_ENG_OPENSSL_RC4 159 || !ENGINE_set_ciphers(e, openssl_ciphers) 160 #endif 161 #ifdef TEST_ENG_OPENSSL_SHA 162 || !ENGINE_set_digests(e, openssl_digests) 163 #endif 164 #endif 165 #ifdef TEST_ENG_OPENSSL_PKEY 166 || !ENGINE_set_load_privkey_function(e, openssl_load_privkey) 167 #endif 168 ) 169 return 0; 170 /* If we add errors to this ENGINE, ensure the error handling is setup here */ 171 /* openssl_load_error_strings(); */ 172 return 1; 173 } 174 175 static ENGINE * 176 engine_openssl(void) 177 { 178 ENGINE *ret = ENGINE_new(); 179 180 if (!ret) 181 return NULL; 182 if (!bind_helper(ret)) { 183 ENGINE_free(ret); 184 return NULL; 185 } 186 return ret; 187 } 188 189 void 190 ENGINE_load_openssl(void) 191 { 192 ENGINE *toadd = engine_openssl(); 193 194 if (!toadd) 195 return; 196 (void) ENGINE_add(toadd); 197 /* If the "add" worked, it gets a structural reference. So either way, 198 * we release our just-created reference. */ 199 ENGINE_free(toadd); 200 ERR_clear_error(); 201 } 202 203 /* This stuff is needed if this ENGINE is being compiled into a self-contained 204 * shared-library. */ 205 #ifdef ENGINE_DYNAMIC_SUPPORT 206 static int 207 bind_fn(ENGINE *e, const char *id) 208 { 209 if (id && (strcmp(id, engine_openssl_id) != 0)) 210 return 0; 211 if (!bind_helper(e)) 212 return 0; 213 return 1; 214 } 215 IMPLEMENT_DYNAMIC_CHECK_FN() 216 IMPLEMENT_DYNAMIC_BIND_FN(bind_fn) 217 #endif /* ENGINE_DYNAMIC_SUPPORT */ 218 219 #ifdef TEST_ENG_OPENSSL_RC4 220 /* This section of code compiles an "alternative implementation" of two modes of 221 * RC4 into this ENGINE. The result is that EVP_CIPHER operation for "rc4" 222 * should under normal circumstances go via this support rather than the default 223 * EVP support. There are other symbols to tweak the testing; 224 * TEST_ENC_OPENSSL_RC4_OTHERS - print a one line message to stderr each time 225 * we're asked for a cipher we don't support (should not happen). 226 * TEST_ENG_OPENSSL_RC4_P_INIT - print a one line message to stderr each time 227 * the "init_key" handler is called. 228 * TEST_ENG_OPENSSL_RC4_P_CIPHER - ditto for the "cipher" handler. 229 */ 230 #include <openssl/rc4.h> 231 #define TEST_RC4_KEY_SIZE 16 232 static int test_cipher_nids[] = {NID_rc4, NID_rc4_40}; 233 static int test_cipher_nids_number = 2; 234 235 typedef struct { 236 unsigned char key[TEST_RC4_KEY_SIZE]; 237 RC4_KEY ks; 238 } TEST_RC4_KEY; 239 240 #define test(ctx) ((TEST_RC4_KEY *)(ctx)->cipher_data) 241 static int 242 test_rc4_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, 243 const unsigned char *iv, int enc) 244 { 245 #ifdef TEST_ENG_OPENSSL_RC4_P_INIT 246 fprintf(stderr, "(TEST_ENG_OPENSSL_RC4) test_init_key() called\n"); 247 #endif 248 memcpy(&test(ctx)->key[0], key, EVP_CIPHER_CTX_key_length(ctx)); 249 RC4_set_key(&test(ctx)->ks, EVP_CIPHER_CTX_key_length(ctx), 250 test(ctx)->key); 251 return 1; 252 } 253 254 static int 255 test_rc4_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, 256 const unsigned char *in, size_t inl) 257 { 258 #ifdef TEST_ENG_OPENSSL_RC4_P_CIPHER 259 fprintf(stderr, "(TEST_ENG_OPENSSL_RC4) test_cipher() called\n"); 260 #endif 261 RC4(&test(ctx)->ks, inl, in, out); 262 return 1; 263 } 264 265 static const EVP_CIPHER test_r4_cipher = { 266 NID_rc4, 267 1, TEST_RC4_KEY_SIZE, 0, 268 EVP_CIPH_VARIABLE_LENGTH, 269 test_rc4_init_key, 270 test_rc4_cipher, 271 NULL, 272 sizeof(TEST_RC4_KEY), 273 NULL, 274 NULL, 275 NULL, 276 NULL 277 }; 278 279 static const EVP_CIPHER test_r4_40_cipher = { 280 NID_rc4_40, 281 1,5 /* 40 bit */,0, 282 EVP_CIPH_VARIABLE_LENGTH, 283 test_rc4_init_key, 284 test_rc4_cipher, 285 NULL, 286 sizeof(TEST_RC4_KEY), 287 NULL, 288 NULL, 289 NULL, 290 NULL 291 }; 292 293 static int 294 openssl_ciphers(ENGINE *e, const EVP_CIPHER **cipher, const int **nids, int nid) 295 { 296 if (!cipher) { 297 /* We are returning a list of supported nids */ 298 *nids = test_cipher_nids; 299 return test_cipher_nids_number; 300 } 301 /* We are being asked for a specific cipher */ 302 if (nid == NID_rc4) 303 *cipher = &test_r4_cipher; 304 else if (nid == NID_rc4_40) 305 *cipher = &test_r4_40_cipher; 306 else { 307 #ifdef TEST_ENG_OPENSSL_RC4_OTHERS 308 fprintf(stderr, "(TEST_ENG_OPENSSL_RC4) returning NULL for " 309 "nid %d\n", nid); 310 #endif 311 *cipher = NULL; 312 return 0; 313 } 314 return 1; 315 } 316 #endif 317 318 #ifdef TEST_ENG_OPENSSL_SHA 319 /* Much the same sort of comment as for TEST_ENG_OPENSSL_RC4 */ 320 #include <openssl/sha.h> 321 static int test_digest_nids[] = {NID_sha1}; 322 static int test_digest_nids_number = 1; 323 324 static int 325 test_sha1_init(EVP_MD_CTX *ctx) 326 { 327 #ifdef TEST_ENG_OPENSSL_SHA_P_INIT 328 fprintf(stderr, "(TEST_ENG_OPENSSL_SHA) test_sha1_init() called\n"); 329 #endif 330 return SHA1_Init(ctx->md_data); 331 } 332 333 static int 334 test_sha1_update(EVP_MD_CTX *ctx, const void *data, size_t count) 335 { 336 #ifdef TEST_ENG_OPENSSL_SHA_P_UPDATE 337 fprintf(stderr, "(TEST_ENG_OPENSSL_SHA) test_sha1_update() called\n"); 338 #endif 339 return SHA1_Update(ctx->md_data, data, count); 340 } 341 342 static int 343 test_sha1_final(EVP_MD_CTX *ctx, unsigned char *md) 344 { 345 #ifdef TEST_ENG_OPENSSL_SHA_P_FINAL 346 fprintf(stderr, "(TEST_ENG_OPENSSL_SHA) test_sha1_final() called\n"); 347 #endif 348 return SHA1_Final(md, ctx->md_data); 349 } 350 351 static const EVP_MD test_sha_md = { 352 NID_sha1, 353 NID_sha1WithRSAEncryption, 354 SHA_DIGEST_LENGTH, 355 0, 356 test_sha1_init, 357 test_sha1_update, 358 test_sha1_final, 359 NULL, 360 NULL, 361 EVP_PKEY_RSA_method, 362 SHA_CBLOCK, 363 sizeof(EVP_MD *) + sizeof(SHA_CTX), 364 }; 365 366 static int 367 openssl_digests(ENGINE *e, const EVP_MD **digest, const int **nids, int nid) 368 { 369 if (!digest) { 370 /* We are returning a list of supported nids */ 371 *nids = test_digest_nids; 372 return test_digest_nids_number; 373 } 374 /* We are being asked for a specific digest */ 375 if (nid == NID_sha1) 376 *digest = &test_sha_md; 377 else { 378 #ifdef TEST_ENG_OPENSSL_SHA_OTHERS 379 fprintf(stderr, "(TEST_ENG_OPENSSL_SHA) returning NULL for " 380 "nid %d\n", nid); 381 #endif 382 *digest = NULL; 383 return 0; 384 } 385 return 1; 386 } 387 #endif 388 389 #ifdef TEST_ENG_OPENSSL_PKEY 390 static EVP_PKEY * 391 openssl_load_privkey(ENGINE *eng, const char *key_id, UI_METHOD *ui_method, 392 void *callback_data) 393 { 394 BIO *in; 395 EVP_PKEY *key; 396 397 fprintf(stderr, "(TEST_ENG_OPENSSL_PKEY)Loading Private key %s\n", 398 key_id); 399 in = BIO_new_file(key_id, "r"); 400 if (!in) 401 return NULL; 402 key = PEM_read_bio_PrivateKey(in, NULL, 0, NULL); 403 BIO_free(in); 404 return key; 405 } 406 #endif 407