1/* Demo of how to construct your own engine and using it. The basis of this 2 engine is RSAref, an old reference of the RSA algorithm which can still 3 be found a little here and there. */ 4 5#include <stdio.h> 6#include <string.h> 7#include "./source/global.h" 8#include "./source/rsaref.h" 9#include "./source/rsa.h" 10#include "./source/des.h" 11#include <openssl/err.h> 12#define OPENSSL_NO_MD2 13#define OPENSSL_NO_MD5 14#include <openssl/evp.h> 15#include <openssl/bn.h> 16#include <openssl/engine.h> 17 18#define RSAREF_LIB_NAME "rsaref engine" 19#include "rsaref_err.c" 20 21/***************************************************************************** 22 *** Function declarations and global variable definitions *** 23 *****************************************************************************/ 24 25/***************************************************************************** 26 * Constants used when creating the ENGINE 27 **/ 28static const char *engine_rsaref_id = "rsaref"; 29static const char *engine_rsaref_name = "RSAref engine support"; 30 31/***************************************************************************** 32 * Functions to handle the engine 33 **/ 34static int rsaref_destroy(ENGINE *e); 35static int rsaref_init(ENGINE *e); 36static int rsaref_finish(ENGINE *e); 37#if 0 38static int rsaref_ctrl(ENGINE *e, int cmd, long i, void *p, void (*f)()); 39#endif 40 41/***************************************************************************** 42 * Engine commands 43 **/ 44static const ENGINE_CMD_DEFN rsaref_cmd_defns[] = { 45 {0, NULL, NULL, 0} 46 }; 47 48/***************************************************************************** 49 * RSA functions 50 **/ 51static int rsaref_private_decrypt(int len, const unsigned char *from, 52 unsigned char *to, RSA *rsa, int padding); 53static int rsaref_private_encrypt(int len, const unsigned char *from, 54 unsigned char *to, RSA *rsa, int padding); 55static int rsaref_public_encrypt(int len, const unsigned char *from, 56 unsigned char *to, RSA *rsa, int padding); 57static int rsaref_public_decrypt(int len, const unsigned char *from, 58 unsigned char *to, RSA *rsa, int padding); 59static int bnref_mod_exp(BIGNUM *r,const BIGNUM *a,const BIGNUM *p,const BIGNUM *m, 60 BN_CTX *ctx, BN_MONT_CTX *m_ctx); 61static int rsaref_mod_exp(BIGNUM *r0, const BIGNUM *I, RSA *rsa); 62 63/***************************************************************************** 64 * Our RSA method 65 **/ 66static RSA_METHOD rsaref_rsa = 67{ 68 "RSAref PKCS#1 RSA", 69 rsaref_public_encrypt, 70 rsaref_public_decrypt, 71 rsaref_private_encrypt, 72 rsaref_private_decrypt, 73 rsaref_mod_exp, 74 bnref_mod_exp, 75 NULL, 76 NULL, 77 0, 78 NULL, 79 NULL, 80 NULL 81}; 82 83/***************************************************************************** 84 * Symetric cipher and digest function registrars 85 **/ 86static int rsaref_ciphers(ENGINE *e, const EVP_CIPHER **cipher, 87 const int **nids, int nid); 88static int rsaref_digests(ENGINE *e, const EVP_MD **digest, 89 const int **nids, int nid); 90 91static int rsaref_cipher_nids[] = 92 { NID_des_cbc, NID_des_ede3_cbc, NID_desx_cbc, 0 }; 93static int rsaref_digest_nids[] = 94 { NID_md2, NID_md5, 0 }; 95 96/***************************************************************************** 97 * DES functions 98 **/ 99static int cipher_des_cbc_init(EVP_CIPHER_CTX *ctx, const unsigned char *key, 100 const unsigned char *iv, int enc); 101static int cipher_des_cbc_code(EVP_CIPHER_CTX *ctx, unsigned char *out, 102 const unsigned char *in, unsigned int inl); 103static int cipher_des_cbc_clean(EVP_CIPHER_CTX *); 104static int cipher_des_ede3_cbc_init(EVP_CIPHER_CTX *ctx, const unsigned char *key, 105 const unsigned char *iv, int enc); 106static int cipher_des_ede3_cbc_code(EVP_CIPHER_CTX *ctx, unsigned char *out, 107 const unsigned char *in, unsigned int inl); 108static int cipher_des_ede3_cbc_clean(EVP_CIPHER_CTX *); 109static int cipher_desx_cbc_init(EVP_CIPHER_CTX *ctx, const unsigned char *key, 110 const unsigned char *iv, int enc); 111static int cipher_desx_cbc_code(EVP_CIPHER_CTX *ctx, unsigned char *out, 112 const unsigned char *in, unsigned int inl); 113static int cipher_desx_cbc_clean(EVP_CIPHER_CTX *); 114 115/***************************************************************************** 116 * Our DES ciphers 117 **/ 118static const EVP_CIPHER cipher_des_cbc = 119 { 120 NID_des_cbc, 121 8, 8, 8, 122 0 | EVP_CIPH_CBC_MODE, 123 cipher_des_cbc_init, 124 cipher_des_cbc_code, 125 cipher_des_cbc_clean, 126 sizeof(DES_CBC_CTX), 127 NULL, 128 NULL, 129 NULL, 130 NULL 131 }; 132 133static const EVP_CIPHER cipher_des_ede3_cbc = 134 { 135 NID_des_ede3_cbc, 136 8, 24, 8, 137 0 | EVP_CIPH_CBC_MODE, 138 cipher_des_ede3_cbc_init, 139 cipher_des_ede3_cbc_code, 140 cipher_des_ede3_cbc_clean, 141 sizeof(DES3_CBC_CTX), 142 NULL, 143 NULL, 144 NULL, 145 NULL 146 }; 147 148static const EVP_CIPHER cipher_desx_cbc = 149 { 150 NID_desx_cbc, 151 8, 24, 8, 152 0 | EVP_CIPH_CBC_MODE, 153 cipher_desx_cbc_init, 154 cipher_desx_cbc_code, 155 cipher_desx_cbc_clean, 156 sizeof(DESX_CBC_CTX), 157 NULL, 158 NULL, 159 NULL, 160 NULL 161 }; 162 163/***************************************************************************** 164 * MD functions 165 **/ 166static int digest_md2_init(EVP_MD_CTX *ctx); 167static int digest_md2_update(EVP_MD_CTX *ctx,const void *data, 168 unsigned long count); 169static int digest_md2_final(EVP_MD_CTX *ctx,unsigned char *md); 170static int digest_md5_init(EVP_MD_CTX *ctx); 171static int digest_md5_update(EVP_MD_CTX *ctx,const void *data, 172 unsigned long count); 173static int digest_md5_final(EVP_MD_CTX *ctx,unsigned char *md); 174 175/***************************************************************************** 176 * Our MD digests 177 **/ 178static const EVP_MD digest_md2 = 179 { 180 NID_md2, 181 NID_md2WithRSAEncryption, 182 16, 183 0, 184 digest_md2_init, 185 digest_md2_update, 186 digest_md2_final, 187 NULL, 188 NULL, 189 EVP_PKEY_RSA_method, 190 16, 191 sizeof(MD2_CTX) 192 }; 193 194static const EVP_MD digest_md5 = 195 { 196 NID_md5, 197 NID_md5WithRSAEncryption, 198 16, 199 0, 200 digest_md5_init, 201 digest_md5_update, 202 digest_md5_final, 203 NULL, 204 NULL, 205 EVP_PKEY_RSA_method, 206 64, 207 sizeof(MD5_CTX) 208 }; 209 210/***************************************************************************** 211 *** Function definitions *** 212 *****************************************************************************/ 213 214/***************************************************************************** 215 * Functions to handle the engine 216 **/ 217 218static int bind_rsaref(ENGINE *e) 219 { 220 const RSA_METHOD *meth1; 221 if(!ENGINE_set_id(e, engine_rsaref_id) 222 || !ENGINE_set_name(e, engine_rsaref_name) 223 || !ENGINE_set_RSA(e, &rsaref_rsa) 224 || !ENGINE_set_ciphers(e, rsaref_ciphers) 225 || !ENGINE_set_digests(e, rsaref_digests) 226 || !ENGINE_set_destroy_function(e, rsaref_destroy) 227 || !ENGINE_set_init_function(e, rsaref_init) 228 || !ENGINE_set_finish_function(e, rsaref_finish) 229 /* || !ENGINE_set_ctrl_function(e, rsaref_ctrl) */ 230 /* || !ENGINE_set_cmd_defns(e, rsaref_cmd_defns) */) 231 return 0; 232 233 /* Ensure the rsaref error handling is set up */ 234 ERR_load_RSAREF_strings(); 235 return 1; 236 } 237 238#ifdef ENGINE_DYNAMIC_SUPPORT 239static int bind_helper(ENGINE *e, const char *id) 240 { 241 if(id && (strcmp(id, engine_rsaref_id) != 0)) 242 return 0; 243 if(!bind_rsaref(e)) 244 return 0; 245 return 1; 246 } 247IMPLEMENT_DYNAMIC_CHECK_FN() 248IMPLEMENT_DYNAMIC_BIND_FN(bind_helper) 249#else 250static ENGINE *engine_rsaref(void) 251 { 252 ENGINE *ret = ENGINE_new(); 253 if(!ret) 254 return NULL; 255 if(!bind_rsaref(ret)) 256 { 257 ENGINE_free(ret); 258 return NULL; 259 } 260 return ret; 261 } 262 263void ENGINE_load_rsaref(void) 264 { 265 /* Copied from eng_[openssl|dyn].c */ 266 ENGINE *toadd = engine_rsaref(); 267 if(!toadd) return; 268 ENGINE_add(toadd); 269 ENGINE_free(toadd); 270 ERR_clear_error(); 271 } 272#endif 273 274/* Initiator which is only present to make sure this engine looks available */ 275static int rsaref_init(ENGINE *e) 276 { 277 return 1; 278 } 279 280/* Finisher which is only present to make sure this engine looks available */ 281static int rsaref_finish(ENGINE *e) 282 { 283 return 1; 284 } 285 286/* Destructor (complements the "ENGINE_ncipher()" constructor) */ 287static int rsaref_destroy(ENGINE *e) 288 { 289 ERR_unload_RSAREF_strings(); 290 return 1; 291 } 292 293/***************************************************************************** 294 * RSA functions 295 **/ 296 297static int rsaref_mod_exp(BIGNUM *r0, const BIGNUM *I, RSA *rsa) 298 { 299 RSAREFerr(RSAREF_F_RSAREF_MOD_EXP,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 300 return(0); 301 } 302 303static int bnref_mod_exp(BIGNUM *r, const BIGNUM *a, const BIGNUM *p, 304 const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx) 305 { 306 RSAREFerr(RSAREF_F_BNREF_MOD_EXP,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 307 return(0); 308 } 309 310/* unsigned char *to: [max] */ 311static int RSAref_bn2bin(BIGNUM *from, unsigned char *to, int max) 312 { 313 int i; 314 315 i=BN_num_bytes(from); 316 if (i > max) 317 { 318 RSAREFerr(RSAREF_F_RSAREF_BN2BIN,RSAREF_R_LEN); 319 return(0); 320 } 321 322 memset(to,0,(unsigned int)max); 323 if (!BN_bn2bin(from,&(to[max-i]))) 324 return(0); 325 return(1); 326 } 327 328#ifdef undef 329/* unsigned char *from: [max] */ 330static BIGNUM *RSAref_bin2bn(unsigned char *from, BIGNUM *to, int max) 331 { 332 int i; 333 BIGNUM *ret; 334 335 for (i=0; i<max; i++) 336 if (from[i]) break; 337 338 ret=BN_bin2bn(&(from[i]),max-i,to); 339 return(ret); 340 } 341 342static int RSAref_Public_ref2eay(RSArefPublicKey *from, RSA *to) 343 { 344 to->n=RSAref_bin2bn(from->m,NULL,RSAref_MAX_LEN); 345 to->e=RSAref_bin2bn(from->e,NULL,RSAref_MAX_LEN); 346 if ((to->n == NULL) || (to->e == NULL)) return(0); 347 return(1); 348 } 349#endif 350 351static int RSAref_Public_eay2ref(RSA *from, R_RSA_PUBLIC_KEY *to) 352 { 353 to->bits=BN_num_bits(from->n); 354 if (!RSAref_bn2bin(from->n,to->modulus,MAX_RSA_MODULUS_LEN)) return(0); 355 if (!RSAref_bn2bin(from->e,to->exponent,MAX_RSA_MODULUS_LEN)) return(0); 356 return(1); 357 } 358 359#ifdef undef 360static int RSAref_Private_ref2eay(RSArefPrivateKey *from, RSA *to) 361 { 362 if ((to->n=RSAref_bin2bn(from->m,NULL,RSAref_MAX_LEN)) == NULL) 363 return(0); 364 if ((to->e=RSAref_bin2bn(from->e,NULL,RSAref_MAX_LEN)) == NULL) 365 return(0); 366 if ((to->d=RSAref_bin2bn(from->d,NULL,RSAref_MAX_LEN)) == NULL) 367 return(0); 368 if ((to->p=RSAref_bin2bn(from->prime[0],NULL,RSAref_MAX_PLEN)) == NULL) 369 return(0); 370 if ((to->q=RSAref_bin2bn(from->prime[1],NULL,RSAref_MAX_PLEN)) == NULL) 371 return(0); 372 if ((to->dmp1=RSAref_bin2bn(from->pexp[0],NULL,RSAref_MAX_PLEN)) 373 == NULL) 374 return(0); 375 if ((to->dmq1=RSAref_bin2bn(from->pexp[1],NULL,RSAref_MAX_PLEN)) 376 == NULL) 377 return(0); 378 if ((to->iqmp=RSAref_bin2bn(from->coef,NULL,RSAref_MAX_PLEN)) == NULL) 379 return(0); 380 return(1); 381 } 382#endif 383 384static int RSAref_Private_eay2ref(RSA *from, R_RSA_PRIVATE_KEY *to) 385 { 386 to->bits=BN_num_bits(from->n); 387 if (!RSAref_bn2bin(from->n,to->modulus,MAX_RSA_MODULUS_LEN)) return(0); 388 if (!RSAref_bn2bin(from->e,to->publicExponent,MAX_RSA_MODULUS_LEN)) return(0); 389 if (!RSAref_bn2bin(from->d,to->exponent,MAX_RSA_MODULUS_LEN)) return(0); 390 if (!RSAref_bn2bin(from->p,to->prime[0],MAX_RSA_PRIME_LEN)) return(0); 391 if (!RSAref_bn2bin(from->q,to->prime[1],MAX_RSA_PRIME_LEN)) return(0); 392 if (!RSAref_bn2bin(from->dmp1,to->primeExponent[0],MAX_RSA_PRIME_LEN)) return(0); 393 if (!RSAref_bn2bin(from->dmq1,to->primeExponent[1],MAX_RSA_PRIME_LEN)) return(0); 394 if (!RSAref_bn2bin(from->iqmp,to->coefficient,MAX_RSA_PRIME_LEN)) return(0); 395 return(1); 396 } 397 398static int rsaref_private_decrypt(int len, const unsigned char *from, unsigned char *to, 399 RSA *rsa, int padding) 400 { 401 int i,outlen= -1; 402 R_RSA_PRIVATE_KEY RSAkey; 403 404 if (!RSAref_Private_eay2ref(rsa,&RSAkey)) 405 goto err; 406 if ((i=RSAPrivateDecrypt(to,(unsigned int *)&outlen,(unsigned char *)from,len,&RSAkey)) != 0) 407 { 408 RSAREFerr(RSAREF_F_RSAREF_PRIVATE_DECRYPT,i); 409 outlen= -1; 410 } 411err: 412 memset(&RSAkey,0,sizeof(RSAkey)); 413 return(outlen); 414 } 415 416static int rsaref_private_encrypt(int len, const unsigned char *from, unsigned char *to, 417 RSA *rsa, int padding) 418 { 419 int i,outlen= -1; 420 R_RSA_PRIVATE_KEY RSAkey; 421 422 if (padding != RSA_PKCS1_PADDING) 423 { 424 RSAREFerr(RSAREF_F_RSAREF_PRIVATE_ENCRYPT, RSA_R_UNKNOWN_PADDING_TYPE); 425 goto err; 426 } 427 if (!RSAref_Private_eay2ref(rsa,&RSAkey)) 428 goto err; 429 if ((i=RSAPrivateEncrypt(to,(unsigned int *)&outlen,(unsigned char *)from,len,&RSAkey)) != 0) 430 { 431 RSAREFerr(RSAREF_F_RSAREF_PRIVATE_ENCRYPT,i); 432 outlen= -1; 433 } 434err: 435 memset(&RSAkey,0,sizeof(RSAkey)); 436 return(outlen); 437 } 438 439static int rsaref_public_decrypt(int len, const unsigned char *from, unsigned char *to, 440 RSA *rsa, int padding) 441 { 442 int i,outlen= -1; 443 R_RSA_PUBLIC_KEY RSAkey; 444 445 if (!RSAref_Public_eay2ref(rsa,&RSAkey)) 446 goto err; 447 if ((i=RSAPublicDecrypt(to,(unsigned int *)&outlen,(unsigned char *)from,len,&RSAkey)) != 0) 448 { 449 RSAREFerr(RSAREF_F_RSAREF_PUBLIC_DECRYPT,i); 450 outlen= -1; 451 } 452err: 453 memset(&RSAkey,0,sizeof(RSAkey)); 454 return(outlen); 455 } 456 457static int rsaref_public_encrypt(int len, const unsigned char *from, unsigned char *to, 458 RSA *rsa, int padding) 459 { 460 int outlen= -1; 461 int i; 462 R_RSA_PUBLIC_KEY RSAkey; 463 R_RANDOM_STRUCT rnd; 464 unsigned char buf[16]; 465 466 if (padding != RSA_PKCS1_PADDING && padding != RSA_SSLV23_PADDING) 467 { 468 RSAREFerr(RSAREF_F_RSAREF_PUBLIC_ENCRYPT, RSA_R_UNKNOWN_PADDING_TYPE); 469 goto err; 470 } 471 472 R_RandomInit(&rnd); 473 R_GetRandomBytesNeeded((unsigned int *)&i,&rnd); 474 while (i > 0) 475 { 476 if (RAND_bytes(buf,16) <= 0) 477 goto err; 478 R_RandomUpdate(&rnd,buf,(unsigned int)((i>16)?16:i)); 479 i-=16; 480 } 481 482 if (!RSAref_Public_eay2ref(rsa,&RSAkey)) 483 goto err; 484 if ((i=RSAPublicEncrypt(to,(unsigned int *)&outlen,(unsigned char *)from,len,&RSAkey,&rnd)) != 0) 485 { 486 RSAREFerr(RSAREF_F_RSAREF_PUBLIC_ENCRYPT,i); 487 outlen= -1; 488 goto err; 489 } 490err: 491 memset(&RSAkey,0,sizeof(RSAkey)); 492 R_RandomFinal(&rnd); 493 memset(&rnd,0,sizeof(rnd)); 494 return(outlen); 495 } 496 497/***************************************************************************** 498 * Symetric cipher and digest function registrars 499 **/ 500static int rsaref_ciphers(ENGINE *e, const EVP_CIPHER **cipher, 501 const int **nids, int nid) 502 { 503 int ok = 1; 504 if(!cipher) 505 { 506 /* We are returning a list of supported nids */ 507 *nids = rsaref_cipher_nids; 508 return (sizeof(rsaref_cipher_nids)-1)/sizeof(rsaref_cipher_nids[0]); 509 } 510 /* We are being asked for a specific cipher */ 511 switch (nid) 512 { 513 case NID_des_cbc: 514 *cipher = &cipher_des_cbc; break; 515 case NID_des_ede3_cbc: 516 *cipher = &cipher_des_ede3_cbc; break; 517 case NID_desx_cbc: 518 *cipher = &cipher_desx_cbc; break; 519 default: 520 ok = 0; 521 *cipher = NULL; 522 break; 523 } 524 return ok; 525 } 526static int rsaref_digests(ENGINE *e, const EVP_MD **digest, 527 const int **nids, int nid) 528 { 529 int ok = 1; 530 if(!digest) 531 { 532 /* We are returning a list of supported nids */ 533 *nids = rsaref_digest_nids; 534 return (sizeof(rsaref_digest_nids)-1)/sizeof(rsaref_digest_nids[0]); 535 } 536 /* We are being asked for a specific digest */ 537 switch (nid) 538 { 539 case NID_md2: 540 *digest = &digest_md2; break; 541 case NID_md5: 542 *digest = &digest_md5; break; 543 default: 544 ok = 0; 545 *digest = NULL; 546 break; 547 } 548 return ok; 549 } 550 551/***************************************************************************** 552 * DES functions 553 **/ 554#undef data 555#define data(ctx) ((DES_CBC_CTX *)(ctx)->cipher_data) 556static int cipher_des_cbc_init(EVP_CIPHER_CTX *ctx, const unsigned char *key, 557 const unsigned char *iv, int enc) 558 { 559 DES_CBCInit(data(ctx), (unsigned char *)key, (unsigned char *)iv, enc); 560 return 1; 561 } 562static int cipher_des_cbc_code(EVP_CIPHER_CTX *ctx, unsigned char *out, 563 const unsigned char *in, unsigned int inl) 564 { 565 int ret = DES_CBCUpdate(data(ctx), out, (unsigned char *)in, inl); 566 switch (ret) 567 { 568 case RE_LEN: 569 RSAREFerr(RSAREF_F_CIPHER_DES_CBC_CODE,RSAREF_R_LENGTH_NOT_BLOCK_ALIGNED); 570 break; 571 case 0: 572 break; 573 default: 574 RSAREFerr(RSAREF_F_CIPHER_DES_CBC_CODE,RSAREF_R_UNKNOWN_FAULT); 575 } 576 return !ret; 577 } 578static int cipher_des_cbc_clean(EVP_CIPHER_CTX *ctx) 579 { 580 memset(data(ctx), 0, ctx->cipher->ctx_size); 581 return 1; 582 } 583 584#undef data 585#define data(ctx) ((DES3_CBC_CTX *)(ctx)->cipher_data) 586static int cipher_des_ede3_cbc_init(EVP_CIPHER_CTX *ctx, const unsigned char *key, 587 const unsigned char *iv, int enc) 588 { 589 DES3_CBCInit(data(ctx), (unsigned char *)key, (unsigned char *)iv, 590 enc); 591 return 1; 592 } 593static int cipher_des_ede3_cbc_code(EVP_CIPHER_CTX *ctx, unsigned char *out, 594 const unsigned char *in, unsigned int inl) 595 { 596 int ret = DES3_CBCUpdate(data(ctx), out, (unsigned char *)in, inl); 597 switch (ret) 598 { 599 case RE_LEN: 600 RSAREFerr(RSAREF_F_CIPHER_DES_CBC_CODE,RSAREF_R_LENGTH_NOT_BLOCK_ALIGNED); 601 break; 602 case 0: 603 break; 604 default: 605 RSAREFerr(RSAREF_F_CIPHER_DES_CBC_CODE,RSAREF_R_UNKNOWN_FAULT); 606 } 607 return !ret; 608 } 609static int cipher_des_ede3_cbc_clean(EVP_CIPHER_CTX *ctx) 610 { 611 memset(data(ctx), 0, ctx->cipher->ctx_size); 612 return 1; 613 } 614 615#undef data 616#define data(ctx) ((DESX_CBC_CTX *)(ctx)->cipher_data) 617static int cipher_desx_cbc_init(EVP_CIPHER_CTX *ctx, const unsigned char *key, 618 const unsigned char *iv, int enc) 619 { 620 DESX_CBCInit(data(ctx), (unsigned char *)key, (unsigned char *)iv, 621 enc); 622 return 1; 623 } 624static int cipher_desx_cbc_code(EVP_CIPHER_CTX *ctx, unsigned char *out, 625 const unsigned char *in, unsigned int inl) 626 { 627 int ret = DESX_CBCUpdate(data(ctx), out, (unsigned char *)in, inl); 628 switch (ret) 629 { 630 case RE_LEN: 631 RSAREFerr(RSAREF_F_CIPHER_DES_CBC_CODE,RSAREF_R_LENGTH_NOT_BLOCK_ALIGNED); 632 break; 633 case 0: 634 break; 635 default: 636 RSAREFerr(RSAREF_F_CIPHER_DES_CBC_CODE,RSAREF_R_UNKNOWN_FAULT); 637 } 638 return !ret; 639 } 640static int cipher_desx_cbc_clean(EVP_CIPHER_CTX *ctx) 641 { 642 memset(data(ctx), 0, ctx->cipher->ctx_size); 643 return 1; 644 } 645 646/***************************************************************************** 647 * MD functions 648 **/ 649#undef data 650#define data(ctx) ((MD2_CTX *)(ctx)->md_data) 651static int digest_md2_init(EVP_MD_CTX *ctx) 652 { 653 MD2Init(data(ctx)); 654 return 1; 655 } 656static int digest_md2_update(EVP_MD_CTX *ctx,const void *data, 657 unsigned long count) 658 { 659 MD2Update(data(ctx), (unsigned char *)data, (unsigned int)count); 660 return 1; 661 } 662static int digest_md2_final(EVP_MD_CTX *ctx,unsigned char *md) 663 { 664 MD2Final(md, data(ctx)); 665 return 1; 666 } 667 668#undef data 669#define data(ctx) ((MD5_CTX *)(ctx)->md_data) 670static int digest_md5_init(EVP_MD_CTX *ctx) 671 { 672 MD5Init(data(ctx)); 673 return 1; 674 } 675static int digest_md5_update(EVP_MD_CTX *ctx,const void *data, 676 unsigned long count) 677 { 678 MD5Update(data(ctx), (unsigned char *)data, (unsigned int)count); 679 return 1; 680 } 681static int digest_md5_final(EVP_MD_CTX *ctx,unsigned char *md) 682 { 683 MD5Final(md, data(ctx)); 684 return 1; 685 } 686