1/* ssl/ssl_ciph.c */ 2/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) 3 * All rights reserved. 4 * 5 * This package is an SSL implementation written 6 * by Eric Young (eay@cryptsoft.com). 7 * The implementation was written so as to conform with Netscapes SSL. 8 * 9 * This library is free for commercial and non-commercial use as long as 10 * the following conditions are aheared to. The following conditions 11 * apply to all code found in this distribution, be it the RC4, RSA, 12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation 13 * included with this distribution is covered by the same copyright terms 14 * except that the holder is Tim Hudson (tjh@cryptsoft.com). 15 * 16 * Copyright remains Eric Young's, and as such any Copyright notices in 17 * the code are not to be removed. 18 * If this package is used in a product, Eric Young should be given attribution 19 * as the author of the parts of the library used. 20 * This can be in the form of a textual message at program startup or 21 * in documentation (online or textual) provided with the package. 22 * 23 * Redistribution and use in source and binary forms, with or without 24 * modification, are permitted provided that the following conditions 25 * are met: 26 * 1. Redistributions of source code must retain the copyright 27 * notice, this list of conditions and the following disclaimer. 28 * 2. Redistributions in binary form must reproduce the above copyright 29 * notice, this list of conditions and the following disclaimer in the 30 * documentation and/or other materials provided with the distribution. 31 * 3. All advertising materials mentioning features or use of this software 32 * must display the following acknowledgement: 33 * "This product includes cryptographic software written by 34 * Eric Young (eay@cryptsoft.com)" 35 * The word 'cryptographic' can be left out if the rouines from the library 36 * being used are not cryptographic related :-). 37 * 4. If you include any Windows specific code (or a derivative thereof) from 38 * the apps directory (application code) you must include an acknowledgement: 39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" 40 * 41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 51 * SUCH DAMAGE. 52 * 53 * The licence and distribution terms for any publically available version or 54 * derivative of this code cannot be changed. i.e. this code cannot simply be 55 * copied and put under another distribution licence 56 * [including the GNU Public Licence.] 57 */ 58/* ==================================================================== 59 * Copyright (c) 1998-2006 The OpenSSL Project. All rights reserved. 60 * 61 * Redistribution and use in source and binary forms, with or without 62 * modification, are permitted provided that the following conditions 63 * are met: 64 * 65 * 1. Redistributions of source code must retain the above copyright 66 * notice, this list of conditions and the following disclaimer. 67 * 68 * 2. Redistributions in binary form must reproduce the above copyright 69 * notice, this list of conditions and the following disclaimer in 70 * the documentation and/or other materials provided with the 71 * distribution. 72 * 73 * 3. All advertising materials mentioning features or use of this 74 * software must display the following acknowledgment: 75 * "This product includes software developed by the OpenSSL Project 76 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)" 77 * 78 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to 79 * endorse or promote products derived from this software without 80 * prior written permission. For written permission, please contact 81 * openssl-core@openssl.org. 82 * 83 * 5. Products derived from this software may not be called "OpenSSL" 84 * nor may "OpenSSL" appear in their names without prior written 85 * permission of the OpenSSL Project. 86 * 87 * 6. Redistributions of any form whatsoever must retain the following 88 * acknowledgment: 89 * "This product includes software developed by the OpenSSL Project 90 * for use in the OpenSSL Toolkit (http://www.openssl.org/)" 91 * 92 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY 93 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 94 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 95 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR 96 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 97 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 98 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 99 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 100 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 101 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 102 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 103 * OF THE POSSIBILITY OF SUCH DAMAGE. 104 * ==================================================================== 105 * 106 * This product includes cryptographic software written by Eric Young 107 * (eay@cryptsoft.com). This product includes software written by Tim 108 * Hudson (tjh@cryptsoft.com). 109 * 110 */ 111/* ==================================================================== 112 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED. 113 * ECC cipher suite support in OpenSSL originally developed by 114 * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project. 115 */ 116#include <stdio.h> 117#include <openssl/objects.h> 118#include <openssl/comp.h> 119#include "ssl_locl.h" 120 121#define SSL_ENC_DES_IDX 0 122#define SSL_ENC_3DES_IDX 1 123#define SSL_ENC_RC4_IDX 2 124#define SSL_ENC_RC2_IDX 3 125#define SSL_ENC_IDEA_IDX 4 126#define SSL_ENC_eFZA_IDX 5 127#define SSL_ENC_NULL_IDX 6 128#define SSL_ENC_AES128_IDX 7 129#define SSL_ENC_AES256_IDX 8 130#define SSL_ENC_NUM_IDX 9 131#define SSL_ENC_CAMELLIA128_IDX 9 132#define SSL_ENC_CAMELLIA256_IDX 10 133#undef SSL_ENC_NUM_IDX 134#define SSL_ENC_NUM_IDX 11 135 136 137static const EVP_CIPHER *ssl_cipher_methods[SSL_ENC_NUM_IDX]={ 138 NULL,NULL,NULL,NULL,NULL,NULL, 139 }; 140 141#define SSL_COMP_NULL_IDX 0 142#define SSL_COMP_ZLIB_IDX 1 143#define SSL_COMP_NUM_IDX 2 144 145static STACK_OF(SSL_COMP) *ssl_comp_methods=NULL; 146 147#define SSL_MD_MD5_IDX 0 148#define SSL_MD_SHA1_IDX 1 149#define SSL_MD_NUM_IDX 2 150static const EVP_MD *ssl_digest_methods[SSL_MD_NUM_IDX]={ 151 NULL,NULL, 152 }; 153 154#define CIPHER_ADD 1 155#define CIPHER_KILL 2 156#define CIPHER_DEL 3 157#define CIPHER_ORD 4 158#define CIPHER_SPECIAL 5 159 160typedef struct cipher_order_st 161 { 162 SSL_CIPHER *cipher; 163 int active; 164 int dead; 165 struct cipher_order_st *next,*prev; 166 } CIPHER_ORDER; 167 168static const SSL_CIPHER cipher_aliases[]={ 169 /* Don't include eNULL unless specifically enabled. */ 170 /* Don't include ECC in ALL because these ciphers are not yet official. */ 171 {0,SSL_TXT_ALL, 0,SSL_ALL & ~SSL_eNULL & ~SSL_kECDH & ~SSL_kECDHE, SSL_ALL ,0,0,0,SSL_ALL,SSL_ALL}, /* must be first */ 172 /* TODO: COMPLEMENT OF ALL and COMPLEMENT OF DEFAULT do not have ECC cipher suites handled properly. */ 173 {0,SSL_TXT_CMPALL,0,SSL_eNULL,0,0,0,0,SSL_ENC_MASK,0}, /* COMPLEMENT OF ALL */ 174 {0,SSL_TXT_CMPDEF,0,SSL_ADH, 0,0,0,0,SSL_AUTH_MASK,0}, 175 {0,SSL_TXT_kKRB5,0,SSL_kKRB5,0,0,0,0,SSL_MKEY_MASK,0}, /* VRS Kerberos5 */ 176 {0,SSL_TXT_kRSA,0,SSL_kRSA, 0,0,0,0,SSL_MKEY_MASK,0}, 177 {0,SSL_TXT_kDHr,0,SSL_kDHr, 0,0,0,0,SSL_MKEY_MASK,0}, 178 {0,SSL_TXT_kDHd,0,SSL_kDHd, 0,0,0,0,SSL_MKEY_MASK,0}, 179 {0,SSL_TXT_kEDH,0,SSL_kEDH, 0,0,0,0,SSL_MKEY_MASK,0}, 180 {0,SSL_TXT_kFZA,0,SSL_kFZA, 0,0,0,0,SSL_MKEY_MASK,0}, 181 {0,SSL_TXT_DH, 0,SSL_DH, 0,0,0,0,SSL_MKEY_MASK,0}, 182 {0,SSL_TXT_ECC, 0,(SSL_kECDH|SSL_kECDHE), 0,0,0,0,SSL_MKEY_MASK,0}, 183 {0,SSL_TXT_EDH, 0,SSL_EDH, 0,0,0,0,SSL_MKEY_MASK|SSL_AUTH_MASK,0}, 184 {0,SSL_TXT_aKRB5,0,SSL_aKRB5,0,0,0,0,SSL_AUTH_MASK,0}, /* VRS Kerberos5 */ 185 {0,SSL_TXT_aRSA,0,SSL_aRSA, 0,0,0,0,SSL_AUTH_MASK,0}, 186 {0,SSL_TXT_aDSS,0,SSL_aDSS, 0,0,0,0,SSL_AUTH_MASK,0}, 187 {0,SSL_TXT_aFZA,0,SSL_aFZA, 0,0,0,0,SSL_AUTH_MASK,0}, 188 {0,SSL_TXT_aNULL,0,SSL_aNULL,0,0,0,0,SSL_AUTH_MASK,0}, 189 {0,SSL_TXT_aDH, 0,SSL_aDH, 0,0,0,0,SSL_AUTH_MASK,0}, 190 {0,SSL_TXT_DSS, 0,SSL_DSS, 0,0,0,0,SSL_AUTH_MASK,0}, 191 192 {0,SSL_TXT_DES, 0,SSL_DES, 0,0,0,0,SSL_ENC_MASK,0}, 193 {0,SSL_TXT_3DES,0,SSL_3DES, 0,0,0,0,SSL_ENC_MASK,0}, 194 {0,SSL_TXT_RC4, 0,SSL_RC4, 0,0,0,0,SSL_ENC_MASK,0}, 195 {0,SSL_TXT_RC2, 0,SSL_RC2, 0,0,0,0,SSL_ENC_MASK,0}, 196#ifndef OPENSSL_NO_IDEA 197 {0,SSL_TXT_IDEA,0,SSL_IDEA, 0,0,0,0,SSL_ENC_MASK,0}, 198#endif 199 {0,SSL_TXT_eNULL,0,SSL_eNULL,0,0,0,0,SSL_ENC_MASK,0}, 200 {0,SSL_TXT_eFZA,0,SSL_eFZA, 0,0,0,0,SSL_ENC_MASK,0}, 201 {0,SSL_TXT_AES, 0,SSL_AES, 0,0,0,0,SSL_ENC_MASK,0}, 202 {0,SSL_TXT_CAMELLIA, 0,SSL_CAMELLIA, 0,0,0,0,SSL_ENC_MASK,0}, 203 204 {0,SSL_TXT_MD5, 0,SSL_MD5, 0,0,0,0,SSL_MAC_MASK,0}, 205 {0,SSL_TXT_SHA1,0,SSL_SHA1, 0,0,0,0,SSL_MAC_MASK,0}, 206 {0,SSL_TXT_SHA, 0,SSL_SHA, 0,0,0,0,SSL_MAC_MASK,0}, 207 208 {0,SSL_TXT_NULL,0,SSL_NULL, 0,0,0,0,SSL_ENC_MASK,0}, 209 {0,SSL_TXT_KRB5,0,SSL_KRB5, 0,0,0,0,SSL_AUTH_MASK|SSL_MKEY_MASK,0}, 210 {0,SSL_TXT_RSA, 0,SSL_RSA, 0,0,0,0,SSL_AUTH_MASK|SSL_MKEY_MASK,0}, 211 {0,SSL_TXT_ADH, 0,SSL_ADH, 0,0,0,0,SSL_AUTH_MASK|SSL_MKEY_MASK,0}, 212 {0,SSL_TXT_FZA, 0,SSL_FZA, 0,0,0,0,SSL_AUTH_MASK|SSL_MKEY_MASK|SSL_ENC_MASK,0}, 213 214 {0,SSL_TXT_SSLV2, 0,SSL_SSLV2, 0,0,0,0,SSL_SSL_MASK,0}, 215 {0,SSL_TXT_SSLV3, 0,SSL_SSLV3, 0,0,0,0,SSL_SSL_MASK,0}, 216 {0,SSL_TXT_TLSV1, 0,SSL_TLSV1, 0,0,0,0,SSL_SSL_MASK,0}, 217 218 {0,SSL_TXT_EXP ,0, 0,SSL_EXPORT, 0,0,0,0,SSL_EXP_MASK}, 219 {0,SSL_TXT_EXPORT,0, 0,SSL_EXPORT, 0,0,0,0,SSL_EXP_MASK}, 220 {0,SSL_TXT_EXP40, 0, 0, SSL_EXP40, 0,0,0,0,SSL_STRONG_MASK}, 221 {0,SSL_TXT_EXP56, 0, 0, SSL_EXP56, 0,0,0,0,SSL_STRONG_MASK}, 222 {0,SSL_TXT_LOW, 0, 0, SSL_LOW, 0,0,0,0,SSL_STRONG_MASK}, 223 {0,SSL_TXT_MEDIUM,0, 0,SSL_MEDIUM, 0,0,0,0,SSL_STRONG_MASK}, 224 {0,SSL_TXT_HIGH, 0, 0, SSL_HIGH, 0,0,0,0,SSL_STRONG_MASK}, 225 }; 226 227void ssl_load_ciphers(void) 228 { 229 ssl_cipher_methods[SSL_ENC_DES_IDX]= 230 EVP_get_cipherbyname(SN_des_cbc); 231 ssl_cipher_methods[SSL_ENC_3DES_IDX]= 232 EVP_get_cipherbyname(SN_des_ede3_cbc); 233 ssl_cipher_methods[SSL_ENC_RC4_IDX]= 234 EVP_get_cipherbyname(SN_rc4); 235 ssl_cipher_methods[SSL_ENC_RC2_IDX]= 236 EVP_get_cipherbyname(SN_rc2_cbc); 237#ifndef OPENSSL_NO_IDEA 238 ssl_cipher_methods[SSL_ENC_IDEA_IDX]= 239 EVP_get_cipherbyname(SN_idea_cbc); 240#else 241 ssl_cipher_methods[SSL_ENC_IDEA_IDX]= NULL; 242#endif 243 ssl_cipher_methods[SSL_ENC_AES128_IDX]= 244 EVP_get_cipherbyname(SN_aes_128_cbc); 245 ssl_cipher_methods[SSL_ENC_AES256_IDX]= 246 EVP_get_cipherbyname(SN_aes_256_cbc); 247 ssl_cipher_methods[SSL_ENC_CAMELLIA128_IDX]= 248 EVP_get_cipherbyname(SN_camellia_128_cbc); 249 ssl_cipher_methods[SSL_ENC_CAMELLIA256_IDX]= 250 EVP_get_cipherbyname(SN_camellia_256_cbc); 251 252 ssl_digest_methods[SSL_MD_MD5_IDX]= 253 EVP_get_digestbyname(SN_md5); 254 ssl_digest_methods[SSL_MD_SHA1_IDX]= 255 EVP_get_digestbyname(SN_sha1); 256 } 257 258 259#ifndef OPENSSL_NO_COMP 260 261static int sk_comp_cmp(const SSL_COMP * const *a, 262 const SSL_COMP * const *b) 263 { 264 return((*a)->id-(*b)->id); 265 } 266 267static void load_builtin_compressions(void) 268 { 269 int got_write_lock = 0; 270 271 CRYPTO_r_lock(CRYPTO_LOCK_SSL); 272 if (ssl_comp_methods == NULL) 273 { 274 CRYPTO_r_unlock(CRYPTO_LOCK_SSL); 275 CRYPTO_w_lock(CRYPTO_LOCK_SSL); 276 got_write_lock = 1; 277 278 if (ssl_comp_methods == NULL) 279 { 280 SSL_COMP *comp = NULL; 281 282 MemCheck_off(); 283 ssl_comp_methods=sk_SSL_COMP_new(sk_comp_cmp); 284 if (ssl_comp_methods != NULL) 285 { 286 comp=(SSL_COMP *)OPENSSL_malloc(sizeof(SSL_COMP)); 287 if (comp != NULL) 288 { 289 comp->method=COMP_zlib(); 290 if (comp->method 291 && comp->method->type == NID_undef) 292 OPENSSL_free(comp); 293 else 294 { 295 comp->id=SSL_COMP_ZLIB_IDX; 296 comp->name=comp->method->name; 297 sk_SSL_COMP_push(ssl_comp_methods,comp); 298 } 299 } 300 } 301 MemCheck_on(); 302 } 303 } 304 305 if (got_write_lock) 306 CRYPTO_w_unlock(CRYPTO_LOCK_SSL); 307 else 308 CRYPTO_r_unlock(CRYPTO_LOCK_SSL); 309 } 310#endif 311 312int ssl_cipher_get_evp(const SSL_SESSION *s, const EVP_CIPHER **enc, 313 const EVP_MD **md, SSL_COMP **comp) 314 { 315 int i; 316 SSL_CIPHER *c; 317 318 c=s->cipher; 319 if (c == NULL) return(0); 320 if (comp != NULL) 321 { 322 SSL_COMP ctmp; 323#ifndef OPENSSL_NO_COMP 324 load_builtin_compressions(); 325#endif 326 327 *comp=NULL; 328 ctmp.id=s->compress_meth; 329 if (ssl_comp_methods != NULL) 330 { 331 i=sk_SSL_COMP_find(ssl_comp_methods,&ctmp); 332 if (i >= 0) 333 *comp=sk_SSL_COMP_value(ssl_comp_methods,i); 334 else 335 *comp=NULL; 336 } 337 } 338 339 if ((enc == NULL) || (md == NULL)) return(0); 340 341 switch (c->algorithms & SSL_ENC_MASK) 342 { 343 case SSL_DES: 344 i=SSL_ENC_DES_IDX; 345 break; 346 case SSL_3DES: 347 i=SSL_ENC_3DES_IDX; 348 break; 349 case SSL_RC4: 350 i=SSL_ENC_RC4_IDX; 351 break; 352 case SSL_RC2: 353 i=SSL_ENC_RC2_IDX; 354 break; 355 case SSL_IDEA: 356 i=SSL_ENC_IDEA_IDX; 357 break; 358 case SSL_eNULL: 359 i=SSL_ENC_NULL_IDX; 360 break; 361 case SSL_AES: 362 switch(c->alg_bits) 363 { 364 case 128: i=SSL_ENC_AES128_IDX; break; 365 case 256: i=SSL_ENC_AES256_IDX; break; 366 default: i=-1; break; 367 } 368 break; 369 case SSL_CAMELLIA: 370 switch(c->alg_bits) 371 { 372 case 128: i=SSL_ENC_CAMELLIA128_IDX; break; 373 case 256: i=SSL_ENC_CAMELLIA256_IDX; break; 374 default: i=-1; break; 375 } 376 break; 377 378 default: 379 i= -1; 380 break; 381 } 382 383 if ((i < 0) || (i > SSL_ENC_NUM_IDX)) 384 *enc=NULL; 385 else 386 { 387 if (i == SSL_ENC_NULL_IDX) 388 *enc=EVP_enc_null(); 389 else 390 *enc=ssl_cipher_methods[i]; 391 } 392 393 switch (c->algorithms & SSL_MAC_MASK) 394 { 395 case SSL_MD5: 396 i=SSL_MD_MD5_IDX; 397 break; 398 case SSL_SHA1: 399 i=SSL_MD_SHA1_IDX; 400 break; 401 default: 402 i= -1; 403 break; 404 } 405 if ((i < 0) || (i > SSL_MD_NUM_IDX)) 406 *md=NULL; 407 else 408 *md=ssl_digest_methods[i]; 409 410 if ((*enc != NULL) && (*md != NULL)) 411 return(1); 412 else 413 return(0); 414 } 415 416#define ITEM_SEP(a) \ 417 (((a) == ':') || ((a) == ' ') || ((a) == ';') || ((a) == ',')) 418 419static void ll_append_tail(CIPHER_ORDER **head, CIPHER_ORDER *curr, 420 CIPHER_ORDER **tail) 421 { 422 if (curr == *tail) return; 423 if (curr == *head) 424 *head=curr->next; 425 if (curr->prev != NULL) 426 curr->prev->next=curr->next; 427 if (curr->next != NULL) /* should always be true */ 428 curr->next->prev=curr->prev; 429 (*tail)->next=curr; 430 curr->prev= *tail; 431 curr->next=NULL; 432 *tail=curr; 433 } 434 435struct disabled_masks { /* This is a kludge no longer needed with OpenSSL 0.9.9, 436 * where 128-bit and 256-bit algorithms simply will get 437 * separate bits. */ 438 unsigned long mask; /* everything except m256 */ 439 unsigned long m256; /* applies to 256-bit algorithms only */ 440}; 441 442struct disabled_masks ssl_cipher_get_disabled(void) 443 { 444 unsigned long mask; 445 unsigned long m256; 446 struct disabled_masks ret; 447 448 mask = SSL_kFZA; 449#ifdef OPENSSL_NO_RSA 450 mask |= SSL_aRSA|SSL_kRSA; 451#endif 452#ifdef OPENSSL_NO_DSA 453 mask |= SSL_aDSS; 454#endif 455#ifdef OPENSSL_NO_DH 456 mask |= SSL_kDHr|SSL_kDHd|SSL_kEDH|SSL_aDH; 457#endif 458#ifdef OPENSSL_NO_KRB5 459 mask |= SSL_kKRB5|SSL_aKRB5; 460#endif 461#ifdef OPENSSL_NO_ECDH 462 mask |= SSL_kECDH|SSL_kECDHE; 463#endif 464#ifdef SSL_FORBID_ENULL 465 mask |= SSL_eNULL; 466#endif 467 468 mask |= (ssl_cipher_methods[SSL_ENC_DES_IDX ] == NULL) ? SSL_DES :0; 469 mask |= (ssl_cipher_methods[SSL_ENC_3DES_IDX] == NULL) ? SSL_3DES:0; 470 mask |= (ssl_cipher_methods[SSL_ENC_RC4_IDX ] == NULL) ? SSL_RC4 :0; 471 mask |= (ssl_cipher_methods[SSL_ENC_RC2_IDX ] == NULL) ? SSL_RC2 :0; 472 mask |= (ssl_cipher_methods[SSL_ENC_IDEA_IDX] == NULL) ? SSL_IDEA:0; 473 mask |= (ssl_cipher_methods[SSL_ENC_eFZA_IDX] == NULL) ? SSL_eFZA:0; 474 475 mask |= (ssl_digest_methods[SSL_MD_MD5_IDX ] == NULL) ? SSL_MD5 :0; 476 mask |= (ssl_digest_methods[SSL_MD_SHA1_IDX] == NULL) ? SSL_SHA1:0; 477 478 /* finally consider algorithms where mask and m256 differ */ 479 m256 = mask; 480 mask |= (ssl_cipher_methods[SSL_ENC_AES128_IDX] == NULL) ? SSL_AES:0; 481 mask |= (ssl_cipher_methods[SSL_ENC_CAMELLIA128_IDX] == NULL) ? SSL_CAMELLIA:0; 482 m256 |= (ssl_cipher_methods[SSL_ENC_AES256_IDX] == NULL) ? SSL_AES:0; 483 m256 |= (ssl_cipher_methods[SSL_ENC_CAMELLIA256_IDX] == NULL) ? SSL_CAMELLIA:0; 484 485 ret.mask = mask; 486 ret.m256 = m256; 487 return ret; 488 } 489 490static void ssl_cipher_collect_ciphers(const SSL_METHOD *ssl_method, 491 int num_of_ciphers, unsigned long mask, unsigned long m256, 492 CIPHER_ORDER *co_list, CIPHER_ORDER **head_p, 493 CIPHER_ORDER **tail_p) 494 { 495 int i, co_list_num; 496 SSL_CIPHER *c; 497 498 /* 499 * We have num_of_ciphers descriptions compiled in, depending on the 500 * method selected (SSLv2 and/or SSLv3, TLSv1 etc). 501 * These will later be sorted in a linked list with at most num 502 * entries. 503 */ 504 505 /* Get the initial list of ciphers */ 506 co_list_num = 0; /* actual count of ciphers */ 507 for (i = 0; i < num_of_ciphers; i++) 508 { 509 c = ssl_method->get_cipher(i); 510#define IS_MASKED(c) ((c)->algorithms & (((c)->alg_bits == 256) ? m256 : mask)) 511 /* drop those that use any of that is not available */ 512 if ((c != NULL) && c->valid && !IS_MASKED(c)) 513 { 514 co_list[co_list_num].cipher = c; 515 co_list[co_list_num].next = NULL; 516 co_list[co_list_num].prev = NULL; 517 co_list[co_list_num].active = 0; 518 co_list_num++; 519#ifdef KSSL_DEBUG 520 printf("\t%d: %s %lx %lx\n",i,c->name,c->id,c->algorithms); 521#endif /* KSSL_DEBUG */ 522 /* 523 if (!sk_push(ca_list,(char *)c)) goto err; 524 */ 525 } 526 } 527 528 /* 529 * Prepare linked list from list entries 530 */ 531 for (i = 1; i < co_list_num - 1; i++) 532 { 533 co_list[i].prev = &(co_list[i-1]); 534 co_list[i].next = &(co_list[i+1]); 535 } 536 if (co_list_num > 0) 537 { 538 (*head_p) = &(co_list[0]); 539 (*head_p)->prev = NULL; 540 (*head_p)->next = &(co_list[1]); 541 (*tail_p) = &(co_list[co_list_num - 1]); 542 (*tail_p)->prev = &(co_list[co_list_num - 2]); 543 (*tail_p)->next = NULL; 544 } 545 } 546 547static void ssl_cipher_collect_aliases(SSL_CIPHER **ca_list, 548 int num_of_group_aliases, unsigned long mask, 549 CIPHER_ORDER *head) 550 { 551 CIPHER_ORDER *ciph_curr; 552 SSL_CIPHER **ca_curr; 553 int i; 554 555 /* 556 * First, add the real ciphers as already collected 557 */ 558 ciph_curr = head; 559 ca_curr = ca_list; 560 while (ciph_curr != NULL) 561 { 562 *ca_curr = ciph_curr->cipher; 563 ca_curr++; 564 ciph_curr = ciph_curr->next; 565 } 566 567 /* 568 * Now we add the available ones from the cipher_aliases[] table. 569 * They represent either an algorithm, that must be fully 570 * supported (not match any bit in mask) or represent a cipher 571 * strength value (will be added in any case because algorithms=0). 572 */ 573 for (i = 0; i < num_of_group_aliases; i++) 574 { 575 if ((i == 0) || /* always fetch "ALL" */ 576 !(cipher_aliases[i].algorithms & mask)) 577 { 578 *ca_curr = (SSL_CIPHER *)(cipher_aliases + i); 579 ca_curr++; 580 } 581 } 582 583 *ca_curr = NULL; /* end of list */ 584 } 585 586static void ssl_cipher_apply_rule(unsigned long cipher_id, unsigned long ssl_version, 587 unsigned long algorithms, unsigned long mask, 588 unsigned long algo_strength, unsigned long mask_strength, 589 int rule, int strength_bits, CIPHER_ORDER *co_list, 590 CIPHER_ORDER **head_p, CIPHER_ORDER **tail_p) 591 { 592 CIPHER_ORDER *head, *tail, *curr, *curr2, *tail2; 593 SSL_CIPHER *cp; 594 unsigned long ma, ma_s; 595 596#ifdef CIPHER_DEBUG 597 printf("Applying rule %d with %08lx %08lx %08lx %08lx (%d)\n", 598 rule, algorithms, mask, algo_strength, mask_strength, 599 strength_bits); 600#endif 601 602 curr = head = *head_p; 603 curr2 = head; 604 tail2 = tail = *tail_p; 605 for (;;) 606 { 607 if ((curr == NULL) || (curr == tail2)) break; 608 curr = curr2; 609 curr2 = curr->next; 610 611 cp = curr->cipher; 612 613 /* If explicit cipher suite, match only that one for its own protocol version. 614 * Usual selection criteria will be used for similar ciphersuites from other version! */ 615 616 if (cipher_id && (cp->algorithms & SSL_SSL_MASK) == ssl_version) 617 { 618 if (cp->id != cipher_id) 619 continue; 620 } 621 622 /* 623 * Selection criteria is either the number of strength_bits 624 * or the algorithm used. 625 */ 626 else if (strength_bits == -1) 627 { 628 ma = mask & cp->algorithms; 629 ma_s = mask_strength & cp->algo_strength; 630 631#ifdef CIPHER_DEBUG 632 printf("\nName: %s:\nAlgo = %08lx Algo_strength = %08lx\nMask = %08lx Mask_strength %08lx\n", cp->name, cp->algorithms, cp->algo_strength, mask, mask_strength); 633 printf("ma = %08lx ma_s %08lx, ma&algo=%08lx, ma_s&algos=%08lx\n", ma, ma_s, ma&algorithms, ma_s&algo_strength); 634#endif 635 /* 636 * Select: if none of the mask bit was met from the 637 * cipher or not all of the bits were met, the 638 * selection does not apply. 639 */ 640 if (((ma == 0) && (ma_s == 0)) || 641 ((ma & algorithms) != ma) || 642 ((ma_s & algo_strength) != ma_s)) 643 continue; /* does not apply */ 644 } 645 else if (strength_bits != cp->strength_bits) 646 continue; /* does not apply */ 647 648#ifdef CIPHER_DEBUG 649 printf("Action = %d\n", rule); 650#endif 651 652 /* add the cipher if it has not been added yet. */ 653 if (rule == CIPHER_ADD) 654 { 655 if (!curr->active) 656 { 657 int add_this_cipher = 1; 658 659 if (((cp->algorithms & (SSL_kECDHE|SSL_kECDH|SSL_aECDSA)) != 0)) 660 { 661 /* Make sure "ECCdraft" ciphersuites are activated only if 662 * *explicitly* requested, but not implicitly (such as 663 * as part of the "AES" alias). */ 664 665 add_this_cipher = (mask & (SSL_kECDHE|SSL_kECDH|SSL_aECDSA)) != 0 || cipher_id != 0; 666 } 667 668 if (add_this_cipher) 669 { 670 ll_append_tail(&head, curr, &tail); 671 curr->active = 1; 672 } 673 } 674 } 675 /* Move the added cipher to this location */ 676 else if (rule == CIPHER_ORD) 677 { 678 if (curr->active) 679 { 680 ll_append_tail(&head, curr, &tail); 681 } 682 } 683 else if (rule == CIPHER_DEL) 684 curr->active = 0; 685 else if (rule == CIPHER_KILL) 686 { 687 if (head == curr) 688 head = curr->next; 689 else 690 curr->prev->next = curr->next; 691 if (tail == curr) 692 tail = curr->prev; 693 curr->active = 0; 694 if (curr->next != NULL) 695 curr->next->prev = curr->prev; 696 if (curr->prev != NULL) 697 curr->prev->next = curr->next; 698 curr->next = NULL; 699 curr->prev = NULL; 700 } 701 } 702 703 *head_p = head; 704 *tail_p = tail; 705 } 706 707static int ssl_cipher_strength_sort(CIPHER_ORDER *co_list, 708 CIPHER_ORDER **head_p, 709 CIPHER_ORDER **tail_p) 710 { 711 int max_strength_bits, i, *number_uses; 712 CIPHER_ORDER *curr; 713 714 /* 715 * This routine sorts the ciphers with descending strength. The sorting 716 * must keep the pre-sorted sequence, so we apply the normal sorting 717 * routine as '+' movement to the end of the list. 718 */ 719 max_strength_bits = 0; 720 curr = *head_p; 721 while (curr != NULL) 722 { 723 if (curr->active && 724 (curr->cipher->strength_bits > max_strength_bits)) 725 max_strength_bits = curr->cipher->strength_bits; 726 curr = curr->next; 727 } 728 729 number_uses = OPENSSL_malloc((max_strength_bits + 1) * sizeof(int)); 730 if (!number_uses) 731 { 732 SSLerr(SSL_F_SSL_CIPHER_STRENGTH_SORT,ERR_R_MALLOC_FAILURE); 733 return(0); 734 } 735 memset(number_uses, 0, (max_strength_bits + 1) * sizeof(int)); 736 737 /* 738 * Now find the strength_bits values actually used 739 */ 740 curr = *head_p; 741 while (curr != NULL) 742 { 743 if (curr->active) 744 number_uses[curr->cipher->strength_bits]++; 745 curr = curr->next; 746 } 747 /* 748 * Go through the list of used strength_bits values in descending 749 * order. 750 */ 751 for (i = max_strength_bits; i >= 0; i--) 752 if (number_uses[i] > 0) 753 ssl_cipher_apply_rule(0, 0, 0, 0, 0, 0, CIPHER_ORD, i, 754 co_list, head_p, tail_p); 755 756 OPENSSL_free(number_uses); 757 return(1); 758 } 759 760static int ssl_cipher_process_rulestr(const char *rule_str, 761 CIPHER_ORDER *co_list, CIPHER_ORDER **head_p, 762 CIPHER_ORDER **tail_p, SSL_CIPHER **ca_list) 763 { 764 unsigned long algorithms, mask, algo_strength, mask_strength; 765 const char *l, *start, *buf; 766 int j, multi, found, rule, retval, ok, buflen; 767 unsigned long cipher_id = 0, ssl_version = 0; 768 char ch; 769 770 retval = 1; 771 l = rule_str; 772 for (;;) 773 { 774 ch = *l; 775 776 if (ch == '\0') 777 break; /* done */ 778 if (ch == '-') 779 { rule = CIPHER_DEL; l++; } 780 else if (ch == '+') 781 { rule = CIPHER_ORD; l++; } 782 else if (ch == '!') 783 { rule = CIPHER_KILL; l++; } 784 else if (ch == '@') 785 { rule = CIPHER_SPECIAL; l++; } 786 else 787 { rule = CIPHER_ADD; } 788 789 if (ITEM_SEP(ch)) 790 { 791 l++; 792 continue; 793 } 794 795 algorithms = mask = algo_strength = mask_strength = 0; 796 797 start=l; 798 for (;;) 799 { 800 ch = *l; 801 buf = l; 802 buflen = 0; 803#ifndef CHARSET_EBCDIC 804 while ( ((ch >= 'A') && (ch <= 'Z')) || 805 ((ch >= '0') && (ch <= '9')) || 806 ((ch >= 'a') && (ch <= 'z')) || 807 (ch == '-')) 808#else 809 while ( isalnum(ch) || (ch == '-')) 810#endif 811 { 812 ch = *(++l); 813 buflen++; 814 } 815 816 if (buflen == 0) 817 { 818 /* 819 * We hit something we cannot deal with, 820 * it is no command or separator nor 821 * alphanumeric, so we call this an error. 822 */ 823 SSLerr(SSL_F_SSL_CIPHER_PROCESS_RULESTR, 824 SSL_R_INVALID_COMMAND); 825 retval = found = 0; 826 l++; 827 break; 828 } 829 830 if (rule == CIPHER_SPECIAL) 831 { 832 found = 0; /* unused -- avoid compiler warning */ 833 break; /* special treatment */ 834 } 835 836 /* check for multi-part specification */ 837 if (ch == '+') 838 { 839 multi=1; 840 l++; 841 } 842 else 843 multi=0; 844 845 /* 846 * Now search for the cipher alias in the ca_list. Be careful 847 * with the strncmp, because the "buflen" limitation 848 * will make the rule "ADH:SOME" and the cipher 849 * "ADH-MY-CIPHER" look like a match for buflen=3. 850 * So additionally check whether the cipher name found 851 * has the correct length. We can save a strlen() call: 852 * just checking for the '\0' at the right place is 853 * sufficient, we have to strncmp() anyway. (We cannot 854 * use strcmp(), because buf is not '\0' terminated.) 855 */ 856 j = found = 0; 857 cipher_id = 0; 858 ssl_version = 0; 859 while (ca_list[j]) 860 { 861 if (!strncmp(buf, ca_list[j]->name, buflen) && 862 (ca_list[j]->name[buflen] == '\0')) 863 { 864 found = 1; 865 break; 866 } 867 else 868 j++; 869 } 870 if (!found) 871 break; /* ignore this entry */ 872 873 /* New algorithms: 874 * 1 - any old restrictions apply outside new mask 875 * 2 - any new restrictions apply outside old mask 876 * 3 - enforce old & new where masks intersect 877 */ 878 algorithms = (algorithms & ~ca_list[j]->mask) | /* 1 */ 879 (ca_list[j]->algorithms & ~mask) | /* 2 */ 880 (algorithms & ca_list[j]->algorithms); /* 3 */ 881 mask |= ca_list[j]->mask; 882 algo_strength = (algo_strength & ~ca_list[j]->mask_strength) | 883 (ca_list[j]->algo_strength & ~mask_strength) | 884 (algo_strength & ca_list[j]->algo_strength); 885 mask_strength |= ca_list[j]->mask_strength; 886 887 /* explicit ciphersuite found */ 888 if (ca_list[j]->valid) 889 { 890 cipher_id = ca_list[j]->id; 891 ssl_version = ca_list[j]->algorithms & SSL_SSL_MASK; 892 break; 893 } 894 895 if (!multi) break; 896 } 897 898 /* 899 * Ok, we have the rule, now apply it 900 */ 901 if (rule == CIPHER_SPECIAL) 902 { /* special command */ 903 ok = 0; 904 if ((buflen == 8) && 905 !strncmp(buf, "STRENGTH", 8)) 906 ok = ssl_cipher_strength_sort(co_list, 907 head_p, tail_p); 908 else 909 SSLerr(SSL_F_SSL_CIPHER_PROCESS_RULESTR, 910 SSL_R_INVALID_COMMAND); 911 if (ok == 0) 912 retval = 0; 913 /* 914 * We do not support any "multi" options 915 * together with "@", so throw away the 916 * rest of the command, if any left, until 917 * end or ':' is found. 918 */ 919 while ((*l != '\0') && !ITEM_SEP(*l)) 920 l++; 921 } 922 else if (found) 923 { 924 ssl_cipher_apply_rule(cipher_id, ssl_version, algorithms, mask, 925 algo_strength, mask_strength, rule, -1, 926 co_list, head_p, tail_p); 927 } 928 else 929 { 930 while ((*l != '\0') && !ITEM_SEP(*l)) 931 l++; 932 } 933 if (*l == '\0') break; /* done */ 934 } 935 936 return(retval); 937 } 938 939STACK_OF(SSL_CIPHER) *ssl_create_cipher_list(const SSL_METHOD *ssl_method, 940 STACK_OF(SSL_CIPHER) **cipher_list, 941 STACK_OF(SSL_CIPHER) **cipher_list_by_id, 942 const char *rule_str) 943 { 944 int ok, num_of_ciphers, num_of_alias_max, num_of_group_aliases; 945 unsigned long disabled_mask; 946 unsigned long disabled_m256; 947 STACK_OF(SSL_CIPHER) *cipherstack, *tmp_cipher_list; 948 const char *rule_p; 949 CIPHER_ORDER *co_list = NULL, *head = NULL, *tail = NULL, *curr; 950 SSL_CIPHER **ca_list = NULL; 951 952 /* 953 * Return with error if nothing to do. 954 */ 955 if (rule_str == NULL || cipher_list == NULL || cipher_list_by_id == NULL) 956 return NULL; 957 958 /* 959 * To reduce the work to do we only want to process the compiled 960 * in algorithms, so we first get the mask of disabled ciphers. 961 */ 962 { 963 struct disabled_masks d; 964 d = ssl_cipher_get_disabled(); 965 disabled_mask = d.mask; 966 disabled_m256 = d.m256; 967 } 968 969 /* 970 * Now we have to collect the available ciphers from the compiled 971 * in ciphers. We cannot get more than the number compiled in, so 972 * it is used for allocation. 973 */ 974 num_of_ciphers = ssl_method->num_ciphers(); 975#ifdef KSSL_DEBUG 976 printf("ssl_create_cipher_list() for %d ciphers\n", num_of_ciphers); 977#endif /* KSSL_DEBUG */ 978 co_list = (CIPHER_ORDER *)OPENSSL_malloc(sizeof(CIPHER_ORDER) * num_of_ciphers); 979 if (co_list == NULL) 980 { 981 SSLerr(SSL_F_SSL_CREATE_CIPHER_LIST,ERR_R_MALLOC_FAILURE); 982 return(NULL); /* Failure */ 983 } 984 985 ssl_cipher_collect_ciphers(ssl_method, num_of_ciphers, disabled_mask, 986 disabled_m256, co_list, &head, &tail); 987 988 /* 989 * We also need cipher aliases for selecting based on the rule_str. 990 * There might be two types of entries in the rule_str: 1) names 991 * of ciphers themselves 2) aliases for groups of ciphers. 992 * For 1) we need the available ciphers and for 2) the cipher 993 * groups of cipher_aliases added together in one list (otherwise 994 * we would be happy with just the cipher_aliases table). 995 */ 996 num_of_group_aliases = sizeof(cipher_aliases) / sizeof(SSL_CIPHER); 997 num_of_alias_max = num_of_ciphers + num_of_group_aliases + 1; 998 ca_list = 999 (SSL_CIPHER **)OPENSSL_malloc(sizeof(SSL_CIPHER *) * num_of_alias_max); 1000 if (ca_list == NULL) 1001 { 1002 OPENSSL_free(co_list); 1003 SSLerr(SSL_F_SSL_CREATE_CIPHER_LIST,ERR_R_MALLOC_FAILURE); 1004 return(NULL); /* Failure */ 1005 } 1006 ssl_cipher_collect_aliases(ca_list, num_of_group_aliases, 1007 (disabled_mask & disabled_m256), head); 1008 1009 /* 1010 * If the rule_string begins with DEFAULT, apply the default rule 1011 * before using the (possibly available) additional rules. 1012 */ 1013 ok = 1; 1014 rule_p = rule_str; 1015 if (strncmp(rule_str,"DEFAULT",7) == 0) 1016 { 1017 ok = ssl_cipher_process_rulestr(SSL_DEFAULT_CIPHER_LIST, 1018 co_list, &head, &tail, ca_list); 1019 rule_p += 7; 1020 if (*rule_p == ':') 1021 rule_p++; 1022 } 1023 1024 if (ok && (strlen(rule_p) > 0)) 1025 ok = ssl_cipher_process_rulestr(rule_p, co_list, &head, &tail, 1026 ca_list); 1027 1028 OPENSSL_free(ca_list); /* Not needed anymore */ 1029 1030 if (!ok) 1031 { /* Rule processing failure */ 1032 OPENSSL_free(co_list); 1033 return(NULL); 1034 } 1035 /* 1036 * Allocate new "cipherstack" for the result, return with error 1037 * if we cannot get one. 1038 */ 1039 if ((cipherstack = sk_SSL_CIPHER_new_null()) == NULL) 1040 { 1041 OPENSSL_free(co_list); 1042 return(NULL); 1043 } 1044 1045 /* 1046 * The cipher selection for the list is done. The ciphers are added 1047 * to the resulting precedence to the STACK_OF(SSL_CIPHER). 1048 */ 1049 for (curr = head; curr != NULL; curr = curr->next) 1050 { 1051 if (curr->active) 1052 { 1053 sk_SSL_CIPHER_push(cipherstack, curr->cipher); 1054#ifdef CIPHER_DEBUG 1055 printf("<%s>\n",curr->cipher->name); 1056#endif 1057 } 1058 } 1059 OPENSSL_free(co_list); /* Not needed any longer */ 1060 1061 tmp_cipher_list = sk_SSL_CIPHER_dup(cipherstack); 1062 if (tmp_cipher_list == NULL) 1063 { 1064 sk_SSL_CIPHER_free(cipherstack); 1065 return NULL; 1066 } 1067 if (*cipher_list != NULL) 1068 sk_SSL_CIPHER_free(*cipher_list); 1069 *cipher_list = cipherstack; 1070 if (*cipher_list_by_id != NULL) 1071 sk_SSL_CIPHER_free(*cipher_list_by_id); 1072 *cipher_list_by_id = tmp_cipher_list; 1073 sk_SSL_CIPHER_set_cmp_func(*cipher_list_by_id,ssl_cipher_ptr_id_cmp); 1074 1075 return(cipherstack); 1076 } 1077 1078char *SSL_CIPHER_description(SSL_CIPHER *cipher, char *buf, int len) 1079 { 1080 int is_export,pkl,kl; 1081 const char *ver,*exp_str; 1082 const char *kx,*au,*enc,*mac; 1083 unsigned long alg,alg2,alg_s; 1084#ifdef KSSL_DEBUG 1085 static const char *format="%-23s %s Kx=%-8s Au=%-4s Enc=%-9s Mac=%-4s%s AL=%lx\n"; 1086#else 1087 static const char *format="%-23s %s Kx=%-8s Au=%-4s Enc=%-9s Mac=%-4s%s\n"; 1088#endif /* KSSL_DEBUG */ 1089 1090 alg=cipher->algorithms; 1091 alg_s=cipher->algo_strength; 1092 alg2=cipher->algorithm2; 1093 1094 is_export=SSL_C_IS_EXPORT(cipher); 1095 pkl=SSL_C_EXPORT_PKEYLENGTH(cipher); 1096 kl=SSL_C_EXPORT_KEYLENGTH(cipher); 1097 exp_str=is_export?" export":""; 1098 1099 if (alg & SSL_SSLV2) 1100 ver="SSLv2"; 1101 else if (alg & SSL_SSLV3) 1102 ver="SSLv3"; 1103 else 1104 ver="unknown"; 1105 1106 switch (alg&SSL_MKEY_MASK) 1107 { 1108 case SSL_kRSA: 1109 kx=is_export?(pkl == 512 ? "RSA(512)" : "RSA(1024)"):"RSA"; 1110 break; 1111 case SSL_kDHr: 1112 kx="DH/RSA"; 1113 break; 1114 case SSL_kDHd: 1115 kx="DH/DSS"; 1116 break; 1117 case SSL_kKRB5: /* VRS */ 1118 case SSL_KRB5: /* VRS */ 1119 kx="KRB5"; 1120 break; 1121 case SSL_kFZA: 1122 kx="Fortezza"; 1123 break; 1124 case SSL_kEDH: 1125 kx=is_export?(pkl == 512 ? "DH(512)" : "DH(1024)"):"DH"; 1126 break; 1127 case SSL_kECDH: 1128 case SSL_kECDHE: 1129 kx=is_export?"ECDH(<=163)":"ECDH"; 1130 break; 1131 default: 1132 kx="unknown"; 1133 } 1134 1135 switch (alg&SSL_AUTH_MASK) 1136 { 1137 case SSL_aRSA: 1138 au="RSA"; 1139 break; 1140 case SSL_aDSS: 1141 au="DSS"; 1142 break; 1143 case SSL_aDH: 1144 au="DH"; 1145 break; 1146 case SSL_aKRB5: /* VRS */ 1147 case SSL_KRB5: /* VRS */ 1148 au="KRB5"; 1149 break; 1150 case SSL_aFZA: 1151 case SSL_aNULL: 1152 au="None"; 1153 break; 1154 case SSL_aECDSA: 1155 au="ECDSA"; 1156 break; 1157 default: 1158 au="unknown"; 1159 break; 1160 } 1161 1162 switch (alg&SSL_ENC_MASK) 1163 { 1164 case SSL_DES: 1165 enc=(is_export && kl == 5)?"DES(40)":"DES(56)"; 1166 break; 1167 case SSL_3DES: 1168 enc="3DES(168)"; 1169 break; 1170 case SSL_RC4: 1171 enc=is_export?(kl == 5 ? "RC4(40)" : "RC4(56)") 1172 :((alg2&SSL2_CF_8_BYTE_ENC)?"RC4(64)":"RC4(128)"); 1173 break; 1174 case SSL_RC2: 1175 enc=is_export?(kl == 5 ? "RC2(40)" : "RC2(56)"):"RC2(128)"; 1176 break; 1177 case SSL_IDEA: 1178 enc="IDEA(128)"; 1179 break; 1180 case SSL_eFZA: 1181 enc="Fortezza"; 1182 break; 1183 case SSL_eNULL: 1184 enc="None"; 1185 break; 1186 case SSL_AES: 1187 switch(cipher->strength_bits) 1188 { 1189 case 128: enc="AES(128)"; break; 1190 case 192: enc="AES(192)"; break; 1191 case 256: enc="AES(256)"; break; 1192 default: enc="AES(?""?""?)"; break; 1193 } 1194 break; 1195 case SSL_CAMELLIA: 1196 switch(cipher->strength_bits) 1197 { 1198 case 128: enc="Camellia(128)"; break; 1199 case 256: enc="Camellia(256)"; break; 1200 default: enc="Camellia(?""?""?)"; break; 1201 } 1202 break; 1203 1204 default: 1205 enc="unknown"; 1206 break; 1207 } 1208 1209 switch (alg&SSL_MAC_MASK) 1210 { 1211 case SSL_MD5: 1212 mac="MD5"; 1213 break; 1214 case SSL_SHA1: 1215 mac="SHA1"; 1216 break; 1217 default: 1218 mac="unknown"; 1219 break; 1220 } 1221 1222 if (buf == NULL) 1223 { 1224 len=128; 1225 buf=OPENSSL_malloc(len); 1226 if (buf == NULL) return("OPENSSL_malloc Error"); 1227 } 1228 else if (len < 128) 1229 return("Buffer too small"); 1230 1231#ifdef KSSL_DEBUG 1232 BIO_snprintf(buf,len,format,cipher->name,ver,kx,au,enc,mac,exp_str,alg); 1233#else 1234 BIO_snprintf(buf,len,format,cipher->name,ver,kx,au,enc,mac,exp_str); 1235#endif /* KSSL_DEBUG */ 1236 return(buf); 1237 } 1238 1239char *SSL_CIPHER_get_version(const SSL_CIPHER *c) 1240 { 1241 int i; 1242 1243 if (c == NULL) return("(NONE)"); 1244 i=(int)(c->id>>24L); 1245 if (i == 3) 1246 return("TLSv1/SSLv3"); 1247 else if (i == 2) 1248 return("SSLv2"); 1249 else 1250 return("unknown"); 1251 } 1252 1253/* return the actual cipher being used */ 1254const char *SSL_CIPHER_get_name(const SSL_CIPHER *c) 1255 { 1256 if (c != NULL) 1257 return(c->name); 1258 return("(NONE)"); 1259 } 1260 1261/* number of bits for symmetric cipher */ 1262int SSL_CIPHER_get_bits(const SSL_CIPHER *c, int *alg_bits) 1263 { 1264 int ret=0; 1265 1266 if (c != NULL) 1267 { 1268 if (alg_bits != NULL) *alg_bits = c->alg_bits; 1269 ret = c->strength_bits; 1270 } 1271 return(ret); 1272 } 1273 1274SSL_COMP *ssl3_comp_find(STACK_OF(SSL_COMP) *sk, int n) 1275 { 1276 SSL_COMP *ctmp; 1277 int i,nn; 1278 1279 if ((n == 0) || (sk == NULL)) return(NULL); 1280 nn=sk_SSL_COMP_num(sk); 1281 for (i=0; i<nn; i++) 1282 { 1283 ctmp=sk_SSL_COMP_value(sk,i); 1284 if (ctmp->id == n) 1285 return(ctmp); 1286 } 1287 return(NULL); 1288 } 1289 1290#ifdef OPENSSL_NO_COMP 1291void *SSL_COMP_get_compression_methods(void) 1292 { 1293 return NULL; 1294 } 1295int SSL_COMP_add_compression_method(int id, void *cm) 1296 { 1297 return 1; 1298 } 1299 1300const char *SSL_COMP_get_name(const void *comp) 1301 { 1302 return NULL; 1303 } 1304#else 1305STACK_OF(SSL_COMP) *SSL_COMP_get_compression_methods(void) 1306 { 1307 load_builtin_compressions(); 1308 return(ssl_comp_methods); 1309 } 1310 1311int SSL_COMP_add_compression_method(int id, COMP_METHOD *cm) 1312 { 1313 SSL_COMP *comp; 1314 1315 if (cm == NULL || cm->type == NID_undef) 1316 return 1; 1317 1318 /* According to draft-ietf-tls-compression-04.txt, the 1319 compression number ranges should be the following: 1320 1321 0 to 63: methods defined by the IETF 1322 64 to 192: external party methods assigned by IANA 1323 193 to 255: reserved for private use */ 1324 if (id < 193 || id > 255) 1325 { 1326 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD,SSL_R_COMPRESSION_ID_NOT_WITHIN_PRIVATE_RANGE); 1327 return 0; 1328 } 1329 1330 MemCheck_off(); 1331 comp=(SSL_COMP *)OPENSSL_malloc(sizeof(SSL_COMP)); 1332 comp->id=id; 1333 comp->method=cm; 1334 load_builtin_compressions(); 1335 if (ssl_comp_methods 1336 && !sk_SSL_COMP_find(ssl_comp_methods,comp)) 1337 { 1338 OPENSSL_free(comp); 1339 MemCheck_on(); 1340 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD,SSL_R_DUPLICATE_COMPRESSION_ID); 1341 return(1); 1342 } 1343 else if ((ssl_comp_methods == NULL) 1344 || !sk_SSL_COMP_push(ssl_comp_methods,comp)) 1345 { 1346 OPENSSL_free(comp); 1347 MemCheck_on(); 1348 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD,ERR_R_MALLOC_FAILURE); 1349 return(1); 1350 } 1351 else 1352 { 1353 MemCheck_on(); 1354 return(0); 1355 } 1356 } 1357 1358const char *SSL_COMP_get_name(const COMP_METHOD *comp) 1359 { 1360 if (comp) 1361 return comp->name; 1362 return NULL; 1363 } 1364 1365#endif 1366