2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
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.
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).
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.
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
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)"
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
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.]
58 /* ====================================================================
59 * Copyright (c) 1998-2007 The OpenSSL Project. All rights reserved.
61 * Redistribution and use in source and binary forms, with or without
62 * modification, are permitted provided that the following conditions
65 * 1. Redistributions of source code must retain the above copyright
66 * notice, this list of conditions and the following disclaimer.
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
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/)"
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.
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.
87 * 6. Redistributions of any form whatsoever must retain the following
89 * "This product includes software developed by the OpenSSL Project
90 * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
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 * ====================================================================
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).
111 /* ====================================================================
112 * Copyright 2005 Nokia. All rights reserved.
114 * The portions of the attached software ("Contribution") is developed by
115 * Nokia Corporation and is licensed pursuant to the OpenSSL open source
118 * The Contribution, originally written by Mika Kousa and Pasi Eronen of
119 * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites
120 * support (see RFC 4279) to OpenSSL.
122 * No patent licenses or other rights except those expressly stated in
123 * the OpenSSL open source license shall be deemed granted or received
124 * expressly, by implication, estoppel, or otherwise.
126 * No assurances are provided by Nokia that the Contribution does not
127 * infringe the patent or other intellectual property rights of any third
128 * party or that the license provides you with all the necessary rights
129 * to make use of the Contribution.
131 * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN
132 * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA
133 * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY
134 * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR
139 #include "ssl_locl.h"
140 #ifndef OPENSSL_NO_COMP
141 #include <openssl/comp.h>
143 #include <openssl/evp.h>
144 #include <openssl/hmac.h>
145 #include <openssl/md5.h>
147 #include <openssl/des.h>
150 /* seed1 through seed5 are virtually concatenated */
151 static int tls1_P_hash(const EVP_MD *md, const unsigned char *sec,
153 const void *seed1, int seed1_len,
154 const void *seed2, int seed2_len,
155 const void *seed3, int seed3_len,
156 const void *seed4, int seed4_len,
157 const void *seed5, int seed5_len,
158 unsigned char *out, int olen)
164 unsigned char A1[EVP_MAX_MD_SIZE];
168 chunk=EVP_MD_size(md);
169 OPENSSL_assert(chunk >= 0);
172 HMAC_CTX_init(&ctx_tmp);
173 if (!HMAC_Init_ex(&ctx,sec,sec_len,md, NULL))
175 if (!HMAC_Init_ex(&ctx_tmp,sec,sec_len,md, NULL))
177 if (seed1 != NULL && !HMAC_Update(&ctx,seed1,seed1_len))
179 if (seed2 != NULL && !HMAC_Update(&ctx,seed2,seed2_len))
181 if (seed3 != NULL && !HMAC_Update(&ctx,seed3,seed3_len))
183 if (seed4 != NULL && !HMAC_Update(&ctx,seed4,seed4_len))
185 if (seed5 != NULL && !HMAC_Update(&ctx,seed5,seed5_len))
187 if (!HMAC_Final(&ctx,A1,&A1_len))
192 if (!HMAC_Init_ex(&ctx,NULL,0,NULL,NULL)) /* re-init */
194 if (!HMAC_Init_ex(&ctx_tmp,NULL,0,NULL,NULL)) /* re-init */
196 if (!HMAC_Update(&ctx,A1,A1_len))
198 if (!HMAC_Update(&ctx_tmp,A1,A1_len))
200 if (seed1 != NULL && !HMAC_Update(&ctx,seed1,seed1_len))
202 if (seed2 != NULL && !HMAC_Update(&ctx,seed2,seed2_len))
204 if (seed3 != NULL && !HMAC_Update(&ctx,seed3,seed3_len))
206 if (seed4 != NULL && !HMAC_Update(&ctx,seed4,seed4_len))
208 if (seed5 != NULL && !HMAC_Update(&ctx,seed5,seed5_len))
213 if (!HMAC_Final(&ctx,out,&j))
217 if (!HMAC_Final(&ctx_tmp,A1,&A1_len)) /* calc the next A1 value */
222 if (!HMAC_Final(&ctx,A1,&A1_len))
230 HMAC_CTX_cleanup(&ctx);
231 HMAC_CTX_cleanup(&ctx_tmp);
232 OPENSSL_cleanse(A1,sizeof(A1));
236 /* seed1 through seed5 are virtually concatenated */
237 static int tls1_PRF(long digest_mask,
238 const void *seed1, int seed1_len,
239 const void *seed2, int seed2_len,
240 const void *seed3, int seed3_len,
241 const void *seed4, int seed4_len,
242 const void *seed5, int seed5_len,
243 const unsigned char *sec, int slen,
245 unsigned char *out2, int olen)
248 const unsigned char *S1;
253 /* Count number of digests and partition sec evenly */
255 for (idx=0;ssl_get_handshake_digest(idx,&m,&md);idx++) {
256 if ((m<<TLS1_PRF_DGST_SHIFT) & digest_mask) count++;
261 for (idx=0;ssl_get_handshake_digest(idx,&m,&md);idx++) {
262 if ((m<<TLS1_PRF_DGST_SHIFT) & digest_mask) {
264 SSLerr(SSL_F_TLS1_PRF,
265 SSL_R_UNSUPPORTED_DIGEST_TYPE);
268 if (!tls1_P_hash(md ,S1,len+(slen&1),
269 seed1,seed1_len,seed2,seed2_len,seed3,seed3_len,seed4,seed4_len,seed5,seed5_len,
273 for (i=0; i<olen; i++)
283 static int tls1_generate_key_block(SSL *s, unsigned char *km,
284 unsigned char *tmp, int num)
287 ret = tls1_PRF(s->s3->tmp.new_cipher->algorithm2,
288 TLS_MD_KEY_EXPANSION_CONST,TLS_MD_KEY_EXPANSION_CONST_SIZE,
289 s->s3->server_random,SSL3_RANDOM_SIZE,
290 s->s3->client_random,SSL3_RANDOM_SIZE,
292 s->session->master_key,s->session->master_key_length,
295 printf("tls1_generate_key_block() ==> %d byte master_key =\n\t",
296 s->session->master_key_length);
299 for (i=0; i < s->session->master_key_length; i++)
301 printf("%02X", s->session->master_key[i]);
304 #endif /* KSSL_DEBUG */
308 int tls1_change_cipher_state(SSL *s, int which)
310 static const unsigned char empty[]="";
311 unsigned char *p,*mac_secret;
312 unsigned char *exp_label;
313 unsigned char tmp1[EVP_MAX_KEY_LENGTH];
314 unsigned char tmp2[EVP_MAX_KEY_LENGTH];
315 unsigned char iv1[EVP_MAX_IV_LENGTH*2];
316 unsigned char iv2[EVP_MAX_IV_LENGTH*2];
317 unsigned char *ms,*key,*iv;
321 #ifndef OPENSSL_NO_COMP
322 const SSL_COMP *comp;
326 int *mac_secret_size;
329 int is_export,n,i,j,k,exp_label_len,cl;
332 is_export=SSL_C_IS_EXPORT(s->s3->tmp.new_cipher);
333 c=s->s3->tmp.new_sym_enc;
334 m=s->s3->tmp.new_hash;
335 mac_type = s->s3->tmp.new_mac_pkey_type;
336 #ifndef OPENSSL_NO_COMP
337 comp=s->s3->tmp.new_compression;
341 printf("tls1_change_cipher_state(which= %d) w/\n", which);
342 printf("\talg= %ld/%ld, comp= %p\n",
343 s->s3->tmp.new_cipher->algorithm_mkey,
344 s->s3->tmp.new_cipher->algorithm_auth,
346 printf("\tevp_cipher == %p ==? &d_cbc_ede_cipher3\n", c);
347 printf("\tevp_cipher: nid, blksz= %d, %d, keylen=%d, ivlen=%d\n",
348 c->nid,c->block_size,c->key_len,c->iv_len);
349 printf("\tkey_block: len= %d, data= ", s->s3->tmp.key_block_length);
352 for (i=0; i<s->s3->tmp.key_block_length; i++)
353 printf("%02x", s->s3->tmp.key_block[i]); printf("\n");
355 #endif /* KSSL_DEBUG */
357 if (which & SSL3_CC_READ)
359 if (s->s3->tmp.new_cipher->algorithm2 & TLS1_STREAM_MAC)
360 s->mac_flags |= SSL_MAC_FLAG_READ_MAC_STREAM;
362 s->mac_flags &= ~SSL_MAC_FLAG_READ_MAC_STREAM;
364 if (s->enc_read_ctx != NULL)
366 else if ((s->enc_read_ctx=OPENSSL_malloc(sizeof(EVP_CIPHER_CTX))) == NULL)
369 /* make sure it's intialized in case we exit later with an error */
370 EVP_CIPHER_CTX_init(s->enc_read_ctx);
372 mac_ctx=ssl_replace_hash(&s->read_hash,NULL);
373 #ifndef OPENSSL_NO_COMP
374 if (s->expand != NULL)
376 COMP_CTX_free(s->expand);
381 s->expand=COMP_CTX_new(comp->method);
382 if (s->expand == NULL)
384 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE,SSL_R_COMPRESSION_LIBRARY_ERROR);
387 if (s->s3->rrec.comp == NULL)
388 s->s3->rrec.comp=(unsigned char *)
389 OPENSSL_malloc(SSL3_RT_MAX_ENCRYPTED_LENGTH);
390 if (s->s3->rrec.comp == NULL)
394 /* this is done by dtls1_reset_seq_numbers for DTLS1_VERSION */
395 if (s->version != DTLS1_VERSION)
396 memset(&(s->s3->read_sequence[0]),0,8);
397 mac_secret= &(s->s3->read_mac_secret[0]);
398 mac_secret_size=&(s->s3->read_mac_secret_size);
402 if (s->s3->tmp.new_cipher->algorithm2 & TLS1_STREAM_MAC)
403 s->mac_flags |= SSL_MAC_FLAG_WRITE_MAC_STREAM;
405 s->mac_flags &= ~SSL_MAC_FLAG_WRITE_MAC_STREAM;
406 if (s->enc_write_ctx != NULL)
408 else if ((s->enc_write_ctx=OPENSSL_malloc(sizeof(EVP_CIPHER_CTX))) == NULL)
411 /* make sure it's intialized in case we exit later with an error */
412 EVP_CIPHER_CTX_init(s->enc_write_ctx);
413 dd= s->enc_write_ctx;
414 mac_ctx = ssl_replace_hash(&s->write_hash,NULL);
415 #ifndef OPENSSL_NO_COMP
416 if (s->compress != NULL)
418 COMP_CTX_free(s->compress);
423 s->compress=COMP_CTX_new(comp->method);
424 if (s->compress == NULL)
426 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE,SSL_R_COMPRESSION_LIBRARY_ERROR);
431 /* this is done by dtls1_reset_seq_numbers for DTLS1_VERSION */
432 if (s->version != DTLS1_VERSION)
433 memset(&(s->s3->write_sequence[0]),0,8);
434 mac_secret= &(s->s3->write_mac_secret[0]);
435 mac_secret_size = &(s->s3->write_mac_secret_size);
439 EVP_CIPHER_CTX_cleanup(dd);
441 p=s->s3->tmp.key_block;
442 i=*mac_secret_size=s->s3->tmp.new_mac_secret_size;
444 cl=EVP_CIPHER_key_length(c);
445 j=is_export ? (cl < SSL_C_EXPORT_KEYLENGTH(s->s3->tmp.new_cipher) ?
446 cl : SSL_C_EXPORT_KEYLENGTH(s->s3->tmp.new_cipher)) : cl;
447 /* Was j=(exp)?5:EVP_CIPHER_key_length(c); */
448 k=EVP_CIPHER_iv_length(c);
449 if ( (which == SSL3_CHANGE_CIPHER_CLIENT_WRITE) ||
450 (which == SSL3_CHANGE_CIPHER_SERVER_READ))
453 key= &(p[ n]); n+=j+j;
454 iv= &(p[ n]); n+=k+k;
455 exp_label=(unsigned char *)TLS_MD_CLIENT_WRITE_KEY_CONST;
456 exp_label_len=TLS_MD_CLIENT_WRITE_KEY_CONST_SIZE;
462 ms= &(p[ n]); n+=i+j;
463 key= &(p[ n]); n+=j+k;
465 exp_label=(unsigned char *)TLS_MD_SERVER_WRITE_KEY_CONST;
466 exp_label_len=TLS_MD_SERVER_WRITE_KEY_CONST_SIZE;
470 if (n > s->s3->tmp.key_block_length)
472 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE,ERR_R_INTERNAL_ERROR);
476 memcpy(mac_secret,ms,i);
477 mac_key = EVP_PKEY_new_mac_key(mac_type, NULL,
478 mac_secret,*mac_secret_size);
479 EVP_DigestSignInit(mac_ctx,NULL,m,NULL,mac_key);
480 EVP_PKEY_free(mac_key);
482 printf("which = %04X\nmac key=",which);
483 { int z; for (z=0; z<i; z++) printf("%02X%c",ms[z],((z+1)%16)?' ':'\n'); }
487 /* In here I set both the read and write key/iv to the
488 * same value since only the correct one will be used :-).
490 if (!tls1_PRF(s->s3->tmp.new_cipher->algorithm2,
491 exp_label,exp_label_len,
492 s->s3->client_random,SSL3_RANDOM_SIZE,
493 s->s3->server_random,SSL3_RANDOM_SIZE,
495 key,j,tmp1,tmp2,EVP_CIPHER_key_length(c)))
501 if (!tls1_PRF(s->s3->tmp.new_cipher->algorithm2,
502 TLS_MD_IV_BLOCK_CONST,TLS_MD_IV_BLOCK_CONST_SIZE,
503 s->s3->client_random,SSL3_RANDOM_SIZE,
504 s->s3->server_random,SSL3_RANDOM_SIZE,
506 empty,0,iv1,iv2,k*2))
515 s->session->key_arg_length=0;
519 printf("EVP_CipherInit_ex(dd,c,key=,iv=,which)\n");
520 printf("\tkey= "); for (i=0; i<c->key_len; i++) printf("%02x", key[i]);
522 printf("\t iv= "); for (i=0; i<c->iv_len; i++) printf("%02x", iv[i]);
525 #endif /* KSSL_DEBUG */
527 EVP_CipherInit_ex(dd,c,NULL,key,iv,(which & SSL3_CC_WRITE));
529 printf("which = %04X\nkey=",which);
530 { int z; for (z=0; z<EVP_CIPHER_key_length(c); z++) printf("%02X%c",key[z],((z+1)%16)?' ':'\n'); }
532 { int z; for (z=0; z<k; z++) printf("%02X%c",iv[z],((z+1)%16)?' ':'\n'); }
536 OPENSSL_cleanse(tmp1,sizeof(tmp1));
537 OPENSSL_cleanse(tmp2,sizeof(tmp1));
538 OPENSSL_cleanse(iv1,sizeof(iv1));
539 OPENSSL_cleanse(iv2,sizeof(iv2));
542 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE,ERR_R_MALLOC_FAILURE);
547 int tls1_setup_key_block(SSL *s)
549 unsigned char *p1,*p2=NULL;
554 int mac_type= NID_undef,mac_secret_size=0;
558 printf ("tls1_setup_key_block()\n");
559 #endif /* KSSL_DEBUG */
561 if (s->s3->tmp.key_block_length != 0)
564 if (!ssl_cipher_get_evp(s->session,&c,&hash,&mac_type,&mac_secret_size,&comp))
566 SSLerr(SSL_F_TLS1_SETUP_KEY_BLOCK,SSL_R_CIPHER_OR_HASH_UNAVAILABLE);
570 s->s3->tmp.new_sym_enc=c;
571 s->s3->tmp.new_hash=hash;
572 s->s3->tmp.new_mac_pkey_type = mac_type;
573 s->s3->tmp.new_mac_secret_size = mac_secret_size;
574 num=EVP_CIPHER_key_length(c)+mac_secret_size+EVP_CIPHER_iv_length(c);
577 ssl3_cleanup_key_block(s);
579 if ((p1=(unsigned char *)OPENSSL_malloc(num)) == NULL)
581 SSLerr(SSL_F_TLS1_SETUP_KEY_BLOCK,ERR_R_MALLOC_FAILURE);
585 s->s3->tmp.key_block_length=num;
586 s->s3->tmp.key_block=p1;
588 if ((p2=(unsigned char *)OPENSSL_malloc(num)) == NULL)
590 SSLerr(SSL_F_TLS1_SETUP_KEY_BLOCK,ERR_R_MALLOC_FAILURE);
595 printf("client random\n");
596 { int z; for (z=0; z<SSL3_RANDOM_SIZE; z++) printf("%02X%c",s->s3->client_random[z],((z+1)%16)?' ':'\n'); }
597 printf("server random\n");
598 { int z; for (z=0; z<SSL3_RANDOM_SIZE; z++) printf("%02X%c",s->s3->server_random[z],((z+1)%16)?' ':'\n'); }
599 printf("pre-master\n");
600 { int z; for (z=0; z<s->session->master_key_length; z++) printf("%02X%c",s->session->master_key[z],((z+1)%16)?' ':'\n'); }
602 if (!tls1_generate_key_block(s,p1,p2,num))
605 printf("\nkey block\n");
606 { int z; for (z=0; z<num; z++) printf("%02X%c",p1[z],((z+1)%16)?' ':'\n'); }
609 if (!(s->options & SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS))
611 /* enable vulnerability countermeasure for CBC ciphers with
612 * known-IV problem (http://www.openssl.org/~bodo/tls-cbc.txt)
614 s->s3->need_empty_fragments = 1;
616 if (s->session->cipher != NULL)
618 if (s->session->cipher->algorithm_enc == SSL_eNULL)
619 s->s3->need_empty_fragments = 0;
621 #ifndef OPENSSL_NO_RC4
622 if (s->session->cipher->algorithm_enc == SSL_RC4)
623 s->s3->need_empty_fragments = 0;
632 OPENSSL_cleanse(p2,num);
638 /* tls1_enc encrypts/decrypts the record in |s->wrec| / |s->rrec|, respectively.
641 * 0: (in non-constant time) if the record is publically invalid (i.e. too
643 * 1: if the record's padding is valid / the encryption was successful.
644 * -1: if the record's padding/AEAD-authenticator is invalid or, if sending,
645 * an internal error occured.
647 int tls1_enc(SSL *s, int send)
652 int bs,i,j,k,pad=0,ret,mac_size=0;
654 const EVP_CIPHER *enc;
658 if (EVP_MD_CTX_md(s->write_hash))
660 n=EVP_MD_CTX_size(s->write_hash);
661 OPENSSL_assert(n >= 0);
665 if (s->enc_write_ctx == NULL)
668 enc=EVP_CIPHER_CTX_cipher(s->enc_write_ctx);
672 if (EVP_MD_CTX_md(s->read_hash))
674 n=EVP_MD_CTX_size(s->read_hash);
675 OPENSSL_assert(n >= 0);
679 if (s->enc_read_ctx == NULL)
682 enc=EVP_CIPHER_CTX_cipher(s->enc_read_ctx);
686 printf("tls1_enc(%d)\n", send);
687 #endif /* KSSL_DEBUG */
689 if ((s->session == NULL) || (ds == NULL) || (enc == NULL))
691 memmove(rec->data,rec->input,rec->length);
692 rec->input=rec->data;
698 bs=EVP_CIPHER_block_size(ds->cipher);
700 if ((bs != 1) && send)
704 /* Add weird padding of upto 256 bytes */
706 /* we need to add 'i' padding bytes of value j */
708 if (s->options & SSL_OP_TLS_BLOCK_PADDING_BUG)
710 if (s->s3->flags & TLS1_FLAGS_TLS_PADDING_BUG)
713 for (k=(int)l; k<(int)(l+i); k++)
722 printf("EVP_Cipher(ds=%p,rec->data=%p,rec->input=%p,l=%ld) ==>\n",
723 ds,rec->data,rec->input,l);
724 printf("\tEVP_CIPHER_CTX: %d buf_len, %d key_len [%d %d], %d iv_len\n",
725 ds->buf_len, ds->cipher->key_len,
726 DES_KEY_SZ, DES_SCHEDULE_SZ,
729 for (i=0; i<ds->cipher->iv_len; i++) printf("%02X", ds->iv[i]);
731 printf("\trec->input=");
732 for (ui=0; ui<l; ui++) printf(" %02x", rec->input[ui]);
735 #endif /* KSSL_DEBUG */
739 if (l == 0 || l%bs != 0)
743 EVP_Cipher(ds,rec->data,rec->input,l);
748 printf("\trec->data=");
750 printf(" %02x", rec->data[i]); printf("\n");
752 #endif /* KSSL_DEBUG */
755 if (EVP_MD_CTX_md(s->read_hash) != NULL)
756 mac_size = EVP_MD_CTX_size(s->read_hash);
757 if ((bs != 1) && !send)
758 ret = tls1_cbc_remove_padding(s, rec, bs, mac_size);
765 int tls1_cert_verify_mac(SSL *s, int md_nid, unsigned char *out)
768 EVP_MD_CTX ctx, *d=NULL;
771 if (s->s3->handshake_buffer)
772 if (!ssl3_digest_cached_records(s))
775 for (i=0;i<SSL_MAX_DIGEST;i++)
777 if (s->s3->handshake_dgst[i]&&EVP_MD_CTX_type(s->s3->handshake_dgst[i])==md_nid)
779 d=s->s3->handshake_dgst[i];
784 SSLerr(SSL_F_TLS1_CERT_VERIFY_MAC,SSL_R_NO_REQUIRED_DIGEST);
788 EVP_MD_CTX_init(&ctx);
789 EVP_MD_CTX_copy_ex(&ctx,d);
790 EVP_DigestFinal_ex(&ctx,out,&ret);
791 EVP_MD_CTX_cleanup(&ctx);
795 int tls1_final_finish_mac(SSL *s,
796 const char *str, int slen, unsigned char *out)
800 unsigned char buf[2*EVP_MAX_MD_SIZE];
801 unsigned char *q,buf2[12];
809 if (s->s3->handshake_buffer)
810 if (!ssl3_digest_cached_records(s))
813 EVP_MD_CTX_init(&ctx);
815 for (idx=0;ssl_get_handshake_digest(idx,&mask,&md);idx++)
817 if (mask & s->s3->tmp.new_cipher->algorithm2)
819 int hashsize = EVP_MD_size(md);
820 if (hashsize < 0 || hashsize > (int)(sizeof buf - (size_t)(q-buf)))
822 /* internal error: 'buf' is too small for this cipersuite! */
827 EVP_MD_CTX_copy_ex(&ctx,s->s3->handshake_dgst[idx]);
828 EVP_DigestFinal_ex(&ctx,q,&i);
829 if (i != (unsigned int)hashsize) /* can't really happen */
836 if (!tls1_PRF(s->s3->tmp.new_cipher->algorithm2,
837 str,slen, buf,(int)(q-buf), NULL,0, NULL,0, NULL,0,
838 s->session->master_key,s->session->master_key_length,
839 out,buf2,sizeof buf2))
841 EVP_MD_CTX_cleanup(&ctx);
849 int tls1_mac(SSL *ssl, unsigned char *md, int send)
856 EVP_MD_CTX hmac, *mac_ctx;
857 unsigned char header[13];
858 int stream_mac = (send?(ssl->mac_flags & SSL_MAC_FLAG_WRITE_MAC_STREAM):(ssl->mac_flags&SSL_MAC_FLAG_READ_MAC_STREAM));
863 rec= &(ssl->s3->wrec);
864 seq= &(ssl->s3->write_sequence[0]);
865 hash=ssl->write_hash;
869 rec= &(ssl->s3->rrec);
870 seq= &(ssl->s3->read_sequence[0]);
874 t=EVP_MD_CTX_size(hash);
875 OPENSSL_assert(t >= 0);
878 /* I should fix this up TLS TLS TLS TLS TLS XXXXXXXX */
885 EVP_MD_CTX_copy(&hmac,hash);
889 if (ssl->version == DTLS1_VERSION || ssl->version == DTLS1_BAD_VER)
891 unsigned char dtlsseq[8],*p=dtlsseq;
893 s2n(send?ssl->d1->w_epoch:ssl->d1->r_epoch, p);
894 memcpy (p,&seq[2],6);
896 memcpy(header, dtlsseq, 8);
899 memcpy(header, seq, 8);
902 header[9]=(unsigned char)(ssl->version>>8);
903 header[10]=(unsigned char)(ssl->version);
904 header[11]=(rec->length)>>8;
905 header[12]=(rec->length)&0xff;
908 EVP_CIPHER_CTX_mode(ssl->enc_read_ctx) == EVP_CIPH_CBC_MODE &&
909 ssl3_cbc_record_digest_supported(mac_ctx))
911 /* This is a CBC-encrypted record. We must avoid leaking any
912 * timing-side channel information about how many blocks of
913 * data we are hashing because that gives an attacker a
915 ssl3_cbc_digest_record(
919 rec->length + md_size, rec->orig_len,
920 ssl->s3->read_mac_secret,
921 ssl->s3->read_mac_secret_size,
926 EVP_DigestSignUpdate(mac_ctx,header,sizeof(header));
927 EVP_DigestSignUpdate(mac_ctx,rec->input,rec->length);
928 t=EVP_DigestSignFinal(mac_ctx,md,&md_size);
929 OPENSSL_assert(t > 0);
933 EVP_MD_CTX_cleanup(&hmac);
936 {unsigned int z; for (z=0; z<md_size; z++) printf("%02X ",mac_sec[z]); printf("\n"); }
938 {int z; for (z=0; z<8; z++) printf("%02X ",seq[z]); printf("\n"); }
940 {int z; for (z=0; z<5; z++) printf("%02X ",buf[z]); printf("\n"); }
942 {unsigned int z; for (z=0; z<rec->length; z++) printf("%02X ",buf[z]); printf("\n"); }
945 if (ssl->version != DTLS1_VERSION && ssl->version != DTLS1_BAD_VER)
950 if (seq[i] != 0) break;
955 {unsigned int z; for (z=0; z<md_size; z++) printf("%02X ",md[z]); printf("\n"); }
960 int tls1_generate_master_secret(SSL *s, unsigned char *out, unsigned char *p,
963 unsigned char buff[SSL_MAX_MASTER_KEY_LENGTH];
964 const void *co = NULL, *so = NULL;
965 int col = 0, sol = 0;
968 printf ("tls1_generate_master_secret(%p,%p, %p, %d)\n", s,out, p,len);
969 #endif /* KSSL_DEBUG */
971 #ifdef TLSEXT_TYPE_opaque_prf_input
972 if (s->s3->client_opaque_prf_input != NULL && s->s3->server_opaque_prf_input != NULL &&
973 s->s3->client_opaque_prf_input_len > 0 &&
974 s->s3->client_opaque_prf_input_len == s->s3->server_opaque_prf_input_len)
976 co = s->s3->client_opaque_prf_input;
977 col = s->s3->server_opaque_prf_input_len;
978 so = s->s3->server_opaque_prf_input;
979 sol = s->s3->client_opaque_prf_input_len; /* must be same as col (see draft-rescorla-tls-opaque-prf-input-00.txt, section 3.1) */
983 tls1_PRF(s->s3->tmp.new_cipher->algorithm2,
984 TLS_MD_MASTER_SECRET_CONST,TLS_MD_MASTER_SECRET_CONST_SIZE,
985 s->s3->client_random,SSL3_RANDOM_SIZE,
987 s->s3->server_random,SSL3_RANDOM_SIZE,
990 s->session->master_key,buff,sizeof buff);
993 printf ("tls1_generate_master_secret() complete\n");
994 #endif /* KSSL_DEBUG */
995 return(SSL3_MASTER_SECRET_SIZE);
998 int tls1_alert_code(int code)
1002 case SSL_AD_CLOSE_NOTIFY: return(SSL3_AD_CLOSE_NOTIFY);
1003 case SSL_AD_UNEXPECTED_MESSAGE: return(SSL3_AD_UNEXPECTED_MESSAGE);
1004 case SSL_AD_BAD_RECORD_MAC: return(SSL3_AD_BAD_RECORD_MAC);
1005 case SSL_AD_DECRYPTION_FAILED: return(TLS1_AD_DECRYPTION_FAILED);
1006 case SSL_AD_RECORD_OVERFLOW: return(TLS1_AD_RECORD_OVERFLOW);
1007 case SSL_AD_DECOMPRESSION_FAILURE:return(SSL3_AD_DECOMPRESSION_FAILURE);
1008 case SSL_AD_HANDSHAKE_FAILURE: return(SSL3_AD_HANDSHAKE_FAILURE);
1009 case SSL_AD_NO_CERTIFICATE: return(-1);
1010 case SSL_AD_BAD_CERTIFICATE: return(SSL3_AD_BAD_CERTIFICATE);
1011 case SSL_AD_UNSUPPORTED_CERTIFICATE:return(SSL3_AD_UNSUPPORTED_CERTIFICATE);
1012 case SSL_AD_CERTIFICATE_REVOKED:return(SSL3_AD_CERTIFICATE_REVOKED);
1013 case SSL_AD_CERTIFICATE_EXPIRED:return(SSL3_AD_CERTIFICATE_EXPIRED);
1014 case SSL_AD_CERTIFICATE_UNKNOWN:return(SSL3_AD_CERTIFICATE_UNKNOWN);
1015 case SSL_AD_ILLEGAL_PARAMETER: return(SSL3_AD_ILLEGAL_PARAMETER);
1016 case SSL_AD_UNKNOWN_CA: return(TLS1_AD_UNKNOWN_CA);
1017 case SSL_AD_ACCESS_DENIED: return(TLS1_AD_ACCESS_DENIED);
1018 case SSL_AD_DECODE_ERROR: return(TLS1_AD_DECODE_ERROR);
1019 case SSL_AD_DECRYPT_ERROR: return(TLS1_AD_DECRYPT_ERROR);
1020 case SSL_AD_EXPORT_RESTRICTION: return(TLS1_AD_EXPORT_RESTRICTION);
1021 case SSL_AD_PROTOCOL_VERSION: return(TLS1_AD_PROTOCOL_VERSION);
1022 case SSL_AD_INSUFFICIENT_SECURITY:return(TLS1_AD_INSUFFICIENT_SECURITY);
1023 case SSL_AD_INTERNAL_ERROR: return(TLS1_AD_INTERNAL_ERROR);
1024 case SSL_AD_USER_CANCELLED: return(TLS1_AD_USER_CANCELLED);
1025 case SSL_AD_NO_RENEGOTIATION: return(TLS1_AD_NO_RENEGOTIATION);
1026 case SSL_AD_UNSUPPORTED_EXTENSION: return(TLS1_AD_UNSUPPORTED_EXTENSION);
1027 case SSL_AD_CERTIFICATE_UNOBTAINABLE: return(TLS1_AD_CERTIFICATE_UNOBTAINABLE);
1028 case SSL_AD_UNRECOGNIZED_NAME: return(TLS1_AD_UNRECOGNIZED_NAME);
1029 case SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE: return(TLS1_AD_BAD_CERTIFICATE_STATUS_RESPONSE);
1030 case SSL_AD_BAD_CERTIFICATE_HASH_VALUE: return(TLS1_AD_BAD_CERTIFICATE_HASH_VALUE);
1031 case SSL_AD_UNKNOWN_PSK_IDENTITY:return(TLS1_AD_UNKNOWN_PSK_IDENTITY);
1032 #if 0 /* not appropriate for TLS, not used for DTLS */
1033 case DTLS1_AD_MISSING_HANDSHAKE_MESSAGE: return
1034 (DTLS1_AD_MISSING_HANDSHAKE_MESSAGE);
1036 default: return(-1);