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) 1998-2002 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).
113 #include "ssl_locl.h"
114 #include <openssl/comp.h>
115 #include <openssl/evp.h>
116 #include <openssl/hmac.h>
117 #include <openssl/md5.h>
119 static void tls1_P_hash(const EVP_MD *md, const unsigned char *sec,
120 int sec_len, unsigned char *seed, int seed_len,
121 unsigned char *out, int olen)
127 unsigned char A1[EVP_MAX_MD_SIZE];
130 chunk=EVP_MD_size(md);
133 HMAC_CTX_init(&ctx_tmp);
134 HMAC_Init_ex(&ctx,sec,sec_len,md, NULL);
135 HMAC_Init_ex(&ctx_tmp,sec,sec_len,md, NULL);
136 HMAC_Update(&ctx,seed,seed_len);
137 HMAC_Final(&ctx,A1,&A1_len);
142 HMAC_Init_ex(&ctx,NULL,0,NULL,NULL); /* re-init */
143 HMAC_Init_ex(&ctx_tmp,NULL,0,NULL,NULL); /* re-init */
144 HMAC_Update(&ctx,A1,A1_len);
145 HMAC_Update(&ctx_tmp,A1,A1_len);
146 HMAC_Update(&ctx,seed,seed_len);
150 HMAC_Final(&ctx,out,&j);
153 HMAC_Final(&ctx_tmp,A1,&A1_len); /* calc the next A1 value */
157 HMAC_Final(&ctx,A1,&A1_len);
162 HMAC_CTX_cleanup(&ctx);
163 HMAC_CTX_cleanup(&ctx_tmp);
164 OPENSSL_cleanse(A1,sizeof(A1));
167 static void tls1_PRF(const EVP_MD *md5, const EVP_MD *sha1,
168 unsigned char *label, int label_len,
169 const unsigned char *sec, int slen, unsigned char *out1,
170 unsigned char *out2, int olen)
173 const unsigned char *S1,*S2;
178 len+=(slen&1); /* add for odd, make longer */
181 tls1_P_hash(md5 ,S1,len,label,label_len,out1,olen);
182 tls1_P_hash(sha1,S2,len,label,label_len,out2,olen);
184 for (i=0; i<olen; i++)
188 static void tls1_generate_key_block(SSL *s, unsigned char *km,
189 unsigned char *tmp, int num)
192 unsigned char buf[SSL3_RANDOM_SIZE*2+
193 TLS_MD_MAX_CONST_SIZE];
196 memcpy(p,TLS_MD_KEY_EXPANSION_CONST,
197 TLS_MD_KEY_EXPANSION_CONST_SIZE);
198 p+=TLS_MD_KEY_EXPANSION_CONST_SIZE;
199 memcpy(p,s->s3->server_random,SSL3_RANDOM_SIZE);
201 memcpy(p,s->s3->client_random,SSL3_RANDOM_SIZE);
204 tls1_PRF(s->ctx->md5,s->ctx->sha1,buf,(int)(p-buf),
205 s->session->master_key,s->session->master_key_length,
208 printf("tls1_generate_key_block() ==> %d byte master_key =\n\t",
209 s->session->master_key_length);
212 for (i=0; i < s->session->master_key_length; i++)
214 printf("%02X", s->session->master_key[i]);
217 #endif /* KSSL_DEBUG */
220 int tls1_change_cipher_state(SSL *s, int which)
222 static const unsigned char empty[]="";
223 unsigned char *p,*key_block,*mac_secret;
224 unsigned char *exp_label,buf[TLS_MD_MAX_CONST_SIZE+
226 unsigned char tmp1[EVP_MAX_KEY_LENGTH];
227 unsigned char tmp2[EVP_MAX_KEY_LENGTH];
228 unsigned char iv1[EVP_MAX_IV_LENGTH*2];
229 unsigned char iv2[EVP_MAX_IV_LENGTH*2];
230 unsigned char *ms,*key,*iv,*er1,*er2;
234 #ifndef OPENSSL_NO_COMP
235 const SSL_COMP *comp;
238 int is_export,n,i,j,k,exp_label_len,cl;
241 is_export=SSL_C_IS_EXPORT(s->s3->tmp.new_cipher);
242 c=s->s3->tmp.new_sym_enc;
243 m=s->s3->tmp.new_hash;
244 #ifndef OPENSSL_NO_COMP
245 comp=s->s3->tmp.new_compression;
247 key_block=s->s3->tmp.key_block;
250 printf("tls1_change_cipher_state(which= %d) w/\n", which);
251 printf("\talg= %ld, comp= %p\n", s->s3->tmp.new_cipher->algorithms,
253 printf("\tevp_cipher == %p ==? &d_cbc_ede_cipher3\n", c);
254 printf("\tevp_cipher: nid, blksz= %d, %d, keylen=%d, ivlen=%d\n",
255 c->nid,c->block_size,c->key_len,c->iv_len);
256 printf("\tkey_block: len= %d, data= ", s->s3->tmp.key_block_length);
259 for (i=0; i<s->s3->tmp.key_block_length; i++)
260 printf("%02x", key_block[i]); printf("\n");
262 #endif /* KSSL_DEBUG */
264 if (which & SSL3_CC_READ)
266 if (s->enc_read_ctx != NULL)
268 else if ((s->enc_read_ctx=OPENSSL_malloc(sizeof(EVP_CIPHER_CTX))) == NULL)
272 #ifndef OPENSSL_NO_COMP
273 if (s->expand != NULL)
275 COMP_CTX_free(s->expand);
280 s->expand=COMP_CTX_new(comp->method);
281 if (s->expand == NULL)
283 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE,SSL_R_COMPRESSION_LIBRARY_ERROR);
286 if (s->s3->rrec.comp == NULL)
287 s->s3->rrec.comp=(unsigned char *)
288 OPENSSL_malloc(SSL3_RT_MAX_ENCRYPTED_LENGTH);
289 if (s->s3->rrec.comp == NULL)
293 /* this is done by dtls1_reset_seq_numbers for DTLS1_VERSION */
294 if (s->version != DTLS1_VERSION)
295 memset(&(s->s3->read_sequence[0]),0,8);
296 mac_secret= &(s->s3->read_mac_secret[0]);
300 if (s->enc_write_ctx != NULL)
302 else if ((s->enc_write_ctx=OPENSSL_malloc(sizeof(EVP_CIPHER_CTX))) == NULL)
304 if ((s->enc_write_ctx == NULL) &&
305 ((s->enc_write_ctx=(EVP_CIPHER_CTX *)
306 OPENSSL_malloc(sizeof(EVP_CIPHER_CTX))) == NULL))
308 dd= s->enc_write_ctx;
310 #ifndef OPENSSL_NO_COMP
311 if (s->compress != NULL)
313 COMP_CTX_free(s->compress);
318 s->compress=COMP_CTX_new(comp->method);
319 if (s->compress == NULL)
321 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE,SSL_R_COMPRESSION_LIBRARY_ERROR);
326 /* this is done by dtls1_reset_seq_numbers for DTLS1_VERSION */
327 if (s->version != DTLS1_VERSION)
328 memset(&(s->s3->write_sequence[0]),0,8);
329 mac_secret= &(s->s3->write_mac_secret[0]);
333 EVP_CIPHER_CTX_cleanup(dd);
334 EVP_CIPHER_CTX_init(dd);
336 p=s->s3->tmp.key_block;
338 cl=EVP_CIPHER_key_length(c);
339 j=is_export ? (cl < SSL_C_EXPORT_KEYLENGTH(s->s3->tmp.new_cipher) ?
340 cl : SSL_C_EXPORT_KEYLENGTH(s->s3->tmp.new_cipher)) : cl;
341 /* Was j=(exp)?5:EVP_CIPHER_key_length(c); */
342 k=EVP_CIPHER_iv_length(c);
343 er1= &(s->s3->client_random[0]);
344 er2= &(s->s3->server_random[0]);
345 if ( (which == SSL3_CHANGE_CIPHER_CLIENT_WRITE) ||
346 (which == SSL3_CHANGE_CIPHER_SERVER_READ))
349 key= &(p[ n]); n+=j+j;
350 iv= &(p[ n]); n+=k+k;
351 exp_label=(unsigned char *)TLS_MD_CLIENT_WRITE_KEY_CONST;
352 exp_label_len=TLS_MD_CLIENT_WRITE_KEY_CONST_SIZE;
358 ms= &(p[ n]); n+=i+j;
359 key= &(p[ n]); n+=j+k;
361 exp_label=(unsigned char *)TLS_MD_SERVER_WRITE_KEY_CONST;
362 exp_label_len=TLS_MD_SERVER_WRITE_KEY_CONST_SIZE;
366 if (n > s->s3->tmp.key_block_length)
368 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE,ERR_R_INTERNAL_ERROR);
372 memcpy(mac_secret,ms,i);
374 printf("which = %04X\nmac key=",which);
375 { int z; for (z=0; z<i; z++) printf("%02X%c",ms[z],((z+1)%16)?' ':'\n'); }
379 /* In here I set both the read and write key/iv to the
380 * same value since only the correct one will be used :-).
383 memcpy(p,exp_label,exp_label_len);
385 memcpy(p,s->s3->client_random,SSL3_RANDOM_SIZE);
387 memcpy(p,s->s3->server_random,SSL3_RANDOM_SIZE);
389 tls1_PRF(s->ctx->md5,s->ctx->sha1,buf,(int)(p-buf),key,j,
390 tmp1,tmp2,EVP_CIPHER_key_length(c));
396 memcpy(p,TLS_MD_IV_BLOCK_CONST,
397 TLS_MD_IV_BLOCK_CONST_SIZE);
398 p+=TLS_MD_IV_BLOCK_CONST_SIZE;
399 memcpy(p,s->s3->client_random,SSL3_RANDOM_SIZE);
401 memcpy(p,s->s3->server_random,SSL3_RANDOM_SIZE);
403 tls1_PRF(s->ctx->md5,s->ctx->sha1,buf,p-buf,empty,0,
412 s->session->key_arg_length=0;
416 printf("EVP_CipherInit_ex(dd,c,key=,iv=,which)\n");
417 printf("\tkey= "); for (i=0; i<c->key_len; i++) printf("%02x", key[i]);
419 printf("\t iv= "); for (i=0; i<c->iv_len; i++) printf("%02x", iv[i]);
422 #endif /* KSSL_DEBUG */
424 EVP_CipherInit_ex(dd,c,NULL,key,iv,(which & SSL3_CC_WRITE));
426 printf("which = %04X\nkey=",which);
427 { int z; for (z=0; z<EVP_CIPHER_key_length(c); z++) printf("%02X%c",key[z],((z+1)%16)?' ':'\n'); }
429 { int z; for (z=0; z<k; z++) printf("%02X%c",iv[z],((z+1)%16)?' ':'\n'); }
433 OPENSSL_cleanse(tmp1,sizeof(tmp1));
434 OPENSSL_cleanse(tmp2,sizeof(tmp1));
435 OPENSSL_cleanse(iv1,sizeof(iv1));
436 OPENSSL_cleanse(iv2,sizeof(iv2));
439 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE,ERR_R_MALLOC_FAILURE);
444 int tls1_setup_key_block(SSL *s)
446 unsigned char *p1,*p2;
453 printf ("tls1_setup_key_block()\n");
454 #endif /* KSSL_DEBUG */
456 if (s->s3->tmp.key_block_length != 0)
459 if (!ssl_cipher_get_evp(s->session,&c,&hash,&comp))
461 SSLerr(SSL_F_TLS1_SETUP_KEY_BLOCK,SSL_R_CIPHER_OR_HASH_UNAVAILABLE);
465 s->s3->tmp.new_sym_enc=c;
466 s->s3->tmp.new_hash=hash;
468 num=EVP_CIPHER_key_length(c)+EVP_MD_size(hash)+EVP_CIPHER_iv_length(c);
471 ssl3_cleanup_key_block(s);
473 if ((p1=(unsigned char *)OPENSSL_malloc(num)) == NULL)
475 if ((p2=(unsigned char *)OPENSSL_malloc(num)) == NULL)
478 s->s3->tmp.key_block_length=num;
479 s->s3->tmp.key_block=p1;
483 printf("client random\n");
484 { int z; for (z=0; z<SSL3_RANDOM_SIZE; z++) printf("%02X%c",s->s3->client_random[z],((z+1)%16)?' ':'\n'); }
485 printf("server random\n");
486 { int z; for (z=0; z<SSL3_RANDOM_SIZE; z++) printf("%02X%c",s->s3->server_random[z],((z+1)%16)?' ':'\n'); }
487 printf("pre-master\n");
488 { int z; for (z=0; z<s->session->master_key_length; z++) printf("%02X%c",s->session->master_key[z],((z+1)%16)?' ':'\n'); }
490 tls1_generate_key_block(s,p1,p2,num);
491 OPENSSL_cleanse(p2,num);
494 printf("\nkey block\n");
495 { int z; for (z=0; z<num; z++) printf("%02X%c",p1[z],((z+1)%16)?' ':'\n'); }
498 if (!(s->options & SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS))
500 /* enable vulnerability countermeasure for CBC ciphers with
501 * known-IV problem (http://www.openssl.org/~bodo/tls-cbc.txt)
503 s->s3->need_empty_fragments = 1;
505 if (s->session->cipher != NULL)
507 if ((s->session->cipher->algorithms & SSL_ENC_MASK) == SSL_eNULL)
508 s->s3->need_empty_fragments = 0;
510 #ifndef OPENSSL_NO_RC4
511 if ((s->session->cipher->algorithms & SSL_ENC_MASK) == SSL_RC4)
512 s->s3->need_empty_fragments = 0;
519 SSLerr(SSL_F_TLS1_SETUP_KEY_BLOCK,ERR_R_MALLOC_FAILURE);
523 int tls1_enc(SSL *s, int send)
529 const EVP_CIPHER *enc;
533 if (s->write_hash != NULL)
534 n=EVP_MD_size(s->write_hash);
537 if (s->enc_write_ctx == NULL)
540 enc=EVP_CIPHER_CTX_cipher(s->enc_write_ctx);
544 if (s->read_hash != NULL)
545 n=EVP_MD_size(s->read_hash);
548 if (s->enc_read_ctx == NULL)
551 enc=EVP_CIPHER_CTX_cipher(s->enc_read_ctx);
555 printf("tls1_enc(%d)\n", send);
556 #endif /* KSSL_DEBUG */
558 if ((s->session == NULL) || (ds == NULL) ||
561 memmove(rec->data,rec->input,rec->length);
562 rec->input=rec->data;
567 bs=EVP_CIPHER_block_size(ds->cipher);
569 if ((bs != 1) && send)
573 /* Add weird padding of upto 256 bytes */
575 /* we need to add 'i' padding bytes of value j */
577 if (s->options & SSL_OP_TLS_BLOCK_PADDING_BUG)
579 if (s->s3->flags & TLS1_FLAGS_TLS_PADDING_BUG)
582 for (k=(int)l; k<(int)(l+i); k++)
591 printf("EVP_Cipher(ds=%p,rec->data=%p,rec->input=%p,l=%ld) ==>\n",
592 ds,rec->data,rec->input,l);
593 printf("\tEVP_CIPHER_CTX: %d buf_len, %d key_len [%d %d], %d iv_len\n",
594 ds->buf_len, ds->cipher->key_len,
595 DES_KEY_SZ, DES_SCHEDULE_SZ,
598 for (i=0; i<ds->cipher->iv_len; i++) printf("%02X", ds->iv[i]);
600 printf("\trec->input=");
601 for (ui=0; ui<l; ui++) printf(" %02x", rec->input[ui]);
604 #endif /* KSSL_DEBUG */
608 if (l == 0 || l%bs != 0)
610 SSLerr(SSL_F_TLS1_ENC,SSL_R_BLOCK_CIPHER_PAD_IS_WRONG);
611 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECRYPTION_FAILED);
616 EVP_Cipher(ds,rec->data,rec->input,l);
621 printf("\trec->data=");
623 printf(" %02x", rec->data[i]); printf("\n");
625 #endif /* KSSL_DEBUG */
627 if ((bs != 1) && !send)
629 ii=i=rec->data[l-1]; /* padding_length */
631 /* NB: if compression is in operation the first packet
632 * may not be of even length so the padding bug check
633 * cannot be performed. This bug workaround has been
634 * around since SSLeay so hopefully it is either fixed
635 * now or no buggy implementation supports compression
638 if ( (s->options&SSL_OP_TLS_BLOCK_PADDING_BUG)
641 /* First packet is even in size, so check */
642 if ((memcmp(s->s3->read_sequence,
643 "\0\0\0\0\0\0\0\0",8) == 0) && !(ii & 1))
644 s->s3->flags|=TLS1_FLAGS_TLS_PADDING_BUG;
645 if (s->s3->flags & TLS1_FLAGS_TLS_PADDING_BUG)
648 /* TLS 1.0 does not bound the number of padding bytes by the block size.
649 * All of them must have value 'padding_length'. */
650 if (i > (int)rec->length)
652 /* Incorrect padding. SSLerr() and ssl3_alert are done
653 * by caller: we don't want to reveal whether this is
654 * a decryption error or a MAC verification failure
655 * (see http://www.openssl.org/~bodo/tls-cbc.txt) */
658 for (j=(int)(l-i); j<(int)l; j++)
660 if (rec->data[j] != ii)
662 /* Incorrect padding */
672 int tls1_cert_verify_mac(SSL *s, EVP_MD_CTX *in_ctx, unsigned char *out)
677 EVP_MD_CTX_init(&ctx);
678 EVP_MD_CTX_copy_ex(&ctx,in_ctx);
679 EVP_DigestFinal_ex(&ctx,out,&ret);
680 EVP_MD_CTX_cleanup(&ctx);
684 int tls1_final_finish_mac(SSL *s, EVP_MD_CTX *in1_ctx, EVP_MD_CTX *in2_ctx,
685 const char *str, int slen, unsigned char *out)
689 unsigned char buf[TLS_MD_MAX_CONST_SIZE+MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH];
690 unsigned char *q,buf2[12];
696 EVP_MD_CTX_init(&ctx);
697 EVP_MD_CTX_copy_ex(&ctx,in1_ctx);
698 EVP_DigestFinal_ex(&ctx,q,&i);
700 EVP_MD_CTX_copy_ex(&ctx,in2_ctx);
701 EVP_DigestFinal_ex(&ctx,q,&i);
704 tls1_PRF(s->ctx->md5,s->ctx->sha1,buf,(int)(q-buf),
705 s->session->master_key,s->session->master_key_length,
706 out,buf2,sizeof buf2);
707 EVP_MD_CTX_cleanup(&ctx);
712 int tls1_mac(SSL *ssl, unsigned char *md, int send)
715 unsigned char *mac_sec,*seq;
717 unsigned int md_size;
720 unsigned char buf[5];
724 rec= &(ssl->s3->wrec);
725 mac_sec= &(ssl->s3->write_mac_secret[0]);
726 seq= &(ssl->s3->write_sequence[0]);
727 hash=ssl->write_hash;
731 rec= &(ssl->s3->rrec);
732 mac_sec= &(ssl->s3->read_mac_secret[0]);
733 seq= &(ssl->s3->read_sequence[0]);
737 md_size=EVP_MD_size(hash);
740 buf[1]=TLS1_VERSION_MAJOR;
741 buf[2]=TLS1_VERSION_MINOR;
742 buf[3]=rec->length>>8;
743 buf[4]=rec->length&0xff;
745 /* I should fix this up TLS TLS TLS TLS TLS XXXXXXXX */
746 HMAC_CTX_init(&hmac);
747 HMAC_Init_ex(&hmac,mac_sec,EVP_MD_size(hash),hash,NULL);
748 HMAC_Update(&hmac,seq,8);
749 HMAC_Update(&hmac,buf,5);
750 HMAC_Update(&hmac,rec->input,rec->length);
751 HMAC_Final(&hmac,md,&md_size);
752 HMAC_CTX_cleanup(&hmac);
756 {unsigned int z; for (z=0; z<md_size; z++) printf("%02X ",mac_sec[z]); printf("\n"); }
758 {int z; for (z=0; z<8; z++) printf("%02X ",seq[z]); printf("\n"); }
760 {int z; for (z=0; z<5; z++) printf("%02X ",buf[z]); printf("\n"); }
762 {unsigned int z; for (z=0; z<rec->length; z++) printf("%02X ",buf[z]); printf("\n"); }
765 if ( SSL_version(ssl) != DTLS1_VERSION)
770 if (seq[i] != 0) break;
775 {unsigned int z; for (z=0; z<md_size; z++) printf("%02X ",md[z]); printf("\n"); }
780 int tls1_generate_master_secret(SSL *s, unsigned char *out, unsigned char *p,
783 unsigned char buf[SSL3_RANDOM_SIZE*2+TLS_MD_MASTER_SECRET_CONST_SIZE];
784 unsigned char buff[SSL_MAX_MASTER_KEY_LENGTH];
787 printf ("tls1_generate_master_secret(%p,%p, %p, %d)\n", s,out, p,len);
788 #endif /* KSSL_DEBUG */
790 /* Setup the stuff to munge */
791 memcpy(buf,TLS_MD_MASTER_SECRET_CONST,
792 TLS_MD_MASTER_SECRET_CONST_SIZE);
793 memcpy(&(buf[TLS_MD_MASTER_SECRET_CONST_SIZE]),
794 s->s3->client_random,SSL3_RANDOM_SIZE);
795 memcpy(&(buf[SSL3_RANDOM_SIZE+TLS_MD_MASTER_SECRET_CONST_SIZE]),
796 s->s3->server_random,SSL3_RANDOM_SIZE);
797 tls1_PRF(s->ctx->md5,s->ctx->sha1,
798 buf,TLS_MD_MASTER_SECRET_CONST_SIZE+SSL3_RANDOM_SIZE*2,p,len,
799 s->session->master_key,buff,sizeof buff);
801 printf ("tls1_generate_master_secret() complete\n");
802 #endif /* KSSL_DEBUG */
803 return(SSL3_MASTER_SECRET_SIZE);
806 int tls1_alert_code(int code)
810 case SSL_AD_CLOSE_NOTIFY: return(SSL3_AD_CLOSE_NOTIFY);
811 case SSL_AD_UNEXPECTED_MESSAGE: return(SSL3_AD_UNEXPECTED_MESSAGE);
812 case SSL_AD_BAD_RECORD_MAC: return(SSL3_AD_BAD_RECORD_MAC);
813 case SSL_AD_DECRYPTION_FAILED: return(TLS1_AD_DECRYPTION_FAILED);
814 case SSL_AD_RECORD_OVERFLOW: return(TLS1_AD_RECORD_OVERFLOW);
815 case SSL_AD_DECOMPRESSION_FAILURE:return(SSL3_AD_DECOMPRESSION_FAILURE);
816 case SSL_AD_HANDSHAKE_FAILURE: return(SSL3_AD_HANDSHAKE_FAILURE);
817 case SSL_AD_NO_CERTIFICATE: return(-1);
818 case SSL_AD_BAD_CERTIFICATE: return(SSL3_AD_BAD_CERTIFICATE);
819 case SSL_AD_UNSUPPORTED_CERTIFICATE:return(SSL3_AD_UNSUPPORTED_CERTIFICATE);
820 case SSL_AD_CERTIFICATE_REVOKED:return(SSL3_AD_CERTIFICATE_REVOKED);
821 case SSL_AD_CERTIFICATE_EXPIRED:return(SSL3_AD_CERTIFICATE_EXPIRED);
822 case SSL_AD_CERTIFICATE_UNKNOWN:return(SSL3_AD_CERTIFICATE_UNKNOWN);
823 case SSL_AD_ILLEGAL_PARAMETER: return(SSL3_AD_ILLEGAL_PARAMETER);
824 case SSL_AD_UNKNOWN_CA: return(TLS1_AD_UNKNOWN_CA);
825 case SSL_AD_ACCESS_DENIED: return(TLS1_AD_ACCESS_DENIED);
826 case SSL_AD_DECODE_ERROR: return(TLS1_AD_DECODE_ERROR);
827 case SSL_AD_DECRYPT_ERROR: return(TLS1_AD_DECRYPT_ERROR);
828 case SSL_AD_EXPORT_RESTRICTION: return(TLS1_AD_EXPORT_RESTRICTION);
829 case SSL_AD_PROTOCOL_VERSION: return(TLS1_AD_PROTOCOL_VERSION);
830 case SSL_AD_INSUFFICIENT_SECURITY:return(TLS1_AD_INSUFFICIENT_SECURITY);
831 case SSL_AD_INTERNAL_ERROR: return(TLS1_AD_INTERNAL_ERROR);
832 case SSL_AD_USER_CANCELLED: return(TLS1_AD_USER_CANCELLED);
833 case SSL_AD_NO_RENEGOTIATION: return(TLS1_AD_NO_RENEGOTIATION);
834 case DTLS1_AD_MISSING_HANDSHAKE_MESSAGE: return
835 (DTLS1_AD_MISSING_HANDSHAKE_MESSAGE);