1998-12-21 10:52:47 +00:00
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/* ssl/s3_enc.c */
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1998-12-21 10:56:39 +00:00
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/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
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1998-12-21 10:52:47 +00:00
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* All rights reserved.
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*
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* This package is an SSL implementation written
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* by Eric Young (eay@cryptsoft.com).
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* The implementation was written so as to conform with Netscapes SSL.
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*
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* This library is free for commercial and non-commercial use as long as
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* the following conditions are aheared to. The following conditions
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* apply to all code found in this distribution, be it the RC4, RSA,
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* lhash, DES, etc., code; not just the SSL code. The SSL documentation
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* included with this distribution is covered by the same copyright terms
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* except that the holder is Tim Hudson (tjh@cryptsoft.com).
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*
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* Copyright remains Eric Young's, and as such any Copyright notices in
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* the code are not to be removed.
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* If this package is used in a product, Eric Young should be given attribution
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* as the author of the parts of the library used.
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* This can be in the form of a textual message at program startup or
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* in documentation (online or textual) provided with the package.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* "This product includes cryptographic software written by
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* Eric Young (eay@cryptsoft.com)"
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* The word 'cryptographic' can be left out if the rouines from the library
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* being used are not cryptographic related :-).
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* 4. If you include any Windows specific code (or a derivative thereof) from
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* the apps directory (application code) you must include an acknowledgement:
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* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
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*
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* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* The licence and distribution terms for any publically available version or
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* derivative of this code cannot be changed. i.e. this code cannot simply be
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* copied and put under another distribution licence
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* [including the GNU Public Licence.]
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*/
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2002-04-13 22:51:26 +00:00
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/* ====================================================================
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* Copyright (c) 1998-2002 The OpenSSL Project. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* 3. All advertising materials mentioning features or use of this
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* software must display the following acknowledgment:
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* "This product includes software developed by the OpenSSL Project
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* for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
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*
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* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
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* endorse or promote products derived from this software without
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* prior written permission. For written permission, please contact
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* openssl-core@openssl.org.
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*
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* 5. Products derived from this software may not be called "OpenSSL"
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* nor may "OpenSSL" appear in their names without prior written
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* permission of the OpenSSL Project.
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*
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* 6. Redistributions of any form whatsoever must retain the following
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* acknowledgment:
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* "This product includes software developed by the OpenSSL Project
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* for use in the OpenSSL Toolkit (http://www.openssl.org/)"
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*
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* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
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* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
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* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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* OF THE POSSIBILITY OF SUCH DAMAGE.
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* ====================================================================
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*
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* This product includes cryptographic software written by Eric Young
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* (eay@cryptsoft.com). This product includes software written by Tim
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* Hudson (tjh@cryptsoft.com).
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*
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*/
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1998-12-21 10:52:47 +00:00
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#include <stdio.h>
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#include "ssl_locl.h"
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2002-07-10 06:57:54 +00:00
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#include <openssl/evp.h>
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2001-07-30 23:57:25 +00:00
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#include <openssl/md5.h>
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1998-12-21 10:52:47 +00:00
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static unsigned char ssl3_pad_1[48]={
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0x36,0x36,0x36,0x36,0x36,0x36,0x36,0x36,
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0x36,0x36,0x36,0x36,0x36,0x36,0x36,0x36,
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0x36,0x36,0x36,0x36,0x36,0x36,0x36,0x36,
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0x36,0x36,0x36,0x36,0x36,0x36,0x36,0x36,
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0x36,0x36,0x36,0x36,0x36,0x36,0x36,0x36,
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0x36,0x36,0x36,0x36,0x36,0x36,0x36,0x36 };
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static unsigned char ssl3_pad_2[48]={
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0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,
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0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,
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0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,
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0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,
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0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,
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0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,0x5c };
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1998-12-21 10:56:39 +00:00
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static int ssl3_handshake_mac(SSL *s, EVP_MD_CTX *in_ctx,
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2000-01-06 00:24:24 +00:00
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const char *sender, int len, unsigned char *p);
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1998-12-21 10:56:39 +00:00
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2001-04-08 13:47:51 +00:00
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static int ssl3_generate_key_block(SSL *s, unsigned char *km, int num)
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1998-12-21 10:56:39 +00:00
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{
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2001-06-19 22:30:40 +00:00
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EVP_MD_CTX m5;
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EVP_MD_CTX s1;
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2001-04-08 05:41:42 +00:00
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unsigned char buf[16],smd[SHA_DIGEST_LENGTH];
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1998-12-21 10:56:39 +00:00
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unsigned char c='A';
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int i,j,k;
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1999-06-04 21:54:13 +00:00
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#ifdef CHARSET_EBCDIC
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c = os_toascii[c]; /*'A' in ASCII */
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#endif
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1998-12-21 10:56:39 +00:00
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k=0;
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2001-07-30 23:57:25 +00:00
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EVP_MD_CTX_init(&m5);
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EVP_MD_CTX_init(&s1);
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1998-12-21 10:56:39 +00:00
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for (i=0; i<num; i+=MD5_DIGEST_LENGTH)
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{
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k++;
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2001-04-08 13:47:51 +00:00
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if (k > sizeof buf)
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{
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/* bug: 'buf' is too small for this ciphersuite */
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SSLerr(SSL_F_SSL3_GENERATE_KEY_BLOCK, ERR_R_INTERNAL_ERROR);
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return 0;
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}
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1998-12-21 10:56:39 +00:00
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for (j=0; j<k; j++)
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buf[j]=c;
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c++;
|
2001-10-16 01:24:29 +00:00
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EVP_DigestInit_ex(&s1,EVP_sha1(), NULL);
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2001-06-19 22:30:40 +00:00
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EVP_DigestUpdate(&s1,buf,k);
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EVP_DigestUpdate(&s1,s->session->master_key,
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1998-12-21 10:56:39 +00:00
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s->session->master_key_length);
|
2001-06-19 22:30:40 +00:00
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EVP_DigestUpdate(&s1,s->s3->server_random,SSL3_RANDOM_SIZE);
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EVP_DigestUpdate(&s1,s->s3->client_random,SSL3_RANDOM_SIZE);
|
2001-10-16 01:24:29 +00:00
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EVP_DigestFinal_ex(&s1,smd,NULL);
|
1998-12-21 10:56:39 +00:00
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2001-10-16 01:24:29 +00:00
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EVP_DigestInit_ex(&m5,EVP_md5(), NULL);
|
2001-06-19 22:30:40 +00:00
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EVP_DigestUpdate(&m5,s->session->master_key,
|
1998-12-21 10:56:39 +00:00
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s->session->master_key_length);
|
2001-06-19 22:30:40 +00:00
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EVP_DigestUpdate(&m5,smd,SHA_DIGEST_LENGTH);
|
1998-12-21 10:56:39 +00:00
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if ((i+MD5_DIGEST_LENGTH) > num)
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{
|
2001-10-16 01:24:29 +00:00
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EVP_DigestFinal_ex(&m5,smd,NULL);
|
1998-12-21 10:56:39 +00:00
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memcpy(km,smd,(num-i));
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}
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else
|
2001-10-16 01:24:29 +00:00
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EVP_DigestFinal_ex(&m5,km,NULL);
|
1998-12-21 10:56:39 +00:00
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km+=MD5_DIGEST_LENGTH;
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}
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memset(smd,0,SHA_DIGEST_LENGTH);
|
2001-07-30 23:57:25 +00:00
|
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EVP_MD_CTX_cleanup(&m5);
|
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EVP_MD_CTX_cleanup(&s1);
|
2001-04-08 13:47:51 +00:00
|
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return 1;
|
1998-12-21 10:56:39 +00:00
|
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}
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|
1999-04-19 21:31:43 +00:00
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int ssl3_change_cipher_state(SSL *s, int which)
|
1998-12-21 10:52:47 +00:00
|
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{
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unsigned char *p,*key_block,*mac_secret;
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unsigned char exp_key[EVP_MAX_KEY_LENGTH];
|
2002-11-12 13:23:40 +00:00
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unsigned char exp_iv[EVP_MAX_IV_LENGTH];
|
1998-12-21 10:52:47 +00:00
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unsigned char *ms,*key,*iv,*er1,*er2;
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EVP_CIPHER_CTX *dd;
|
1999-04-17 21:25:43 +00:00
|
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const EVP_CIPHER *c;
|
1998-12-21 11:00:56 +00:00
|
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COMP_METHOD *comp;
|
1999-04-17 21:25:43 +00:00
|
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const EVP_MD *m;
|
2001-06-19 22:30:40 +00:00
|
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EVP_MD_CTX md;
|
1999-02-13 12:39:50 +00:00
|
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int exp,n,i,j,k,cl;
|
2001-10-22 13:59:36 +00:00
|
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int reuse_dd = 0;
|
1998-12-21 10:52:47 +00:00
|
|
|
|
1999-02-21 20:03:24 +00:00
|
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exp=SSL_C_IS_EXPORT(s->s3->tmp.new_cipher);
|
1998-12-21 10:52:47 +00:00
|
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|
c=s->s3->tmp.new_sym_enc;
|
|
|
|
m=s->s3->tmp.new_hash;
|
Updates to the new SSL compression code
[Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
Fix so that the version number in the master secret, when passed
via RSA, checks that if TLS was proposed, but we roll back to SSLv3
(because the server will not accept higher), that the version number
is 0x03,0x01, not 0x03,0x00
[Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
Submitted by:
Reviewed by:
PR:
1999-02-16 09:22:21 +00:00
|
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|
if (s->s3->tmp.new_compression == NULL)
|
|
|
|
comp=NULL;
|
|
|
|
else
|
|
|
|
comp=s->s3->tmp.new_compression->method;
|
1998-12-21 10:52:47 +00:00
|
|
|
key_block=s->s3->tmp.key_block;
|
|
|
|
|
|
|
|
if (which & SSL3_CC_READ)
|
|
|
|
{
|
2001-10-22 13:59:36 +00:00
|
|
|
if (s->enc_read_ctx != NULL)
|
|
|
|
reuse_dd = 1;
|
|
|
|
else if ((s->enc_read_ctx=OPENSSL_malloc(sizeof(EVP_CIPHER_CTX))) == NULL)
|
1998-12-21 10:52:47 +00:00
|
|
|
goto err;
|
|
|
|
dd= s->enc_read_ctx;
|
|
|
|
s->read_hash=m;
|
1998-12-21 11:00:56 +00:00
|
|
|
/* COMPRESS */
|
|
|
|
if (s->expand != NULL)
|
|
|
|
{
|
|
|
|
COMP_CTX_free(s->expand);
|
|
|
|
s->expand=NULL;
|
|
|
|
}
|
|
|
|
if (comp != NULL)
|
|
|
|
{
|
|
|
|
s->expand=COMP_CTX_new(comp);
|
|
|
|
if (s->expand == NULL)
|
|
|
|
{
|
|
|
|
SSLerr(SSL_F_SSL3_CHANGE_CIPHER_STATE,SSL_R_COMPRESSION_LIBRARY_ERROR);
|
|
|
|
goto err2;
|
|
|
|
}
|
Updates to the new SSL compression code
[Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
Fix so that the version number in the master secret, when passed
via RSA, checks that if TLS was proposed, but we roll back to SSLv3
(because the server will not accept higher), that the version number
is 0x03,0x01, not 0x03,0x00
[Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
Submitted by:
Reviewed by:
PR:
1999-02-16 09:22:21 +00:00
|
|
|
if (s->s3->rrec.comp == NULL)
|
|
|
|
s->s3->rrec.comp=(unsigned char *)
|
2000-06-01 22:19:21 +00:00
|
|
|
OPENSSL_malloc(SSL3_RT_MAX_PLAIN_LENGTH);
|
1998-12-21 11:00:56 +00:00
|
|
|
if (s->s3->rrec.comp == NULL)
|
|
|
|
goto err;
|
|
|
|
}
|
1998-12-21 10:52:47 +00:00
|
|
|
memset(&(s->s3->read_sequence[0]),0,8);
|
|
|
|
mac_secret= &(s->s3->read_mac_secret[0]);
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
2001-10-22 13:59:36 +00:00
|
|
|
if (s->enc_write_ctx != NULL)
|
|
|
|
reuse_dd = 1;
|
|
|
|
else if ((s->enc_write_ctx=OPENSSL_malloc(sizeof(EVP_CIPHER_CTX))) == NULL)
|
1998-12-21 10:52:47 +00:00
|
|
|
goto err;
|
|
|
|
dd= s->enc_write_ctx;
|
|
|
|
s->write_hash=m;
|
1998-12-21 11:00:56 +00:00
|
|
|
/* COMPRESS */
|
|
|
|
if (s->compress != NULL)
|
|
|
|
{
|
|
|
|
COMP_CTX_free(s->compress);
|
|
|
|
s->compress=NULL;
|
|
|
|
}
|
|
|
|
if (comp != NULL)
|
|
|
|
{
|
|
|
|
s->compress=COMP_CTX_new(comp);
|
|
|
|
if (s->compress == NULL)
|
|
|
|
{
|
|
|
|
SSLerr(SSL_F_SSL3_CHANGE_CIPHER_STATE,SSL_R_COMPRESSION_LIBRARY_ERROR);
|
|
|
|
goto err2;
|
|
|
|
}
|
|
|
|
}
|
1998-12-21 10:52:47 +00:00
|
|
|
memset(&(s->s3->write_sequence[0]),0,8);
|
|
|
|
mac_secret= &(s->s3->write_mac_secret[0]);
|
|
|
|
}
|
|
|
|
|
2001-10-22 13:59:36 +00:00
|
|
|
if (reuse_dd)
|
|
|
|
EVP_CIPHER_CTX_cleanup(dd);
|
1998-12-21 10:56:39 +00:00
|
|
|
EVP_CIPHER_CTX_init(dd);
|
|
|
|
|
1998-12-21 10:52:47 +00:00
|
|
|
p=s->s3->tmp.key_block;
|
|
|
|
i=EVP_MD_size(m);
|
1999-02-13 12:39:50 +00:00
|
|
|
cl=EVP_CIPHER_key_length(c);
|
1999-02-21 20:03:24 +00:00
|
|
|
j=exp ? (cl < SSL_C_EXPORT_KEYLENGTH(s->s3->tmp.new_cipher) ?
|
|
|
|
cl : SSL_C_EXPORT_KEYLENGTH(s->s3->tmp.new_cipher)) : cl;
|
1999-02-13 12:39:50 +00:00
|
|
|
/* Was j=(exp)?5:EVP_CIPHER_key_length(c); */
|
1998-12-21 10:52:47 +00:00
|
|
|
k=EVP_CIPHER_iv_length(c);
|
|
|
|
if ( (which == SSL3_CHANGE_CIPHER_CLIENT_WRITE) ||
|
|
|
|
(which == SSL3_CHANGE_CIPHER_SERVER_READ))
|
|
|
|
{
|
|
|
|
ms= &(p[ 0]); n=i+i;
|
|
|
|
key= &(p[ n]); n+=j+j;
|
|
|
|
iv= &(p[ n]); n+=k+k;
|
|
|
|
er1= &(s->s3->client_random[0]);
|
|
|
|
er2= &(s->s3->server_random[0]);
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
n=i;
|
|
|
|
ms= &(p[ n]); n+=i+j;
|
|
|
|
key= &(p[ n]); n+=j+k;
|
|
|
|
iv= &(p[ n]); n+=k;
|
|
|
|
er1= &(s->s3->server_random[0]);
|
|
|
|
er2= &(s->s3->client_random[0]);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (n > s->s3->tmp.key_block_length)
|
|
|
|
{
|
2001-03-07 01:19:07 +00:00
|
|
|
SSLerr(SSL_F_SSL3_CHANGE_CIPHER_STATE,ERR_R_INTERNAL_ERROR);
|
1998-12-21 10:52:47 +00:00
|
|
|
goto err2;
|
|
|
|
}
|
|
|
|
|
2001-07-30 23:57:25 +00:00
|
|
|
EVP_MD_CTX_init(&md);
|
1998-12-21 10:52:47 +00:00
|
|
|
memcpy(mac_secret,ms,i);
|
|
|
|
if (exp)
|
|
|
|
{
|
|
|
|
/* In here I set both the read and write key/iv to the
|
|
|
|
* same value since only the correct one will be used :-).
|
|
|
|
*/
|
2001-10-16 01:24:29 +00:00
|
|
|
EVP_DigestInit_ex(&md,EVP_md5(), NULL);
|
2001-06-19 22:30:40 +00:00
|
|
|
EVP_DigestUpdate(&md,key,j);
|
|
|
|
EVP_DigestUpdate(&md,er1,SSL3_RANDOM_SIZE);
|
|
|
|
EVP_DigestUpdate(&md,er2,SSL3_RANDOM_SIZE);
|
2001-10-16 01:24:29 +00:00
|
|
|
EVP_DigestFinal_ex(&md,&(exp_key[0]),NULL);
|
1998-12-21 10:52:47 +00:00
|
|
|
key= &(exp_key[0]);
|
|
|
|
|
1998-12-21 10:56:39 +00:00
|
|
|
if (k > 0)
|
|
|
|
{
|
2001-10-16 01:24:29 +00:00
|
|
|
EVP_DigestInit_ex(&md,EVP_md5(), NULL);
|
2001-06-19 22:30:40 +00:00
|
|
|
EVP_DigestUpdate(&md,er1,SSL3_RANDOM_SIZE);
|
|
|
|
EVP_DigestUpdate(&md,er2,SSL3_RANDOM_SIZE);
|
2001-10-16 01:24:29 +00:00
|
|
|
EVP_DigestFinal_ex(&md,&(exp_iv[0]),NULL);
|
1998-12-21 10:56:39 +00:00
|
|
|
iv= &(exp_iv[0]);
|
|
|
|
}
|
1998-12-21 10:52:47 +00:00
|
|
|
}
|
|
|
|
|
1998-12-21 10:56:39 +00:00
|
|
|
s->session->key_arg_length=0;
|
1998-12-21 10:52:47 +00:00
|
|
|
|
2001-10-17 00:37:12 +00:00
|
|
|
EVP_CipherInit_ex(dd,c,NULL,key,iv,(which & SSL3_CC_WRITE));
|
1998-12-21 10:56:39 +00:00
|
|
|
|
1998-12-21 10:52:47 +00:00
|
|
|
memset(&(exp_key[0]),0,sizeof(exp_key));
|
|
|
|
memset(&(exp_iv[0]),0,sizeof(exp_iv));
|
2001-07-30 23:57:25 +00:00
|
|
|
EVP_MD_CTX_cleanup(&md);
|
1998-12-21 10:52:47 +00:00
|
|
|
return(1);
|
|
|
|
err:
|
|
|
|
SSLerr(SSL_F_SSL3_CHANGE_CIPHER_STATE,ERR_R_MALLOC_FAILURE);
|
|
|
|
err2:
|
|
|
|
return(0);
|
|
|
|
}
|
|
|
|
|
1999-04-19 21:31:43 +00:00
|
|
|
int ssl3_setup_key_block(SSL *s)
|
1998-12-21 10:52:47 +00:00
|
|
|
{
|
|
|
|
unsigned char *p;
|
1999-04-17 21:25:43 +00:00
|
|
|
const EVP_CIPHER *c;
|
|
|
|
const EVP_MD *hash;
|
1999-02-21 20:03:24 +00:00
|
|
|
int num;
|
2002-04-13 22:51:26 +00:00
|
|
|
int ret = 0;
|
Updates to the new SSL compression code
[Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
Fix so that the version number in the master secret, when passed
via RSA, checks that if TLS was proposed, but we roll back to SSLv3
(because the server will not accept higher), that the version number
is 0x03,0x01, not 0x03,0x00
[Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
Submitted by:
Reviewed by:
PR:
1999-02-16 09:22:21 +00:00
|
|
|
SSL_COMP *comp;
|
1998-12-21 10:52:47 +00:00
|
|
|
|
|
|
|
if (s->s3->tmp.key_block_length != 0)
|
|
|
|
return(1);
|
|
|
|
|
Updates to the new SSL compression code
[Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
Fix so that the version number in the master secret, when passed
via RSA, checks that if TLS was proposed, but we roll back to SSLv3
(because the server will not accept higher), that the version number
is 0x03,0x01, not 0x03,0x00
[Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
Submitted by:
Reviewed by:
PR:
1999-02-16 09:22:21 +00:00
|
|
|
if (!ssl_cipher_get_evp(s->session,&c,&hash,&comp))
|
1998-12-21 10:52:47 +00:00
|
|
|
{
|
|
|
|
SSLerr(SSL_F_SSL3_SETUP_KEY_BLOCK,SSL_R_CIPHER_OR_HASH_UNAVAILABLE);
|
|
|
|
return(0);
|
|
|
|
}
|
|
|
|
|
|
|
|
s->s3->tmp.new_sym_enc=c;
|
|
|
|
s->s3->tmp.new_hash=hash;
|
Updates to the new SSL compression code
[Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
Fix so that the version number in the master secret, when passed
via RSA, checks that if TLS was proposed, but we roll back to SSLv3
(because the server will not accept higher), that the version number
is 0x03,0x01, not 0x03,0x00
[Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
Submitted by:
Reviewed by:
PR:
1999-02-16 09:22:21 +00:00
|
|
|
s->s3->tmp.new_compression=comp;
|
1998-12-21 10:52:47 +00:00
|
|
|
|
|
|
|
num=EVP_CIPHER_key_length(c)+EVP_MD_size(hash)+EVP_CIPHER_iv_length(c);
|
|
|
|
num*=2;
|
|
|
|
|
|
|
|
ssl3_cleanup_key_block(s);
|
|
|
|
|
2000-06-01 22:19:21 +00:00
|
|
|
if ((p=OPENSSL_malloc(num)) == NULL)
|
1998-12-21 10:52:47 +00:00
|
|
|
goto err;
|
|
|
|
|
|
|
|
s->s3->tmp.key_block_length=num;
|
|
|
|
s->s3->tmp.key_block=p;
|
|
|
|
|
2002-04-13 22:51:26 +00:00
|
|
|
ret = ssl3_generate_key_block(s,p,num);
|
|
|
|
|
2002-06-14 12:20:27 +00:00
|
|
|
if (!(s->options & SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS))
|
|
|
|
{
|
|
|
|
/* enable vulnerability countermeasure for CBC ciphers with
|
|
|
|
* known-IV problem (http://www.openssl.org/~bodo/tls-cbc.txt)
|
|
|
|
*/
|
|
|
|
s->s3->need_empty_fragments = 1;
|
|
|
|
|
2002-07-09 08:48:49 +00:00
|
|
|
if (s->session->cipher != NULL)
|
|
|
|
{
|
|
|
|
if ((s->session->cipher->algorithms & SSL_ENC_MASK) == SSL_eNULL)
|
|
|
|
s->s3->need_empty_fragments = 0;
|
|
|
|
|
2002-04-13 22:51:26 +00:00
|
|
|
#ifndef OPENSSL_NO_RC4
|
2002-07-09 08:48:49 +00:00
|
|
|
if ((s->session->cipher->algorithms & SSL_ENC_MASK) == SSL_RC4)
|
|
|
|
s->s3->need_empty_fragments = 0;
|
2002-04-13 22:51:26 +00:00
|
|
|
#endif
|
2002-07-09 08:48:49 +00:00
|
|
|
}
|
2002-06-14 12:20:27 +00:00
|
|
|
}
|
1998-12-21 10:52:47 +00:00
|
|
|
|
2002-04-13 22:51:26 +00:00
|
|
|
return ret;
|
|
|
|
|
1998-12-21 10:52:47 +00:00
|
|
|
err:
|
|
|
|
SSLerr(SSL_F_SSL3_SETUP_KEY_BLOCK,ERR_R_MALLOC_FAILURE);
|
|
|
|
return(0);
|
|
|
|
}
|
|
|
|
|
1999-04-19 21:31:43 +00:00
|
|
|
void ssl3_cleanup_key_block(SSL *s)
|
1998-12-21 10:52:47 +00:00
|
|
|
{
|
|
|
|
if (s->s3->tmp.key_block != NULL)
|
|
|
|
{
|
|
|
|
memset(s->s3->tmp.key_block,0,
|
|
|
|
s->s3->tmp.key_block_length);
|
2000-06-01 22:19:21 +00:00
|
|
|
OPENSSL_free(s->s3->tmp.key_block);
|
1998-12-21 10:52:47 +00:00
|
|
|
s->s3->tmp.key_block=NULL;
|
|
|
|
}
|
|
|
|
s->s3->tmp.key_block_length=0;
|
|
|
|
}
|
|
|
|
|
1999-04-19 21:31:43 +00:00
|
|
|
int ssl3_enc(SSL *s, int send)
|
1998-12-21 10:52:47 +00:00
|
|
|
{
|
|
|
|
SSL3_RECORD *rec;
|
|
|
|
EVP_CIPHER_CTX *ds;
|
|
|
|
unsigned long l;
|
|
|
|
int bs,i;
|
1999-04-17 21:25:43 +00:00
|
|
|
const EVP_CIPHER *enc;
|
1998-12-21 10:52:47 +00:00
|
|
|
|
|
|
|
if (send)
|
|
|
|
{
|
|
|
|
ds=s->enc_write_ctx;
|
|
|
|
rec= &(s->s3->wrec);
|
|
|
|
if (s->enc_write_ctx == NULL)
|
1998-12-21 11:00:56 +00:00
|
|
|
enc=NULL;
|
1998-12-21 10:52:47 +00:00
|
|
|
else
|
|
|
|
enc=EVP_CIPHER_CTX_cipher(s->enc_write_ctx);
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
ds=s->enc_read_ctx;
|
|
|
|
rec= &(s->s3->rrec);
|
|
|
|
if (s->enc_read_ctx == NULL)
|
1998-12-21 11:00:56 +00:00
|
|
|
enc=NULL;
|
1998-12-21 10:52:47 +00:00
|
|
|
else
|
|
|
|
enc=EVP_CIPHER_CTX_cipher(s->enc_read_ctx);
|
|
|
|
}
|
|
|
|
|
|
|
|
if ((s->session == NULL) || (ds == NULL) ||
|
1998-12-21 11:00:56 +00:00
|
|
|
(enc == NULL))
|
1998-12-21 10:52:47 +00:00
|
|
|
{
|
2001-06-07 04:42:34 +00:00
|
|
|
memmove(rec->data,rec->input,rec->length);
|
1998-12-21 10:52:47 +00:00
|
|
|
rec->input=rec->data;
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
l=rec->length;
|
|
|
|
bs=EVP_CIPHER_block_size(ds->cipher);
|
|
|
|
|
1998-12-21 11:00:56 +00:00
|
|
|
/* COMPRESS */
|
|
|
|
|
1998-12-21 10:52:47 +00:00
|
|
|
if ((bs != 1) && send)
|
|
|
|
{
|
|
|
|
i=bs-((int)l%bs);
|
|
|
|
|
|
|
|
/* we need to add 'i-1' padding bytes */
|
|
|
|
l+=i;
|
|
|
|
rec->length+=i;
|
|
|
|
rec->input[l-1]=(i-1);
|
|
|
|
}
|
2001-06-15 18:05:09 +00:00
|
|
|
|
|
|
|
if (!send)
|
|
|
|
{
|
|
|
|
if (l == 0 || l%bs != 0)
|
|
|
|
{
|
|
|
|
SSLerr(SSL_F_SSL3_ENC,SSL_R_BLOCK_CIPHER_PAD_IS_WRONG);
|
2001-09-20 18:35:52 +00:00
|
|
|
ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECRYPTION_FAILED);
|
|
|
|
return 0;
|
2001-06-15 18:05:09 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
1998-12-21 10:52:47 +00:00
|
|
|
EVP_Cipher(ds,rec->data,rec->input,l);
|
|
|
|
|
|
|
|
if ((bs != 1) && !send)
|
|
|
|
{
|
|
|
|
i=rec->data[l-1]+1;
|
2001-06-15 18:05:09 +00:00
|
|
|
/* SSL 3.0 bounds the number of padding bytes by the block size;
|
|
|
|
* padding bytes (except that last) are arbitrary */
|
1998-12-21 10:52:47 +00:00
|
|
|
if (i > bs)
|
|
|
|
{
|
2001-09-20 18:35:52 +00:00
|
|
|
/* Incorrect padding. SSLerr() and ssl3_alert are done
|
|
|
|
* by caller: we don't want to reveal whether this is
|
2001-09-24 07:56:45 +00:00
|
|
|
* a decryption error or a MAC verification failure
|
|
|
|
* (see http://www.openssl.org/~bodo/tls-cbc.txt) */
|
2001-09-20 18:35:52 +00:00
|
|
|
return -1;
|
1998-12-21 10:52:47 +00:00
|
|
|
}
|
|
|
|
rec->length-=i;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
return(1);
|
|
|
|
}
|
|
|
|
|
1999-04-19 21:31:43 +00:00
|
|
|
void ssl3_init_finished_mac(SSL *s)
|
1998-12-21 10:52:47 +00:00
|
|
|
{
|
2001-10-16 01:24:29 +00:00
|
|
|
EVP_DigestInit_ex(&(s->s3->finish_dgst1),s->ctx->md5, NULL);
|
|
|
|
EVP_DigestInit_ex(&(s->s3->finish_dgst2),s->ctx->sha1, NULL);
|
1998-12-21 10:52:47 +00:00
|
|
|
}
|
|
|
|
|
1999-04-19 21:31:43 +00:00
|
|
|
void ssl3_finish_mac(SSL *s, const unsigned char *buf, int len)
|
1998-12-21 10:52:47 +00:00
|
|
|
{
|
|
|
|
EVP_DigestUpdate(&(s->s3->finish_dgst1),buf,len);
|
|
|
|
EVP_DigestUpdate(&(s->s3->finish_dgst2),buf,len);
|
|
|
|
}
|
|
|
|
|
1999-04-19 21:31:43 +00:00
|
|
|
int ssl3_cert_verify_mac(SSL *s, EVP_MD_CTX *ctx, unsigned char *p)
|
1998-12-21 10:56:39 +00:00
|
|
|
{
|
|
|
|
return(ssl3_handshake_mac(s,ctx,NULL,0,p));
|
|
|
|
}
|
|
|
|
|
1999-04-19 21:31:43 +00:00
|
|
|
int ssl3_final_finish_mac(SSL *s, EVP_MD_CTX *ctx1, EVP_MD_CTX *ctx2,
|
2000-01-05 23:31:47 +00:00
|
|
|
const char *sender, int len, unsigned char *p)
|
1998-12-21 10:56:39 +00:00
|
|
|
{
|
|
|
|
int ret;
|
|
|
|
|
|
|
|
ret=ssl3_handshake_mac(s,ctx1,sender,len,p);
|
|
|
|
p+=ret;
|
|
|
|
ret+=ssl3_handshake_mac(s,ctx2,sender,len,p);
|
|
|
|
return(ret);
|
|
|
|
}
|
|
|
|
|
1999-04-19 21:31:43 +00:00
|
|
|
static int ssl3_handshake_mac(SSL *s, EVP_MD_CTX *in_ctx,
|
2000-01-06 00:24:24 +00:00
|
|
|
const char *sender, int len, unsigned char *p)
|
1998-12-21 10:52:47 +00:00
|
|
|
{
|
|
|
|
unsigned int ret;
|
|
|
|
int npad,n;
|
|
|
|
unsigned int i;
|
|
|
|
unsigned char md_buf[EVP_MAX_MD_SIZE];
|
|
|
|
EVP_MD_CTX ctx;
|
|
|
|
|
2001-07-30 23:57:25 +00:00
|
|
|
EVP_MD_CTX_init(&ctx);
|
2001-10-16 01:24:29 +00:00
|
|
|
EVP_MD_CTX_copy_ex(&ctx,in_ctx);
|
1998-12-21 10:52:47 +00:00
|
|
|
|
|
|
|
n=EVP_MD_CTX_size(&ctx);
|
|
|
|
npad=(48/n)*n;
|
|
|
|
|
|
|
|
if (sender != NULL)
|
1998-12-21 10:56:39 +00:00
|
|
|
EVP_DigestUpdate(&ctx,sender,len);
|
1998-12-21 10:52:47 +00:00
|
|
|
EVP_DigestUpdate(&ctx,s->session->master_key,
|
|
|
|
s->session->master_key_length);
|
|
|
|
EVP_DigestUpdate(&ctx,ssl3_pad_1,npad);
|
2001-10-16 01:24:29 +00:00
|
|
|
EVP_DigestFinal_ex(&ctx,md_buf,&i);
|
1998-12-21 10:52:47 +00:00
|
|
|
|
2001-10-16 01:24:29 +00:00
|
|
|
EVP_DigestInit_ex(&ctx,EVP_MD_CTX_md(&ctx), NULL);
|
1998-12-21 10:52:47 +00:00
|
|
|
EVP_DigestUpdate(&ctx,s->session->master_key,
|
|
|
|
s->session->master_key_length);
|
|
|
|
EVP_DigestUpdate(&ctx,ssl3_pad_2,npad);
|
|
|
|
EVP_DigestUpdate(&ctx,md_buf,i);
|
2001-10-16 01:24:29 +00:00
|
|
|
EVP_DigestFinal_ex(&ctx,p,&ret);
|
1998-12-21 10:52:47 +00:00
|
|
|
|
2001-07-30 23:57:25 +00:00
|
|
|
EVP_MD_CTX_cleanup(&ctx);
|
1998-12-21 10:52:47 +00:00
|
|
|
|
|
|
|
return((int)ret);
|
|
|
|
}
|
|
|
|
|
1999-04-19 21:31:43 +00:00
|
|
|
int ssl3_mac(SSL *ssl, unsigned char *md, int send)
|
1998-12-21 10:52:47 +00:00
|
|
|
{
|
|
|
|
SSL3_RECORD *rec;
|
|
|
|
unsigned char *mac_sec,*seq;
|
|
|
|
EVP_MD_CTX md_ctx;
|
1999-04-17 21:25:43 +00:00
|
|
|
const EVP_MD *hash;
|
1998-12-21 10:52:47 +00:00
|
|
|
unsigned char *p,rec_char;
|
|
|
|
unsigned int md_size;
|
|
|
|
int npad,i;
|
|
|
|
|
|
|
|
if (send)
|
|
|
|
{
|
|
|
|
rec= &(ssl->s3->wrec);
|
|
|
|
mac_sec= &(ssl->s3->write_mac_secret[0]);
|
|
|
|
seq= &(ssl->s3->write_sequence[0]);
|
|
|
|
hash=ssl->write_hash;
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
rec= &(ssl->s3->rrec);
|
|
|
|
mac_sec= &(ssl->s3->read_mac_secret[0]);
|
|
|
|
seq= &(ssl->s3->read_sequence[0]);
|
|
|
|
hash=ssl->read_hash;
|
|
|
|
}
|
|
|
|
|
|
|
|
md_size=EVP_MD_size(hash);
|
|
|
|
npad=(48/md_size)*md_size;
|
|
|
|
|
|
|
|
/* Chop the digest off the end :-) */
|
2001-07-30 23:57:25 +00:00
|
|
|
EVP_MD_CTX_init(&md_ctx);
|
1998-12-21 10:52:47 +00:00
|
|
|
|
2001-10-16 01:24:29 +00:00
|
|
|
EVP_DigestInit_ex( &md_ctx,hash, NULL);
|
1998-12-21 10:52:47 +00:00
|
|
|
EVP_DigestUpdate(&md_ctx,mac_sec,md_size);
|
|
|
|
EVP_DigestUpdate(&md_ctx,ssl3_pad_1,npad);
|
|
|
|
EVP_DigestUpdate(&md_ctx,seq,8);
|
|
|
|
rec_char=rec->type;
|
|
|
|
EVP_DigestUpdate(&md_ctx,&rec_char,1);
|
|
|
|
p=md;
|
|
|
|
s2n(rec->length,p);
|
|
|
|
EVP_DigestUpdate(&md_ctx,md,2);
|
|
|
|
EVP_DigestUpdate(&md_ctx,rec->input,rec->length);
|
2001-10-16 01:24:29 +00:00
|
|
|
EVP_DigestFinal_ex( &md_ctx,md,NULL);
|
1998-12-21 10:52:47 +00:00
|
|
|
|
2001-10-16 01:24:29 +00:00
|
|
|
EVP_DigestInit_ex( &md_ctx,hash, NULL);
|
1998-12-21 10:52:47 +00:00
|
|
|
EVP_DigestUpdate(&md_ctx,mac_sec,md_size);
|
|
|
|
EVP_DigestUpdate(&md_ctx,ssl3_pad_2,npad);
|
|
|
|
EVP_DigestUpdate(&md_ctx,md,md_size);
|
2001-10-16 01:24:29 +00:00
|
|
|
EVP_DigestFinal_ex( &md_ctx,md,&md_size);
|
1998-12-21 10:52:47 +00:00
|
|
|
|
2001-07-30 23:57:25 +00:00
|
|
|
EVP_MD_CTX_cleanup(&md_ctx);
|
|
|
|
|
1998-12-21 10:52:47 +00:00
|
|
|
for (i=7; i>=0; i--)
|
2001-04-03 13:50:30 +00:00
|
|
|
{
|
|
|
|
++seq[i];
|
|
|
|
if (seq[i] != 0) break;
|
|
|
|
}
|
1998-12-21 10:52:47 +00:00
|
|
|
|
|
|
|
return(md_size);
|
|
|
|
}
|
|
|
|
|
1999-04-19 21:31:43 +00:00
|
|
|
int ssl3_generate_master_secret(SSL *s, unsigned char *out, unsigned char *p,
|
|
|
|
int len)
|
1998-12-21 10:52:47 +00:00
|
|
|
{
|
1999-04-17 21:25:43 +00:00
|
|
|
static const unsigned char *salt[3]={
|
1999-06-04 21:54:13 +00:00
|
|
|
#ifndef CHARSET_EBCDIC
|
1999-04-17 21:25:43 +00:00
|
|
|
(const unsigned char *)"A",
|
|
|
|
(const unsigned char *)"BB",
|
|
|
|
(const unsigned char *)"CCC",
|
1999-06-04 21:54:13 +00:00
|
|
|
#else
|
|
|
|
(const unsigned char *)"\x41",
|
|
|
|
(const unsigned char *)"\x42\x42",
|
|
|
|
(const unsigned char *)"\x43\x43\x43",
|
|
|
|
#endif
|
1998-12-21 10:52:47 +00:00
|
|
|
};
|
|
|
|
unsigned char buf[EVP_MAX_MD_SIZE];
|
|
|
|
EVP_MD_CTX ctx;
|
|
|
|
int i,ret=0;
|
|
|
|
unsigned int n;
|
|
|
|
|
2001-07-30 23:57:25 +00:00
|
|
|
EVP_MD_CTX_init(&ctx);
|
1998-12-21 10:52:47 +00:00
|
|
|
for (i=0; i<3; i++)
|
|
|
|
{
|
2001-10-16 01:24:29 +00:00
|
|
|
EVP_DigestInit_ex(&ctx,s->ctx->sha1, NULL);
|
1999-04-17 21:25:43 +00:00
|
|
|
EVP_DigestUpdate(&ctx,salt[i],strlen((const char *)salt[i]));
|
1998-12-21 10:52:47 +00:00
|
|
|
EVP_DigestUpdate(&ctx,p,len);
|
|
|
|
EVP_DigestUpdate(&ctx,&(s->s3->client_random[0]),
|
|
|
|
SSL3_RANDOM_SIZE);
|
|
|
|
EVP_DigestUpdate(&ctx,&(s->s3->server_random[0]),
|
|
|
|
SSL3_RANDOM_SIZE);
|
2001-10-16 01:24:29 +00:00
|
|
|
EVP_DigestFinal_ex(&ctx,buf,&n);
|
1998-12-21 10:52:47 +00:00
|
|
|
|
2001-10-16 01:24:29 +00:00
|
|
|
EVP_DigestInit_ex(&ctx,s->ctx->md5, NULL);
|
1998-12-21 10:52:47 +00:00
|
|
|
EVP_DigestUpdate(&ctx,p,len);
|
|
|
|
EVP_DigestUpdate(&ctx,buf,n);
|
2001-10-16 01:24:29 +00:00
|
|
|
EVP_DigestFinal_ex(&ctx,out,&n);
|
1998-12-21 10:52:47 +00:00
|
|
|
out+=n;
|
|
|
|
ret+=n;
|
|
|
|
}
|
2001-07-30 23:57:25 +00:00
|
|
|
EVP_MD_CTX_cleanup(&ctx);
|
1998-12-21 10:52:47 +00:00
|
|
|
return(ret);
|
|
|
|
}
|
|
|
|
|
1999-04-19 21:31:43 +00:00
|
|
|
int ssl3_alert_code(int code)
|
1998-12-21 10:56:39 +00:00
|
|
|
{
|
|
|
|
switch (code)
|
|
|
|
{
|
|
|
|
case SSL_AD_CLOSE_NOTIFY: return(SSL3_AD_CLOSE_NOTIFY);
|
|
|
|
case SSL_AD_UNEXPECTED_MESSAGE: return(SSL3_AD_UNEXPECTED_MESSAGE);
|
|
|
|
case SSL_AD_BAD_RECORD_MAC: return(SSL3_AD_BAD_RECORD_MAC);
|
|
|
|
case SSL_AD_DECRYPTION_FAILED: return(SSL3_AD_BAD_RECORD_MAC);
|
|
|
|
case SSL_AD_RECORD_OVERFLOW: return(SSL3_AD_BAD_RECORD_MAC);
|
|
|
|
case SSL_AD_DECOMPRESSION_FAILURE:return(SSL3_AD_DECOMPRESSION_FAILURE);
|
|
|
|
case SSL_AD_HANDSHAKE_FAILURE: return(SSL3_AD_HANDSHAKE_FAILURE);
|
|
|
|
case SSL_AD_NO_CERTIFICATE: return(SSL3_AD_NO_CERTIFICATE);
|
|
|
|
case SSL_AD_BAD_CERTIFICATE: return(SSL3_AD_BAD_CERTIFICATE);
|
|
|
|
case SSL_AD_UNSUPPORTED_CERTIFICATE:return(SSL3_AD_UNSUPPORTED_CERTIFICATE);
|
|
|
|
case SSL_AD_CERTIFICATE_REVOKED:return(SSL3_AD_CERTIFICATE_REVOKED);
|
|
|
|
case SSL_AD_CERTIFICATE_EXPIRED:return(SSL3_AD_CERTIFICATE_EXPIRED);
|
|
|
|
case SSL_AD_CERTIFICATE_UNKNOWN:return(SSL3_AD_CERTIFICATE_UNKNOWN);
|
|
|
|
case SSL_AD_ILLEGAL_PARAMETER: return(SSL3_AD_ILLEGAL_PARAMETER);
|
|
|
|
case SSL_AD_UNKNOWN_CA: return(SSL3_AD_BAD_CERTIFICATE);
|
|
|
|
case SSL_AD_ACCESS_DENIED: return(SSL3_AD_HANDSHAKE_FAILURE);
|
|
|
|
case SSL_AD_DECODE_ERROR: return(SSL3_AD_HANDSHAKE_FAILURE);
|
|
|
|
case SSL_AD_DECRYPT_ERROR: return(SSL3_AD_HANDSHAKE_FAILURE);
|
2000-02-03 23:23:24 +00:00
|
|
|
case SSL_AD_EXPORT_RESTRICTION: return(SSL3_AD_HANDSHAKE_FAILURE);
|
1998-12-21 10:56:39 +00:00
|
|
|
case SSL_AD_PROTOCOL_VERSION: return(SSL3_AD_HANDSHAKE_FAILURE);
|
|
|
|
case SSL_AD_INSUFFICIENT_SECURITY:return(SSL3_AD_HANDSHAKE_FAILURE);
|
|
|
|
case SSL_AD_INTERNAL_ERROR: return(SSL3_AD_HANDSHAKE_FAILURE);
|
2000-02-03 23:23:24 +00:00
|
|
|
case SSL_AD_USER_CANCELLED: return(SSL3_AD_HANDSHAKE_FAILURE);
|
1998-12-21 10:56:39 +00:00
|
|
|
case SSL_AD_NO_RENEGOTIATION: return(-1); /* Don't send it :-) */
|
|
|
|
default: return(-1);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|