* copied and put under another distribution licence
* [including the GNU Public Licence.]
*/
+/* ====================================================================
+ * Copyright (c) 1998-2002 The OpenSSL Project. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ * software must display the following acknowledgment:
+ * "This product includes software developed by the OpenSSL Project
+ * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ * endorse or promote products derived from this software without
+ * prior written permission. For written permission, please contact
+ * openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ * nor may "OpenSSL" appear in their names without prior written
+ * permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ * acknowledgment:
+ * "This product includes software developed by the OpenSSL Project
+ * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com). This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
#include <stdio.h>
-#include <openssl/evp.h>
#include "ssl_locl.h"
+#include <openssl/evp.h>
#include <openssl/md5.h>
static unsigned char ssl3_pad_1[48]={
const EVP_MD *m;
EVP_MD_CTX md;
int exp,n,i,j,k,cl;
+ int reuse_dd = 0;
exp=SSL_C_IS_EXPORT(s->s3->tmp.new_cipher);
c=s->s3->tmp.new_sym_enc;
if (which & SSL3_CC_READ)
{
- if ((s->enc_read_ctx == NULL) &&
- ((s->enc_read_ctx=(EVP_CIPHER_CTX *)
- OPENSSL_malloc(sizeof(EVP_CIPHER_CTX))) == NULL))
+ if (s->enc_read_ctx != NULL)
+ reuse_dd = 1;
+ else if ((s->enc_read_ctx=OPENSSL_malloc(sizeof(EVP_CIPHER_CTX))) == NULL)
goto err;
dd= s->enc_read_ctx;
s->read_hash=m;
}
else
{
- if ((s->enc_write_ctx == NULL) &&
- ((s->enc_write_ctx=(EVP_CIPHER_CTX *)
- OPENSSL_malloc(sizeof(EVP_CIPHER_CTX))) == NULL))
+ if (s->enc_write_ctx != NULL)
+ reuse_dd = 1;
+ else if ((s->enc_write_ctx=OPENSSL_malloc(sizeof(EVP_CIPHER_CTX))) == NULL)
goto err;
dd= s->enc_write_ctx;
s->write_hash=m;
mac_secret= &(s->s3->write_mac_secret[0]);
}
+ if (reuse_dd)
+ EVP_CIPHER_CTX_cleanup(dd);
EVP_CIPHER_CTX_init(dd);
p=s->s3->tmp.key_block;
s->session->key_arg_length=0;
- EVP_CipherInit(dd,c,key,iv,(which & SSL3_CC_WRITE));
+ EVP_CipherInit_ex(dd,c,NULL,key,iv,(which & SSL3_CC_WRITE));
memset(&(exp_key[0]),0,sizeof(exp_key));
memset(&(exp_iv[0]),0,sizeof(exp_iv));
const EVP_CIPHER *c;
const EVP_MD *hash;
int num;
+ int ret = 0;
SSL_COMP *comp;
if (s->s3->tmp.key_block_length != 0)
s->s3->tmp.key_block_length=num;
s->s3->tmp.key_block=p;
- return ssl3_generate_key_block(s,p,num);
+ ret = ssl3_generate_key_block(s,p,num);
+
+ 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;
+ if (s->session->cipher != NULL)
+ {
+ if ((s->session->cipher->algorithms & SSL_ENC_MASK) == SSL_eNULL)
+ s->s3->need_empty_fragments = 0;
+
+#ifndef OPENSSL_NO_RC4
+ if ((s->session->cipher->algorithms & SSL_ENC_MASK) == SSL_RC4)
+ s->s3->need_empty_fragments = 0;
+#endif
+ }
+ }
+
+ return ret;
+
err:
SSLerr(SSL_F_SSL3_SETUP_KEY_BLOCK,ERR_R_MALLOC_FAILURE);
return(0);
projects / openssl.git / blobdiff