* 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 "ssl_locl.h"
#include <openssl/comp.h>
#include <openssl/evp.h>
#include <openssl/hmac.h>
-#include "ssl_locl.h"
#include <openssl/md5.h>
static void tls1_P_hash(const EVP_MD *md, const unsigned char *sec,
unsigned int j;
HMAC_CTX ctx;
HMAC_CTX ctx_tmp;
- unsigned char A1[HMAC_MAX_MD_CBLOCK];
+ unsigned char A1[EVP_MAX_MD_SIZE];
unsigned int A1_len;
chunk=EVP_MD_size(md);
}
HMAC_CTX_cleanup(&ctx);
HMAC_CTX_cleanup(&ctx_tmp);
- memset(A1,0,sizeof(A1));
+ OPENSSL_cleanse(A1,sizeof(A1));
}
static void tls1_PRF(const EVP_MD *md5, const EVP_MD *sha1,
printf("\n");
#endif
- memset(tmp1,0,sizeof(tmp1));
- memset(tmp2,0,sizeof(tmp1));
- memset(iv1,0,sizeof(iv1));
- memset(iv2,0,sizeof(iv2));
+ OPENSSL_cleanse(tmp1,sizeof(tmp1));
+ OPENSSL_cleanse(tmp2,sizeof(tmp1));
+ OPENSSL_cleanse(iv1,sizeof(iv1));
+ OPENSSL_cleanse(iv2,sizeof(iv2));
return(1);
err:
SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE,ERR_R_MALLOC_FAILURE);
{ int z; for (z=0; z<s->session->master_key_length; z++) printf("%02X%c",s->session->master_key[z],((z+1)%16)?' ':'\n'); }
#endif
tls1_generate_key_block(s,p1,p2,num);
- memset(p2,0,num);
+ OPENSSL_cleanse(p2,num);
OPENSSL_free(p2);
#ifdef TLS_DEBUG
printf("\nkey block\n");
{ int z; for (z=0; z<num; z++) printf("%02X%c",p1[z],((z+1)%16)?' ':'\n'); }
#endif
+ 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(1);
err:
SSLerr(SSL_F_TLS1_SETUP_KEY_BLOCK,ERR_R_MALLOC_FAILURE);
tls1_PRF(s->ctx->md5,s->ctx->sha1,buf,(int)(q-buf),
s->session->master_key,s->session->master_key_length,
- out,buf2,12);
+ out,buf2,sizeof buf2);
EVP_MD_CTX_cleanup(&ctx);
- return((int)12);
+ return sizeof buf2;
}
int tls1_mac(SSL *ssl, unsigned char *md, int send)
s->s3->server_random,SSL3_RANDOM_SIZE);
tls1_PRF(s->ctx->md5,s->ctx->sha1,
buf,TLS_MD_MASTER_SECRET_CONST_SIZE+SSL3_RANDOM_SIZE*2,p,len,
- s->session->master_key,buff,SSL3_MASTER_SECRET_SIZE);
+ s->session->master_key,buff,sizeof buff);
#ifdef KSSL_DEBUG
printf ("tls1_generate_master_secret() complete\n");
#endif /* KSSL_DEBUG */
projects / openssl.git / blobdiff