* 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,
HMAC_CTX_init(&ctx);
HMAC_CTX_init(&ctx_tmp);
- HMAC_Init(&ctx,sec,sec_len,md);
- HMAC_Init(&ctx_tmp,sec,sec_len,md);
+ HMAC_Init_ex(&ctx,sec,sec_len,md, NULL);
+ HMAC_Init_ex(&ctx_tmp,sec,sec_len,md, NULL);
HMAC_Update(&ctx,seed,seed_len);
HMAC_Final(&ctx,A1,&A1_len);
n=0;
for (;;)
{
- HMAC_Init(&ctx,NULL,0,NULL); /* re-init */
- HMAC_Init(&ctx_tmp,NULL,0,NULL); /* re-init */
+ HMAC_Init_ex(&ctx,NULL,0,NULL,NULL); /* re-init */
+ HMAC_Init_ex(&ctx_tmp,NULL,0,NULL,NULL); /* re-init */
HMAC_Update(&ctx,A1,A1_len);
HMAC_Update(&ctx_tmp,A1,A1_len);
HMAC_Update(&ctx,seed,seed_len);
const EVP_CIPHER *c;
const SSL_COMP *comp;
const EVP_MD *m;
- int _exp,n,i,j,k,exp_label_len,cl;
+ int is_export,n,i,j,k,exp_label_len,cl;
+ int reuse_dd = 0;
- _exp=SSL_C_IS_EXPORT(s->s3->tmp.new_cipher);
+ is_export=SSL_C_IS_EXPORT(s->s3->tmp.new_cipher);
c=s->s3->tmp.new_sym_enc;
m=s->s3->tmp.new_hash;
comp=s->s3->tmp.new_compression;
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)
+ reuse_dd = 1;
+ else if ((s->enc_write_ctx=OPENSSL_malloc(sizeof(EVP_CIPHER_CTX))) == NULL)
+ goto err;
if ((s->enc_write_ctx == NULL) &&
((s->enc_write_ctx=(EVP_CIPHER_CTX *)
OPENSSL_malloc(sizeof(EVP_CIPHER_CTX))) == NULL))
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;
i=EVP_MD_size(m);
cl=EVP_CIPHER_key_length(c);
- j=_exp ? (cl < SSL_C_EXPORT_KEYLENGTH(s->s3->tmp.new_cipher) ?
- cl : SSL_C_EXPORT_KEYLENGTH(s->s3->tmp.new_cipher)) : cl;
+ j=is_export ? (cl < SSL_C_EXPORT_KEYLENGTH(s->s3->tmp.new_cipher) ?
+ cl : SSL_C_EXPORT_KEYLENGTH(s->s3->tmp.new_cipher)) : cl;
/* Was j=(exp)?5:EVP_CIPHER_key_length(c); */
k=EVP_CIPHER_iv_length(c);
er1= &(s->s3->client_random[0]);
printf("which = %04X\nmac key=",which);
{ int z; for (z=0; z<i; z++) printf("%02X%c",ms[z],((z+1)%16)?' ':'\n'); }
#endif
- if (_exp)
+ if (is_export)
{
/* In here I set both the read and write key/iv to the
* same value since only the correct one will be used :-).
#ifdef KSSL_DEBUG
{
int i;
- printf("EVP_CipherInit(dd,c,key=,iv=,which)\n");
+ printf("EVP_CipherInit_ex(dd,c,key=,iv=,which)\n");
printf("\tkey= "); for (i=0; i<c->key_len; i++) printf("%02x", key[i]);
printf("\n");
printf("\t iv= "); for (i=0; i<c->iv_len; i++) printf("%02x", iv[i]);
}
#endif /* KSSL_DEBUG */
- EVP_CipherInit(dd,c,key,iv,(which & SSL3_CC_WRITE));
+ EVP_CipherInit_ex(dd,c,NULL,key,iv,(which & SSL3_CC_WRITE));
#ifdef TLS_DEBUG
printf("which = %04X\nkey=",which);
{ int z; for (z=0; z<EVP_CIPHER_key_length(c); z++) printf("%02X%c",key[z],((z+1)%16)?' ':'\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);
if (l == 0 || l%bs != 0)
{
SSLerr(SSL_F_TLS1_ENC,SSL_R_BLOCK_CIPHER_PAD_IS_WRONG);
- ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECRYPT_ERROR);
- return(0);
+ ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECRYPTION_FAILED);
+ return 0;
}
}
* All of them must have value 'padding_length'. */
if (i > (int)rec->length)
{
- SSLerr(SSL_F_TLS1_ENC,SSL_R_BLOCK_CIPHER_PAD_IS_WRONG);
- ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECRYPTION_FAILED);
- return(0);
+ /* Incorrect padding. SSLerr() and ssl3_alert are done
+ * by caller: we don't want to reveal whether this is
+ * a decryption error or a MAC verification failure
+ * (see http://www.openssl.org/~bodo/tls-cbc.txt) */
+ return -1;
}
for (j=(int)(l-i); j<(int)l; j++)
{
if (rec->data[j] != ii)
{
- SSLerr(SSL_F_TLS1_ENC,SSL_R_DECRYPTION_FAILED);
- ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECRYPTION_FAILED);
- return(0);
+ /* Incorrect padding */
+ return -1;
}
}
rec->length-=i;
EVP_MD_CTX ctx;
EVP_MD_CTX_init(&ctx);
- EVP_MD_CTX_copy(&ctx,in_ctx);
- EVP_DigestFinal(&ctx,out,&ret);
+ EVP_MD_CTX_copy_ex(&ctx,in_ctx);
+ EVP_DigestFinal_ex(&ctx,out,&ret);
EVP_MD_CTX_cleanup(&ctx);
return((int)ret);
}
q+=slen;
EVP_MD_CTX_init(&ctx);
- EVP_MD_CTX_copy(&ctx,in1_ctx);
- EVP_DigestFinal(&ctx,q,&i);
+ EVP_MD_CTX_copy_ex(&ctx,in1_ctx);
+ EVP_DigestFinal_ex(&ctx,q,&i);
q+=i;
- EVP_MD_CTX_copy(&ctx,in2_ctx);
- EVP_DigestFinal(&ctx,q,&i);
+ EVP_MD_CTX_copy_ex(&ctx,in2_ctx);
+ EVP_DigestFinal_ex(&ctx,q,&i);
q+=i;
tls1_PRF(s->ctx->md5,s->ctx->sha1,buf,(int)(q-buf),
/* I should fix this up TLS TLS TLS TLS TLS XXXXXXXX */
HMAC_CTX_init(&hmac);
- HMAC_Init(&hmac,mac_sec,EVP_MD_size(hash),hash);
+ HMAC_Init_ex(&hmac,mac_sec,EVP_MD_size(hash),hash,NULL);
HMAC_Update(&hmac,seq,8);
HMAC_Update(&hmac,buf,5);
HMAC_Update(&hmac,rec->input,rec->length);