Add documentation for CMS_EnvelopedData_create()

[openssl.git] / crypto / modes / cbc128.c

diff --git a/crypto/modes/cbc128.c b/crypto/modes/cbc128.c
index c13caea5355beb8a60daf5acd9f05b999738bf79..eec44bd91a5b1018becd151664a1538a0f4c88d6 100644 (file)
--- a/crypto/modes/cbc128.c
+++ b/crypto/modes/cbc128.c
@@ -1,63 +1,15 @@
-/* ====================================================================
- * Copyright (c) 2008 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.
- * ====================================================================
+/*
+ * Copyright 2008-2016 The OpenSSL Project Authors. All Rights Reserved.
  *
+ * Licensed under the Apache License 2.0 (the "License").  You may not use
+ * this file except in compliance with the License.  You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
  */
 
-#include <openssl/crypto.h>
-#include "modes_lcl.h"
 #include <string.h>
-
-#ifndef MODES_DEBUG
-# ifndef NDEBUG
-#  define NDEBUG
-# endif
-#endif
-#include <assert.h>
+#include <openssl/crypto.h>
+#include "crypto/modes.h"
 
 #if !defined(STRICT_ALIGNMENT) && !defined(PEDANTIC)
 # define STRICT_ALIGNMENT 0
@@ -70,7 +22,8 @@ void CRYPTO_cbc128_encrypt(const unsigned char *in, unsigned char *out,
     size_t n;
     const unsigned char *iv = ivec;
 
-    assert(in && out && key && ivec);
+    if (len == 0)
+        return;
 
 #if !defined(OPENSSL_SMALL_FOOTPRINT)
     if (STRICT_ALIGNMENT &&
@@ -123,7 +76,8 @@ void CRYPTO_cbc128_decrypt(const unsigned char *in, unsigned char *out,
         unsigned char c[16];
     } tmp;
 
-    assert(in && out && key && ivec);
+    if (len == 0)
+        return;
 
 #if !defined(OPENSSL_SMALL_FOOTPRINT)
     if (in != out) {