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This commit is contained in:
zhaoxiaomeng
2018-01-04 13:38:57 +08:00
committed by Simon
parent d11f845fde
commit 53af3b51ae
2361 changed files with 387455 additions and 144458 deletions
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70
crypto/modes/ctr128.c
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@@ -1,16 +1,64 @@
/*
* Copyright 2008-2016 The OpenSSL Project Authors. All Rights Reserved.
/* ====================================================================
* 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.
* ====================================================================
*
* Licensed under the OpenSSL license (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>
/*
* NOTE: the IV/counter CTR mode is big-endian. The code itself is
* endian-neutral.
@@ -65,7 +113,7 @@ static void ctr128_inc_aligned(unsigned char *counter)
* before the first call to CRYPTO_ctr128_encrypt(). This algorithm assumes
* that the counter is in the x lower bits of the IV (ivec), and that the
* application has full control over overflow and the rest of the IV. This
* implementation takes NO responsibility for checking that the counter
* implementation takes NO responsability for checking that the counter
* doesn't overflow into the rest of the IV when incremented.
*/
void CRYPTO_ctr128_encrypt(const unsigned char *in, unsigned char *out,
@@ -77,6 +125,9 @@ void CRYPTO_ctr128_encrypt(const unsigned char *in, unsigned char *out,
unsigned int n;
size_t l = 0;
assert(in && out && key && ecount_buf && num);
assert(*num < 16);
n = *num;
#if !defined(OPENSSL_SMALL_FOOTPRINT)
@@ -152,6 +203,9 @@ void CRYPTO_ctr128_encrypt_ctr32(const unsigned char *in, unsigned char *out,
{
unsigned int n, ctr32;
assert(in && out && key && ecount_buf && num);
assert(*num < 16);
n = *num;
while (n && len) {
@@ -184,7 +238,7 @@ void CRYPTO_ctr128_encrypt_ctr32(const unsigned char *in, unsigned char *out,
(*func) (in, out, blocks, key, ivec);
/* (*ctr) does not update ivec, caller does: */
PUTU32(ivec + 12, ctr32);
/* ... overflow was detected, propagate carry. */
/* ... overflow was detected, propogate carry. */
if (ctr32 == 0)
ctr96_inc(ivec);
blocks *= 16;