diff options
Diffstat (limited to 'Cryptlib/OpenSSL/crypto/modes/cfb128.c')
| -rw-r--r-- | Cryptlib/OpenSSL/crypto/modes/cfb128.c | 70 |
1 files changed, 63 insertions, 7 deletions
diff --git a/Cryptlib/OpenSSL/crypto/modes/cfb128.c b/Cryptlib/OpenSSL/crypto/modes/cfb128.c index e439567f..d4ecbd08 100644 --- a/Cryptlib/OpenSSL/crypto/modes/cfb128.c +++ b/Cryptlib/OpenSSL/crypto/modes/cfb128.c @@ -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> + /* * The input and output encrypted as though 128bit cfb mode is being used. * The extra state information to record how much of the 128bit block we have @@ -24,6 +72,8 @@ void CRYPTO_cfb128_encrypt(const unsigned char *in, unsigned char *out, unsigned int n; size_t l = 0; + assert(in && out && key && ivec && num); + n = *num; if (enc) { @@ -140,7 +190,7 @@ static void cfbr_encrypt_block(const unsigned char *in, unsigned char *out, block128_f block) { int n, rem, num; - unsigned char ovec[16 * 2 + 1]; /* +1 because we dereference (but don't + unsigned char ovec[16 * 2 + 1]; /* +1 because we dererefence (but don't * use) one byte off the end */ if (nbits <= 0 || nbits > 128) @@ -178,6 +228,9 @@ void CRYPTO_cfb128_1_encrypt(const unsigned char *in, unsigned char *out, size_t n; unsigned char c[1], d[1]; + assert(in && out && key && ivec && num); + assert(*num == 0); + for (n = 0; n < bits; ++n) { c[0] = (in[n / 8] & (1 << (7 - n % 8))) ? 0x80 : 0; cfbr_encrypt_block(c, d, 1, key, ivec, enc, block); @@ -193,6 +246,9 @@ void CRYPTO_cfb128_8_encrypt(const unsigned char *in, unsigned char *out, { size_t n; + assert(in && out && key && ivec && num); + assert(*num == 0); + for (n = 0; n < length; ++n) cfbr_encrypt_block(&in[n], &out[n], 8, key, ivec, enc, block); } |