X-Git-Url: https://git.openssl.org/?p=openssl.git;a=blobdiff_plain;f=crypto%2Fdes%2Fcbc_cksm.c;h=a7bf0689b255a560e408ba66742525525592f885;hp=8413c81b6bf79e29d8c9abef0186c9dfa746c3b6;hb=604c853d453282a3ef4d7d1ed8cbae57097c3813;hpb=a3654f058690bbb3d986d1a063b6c3742fd30af5 diff --git a/crypto/des/cbc_cksm.c b/crypto/des/cbc_cksm.c index 8413c81b6b..a7bf0689b2 100644 --- a/crypto/des/cbc_cksm.c +++ b/crypto/des/cbc_cksm.c @@ -1,107 +1,54 @@ -/* crypto/des/cbc_cksm.c */ -/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) - * All rights reserved. +/* + * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved. * - * This package is an SSL implementation written - * by Eric Young (eay@cryptsoft.com). - * The implementation was written so as to conform with Netscapes SSL. - * - * This library is free for commercial and non-commercial use as long as - * the following conditions are aheared to. The following conditions - * apply to all code found in this distribution, be it the RC4, RSA, - * lhash, DES, etc., code; not just the SSL code. The SSL documentation - * included with this distribution is covered by the same copyright terms - * except that the holder is Tim Hudson (tjh@cryptsoft.com). - * - * Copyright remains Eric Young's, and as such any Copyright notices in - * the code are not to be removed. - * If this package is used in a product, Eric Young should be given attribution - * as the author of the parts of the library used. - * This can be in the form of a textual message at program startup or - * in documentation (online or textual) provided with the package. - * - * 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 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 acknowledgement: - * "This product includes cryptographic software written by - * Eric Young (eay@cryptsoft.com)" - * The word 'cryptographic' can be left out if the rouines from the library - * being used are not cryptographic related :-). - * 4. If you include any Windows specific code (or a derivative thereof) from - * the apps directory (application code) you must include an acknowledgement: - * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" - * - * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND - * ANY EXPRESS 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 AUTHOR OR 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. - * - * The licence and distribution terms for any publically available version or - * derivative of this code cannot be changed. i.e. this code cannot simply be - * copied and put under another distribution licence - * [including the GNU Public Licence.] + * 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 #include "des_locl.h" DES_LONG DES_cbc_cksum(const unsigned char *in, DES_cblock *output, - long length, DES_key_schedule *schedule, - const_DES_cblock *ivec) - { - register DES_LONG tout0,tout1,tin0,tin1; - register long l=length; - DES_LONG tin[2]; - unsigned char *out = &(*output)[0]; - const unsigned char *iv = &(*ivec)[0]; + long length, DES_key_schedule *schedule, + const_DES_cblock *ivec) +{ + register DES_LONG tout0, tout1, tin0, tin1; + register long l = length; + DES_LONG tin[2]; + unsigned char *out = &(*output)[0]; + const unsigned char *iv = &(*ivec)[0]; - c2l(iv,tout0); - c2l(iv,tout1); - for (; l>0; l-=8) - { - if (l >= 8) - { - c2l(in,tin0); - c2l(in,tin1); - } - else - c2ln(in,tin0,tin1,l); - - tin0^=tout0; tin[0]=tin0; - tin1^=tout1; tin[1]=tin1; - DES_encrypt1((DES_LONG *)tin,schedule,DES_ENCRYPT); - /* fix 15/10/91 eay - thanks to keithr@sco.COM */ - tout0=tin[0]; - tout1=tin[1]; - } - if (out != NULL) - { - l2c(tout0,out); - l2c(tout1,out); - } - tout0=tin0=tin1=tin[0]=tin[1]=0; - /* - Transform the data in tout1 so that it will - match the return value that the MIT Kerberos - mit_des_cbc_cksum API returns. - */ - tout1 = ((tout1 >> 24L) & 0x000000FF) - | ((tout1 >> 8L) & 0x0000FF00) - | ((tout1 << 8L) & 0x00FF0000) - | ((tout1 << 24L) & 0xFF000000); - return(tout1); - } + c2l(iv, tout0); + c2l(iv, tout1); + for (; l > 0; l -= 8) { + if (l >= 8) { + c2l(in, tin0); + c2l(in, tin1); + } else + c2ln(in, tin0, tin1, l); + + tin0 ^= tout0; + tin[0] = tin0; + tin1 ^= tout1; + tin[1] = tin1; + DES_encrypt1((DES_LONG *)tin, schedule, DES_ENCRYPT); + /* fix 15/10/91 eay - thanks to keithr@sco.COM */ + tout0 = tin[0]; + tout1 = tin[1]; + } + if (out != NULL) { + l2c(tout0, out); + l2c(tout1, out); + } + tout0 = tin0 = tin1 = tin[0] = tin[1] = 0; + /* + * Transform the data in tout1 so that it will match the return value + * that the MIT Kerberos mit_des_cbc_cksum API returns. + */ + tout1 = ((tout1 >> 24L) & 0x000000FF) + | ((tout1 >> 8L) & 0x0000FF00) + | ((tout1 << 8L) & 0x00FF0000) + | ((tout1 << 24L) & 0xFF000000); + return (tout1); +}