X-Git-Url: https://git.openssl.org/?p=openssl.git;a=blobdiff_plain;f=crypto%2Fidea%2Fi_cbc.c;h=b6d236c4ab245c73448168948c488a6729bdcebc;hp=716ea3f474319d302b73cc23ba2d0550953311b5;hb=a941920514995b520e7666897347fdcdcb5bf358;hpb=7dfb0b774e6592dcbfe47015168a0ac8b44e2a17 diff --git a/crypto/idea/i_cbc.c b/crypto/idea/i_cbc.c index 716ea3f474..b6d236c4ab 100644 --- a/crypto/idea/i_cbc.c +++ b/crypto/idea/i_cbc.c @@ -1,175 +1,122 @@ -/* crypto/idea/i_cbc.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 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 "idea.h" +#include #include "idea_lcl.h" -void idea_cbc_encrypt(in, out, length, ks, iv, encrypt) -unsigned char *in; -unsigned char *out; -long length; -IDEA_KEY_SCHEDULE *ks; -unsigned char *iv; -int encrypt; - { - register unsigned long tin0,tin1; - register unsigned long tout0,tout1,xor0,xor1; - register long l=length; - unsigned long tin[2]; +void IDEA_cbc_encrypt(const unsigned char *in, unsigned char *out, + long length, IDEA_KEY_SCHEDULE *ks, unsigned char *iv, + int encrypt) +{ + register unsigned long tin0, tin1; + register unsigned long tout0, tout1, xor0, xor1; + register long l = length; + unsigned long tin[2]; - if (encrypt) - { - n2l(iv,tout0); - n2l(iv,tout1); - iv-=8; - for (l-=8; l>=0; l-=8) - { - n2l(in,tin0); - n2l(in,tin1); - tin0^=tout0; - tin1^=tout1; - tin[0]=tin0; - tin[1]=tin1; - idea_encrypt(tin,ks); - tout0=tin[0]; l2n(tout0,out); - tout1=tin[1]; l2n(tout1,out); - } - if (l != -8) - { - n2ln(in,tin0,tin1,l+8); - tin0^=tout0; - tin1^=tout1; - tin[0]=tin0; - tin[1]=tin1; - idea_encrypt(tin,ks); - tout0=tin[0]; l2n(tout0,out); - tout1=tin[1]; l2n(tout1,out); - } - l2n(tout0,iv); - l2n(tout1,iv); - } - else - { - n2l(iv,xor0); - n2l(iv,xor1); - iv-=8; - for (l-=8; l>=0; l-=8) - { - n2l(in,tin0); tin[0]=tin0; - n2l(in,tin1); tin[1]=tin1; - idea_encrypt(tin,ks); - tout0=tin[0]^xor0; - tout1=tin[1]^xor1; - l2n(tout0,out); - l2n(tout1,out); - xor0=tin0; - xor1=tin1; - } - if (l != -8) - { - n2l(in,tin0); tin[0]=tin0; - n2l(in,tin1); tin[1]=tin1; - idea_encrypt(tin,ks); - tout0=tin[0]^xor0; - tout1=tin[1]^xor1; - l2nn(tout0,tout1,out,l+8); - xor0=tin0; - xor1=tin1; - } - l2n(xor0,iv); - l2n(xor1,iv); - } - tin0=tin1=tout0=tout1=xor0=xor1=0; - tin[0]=tin[1]=0; - } + if (encrypt) { + n2l(iv, tout0); + n2l(iv, tout1); + iv -= 8; + for (l -= 8; l >= 0; l -= 8) { + n2l(in, tin0); + n2l(in, tin1); + tin0 ^= tout0; + tin1 ^= tout1; + tin[0] = tin0; + tin[1] = tin1; + IDEA_encrypt(tin, ks); + tout0 = tin[0]; + l2n(tout0, out); + tout1 = tin[1]; + l2n(tout1, out); + } + if (l != -8) { + n2ln(in, tin0, tin1, l + 8); + tin0 ^= tout0; + tin1 ^= tout1; + tin[0] = tin0; + tin[1] = tin1; + IDEA_encrypt(tin, ks); + tout0 = tin[0]; + l2n(tout0, out); + tout1 = tin[1]; + l2n(tout1, out); + } + l2n(tout0, iv); + l2n(tout1, iv); + } else { + n2l(iv, xor0); + n2l(iv, xor1); + iv -= 8; + for (l -= 8; l >= 0; l -= 8) { + n2l(in, tin0); + tin[0] = tin0; + n2l(in, tin1); + tin[1] = tin1; + IDEA_encrypt(tin, ks); + tout0 = tin[0] ^ xor0; + tout1 = tin[1] ^ xor1; + l2n(tout0, out); + l2n(tout1, out); + xor0 = tin0; + xor1 = tin1; + } + if (l != -8) { + n2l(in, tin0); + tin[0] = tin0; + n2l(in, tin1); + tin[1] = tin1; + IDEA_encrypt(tin, ks); + tout0 = tin[0] ^ xor0; + tout1 = tin[1] ^ xor1; + l2nn(tout0, tout1, out, l + 8); + xor0 = tin0; + xor1 = tin1; + } + l2n(xor0, iv); + l2n(xor1, iv); + } + tin0 = tin1 = tout0 = tout1 = xor0 = xor1 = 0; + tin[0] = tin[1] = 0; +} -void idea_encrypt(d,key) -unsigned long *d; -IDEA_KEY_SCHEDULE *key; - { - register IDEA_INT *p; - register unsigned long x1,x2,x3,x4,t0,t1,ul; +void IDEA_encrypt(unsigned long *d, IDEA_KEY_SCHEDULE *key) +{ + register IDEA_INT *p; + register unsigned long x1, x2, x3, x4, t0, t1, ul; - x2=d[0]; - x1=(x2>>16); - x4=d[1]; - x3=(x4>>16); + x2 = d[0]; + x1 = (x2 >> 16); + x4 = d[1]; + x3 = (x4 >> 16); - p= &(key->data[0][0]); + p = &(key->data[0][0]); - E_IDEA(0); - E_IDEA(1); - E_IDEA(2); - E_IDEA(3); - E_IDEA(4); - E_IDEA(5); - E_IDEA(6); - E_IDEA(7); + E_IDEA(0); + E_IDEA(1); + E_IDEA(2); + E_IDEA(3); + E_IDEA(4); + E_IDEA(5); + E_IDEA(6); + E_IDEA(7); - x1&=0xffff; - idea_mul(x1,x1,*p,ul); p++; + x1 &= 0xffff; + idea_mul(x1, x1, *p, ul); + p++; - t0= x3+ *(p++); - t1= x2+ *(p++); + t0 = x3 + *(p++); + t1 = x2 + *(p++); - x4&=0xffff; - idea_mul(x4,x4,*p,ul); + x4 &= 0xffff; + idea_mul(x4, x4, *p, ul); - d[0]=(t0&0xffff)|((x1&0xffff)<<16); - d[1]=(x4&0xffff)|((t1&0xffff)<<16); - } + d[0] = (t0 & 0xffff) | ((x1 & 0xffff) << 16); + d[1] = (x4 & 0xffff) | ((t1 & 0xffff) << 16); +}