X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=crypto%2Fidea%2Fi_skey.c;h=02853246dca4f204f08bcf8abc74af44e5367cc9;hb=6e290a25c2cbdc26119c0866c20d9292f9e64dd8;hp=bbbda6b5c8729ec35edd804dd52f2ea8996e3312;hpb=a9be3af5ad4836f7e50f0546311ca90c717b861e;p=oweals%2Fopenssl.git diff --git a/crypto/idea/i_skey.c b/crypto/idea/i_skey.c index bbbda6b5c8..02853246dc 100644 --- a/crypto/idea/i_skey.c +++ b/crypto/idea/i_skey.c @@ -1,156 +1,112 @@ -/* crypto/idea/i_skey.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 "idea_lcl.h" static IDEA_INT inverse(unsigned int xin); -void idea_set_encrypt_key(unsigned char *key, IDEA_KEY_SCHEDULE *ks) - { - int i; - register IDEA_INT *kt,*kf,r0,r1,r2; +void IDEA_set_encrypt_key(const unsigned char *key, IDEA_KEY_SCHEDULE *ks) +{ + int i; + register IDEA_INT *kt, *kf, r0, r1, r2; - kt= &(ks->data[0][0]); - n2s(key,kt[0]); n2s(key,kt[1]); n2s(key,kt[2]); n2s(key,kt[3]); - n2s(key,kt[4]); n2s(key,kt[5]); n2s(key,kt[6]); n2s(key,kt[7]); + kt = &(ks->data[0][0]); + n2s(key, kt[0]); + n2s(key, kt[1]); + n2s(key, kt[2]); + n2s(key, kt[3]); + n2s(key, kt[4]); + n2s(key, kt[5]); + n2s(key, kt[6]); + n2s(key, kt[7]); - kf=kt; - kt+=8; - for (i=0; i<6; i++) - { - r2= kf[1]; - r1= kf[2]; - *(kt++)= ((r2<<9) | (r1>>7))&0xffff; - r0= kf[3]; - *(kt++)= ((r1<<9) | (r0>>7))&0xffff; - r1= kf[4]; - *(kt++)= ((r0<<9) | (r1>>7))&0xffff; - r0= kf[5]; - *(kt++)= ((r1<<9) | (r0>>7))&0xffff; - r1= kf[6]; - *(kt++)= ((r0<<9) | (r1>>7))&0xffff; - r0= kf[7]; - *(kt++)= ((r1<<9) | (r0>>7))&0xffff; - r1= kf[0]; - if (i >= 5) break; - *(kt++)= ((r0<<9) | (r1>>7))&0xffff; - *(kt++)= ((r1<<9) | (r2>>7))&0xffff; - kf+=8; - } - } + kf = kt; + kt += 8; + for (i = 0; i < 6; i++) { + r2 = kf[1]; + r1 = kf[2]; + *(kt++) = ((r2 << 9) | (r1 >> 7)) & 0xffff; + r0 = kf[3]; + *(kt++) = ((r1 << 9) | (r0 >> 7)) & 0xffff; + r1 = kf[4]; + *(kt++) = ((r0 << 9) | (r1 >> 7)) & 0xffff; + r0 = kf[5]; + *(kt++) = ((r1 << 9) | (r0 >> 7)) & 0xffff; + r1 = kf[6]; + *(kt++) = ((r0 << 9) | (r1 >> 7)) & 0xffff; + r0 = kf[7]; + *(kt++) = ((r1 << 9) | (r0 >> 7)) & 0xffff; + r1 = kf[0]; + if (i >= 5) + break; + *(kt++) = ((r0 << 9) | (r1 >> 7)) & 0xffff; + *(kt++) = ((r1 << 9) | (r2 >> 7)) & 0xffff; + kf += 8; + } +} -void idea_set_decrypt_key(IDEA_KEY_SCHEDULE *ek, IDEA_KEY_SCHEDULE *dk) - { - int r; - register IDEA_INT *fp,*tp,t; +void IDEA_set_decrypt_key(IDEA_KEY_SCHEDULE *ek, IDEA_KEY_SCHEDULE *dk) +{ + int r; + register IDEA_INT *fp, *tp, t; - tp= &(dk->data[0][0]); - fp= &(ek->data[8][0]); - for (r=0; r<9; r++) - { - *(tp++)=inverse(fp[0]); - *(tp++)=((int)(0x10000L-fp[2])&0xffff); - *(tp++)=((int)(0x10000L-fp[1])&0xffff); - *(tp++)=inverse(fp[3]); - if (r == 8) break; - fp-=6; - *(tp++)=fp[4]; - *(tp++)=fp[5]; - } + tp = &(dk->data[0][0]); + fp = &(ek->data[8][0]); + for (r = 0; r < 9; r++) { + *(tp++) = inverse(fp[0]); + *(tp++) = ((int)(0x10000L - fp[2]) & 0xffff); + *(tp++) = ((int)(0x10000L - fp[1]) & 0xffff); + *(tp++) = inverse(fp[3]); + if (r == 8) + break; + fp -= 6; + *(tp++) = fp[4]; + *(tp++) = fp[5]; + } - tp= &(dk->data[0][0]); - t=tp[1]; - tp[1]=tp[2]; - tp[2]=t; + tp = &(dk->data[0][0]); + t = tp[1]; + tp[1] = tp[2]; + tp[2] = t; - t=tp[49]; - tp[49]=tp[50]; - tp[50]=t; - } + t = tp[49]; + tp[49] = tp[50]; + tp[50] = t; +} /* taken directly from the 'paper' I'll have a look at it later */ static IDEA_INT inverse(unsigned int xin) - { - long n1,n2,q,r,b1,b2,t; +{ + long n1, n2, q, r, b1, b2, t; - if (xin == 0) - b2=0; - else - { - n1=0x10001; - n2=xin; - b2=1; - b1=0; + if (xin == 0) + b2 = 0; + else { + n1 = 0x10001; + n2 = xin; + b2 = 1; + b1 = 0; - do { - r=(n1%n2); - q=(n1-r)/n2; - if (r == 0) - { if (b2 < 0) b2=0x10001+b2; } - else - { - n1=n2; - n2=r; - t=b2; - b2=b1-q*b2; - b1=t; - } - } while (r != 0); - } - return((IDEA_INT)b2); - } + do { + r = (n1 % n2); + q = (n1 - r) / n2; + if (r == 0) { + if (b2 < 0) + b2 = 0x10001 + b2; + } else { + n1 = n2; + n2 = r; + t = b2; + b2 = b1 - q * b2; + b1 = t; + } + } while (r != 0); + } + return ((IDEA_INT) b2); +}