X-Git-Url: https://www.tinc-vpn.org/git/browse?p=tinc;a=blobdiff_plain;f=cipher%2Fidea%2Fi_skey.c;fp=cipher%2Fidea%2Fi_skey.c;h=0000000000000000000000000000000000000000;hp=fcbdb691e23d4f32e9540be499ab2b6074da1b53;hb=74315f4218ba50cc5ba32b6ecc8e8afa2b5cd704;hpb=16d581be68bb52c08569e34e8a6b87f66b87e8ee diff --git a/cipher/idea/i_skey.c b/cipher/idea/i_skey.c deleted file mode 100644 index fcbdb691..00000000 --- a/cipher/idea/i_skey.c +++ /dev/null @@ -1,166 +0,0 @@ -/* crypto/idea/i_skey.c */ -/* Copyright (C) 1995-1997 Eric Young (eay@cryptsoft.com) - * 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.] - */ - -#include "idea.h" -#include "idea_lcl.h" - -#ifndef NOPROTO -static IDEA_INT inverse(unsigned int xin); -#else -static IDEA_INT inverse(); -#endif - -void idea_set_encrypt_key(key, ks) -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]); - - 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(ek, dk) -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]); - t=tp[1]; - tp[1]=tp[2]; - tp[2]=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(xin) -unsigned int xin; - { - long n1,n2,q,r,b1,b2,t; - - 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); - }