/* * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved. * * 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 */ #ifndef HEADER_BF_LOCL_H # define HEADER_BF_LOCL_H # include <openssl/opensslconf.h> /* NOTE - c is not incremented as per n2l */ # define n2ln(c,l1,l2,n) { \ c+=n; \ l1=l2=0; \ switch (n) { \ case 8: l2 =((unsigned long)(*(--(c)))) ; \ /* fall thru */ \ case 7: l2|=((unsigned long)(*(--(c))))<< 8; \ /* fall thru */ \ case 6: l2|=((unsigned long)(*(--(c))))<<16; \ /* fall thru */ \ case 5: l2|=((unsigned long)(*(--(c))))<<24; \ /* fall thru */ \ case 4: l1 =((unsigned long)(*(--(c)))) ; \ /* fall thru */ \ case 3: l1|=((unsigned long)(*(--(c))))<< 8; \ /* fall thru */ \ case 2: l1|=((unsigned long)(*(--(c))))<<16; \ /* fall thru */ \ case 1: l1|=((unsigned long)(*(--(c))))<<24; \ } \ } /* NOTE - c is not incremented as per l2n */ # define l2nn(l1,l2,c,n) { \ c+=n; \ switch (n) { \ case 8: *(--(c))=(unsigned char)(((l2) )&0xff); \ /* fall thru */ \ case 7: *(--(c))=(unsigned char)(((l2)>> 8)&0xff); \ /* fall thru */ \ case 6: *(--(c))=(unsigned char)(((l2)>>16)&0xff); \ /* fall thru */ \ case 5: *(--(c))=(unsigned char)(((l2)>>24)&0xff); \ /* fall thru */ \ case 4: *(--(c))=(unsigned char)(((l1) )&0xff); \ /* fall thru */ \ case 3: *(--(c))=(unsigned char)(((l1)>> 8)&0xff); \ /* fall thru */ \ case 2: *(--(c))=(unsigned char)(((l1)>>16)&0xff); \ /* fall thru */ \ case 1: *(--(c))=(unsigned char)(((l1)>>24)&0xff); \ } \ } # undef n2l # define n2l(c,l) (l =((unsigned long)(*((c)++)))<<24L, \ l|=((unsigned long)(*((c)++)))<<16L, \ l|=((unsigned long)(*((c)++)))<< 8L, \ l|=((unsigned long)(*((c)++)))) # undef l2n # define l2n(l,c) (*((c)++)=(unsigned char)(((l)>>24L)&0xff), \ *((c)++)=(unsigned char)(((l)>>16L)&0xff), \ *((c)++)=(unsigned char)(((l)>> 8L)&0xff), \ *((c)++)=(unsigned char)(((l) )&0xff)) /* * This is actually a big endian algorithm, the most significant byte is used * to lookup array 0 */ # define BF_ENC(LL,R,S,P) ( \ LL^=P, \ LL^=((( S[ ((R>>24)&0xff)] + \ S[0x0100+((R>>16)&0xff)])^ \ S[0x0200+((R>> 8)&0xff)])+ \ S[0x0300+((R )&0xff)])&0xffffffffU \ ) #endif