Eneboo - Documentación para desarrolladores
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00001 /* 00002 * Copyright (c) 2007 KISA(Korea Information Security Agency). All rights reserved. 00003 * 00004 * Redistribution and use in source and binary forms, with or without 00005 * modification, are permitted provided that the following conditions 00006 * are met: 00007 * 1. Redistributions of source code must retain the above copyright 00008 * notice, this list of conditions and the following disclaimer. 00009 * 2. Neither the name of author nor the names of its contributors may 00010 * be used to endorse or promote products derived from this software 00011 * without specific prior written permission. 00012 * 00013 * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND 00014 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 00015 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 00016 * ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE 00017 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 00018 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 00019 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 00020 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 00021 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 00022 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 00023 * SUCH DAMAGE. 00024 * 00025 */ 00026 #ifndef HEADER_SEED_LOCL_H 00027 #define HEADER_SEED_LOCL_H 00028 00029 #include "openssl/e_os2.h" 00030 #include <openssl/seed.h> 00031 00032 00033 #ifdef SEED_LONG /* need 32-bit type */ 00034 typedef unsigned long seed_word; 00035 #else 00036 typedef unsigned int seed_word; 00037 #endif 00038 00039 00040 #ifdef __cplusplus 00041 extern "C" { 00042 #endif 00043 00044 #define G_FUNC(v) \ 00045 SS[0][(unsigned char) (v) & 0xff] ^ SS[1][(unsigned char) ((v)>>8) & 0xff] ^ \ 00046 SS[2][(unsigned char)((v)>>16) & 0xff] ^ SS[3][(unsigned char)((v)>>24) & 0xff] 00047 00048 #define char2word(c, i) \ 00049 (i) = ((((seed_word)(c)[0]) << 24) | (((seed_word)(c)[1]) << 16) | (((seed_word)(c)[2]) << 8) | ((seed_word)(c)[3])) 00050 00051 #define word2char(l, c) \ 00052 *((c)+0) = (unsigned char)((l)>>24) & 0xff; \ 00053 *((c)+1) = (unsigned char)((l)>>16) & 0xff; \ 00054 *((c)+2) = (unsigned char)((l)>> 8) & 0xff; \ 00055 *((c)+3) = (unsigned char)((l)) & 0xff 00056 00057 #define KEYSCHEDULE_UPDATE0(T0, T1, X1, X2, X3, X4, KC) \ 00058 (T0) = (X3); \ 00059 (X3) = (((X3)<<8) ^ ((X4)>>24)) & 0xffffffff; \ 00060 (X4) = (((X4)<<8) ^ ((T0)>>24)) & 0xffffffff; \ 00061 (T0) = ((X1) + (X3) - (KC)) & 0xffffffff; \ 00062 (T1) = ((X2) + (KC) - (X4)) & 0xffffffff 00063 00064 #define KEYSCHEDULE_UPDATE1(T0, T1, X1, X2, X3, X4, KC) \ 00065 (T0) = (X1); \ 00066 (X1) = (((X1)>>8) ^ ((X2)<<24)) & 0xffffffff; \ 00067 (X2) = (((X2)>>8) ^ ((T0)<<24)) & 0xffffffff; \ 00068 (T0) = ((X1) + (X3) - (KC)) & 0xffffffff; \ 00069 (T1) = ((X2) + (KC) - (X4)) & 0xffffffff 00070 00071 #define KEYUPDATE_TEMP(T0, T1, K) \ 00072 (K)[0] = G_FUNC((T0)); \ 00073 (K)[1] = G_FUNC((T1)) 00074 00075 #define XOR_SEEDBLOCK(DST, SRC) \ 00076 ((DST))[0] ^= ((SRC))[0]; \ 00077 ((DST))[1] ^= ((SRC))[1]; \ 00078 ((DST))[2] ^= ((SRC))[2]; \ 00079 ((DST))[3] ^= ((SRC))[3] 00080 00081 #define MOV_SEEDBLOCK(DST, SRC) \ 00082 ((DST))[0] = ((SRC))[0]; \ 00083 ((DST))[1] = ((SRC))[1]; \ 00084 ((DST))[2] = ((SRC))[2]; \ 00085 ((DST))[3] = ((SRC))[3] 00086 00087 # define CHAR2WORD(C, I) \ 00088 char2word((C), (I)[0]); \ 00089 char2word((C+4), (I)[1]); \ 00090 char2word((C+8), (I)[2]); \ 00091 char2word((C+12), (I)[3]) 00092 00093 # define WORD2CHAR(I, C) \ 00094 word2char((I)[0], (C)); \ 00095 word2char((I)[1], (C+4)); \ 00096 word2char((I)[2], (C+8)); \ 00097 word2char((I)[3], (C+12)) 00098 00099 # define E_SEED(T0, T1, X1, X2, X3, X4, rbase) \ 00100 (T0) = (X3) ^ (ks->data)[(rbase)]; \ 00101 (T1) = (X4) ^ (ks->data)[(rbase)+1]; \ 00102 (T1) ^= (T0); \ 00103 (T1) = G_FUNC((T1)); \ 00104 (T0) = ((T0) + (T1)) & 0xffffffff; \ 00105 (T0) = G_FUNC((T0)); \ 00106 (T1) = ((T1) + (T0)) & 0xffffffff; \ 00107 (T1) = G_FUNC((T1)); \ 00108 (T0) = ((T0) + (T1)) & 0xffffffff; \ 00109 (X1) ^= (T0); \ 00110 (X2) ^= (T1) 00111 00112 #ifdef __cplusplus 00113 } 00114 #endif 00115 00116 #endif /* HEADER_SEED_LOCL_H */