116 lines
4.3 KiB
C
116 lines
4.3 KiB
C
/*
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* Copyright (c) 2007 KISA(Korea Information Security Agency). All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Neither the name of author nor the names of its contributors may
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* be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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*/
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#ifndef HEADER_SEED_LOCL_H
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#define HEADER_SEED_LOCL_H
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#include "openssl/e_os2.h"
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#include <openssl/seed.h>
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#ifdef SEED_LONG /* need 32-bit type */
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typedef unsigned long seed_word;
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#else
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typedef unsigned int seed_word;
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#endif
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define G_FUNC(v) \
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SS[0][(unsigned char) (v) & 0xff] ^ SS[1][(unsigned char) ((v)>>8) & 0xff] ^ \
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SS[2][(unsigned char)((v)>>16) & 0xff] ^ SS[3][(unsigned char)((v)>>24) & 0xff]
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#define char2word(c, i) \
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(i) = ((((seed_word)(c)[0]) << 24) | (((seed_word)(c)[1]) << 16) | (((seed_word)(c)[2]) << 8) | ((seed_word)(c)[3]))
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#define word2char(l, c) \
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*((c)+0) = (unsigned char)((l)>>24) & 0xff; \
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*((c)+1) = (unsigned char)((l)>>16) & 0xff; \
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*((c)+2) = (unsigned char)((l)>> 8) & 0xff; \
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*((c)+3) = (unsigned char)((l)) & 0xff
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#define KEYSCHEDULE_UPDATE0(T0, T1, X1, X2, X3, X4, KC) \
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(T0) = (X3); \
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(X3) = (((X3)<<8) ^ ((X4)>>24)) & 0xffffffff; \
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(X4) = (((X4)<<8) ^ ((T0)>>24)) & 0xffffffff; \
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(T0) = ((X1) + (X3) - (KC)) & 0xffffffff; \
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(T1) = ((X2) + (KC) - (X4)) & 0xffffffff
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#define KEYSCHEDULE_UPDATE1(T0, T1, X1, X2, X3, X4, KC) \
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(T0) = (X1); \
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(X1) = (((X1)>>8) ^ ((X2)<<24)) & 0xffffffff; \
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(X2) = (((X2)>>8) ^ ((T0)<<24)) & 0xffffffff; \
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(T0) = ((X1) + (X3) - (KC)) & 0xffffffff; \
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(T1) = ((X2) + (KC) - (X4)) & 0xffffffff
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#define KEYUPDATE_TEMP(T0, T1, K) \
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(K)[0] = G_FUNC((T0)); \
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(K)[1] = G_FUNC((T1))
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#define XOR_SEEDBLOCK(DST, SRC) \
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((DST))[0] ^= ((SRC))[0]; \
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((DST))[1] ^= ((SRC))[1]; \
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((DST))[2] ^= ((SRC))[2]; \
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((DST))[3] ^= ((SRC))[3]
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#define MOV_SEEDBLOCK(DST, SRC) \
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((DST))[0] = ((SRC))[0]; \
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((DST))[1] = ((SRC))[1]; \
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((DST))[2] = ((SRC))[2]; \
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((DST))[3] = ((SRC))[3]
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# define CHAR2WORD(C, I) \
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char2word((C), (I)[0]); \
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char2word((C+4), (I)[1]); \
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char2word((C+8), (I)[2]); \
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char2word((C+12), (I)[3])
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# define WORD2CHAR(I, C) \
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word2char((I)[0], (C)); \
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word2char((I)[1], (C+4)); \
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word2char((I)[2], (C+8)); \
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word2char((I)[3], (C+12))
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# define E_SEED(T0, T1, X1, X2, X3, X4, rbase) \
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(T0) = (X3) ^ (ks->data)[(rbase)]; \
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(T1) = (X4) ^ (ks->data)[(rbase)+1]; \
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(T1) ^= (T0); \
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(T1) = G_FUNC((T1)); \
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(T0) = ((T0) + (T1)) & 0xffffffff; \
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(T0) = G_FUNC((T0)); \
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(T1) = ((T1) + (T0)) & 0xffffffff; \
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(T1) = G_FUNC((T1)); \
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(T0) = ((T0) + (T1)) & 0xffffffff; \
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(X1) ^= (T0); \
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(X2) ^= (T1)
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#ifdef __cplusplus
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}
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#endif
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#endif /* HEADER_SEED_LOCL_H */
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