whirlpool/whirlpool_internal.h

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00001 // Copyright 2006 Benedikt Böhm <hollow@gentoo.org>
00002 //
00003 // This program is free software; you can redistribute it and/or modify
00004 // it under the terms of the GNU General Public License as published by
00005 // the Free Software Foundation; either version 2 of the License, or
00006 // (at your option) any later version.
00007 //
00008 // This program is distributed in the hope that it will be useful,
00009 // but WITHOUT ANY WARRANTY; without even the implied warranty of
00010 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00011 // GNU General Public License for more details.
00012 //
00013 // You should have received a copy of the GNU General Public License
00014 // along with this program; if not, write to the
00015 // Free Software Foundation, Inc.,
00016 // 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
00017 
00018 #ifndef _LUCID_WHIRLPOOL_INTERNAL_H
00019 #define _LUCID_WHIRLPOOL_INTERNAL_H
00020 
00021 #define ONE8    0xffU
00022 #define ONE16   0xffffU
00023 
00024 #if UINT_MAX >= 4294967295UL
00025 #define ONE32   0xffffffffU
00026 #else
00027 #define ONE32   0xffffffffUL
00028 #endif
00029 
00030 #define ONE64   0xffffffffffffffffULL
00031 
00032 #define T8(x)   ((x) & ONE8)
00033 #define T16(x)  ((x) & ONE16)
00034 #define T32(x)  ((x) & ONE32)
00035 #define T64(x)  ((x) & ONE64)
00036 
00037 /*
00038  * U8TO32_BIG(c) returns the 32-bit value stored in big-endian convention
00039  * in the unsigned char array pointed to by c.
00040  */
00041 #define U8TO32_BIG(c)  (((u32)T8(*(c)) << 24) | ((u32)T8(*((c) + 1)) << 16) | ((u32)T8(*((c) + 2)) << 8) | ((u32)T8(*((c) + 3))))
00042 
00043 /*
00044  * U8TO32_LITTLE(c) returns the 32-bit value stored in little-endian convention
00045  * in the unsigned char array pointed to by c.
00046  */
00047 #define U8TO32_LITTLE(c)  (((u32)T8(*(c))) | ((u32)T8(*((c) + 1)) << 8) | (u32)T8(*((c) + 2)) << 16) | ((u32)T8(*((c) + 3)) << 24))
00048 
00049 /*
00050  * U8TO32_BIG(c, v) stores the 32-bit-value v in big-endian convention
00051  * into the unsigned char array pointed to by c.
00052  */
00053 #define U32TO8_BIG(c, v)    do { u32 x = (v); u8 *d = (c); d[0] = T8(x >> 24); d[1] = T8(x >> 16); d[2] = T8(x >> 8); d[3] = T8(x); } while (0)
00054 
00055 /*
00056  * U8TO32_LITTLE(c, v) stores the 32-bit-value v in little-endian convention
00057  * into the unsigned char array pointed to by c.
00058  */
00059 #define U32TO8_LITTLE(c, v)    do { u32 x = (v); u8 *d = (c); d[0] = T8(x); d[1] = T8(x >> 8); d[2] = T8(x >> 16); d[3] = T8(x >> 24); } while (0)
00060 
00061 /*
00062  * ROTL32(v, n) returns the value of the 32-bit unsigned value v after
00063  * a rotation of n bits to the left. It might be replaced by the appropriate
00064  * architecture-specific macro.
00065  *
00066  * It evaluates v and n twice.
00067  *
00068  * The compiler might emit a warning if n is the constant 0. The result
00069  * is undefined if n is greater than 31.
00070  */
00071 #define ROTL32(v, n) (T32((v) << (n)) |    ((v) >> (32 - (n))))
00072 #define ROTR64(v, n)    (((v) >> (n)) | T64((v) << (64 - (n))))
00073 
00074 /*
00075  * The number of rounds of the internal dedicated block cipher.
00076  */
00077 #define R 10
00078 
00079 #endif

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