bsd/crypto/cast128/cast128_subkey.h

   1 /*
   2  * heavily modified by Tomomi Suzuki <suzuki@grelot.elec.ryukoku.ac.jp>
   3  */
   4 /*
   5  * The CAST-128 Encryption Algorithm (RFC 2144)
   6  *
   7  * original implementation <Hideo "Sir MaNMOS" Morisita>
   8  * 1997/08/21
   9  */
  10 /*
  11  * Copyright (C) 1997 Hideo "Sir MANMOS" Morishita
  12  * All rights reserved.
  13  *
  14  * Redistribution and use in source and binary forms, with or without
  15  * modification, are permitted provided that the following conditions
  16  * are met:
  17  * 1. Redistributions of source code must retain the above copyright
  18  *    notice, this list of conditions and the following disclaimer.
  19  * 2. Redistributions in binary form must reproduce the above copyright
  20  *    notice, this list of conditions and the following disclaimer in the
  21  *    documentation and/or other materials provided with the distribution.
  22  *
  23  * THIS SOFTWARE IS PROVIDED BY Hideo "Sir MaNMOS" Morishita ``AS IS'' AND
  24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  26  * ARE DISCLAIMED.  IN NO EVENT SHALL Hideo "Sir MaNMOS" Morishita BE LIABLE
  27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  33  * SUCH DAMAGE.
  34  */
  35
  36 #ifndef RFC2144_CAST_128_SUBKEY_H
  37 #define RFC2144_CAST_128_SUBKEY_H
  38
  39 #define x0x1x2x3 buf[0]
  40 #define x4x5x6x7 buf[1]
  41 #define x8x9xAxB buf[2]
  42 #define xCxDxExF buf[3]
  43 #define z0z1z2z3 buf[4]
  44 #define z4z5z6z7 buf[5]
  45 #define z8z9zAzB buf[6]
  46 #define zCzDzEzF buf[7]
  47
  48 #define byte0(x) (((x) >> 24))
  49 #define byte1(x) (((x) >> 16) & 0xff)
  50 #define byte2(x) (((x) >> 8) & 0xff)
  51 #define byte3(x) (((x)) & 0xff)
  52
  53 #define x0 byte0(buf[0])
  54 #define x1 byte1(buf[0])
  55 #define x2 byte2(buf[0])
  56 #define x3 byte3(buf[0])
  57 #define x4 byte0(buf[1])
  58 #define x5 byte1(buf[1])
  59 #define x6 byte2(buf[1])
  60 #define x7 byte3(buf[1])
  61 #define x8 byte0(buf[2])
  62 #define x9 byte1(buf[2])
  63 #define xA byte2(buf[2])
  64 #define xB byte3(buf[2])
  65 #define xC byte0(buf[3])
  66 #define xD byte1(buf[3])
  67 #define xE byte2(buf[3])
  68 #define xF byte3(buf[3])
  69 #define z0 byte0(buf[4])
  70 #define z1 byte1(buf[4])
  71 #define z2 byte2(buf[4])
  72 #define z3 byte3(buf[4])
  73 #define z4 byte0(buf[5])
  74 #define z5 byte1(buf[5])
  75 #define z6 byte2(buf[5])
  76 #define z7 byte3(buf[5])
  77 #define z8 byte0(buf[6])
  78 #define z9 byte1(buf[6])
  79 #define zA byte2(buf[6])
  80 #define zB byte3(buf[6])
  81 #define zC byte0(buf[7])
  82 #define zD byte1(buf[7])
  83 #define zE byte2(buf[7])
  84 #define zF byte3(buf[7])
  85
  86 #define circular_leftshift(x, y) ( ((x) << (y)) | ((x) >> (32-(y))) )
  87
  88 #endif
  89