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- /*
- * heavily modified by Tomomi Suzuki <suzuki@grelot.elec.ryukoku.ac.jp>
- */
- /*
- * The CAST-128 Encryption Algorithm (RFC 2144)
- *
- * original implementation <Hideo "Sir MaNMOS" Morisita>
- * 1997/08/21
- */
- /*
- * Copyright (C) 1997 Hideo "Sir MANMOS" Morishita
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY Hideo "Sir MaNMOS" Morishita ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL Hideo "Sir MaNMOS" Morishita BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
- #ifndef RFC2144_CAST_128_SUBKEY_H
- #define RFC2144_CAST_128_SUBKEY_H
-
- #define x0x1x2x3 buf[0]
- #define x4x5x6x7 buf[1]
- #define x8x9xAxB buf[2]
- #define xCxDxExF buf[3]
- #define z0z1z2z3 buf[4]
- #define z4z5z6z7 buf[5]
- #define z8z9zAzB buf[6]
- #define zCzDzEzF buf[7]
-
- #define byte0(x) (((x) >> 24))
- #define byte1(x) (((x) >> 16) & 0xff)
- #define byte2(x) (((x) >> 8) & 0xff)
- #define byte3(x) (((x)) & 0xff)
-
- #define x0 byte0(buf[0])
- #define x1 byte1(buf[0])
- #define x2 byte2(buf[0])
- #define x3 byte3(buf[0])
- #define x4 byte0(buf[1])
- #define x5 byte1(buf[1])
- #define x6 byte2(buf[1])
- #define x7 byte3(buf[1])
- #define x8 byte0(buf[2])
- #define x9 byte1(buf[2])
- #define xA byte2(buf[2])
- #define xB byte3(buf[2])
- #define xC byte0(buf[3])
- #define xD byte1(buf[3])
- #define xE byte2(buf[3])
- #define xF byte3(buf[3])
- #define z0 byte0(buf[4])
- #define z1 byte1(buf[4])
- #define z2 byte2(buf[4])
- #define z3 byte3(buf[4])
- #define z4 byte0(buf[5])
- #define z5 byte1(buf[5])
- #define z6 byte2(buf[5])
- #define z7 byte3(buf[5])
- #define z8 byte0(buf[6])
- #define z9 byte1(buf[6])
- #define zA byte2(buf[6])
- #define zB byte3(buf[6])
- #define zC byte0(buf[7])
- #define zD byte1(buf[7])
- #define zE byte2(buf[7])
- #define zF byte3(buf[7])
-
- #define circular_leftshift(x, y) ( ((x) << (y)) | ((x) >> (32-(y))) )
-
- #endif
-
-