cast_lcl.h
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- /* crypto/cast/cast_lcl.h */
- /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
- * All rights reserved.
- *
- * This package is an SSL implementation written
- * by Eric Young (eay@cryptsoft.com).
- * The implementation was written so as to conform with Netscapes SSL.
- *
- * This library is free for commercial and non-commercial use as long as
- * the following conditions are aheared to. The following conditions
- * apply to all code found in this distribution, be it the RC4, RSA,
- * lhash, DES, etc., code; not just the SSL code. The SSL documentation
- * included with this distribution is covered by the same copyright terms
- * except that the holder is Tim Hudson (tjh@cryptsoft.com).
- *
- * Copyright remains Eric Young's, and as such any Copyright notices in
- * the code are not to be removed.
- * If this package is used in a product, Eric Young should be given attribution
- * as the author of the parts of the library used.
- * This can be in the form of a textual message at program startup or
- * in documentation (online or textual) provided with the package.
- *
- * 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 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.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * "This product includes cryptographic software written by
- * Eric Young (eay@cryptsoft.com)"
- * The word 'cryptographic' can be left out if the rouines from the library
- * being used are not cryptographic related :-).
- * 4. If you include any Windows specific code (or a derivative thereof) from
- * the apps directory (application code) you must include an acknowledgement:
- * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
- *
- * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``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 THE AUTHOR OR CONTRIBUTORS 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.
- *
- * The licence and distribution terms for any publically available version or
- * derivative of this code cannot be changed. i.e. this code cannot simply be
- * copied and put under another distribution licence
- * [including the GNU Public Licence.]
- */
- #include "e_os.h"
- #ifdef OPENSSL_SYS_WIN32
- #include <stdlib.h>
- #endif
- #undef c2l
- #define c2l(c,l) (l =((unsigned long)(*((c)++))) ,
- l|=((unsigned long)(*((c)++)))<< 8L,
- l|=((unsigned long)(*((c)++)))<<16L,
- l|=((unsigned long)(*((c)++)))<<24L)
- /* NOTE - c is not incremented as per c2l */
- #undef c2ln
- #define c2ln(c,l1,l2,n) {
- c+=n;
- l1=l2=0;
- switch (n) {
- case 8: l2 =((unsigned long)(*(--(c))))<<24L;
- case 7: l2|=((unsigned long)(*(--(c))))<<16L;
- case 6: l2|=((unsigned long)(*(--(c))))<< 8L;
- case 5: l2|=((unsigned long)(*(--(c))));
- case 4: l1 =((unsigned long)(*(--(c))))<<24L;
- case 3: l1|=((unsigned long)(*(--(c))))<<16L;
- case 2: l1|=((unsigned long)(*(--(c))))<< 8L;
- case 1: l1|=((unsigned long)(*(--(c))));
- }
- }
- #undef l2c
- #define l2c(l,c) (*((c)++)=(unsigned char)(((l) )&0xff),
- *((c)++)=(unsigned char)(((l)>> 8L)&0xff),
- *((c)++)=(unsigned char)(((l)>>16L)&0xff),
- *((c)++)=(unsigned char)(((l)>>24L)&0xff))
- /* NOTE - c is not incremented as per l2c */
- #undef l2cn
- #define l2cn(l1,l2,c,n) {
- c+=n;
- switch (n) {
- case 8: *(--(c))=(unsigned char)(((l2)>>24L)&0xff);
- case 7: *(--(c))=(unsigned char)(((l2)>>16L)&0xff);
- case 6: *(--(c))=(unsigned char)(((l2)>> 8L)&0xff);
- case 5: *(--(c))=(unsigned char)(((l2) )&0xff);
- case 4: *(--(c))=(unsigned char)(((l1)>>24L)&0xff);
- case 3: *(--(c))=(unsigned char)(((l1)>>16L)&0xff);
- case 2: *(--(c))=(unsigned char)(((l1)>> 8L)&0xff);
- case 1: *(--(c))=(unsigned char)(((l1) )&0xff);
- }
- }
- /* NOTE - c is not incremented as per n2l */
- #define n2ln(c,l1,l2,n) {
- c+=n;
- l1=l2=0;
- switch (n) {
- case 8: l2 =((unsigned long)(*(--(c)))) ;
- case 7: l2|=((unsigned long)(*(--(c))))<< 8;
- case 6: l2|=((unsigned long)(*(--(c))))<<16;
- case 5: l2|=((unsigned long)(*(--(c))))<<24;
- case 4: l1 =((unsigned long)(*(--(c)))) ;
- case 3: l1|=((unsigned long)(*(--(c))))<< 8;
- case 2: l1|=((unsigned long)(*(--(c))))<<16;
- case 1: l1|=((unsigned long)(*(--(c))))<<24;
- }
- }
- /* NOTE - c is not incremented as per l2n */
- #define l2nn(l1,l2,c,n) {
- c+=n;
- switch (n) {
- case 8: *(--(c))=(unsigned char)(((l2) )&0xff);
- case 7: *(--(c))=(unsigned char)(((l2)>> 8)&0xff);
- case 6: *(--(c))=(unsigned char)(((l2)>>16)&0xff);
- case 5: *(--(c))=(unsigned char)(((l2)>>24)&0xff);
- case 4: *(--(c))=(unsigned char)(((l1) )&0xff);
- case 3: *(--(c))=(unsigned char)(((l1)>> 8)&0xff);
- case 2: *(--(c))=(unsigned char)(((l1)>>16)&0xff);
- case 1: *(--(c))=(unsigned char)(((l1)>>24)&0xff);
- }
- }
- #undef n2l
- #define n2l(c,l) (l =((unsigned long)(*((c)++)))<<24L,
- l|=((unsigned long)(*((c)++)))<<16L,
- l|=((unsigned long)(*((c)++)))<< 8L,
- l|=((unsigned long)(*((c)++))))
- #undef l2n
- #define l2n(l,c) (*((c)++)=(unsigned char)(((l)>>24L)&0xff),
- *((c)++)=(unsigned char)(((l)>>16L)&0xff),
- *((c)++)=(unsigned char)(((l)>> 8L)&0xff),
- *((c)++)=(unsigned char)(((l) )&0xff))
- #if defined(OPENSSL_SYS_WIN32) && defined(_MSC_VER)
- #define ROTL(a,n) (_lrotl(a,n))
- #else
- #define ROTL(a,n) ((((a)<<(n))&0xffffffffL)|((a)>>(32-(n))))
- #endif
- #define C_M 0x3fc
- #define C_0 22L
- #define C_1 14L
- #define C_2 6L
- #define C_3 2L /* left shift */
- /* The rotate has an extra 16 added to it to help the x86 asm */
- #if defined(CAST_PTR)
- #define E_CAST(n,key,L,R,OP1,OP2,OP3)
- {
- int i;
- t=(key[n*2] OP1 R)&0xffffffffL;
- i=key[n*2+1];
- t=ROTL(t,i);
- L^= (((((*(CAST_LONG *)((unsigned char *)
- CAST_S_table0+((t>>C_2)&C_M)) OP2
- *(CAST_LONG *)((unsigned char *)
- CAST_S_table1+((t<<C_3)&C_M)))&0xffffffffL) OP3
- *(CAST_LONG *)((unsigned char *)
- CAST_S_table2+((t>>C_0)&C_M)))&0xffffffffL) OP1
- *(CAST_LONG *)((unsigned char *)
- CAST_S_table3+((t>>C_1)&C_M)))&0xffffffffL;
- }
- #elif defined(CAST_PTR2)
- #define E_CAST(n,key,L,R,OP1,OP2,OP3)
- {
- int i;
- CAST_LONG u,v,w;
- w=(key[n*2] OP1 R)&0xffffffffL;
- i=key[n*2+1];
- w=ROTL(w,i);
- u=w>>C_2;
- v=w<<C_3;
- u&=C_M;
- v&=C_M;
- t= *(CAST_LONG *)((unsigned char *)CAST_S_table0+u);
- u=w>>C_0;
- t=(t OP2 *(CAST_LONG *)((unsigned char *)CAST_S_table1+v))&0xffffffffL;
- v=w>>C_1;
- u&=C_M;
- v&=C_M;
- t=(t OP3 *(CAST_LONG *)((unsigned char *)CAST_S_table2+u)&0xffffffffL);
- t=(t OP1 *(CAST_LONG *)((unsigned char *)CAST_S_table3+v)&0xffffffffL);
- L^=(t&0xffffffff);
- }
- #else
- #define E_CAST(n,key,L,R,OP1,OP2,OP3)
- {
- CAST_LONG a,b,c,d;
- t=(key[n*2] OP1 R)&0xffffffff;
- t=ROTL(t,(key[n*2+1]));
- a=CAST_S_table0[(t>> 8)&0xff];
- b=CAST_S_table1[(t )&0xff];
- c=CAST_S_table2[(t>>24)&0xff];
- d=CAST_S_table3[(t>>16)&0xff];
- L^=(((((a OP2 b)&0xffffffffL) OP3 c)&0xffffffffL) OP1 d)&0xffffffffL;
- }
- #endif
- extern const CAST_LONG CAST_S_table0[256];
- extern const CAST_LONG CAST_S_table1[256];
- extern const CAST_LONG CAST_S_table2[256];
- extern const CAST_LONG CAST_S_table3[256];
- extern const CAST_LONG CAST_S_table4[256];
- extern const CAST_LONG CAST_S_table5[256];
- extern const CAST_LONG CAST_S_table6[256];
- extern const CAST_LONG CAST_S_table7[256];