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+/* crypto/des/des_locl.h */
+/* Copyright (C) 1995-1997 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.]
+ */
+
+#ifndef HEADER_DES_LOCL_H
+#define HEADER_DES_LOCL_H
+
+#if defined(OPENSSL_SYS_WIN32)
+#ifndef OPENSSL_SYS_MSDOS
+#define OPENSSL_SYS_MSDOS
+#endif
+#endif
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#ifndef OPENSSL_SYS_MSDOS
+#if !defined(OPENSSL_SYS_VMS) || defined(__DECC)
+#ifdef OPENSSL_UNISTD
+# include OPENSSL_UNISTD
+#else
+# include <unistd.h>
+#endif
+#include <math.h>
+#endif
+#endif
+
+#include <net-snmp/library/openssl_des.h>
+
+#ifdef OPENSSL_SYS_MSDOS /* Visual C++ 2.1 (Windows NT/95) */
+#include <stdlib.h>
+#include <errno.h>
+#include <time.h>
+#include <io.h>
+#endif
+
+#if defined(__STDC__) || defined(OPENSSL_SYS_VMS) || defined(M_XENIX) || defined(OPENSSL_SYS_MSDOS)
+#include <string.h>
+#endif
+
+#ifdef OPENSSL_BUILD_SHLIBCRYPTO
+# undef OPENSSL_EXTERN
+# define OPENSSL_EXTERN OPENSSL_EXPORT
+#endif
+
+#define ITERATIONS 16
+#define HALF_ITERATIONS 8
+
+/* used in des_read and des_write */
+#define MAXWRITE (1024*16)
+#define BSIZE (MAXWRITE+4)
+
+#define c2l(c,l) (l =((DES_LONG)(*((c)++))) , \
+ l|=((DES_LONG)(*((c)++)))<< 8L, \
+ l|=((DES_LONG)(*((c)++)))<<16L, \
+ l|=((DES_LONG)(*((c)++)))<<24L)
+
+/* NOTE - c is not incremented as per c2l */
+#define c2ln(c,l1,l2,n) { \
+ c+=n; \
+ l1=l2=0; \
+ switch (n) { \
+ case 8: l2 =((DES_LONG)(*(--(c))))<<24L; \
+ case 7: l2|=((DES_LONG)(*(--(c))))<<16L; \
+ case 6: l2|=((DES_LONG)(*(--(c))))<< 8L; \
+ case 5: l2|=((DES_LONG)(*(--(c)))); \
+ case 4: l1 =((DES_LONG)(*(--(c))))<<24L; \
+ case 3: l1|=((DES_LONG)(*(--(c))))<<16L; \
+ case 2: l1|=((DES_LONG)(*(--(c))))<< 8L; \
+ case 1: l1|=((DES_LONG)(*(--(c)))); \
+ } \
+ }
+
+#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))
+
+/* replacements for htonl and ntohl since I have no idea what to do
+ * when faced with machines with 8 byte longs. */
+#define HDRSIZE 4
+
+#define n2l(c,l) (l =((DES_LONG)(*((c)++)))<<24L, \
+ l|=((DES_LONG)(*((c)++)))<<16L, \
+ l|=((DES_LONG)(*((c)++)))<< 8L, \
+ l|=((DES_LONG)(*((c)++))))
+
+#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))
+
+/* NOTE - c is not incremented as per l2c */
+#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); \
+ } \
+ }
+
+#if (defined(OPENSSL_SYS_WIN32) && defined(_MSC_VER)) || defined(__ICC)
+#define ROTATE(a,n) (_lrotr(a,n))
+#elif defined(__GNUC__) && __GNUC__>=2 && !defined(__STRICT_ANSI__) && !defined(OPENSSL_NO_ASM) && !defined(OPENSSL_NO_INLINE_ASM) && !defined(PEDANTIC)
+# if defined(__i386) || defined(__i386__) || defined(__x86_64) || defined(__x86_64__)
+# define ROTATE(a,n) ({ register unsigned int ret; \
+ asm ("rorl %1,%0" \
+ : "=r"(ret) \
+ : "I"(n),"0"(a) \
+ : "cc"); \
+ ret; \
+ })
+# endif
+#endif
+#ifndef ROTATE
+#define ROTATE(a,n) (((a)>>(n))+((a)<<(32-(n))))
+#endif
+
+/* Don't worry about the LOAD_DATA() stuff, that is used by
+ * fcrypt() to add it's little bit to the front */
+
+#ifdef DES_FCRYPT
+
+#define LOAD_DATA_tmp(R,S,u,t,E0,E1) \
+ { DES_LONG tmp; LOAD_DATA(R,S,u,t,E0,E1,tmp); }
+
+#define LOAD_DATA(R,S,u,t,E0,E1,tmp) \
+ t=R^(R>>16L); \
+ u=t&E0; t&=E1; \
+ tmp=(u<<16); u^=R^s[S ]; u^=tmp; \
+ tmp=(t<<16); t^=R^s[S+1]; t^=tmp
+#else
+#define LOAD_DATA_tmp(a,b,c,d,e,f) LOAD_DATA(a,b,c,d,e,f,g)
+#define LOAD_DATA(R,S,u,t,E0,E1,tmp) \
+ u=R^s[S ]; \
+ t=R^s[S+1]
+#endif
+
+/* The changes to this macro may help or hinder, depending on the
+ * compiler and the architecture. gcc2 always seems to do well :-).
+ * Inspired by Dana How <how@isl.stanford.edu>
+ * DO NOT use the alternative version on machines with 8 byte longs.
+ * It does not seem to work on the Alpha, even when DES_LONG is 4
+ * bytes, probably an issue of accessing non-word aligned objects :-( */
+#ifdef DES_PTR
+
+/* It recently occurred to me that 0^0^0^0^0^0^0 == 0, so there
+ * is no reason to not xor all the sub items together. This potentially
+ * saves a register since things can be xored directly into L */
+
+#if defined(DES_RISC1) || defined(DES_RISC2)
+#ifdef DES_RISC1
+#define D_ENCRYPT(LL,R,S) { \
+ unsigned int u1,u2,u3; \
+ LOAD_DATA(R,S,u,t,E0,E1,u1); \
+ u2=(int)u>>8L; \
+ u1=(int)u&0xfc; \
+ u2&=0xfc; \
+ t=ROTATE(t,4); \
+ u>>=16L; \
+ LL^= *(const DES_LONG *)(des_SP +u1); \
+ LL^= *(const DES_LONG *)(des_SP+0x200+u2); \
+ u3=(int)(u>>8L); \
+ u1=(int)u&0xfc; \
+ u3&=0xfc; \
+ LL^= *(const DES_LONG *)(des_SP+0x400+u1); \
+ LL^= *(const DES_LONG *)(des_SP+0x600+u3); \
+ u2=(int)t>>8L; \
+ u1=(int)t&0xfc; \
+ u2&=0xfc; \
+ t>>=16L; \
+ LL^= *(const DES_LONG *)(des_SP+0x100+u1); \
+ LL^= *(const DES_LONG *)(des_SP+0x300+u2); \
+ u3=(int)t>>8L; \
+ u1=(int)t&0xfc; \
+ u3&=0xfc; \
+ LL^= *(const DES_LONG *)(des_SP+0x500+u1); \
+ LL^= *(const DES_LONG *)(des_SP+0x700+u3); }
+#endif
+#ifdef DES_RISC2
+#define D_ENCRYPT(LL,R,S) { \
+ unsigned int u1,u2,s1,s2; \
+ LOAD_DATA(R,S,u,t,E0,E1,u1); \
+ u2=(int)u>>8L; \
+ u1=(int)u&0xfc; \
+ u2&=0xfc; \
+ t=ROTATE(t,4); \
+ LL^= *(const DES_LONG *)(des_SP +u1); \
+ LL^= *(const DES_LONG *)(des_SP+0x200+u2); \
+ s1=(int)(u>>16L); \
+ s2=(int)(u>>24L); \
+ s1&=0xfc; \
+ s2&=0xfc; \
+ LL^= *(const DES_LONG *)(des_SP+0x400+s1); \
+ LL^= *(const DES_LONG *)(des_SP+0x600+s2); \
+ u2=(int)t>>8L; \
+ u1=(int)t&0xfc; \
+ u2&=0xfc; \
+ LL^= *(const DES_LONG *)(des_SP+0x100+u1); \
+ LL^= *(const DES_LONG *)(des_SP+0x300+u2); \
+ s1=(int)(t>>16L); \
+ s2=(int)(t>>24L); \
+ s1&=0xfc; \
+ s2&=0xfc; \
+ LL^= *(const DES_LONG *)(des_SP+0x500+s1); \
+ LL^= *(const DES_LONG *)(des_SP+0x700+s2); }
+#endif
+#else
+#define D_ENCRYPT(LL,R,S) { \
+ LOAD_DATA_tmp(R,S,u,t,E0,E1); \
+ t=ROTATE(t,4); \
+ LL^= \
+ *(const DES_LONG *)(des_SP +((u )&0xfc))^ \
+ *(const DES_LONG *)(des_SP+0x200+((u>> 8L)&0xfc))^ \
+ *(const DES_LONG *)(des_SP+0x400+((u>>16L)&0xfc))^ \
+ *(const DES_LONG *)(des_SP+0x600+((u>>24L)&0xfc))^ \
+ *(const DES_LONG *)(des_SP+0x100+((t )&0xfc))^ \
+ *(const DES_LONG *)(des_SP+0x300+((t>> 8L)&0xfc))^ \
+ *(const DES_LONG *)(des_SP+0x500+((t>>16L)&0xfc))^ \
+ *(const DES_LONG *)(des_SP+0x700+((t>>24L)&0xfc)); }
+#endif
+
+#else /* original version */
+
+#if defined(DES_RISC1) || defined(DES_RISC2)
+#ifdef DES_RISC1
+#define D_ENCRYPT(LL,R,S) {\
+ unsigned int u1,u2,u3; \
+ LOAD_DATA(R,S,u,t,E0,E1,u1); \
+ u>>=2L; \
+ t=ROTATE(t,6); \
+ u2=(int)u>>8L; \
+ u1=(int)u&0x3f; \
+ u2&=0x3f; \
+ u>>=16L; \
+ LL^=DES_SPtrans[0][u1]; \
+ LL^=DES_SPtrans[2][u2]; \
+ u3=(int)u>>8L; \
+ u1=(int)u&0x3f; \
+ u3&=0x3f; \
+ LL^=DES_SPtrans[4][u1]; \
+ LL^=DES_SPtrans[6][u3]; \
+ u2=(int)t>>8L; \
+ u1=(int)t&0x3f; \
+ u2&=0x3f; \
+ t>>=16L; \
+ LL^=DES_SPtrans[1][u1]; \
+ LL^=DES_SPtrans[3][u2]; \
+ u3=(int)t>>8L; \
+ u1=(int)t&0x3f; \
+ u3&=0x3f; \
+ LL^=DES_SPtrans[5][u1]; \
+ LL^=DES_SPtrans[7][u3]; }
+#endif
+#ifdef DES_RISC2
+#define D_ENCRYPT(LL,R,S) {\
+ unsigned int u1,u2,s1,s2; \
+ LOAD_DATA(R,S,u,t,E0,E1,u1); \
+ u>>=2L; \
+ t=ROTATE(t,6); \
+ u2=(int)u>>8L; \
+ u1=(int)u&0x3f; \
+ u2&=0x3f; \
+ LL^=DES_SPtrans[0][u1]; \
+ LL^=DES_SPtrans[2][u2]; \
+ s1=(int)u>>16L; \
+ s2=(int)u>>24L; \
+ s1&=0x3f; \
+ s2&=0x3f; \
+ LL^=DES_SPtrans[4][s1]; \
+ LL^=DES_SPtrans[6][s2]; \
+ u2=(int)t>>8L; \
+ u1=(int)t&0x3f; \
+ u2&=0x3f; \
+ LL^=DES_SPtrans[1][u1]; \
+ LL^=DES_SPtrans[3][u2]; \
+ s1=(int)t>>16; \
+ s2=(int)t>>24L; \
+ s1&=0x3f; \
+ s2&=0x3f; \
+ LL^=DES_SPtrans[5][s1]; \
+ LL^=DES_SPtrans[7][s2]; }
+#endif
+
+#else
+
+#define D_ENCRYPT(LL,R,S) {\
+ LOAD_DATA_tmp(R,S,u,t,E0,E1); \
+ t=ROTATE(t,4); \
+ LL^=\
+ DES_SPtrans[0][(u>> 2L)&0x3f]^ \
+ DES_SPtrans[2][(u>>10L)&0x3f]^ \
+ DES_SPtrans[4][(u>>18L)&0x3f]^ \
+ DES_SPtrans[6][(u>>26L)&0x3f]^ \
+ DES_SPtrans[1][(t>> 2L)&0x3f]^ \
+ DES_SPtrans[3][(t>>10L)&0x3f]^ \
+ DES_SPtrans[5][(t>>18L)&0x3f]^ \
+ DES_SPtrans[7][(t>>26L)&0x3f]; }
+#endif
+#endif
+
+ /* IP and FP
+ * The problem is more of a geometric problem that random bit fiddling.
+ 0 1 2 3 4 5 6 7 62 54 46 38 30 22 14 6
+ 8 9 10 11 12 13 14 15 60 52 44 36 28 20 12 4
+ 16 17 18 19 20 21 22 23 58 50 42 34 26 18 10 2
+ 24 25 26 27 28 29 30 31 to 56 48 40 32 24 16 8 0
+
+ 32 33 34 35 36 37 38 39 63 55 47 39 31 23 15 7
+ 40 41 42 43 44 45 46 47 61 53 45 37 29 21 13 5
+ 48 49 50 51 52 53 54 55 59 51 43 35 27 19 11 3
+ 56 57 58 59 60 61 62 63 57 49 41 33 25 17 9 1
+
+ The output has been subject to swaps of the form
+ 0 1 -> 3 1 but the odd and even bits have been put into
+ 2 3 2 0
+ different words. The main trick is to remember that
+ t=((l>>size)^r)&(mask);
+ r^=t;
+ l^=(t<<size);
+ can be used to swap and move bits between words.
+
+ So l = 0 1 2 3 r = 16 17 18 19
+ 4 5 6 7 20 21 22 23
+ 8 9 10 11 24 25 26 27
+ 12 13 14 15 28 29 30 31
+ becomes (for size == 2 and mask == 0x3333)
+ t = 2^16 3^17 -- -- l = 0 1 16 17 r = 2 3 18 19
+ 6^20 7^21 -- -- 4 5 20 21 6 7 22 23
+ 10^24 11^25 -- -- 8 9 24 25 10 11 24 25
+ 14^28 15^29 -- -- 12 13 28 29 14 15 28 29
+
+ Thanks for hints from Richard Outerbridge - he told me IP&FP
+ could be done in 15 xor, 10 shifts and 5 ands.
+ When I finally started to think of the problem in 2D
+ I first got ~42 operations without xors. When I remembered
+ how to use xors :-) I got it to its final state.
+ */
+#define PERM_OP(a,b,t,n,m) ((t)=((((a)>>(n))^(b))&(m)),\
+ (b)^=(t),\
+ (a)^=((t)<<(n)))
+
+#define IP(l,r) \
+ { \
+ register DES_LONG tt; \
+ PERM_OP(r,l,tt, 4,0x0f0f0f0fL); \
+ PERM_OP(l,r,tt,16,0x0000ffffL); \
+ PERM_OP(r,l,tt, 2,0x33333333L); \
+ PERM_OP(l,r,tt, 8,0x00ff00ffL); \
+ PERM_OP(r,l,tt, 1,0x55555555L); \
+ }
+
+#define FP(l,r) \
+ { \
+ register DES_LONG tt; \
+ PERM_OP(l,r,tt, 1,0x55555555L); \
+ PERM_OP(r,l,tt, 8,0x00ff00ffL); \
+ PERM_OP(l,r,tt, 2,0x33333333L); \
+ PERM_OP(r,l,tt,16,0x0000ffffL); \
+ PERM_OP(l,r,tt, 4,0x0f0f0f0fL); \
+ }
+
+extern const DES_LONG DES_SPtrans[8][64];
+
+void fcrypt_body(DES_LONG *out,DES_key_schedule *ks,
+ DES_LONG Eswap0, DES_LONG Eswap1);
+
+#ifdef OPENSSL_SMALL_FOOTPRINT
+#undef DES_UNROLL
+#endif
+#endif
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