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+/* Copyright (C) 2006 Martin Willi
+ * Hochschule fuer Technik Rapperswil
+ *
+ * Derived from Plutos DES library by Eric Young.
+ *
+ * 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.
+ *
+ * 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.]
+ *
+ * $Id: des_crypter.c 3910 2008-05-07 11:54:30Z martin $
+ */
+
+#include "des_crypter.h"
+
+typedef u_char des_cblock[8];
+
+typedef struct des_ks_struct {
+ des_cblock _;
+} des_key_schedule[16];
+
+
+typedef struct private_des_crypter_t private_des_crypter_t;
+
+/**
+ * Private data for des_crypter_t
+ */
+struct private_des_crypter_t {
+
+ /**
+ * Public part of this class.
+ */
+ des_crypter_t public;
+
+ /**
+ * Key size, depends on algoritm...
+ */
+ size_t key_size;
+
+ union {
+ /** key schedule for single des */
+ des_key_schedule ks;
+ /** key schedule for 3des */
+ des_key_schedule ks3[3];
+ };
+};
+
+
+#define DES_ENCRYPT 1
+#define DES_DECRYPT 0
+
+#define DES_LONG u_int32_t
+
+#if defined(WIN32) || defined(WIN16)
+#ifndef MSDOS
+#define MSDOS
+#endif
+#endif
+
+#ifndef DES_DEFAULT_OPTIONS
+/* the following is tweaked from a config script, that is why it is a
+ * protected undef/define */
+#ifndef DES_PTR
+#define DES_PTR
+#endif
+
+/* This helps C compiler generate the correct code for multiple functional
+ * units. It reduces register dependancies at the expense of 2 more
+ * registers */
+#ifndef DES_RISC1
+#define DES_RISC1
+#endif
+
+#ifndef DES_RISC2
+#undef DES_RISC2
+#endif
+
+#if defined(DES_RISC1) && defined(DES_RISC2)
+YOU SHOULD NOT HAVE BOTH DES_RISC1 AND DES_RISC2 DEFINED!!!!!
+#endif
+
+/* Unroll the inner loop, this sometimes helps, sometimes hinders.
+ * Very mucy CPU dependant */
+#ifndef DES_UNROLL
+#define DES_UNROLL
+#endif
+
+/* These default values were supplied by
+ * Peter Gutman <pgut001@cs.auckland.ac.nz>
+ * They are only used if nothing else has been defined */
+#if !defined(DES_PTR) && !defined(DES_RISC1) && !defined(DES_RISC2) && !defined(DES_UNROLL)
+/* Special defines which change the way the code is built depending on the
+ CPU and OS. For SGI machines you can use _MIPS_SZLONG (32 or 64) to find
+ even newer MIPS CPU's, but at the moment one size fits all for
+ optimization options. Older Sparc's work better with only UNROLL, but
+ there's no way to tell at compile time what it is you're running on */
+
+#if defined( sun ) /* Newer Sparc's */
+#define DES_PTR
+#define DES_RISC1
+#define DES_UNROLL
+#elif defined( __ultrix ) /* Older MIPS */
+#define DES_PTR
+#define DES_RISC2
+#define DES_UNROLL
+#elif defined( __osf1__ ) /* Alpha */
+#define DES_PTR
+#define DES_RISC2
+#elif defined ( _AIX ) /* RS6000 */
+ /* Unknown */
+#elif defined( __hpux ) /* HP-PA */
+ /* Unknown */
+#elif defined( __aux ) /* 68K */
+ /* Unknown */
+#elif defined( __dgux ) /* 88K (but P6 in latest boxes) */
+#define DES_UNROLL
+#elif defined( __sgi ) /* Newer MIPS */
+#define DES_PTR
+#define DES_RISC2
+#define DES_UNROLL
+#elif defined( i386 ) /* x86 boxes, should be gcc */
+#define DES_PTR
+#define DES_RISC1
+#define DES_UNROLL
+#endif /* Systems-specific speed defines */
+#endif
+
+#endif /* DES_DEFAULT_OPTIONS */
+
+#ifdef MSDOS /* Visual C++ 2.1 (Windows NT/95) */
+#include <stdlib.h>
+#include <errno.h>
+#include <time.h>
+#include <io.h>
+#ifndef RAND
+#define RAND
+#endif
+#undef NOPROTO
+#endif
+
+#if defined(__STDC__) || defined(VMS) || defined(M_XENIX) || defined(MSDOS)
+#ifndef __KERNEL__
+#include <string.h>
+#else
+#include <linux/string.h>
+#endif
+#endif
+
+#ifndef RAND
+#define RAND
+#endif
+
+#ifdef linux
+#undef RAND
+#endif
+
+#ifdef MSDOS
+#define getpid() 2
+#define RAND
+#undef NOPROTO
+#endif
+
+#if defined(NOCONST)
+#define const
+#endif
+
+#ifdef __STDC__
+#undef NOPROTO
+#endif
+
+#ifdef RAND
+#define srandom(s) srand(s)
+#define random rand
+#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(WIN32)
+#define ROTATE(a,n) (_lrotr(a,n))
+#else
+#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 achitecture. 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 occured 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^= *(DES_LONG *)((unsigned char *)des_SP +u1); \
+ LL^= *(DES_LONG *)((unsigned char *)des_SP+0x200+u2); \
+ u3=(int)(u>>8L); \
+ u1=(int)u&0xfc; \
+ u3&=0xfc; \
+ LL^= *(DES_LONG *)((unsigned char *)des_SP+0x400+u1); \
+ LL^= *(DES_LONG *)((unsigned char *)des_SP+0x600+u3); \
+ u2=(int)t>>8L; \
+ u1=(int)t&0xfc; \
+ u2&=0xfc; \
+ t>>=16L; \
+ LL^= *(DES_LONG *)((unsigned char *)des_SP+0x100+u1); \
+ LL^= *(DES_LONG *)((unsigned char *)des_SP+0x300+u2); \
+ u3=(int)t>>8L; \
+ u1=(int)t&0xfc; \
+ u3&=0xfc; \
+ LL^= *(DES_LONG *)((unsigned char *)des_SP+0x500+u1); \
+ LL^= *(DES_LONG *)((unsigned char *)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^= *(DES_LONG *)((unsigned char *)des_SP +u1); \
+ LL^= *(DES_LONG *)((unsigned char *)des_SP+0x200+u2); \
+ s1=(int)(u>>16L); \
+ s2=(int)(u>>24L); \
+ s1&=0xfc; \
+ s2&=0xfc; \
+ LL^= *(DES_LONG *)((unsigned char *)des_SP+0x400+s1); \
+ LL^= *(DES_LONG *)((unsigned char *)des_SP+0x600+s2); \
+ u2=(int)t>>8L; \
+ u1=(int)t&0xfc; \
+ u2&=0xfc; \
+ LL^= *(DES_LONG *)((unsigned char *)des_SP+0x100+u1); \
+ LL^= *(DES_LONG *)((unsigned char *)des_SP+0x300+u2); \
+ s1=(int)(t>>16L); \
+ s2=(int)(t>>24L); \
+ s1&=0xfc; \
+ s2&=0xfc; \
+ LL^= *(DES_LONG *)((unsigned char *)des_SP+0x500+s1); \
+ LL^= *(DES_LONG *)((unsigned char *)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^= \
+ *(DES_LONG *)((unsigned char *)des_SP +((u )&0xfc))^ \
+ *(DES_LONG *)((unsigned char *)des_SP+0x200+((u>> 8L)&0xfc))^ \
+ *(DES_LONG *)((unsigned char *)des_SP+0x400+((u>>16L)&0xfc))^ \
+ *(DES_LONG *)((unsigned char *)des_SP+0x600+((u>>24L)&0xfc))^ \
+ *(DES_LONG *)((unsigned char *)des_SP+0x100+((t )&0xfc))^ \
+ *(DES_LONG *)((unsigned char *)des_SP+0x300+((t>> 8L)&0xfc))^ \
+ *(DES_LONG *)((unsigned char *)des_SP+0x500+((t>>16L)&0xfc))^ \
+ *(DES_LONG *)((unsigned char *)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); \
+}
+
+#ifndef NOPROTO
+void fcrypt_body(DES_LONG *out,des_key_schedule ks,
+ DES_LONG Eswap0, DES_LONG Eswap1);
+#else
+void fcrypt_body();
+#endif
+
+static const DES_LONG des_skb[8][64]={
+ { /* for C bits (numbered as per FIPS 46) 1 2 3 4 5 6 */
+ 0x00000000L,0x00000010L,0x20000000L,0x20000010L,
+ 0x00010000L,0x00010010L,0x20010000L,0x20010010L,
+ 0x00000800L,0x00000810L,0x20000800L,0x20000810L,
+ 0x00010800L,0x00010810L,0x20010800L,0x20010810L,
+ 0x00000020L,0x00000030L,0x20000020L,0x20000030L,
+ 0x00010020L,0x00010030L,0x20010020L,0x20010030L,
+ 0x00000820L,0x00000830L,0x20000820L,0x20000830L,
+ 0x00010820L,0x00010830L,0x20010820L,0x20010830L,
+ 0x00080000L,0x00080010L,0x20080000L,0x20080010L,
+ 0x00090000L,0x00090010L,0x20090000L,0x20090010L,
+ 0x00080800L,0x00080810L,0x20080800L,0x20080810L,
+ 0x00090800L,0x00090810L,0x20090800L,0x20090810L,
+ 0x00080020L,0x00080030L,0x20080020L,0x20080030L,
+ 0x00090020L,0x00090030L,0x20090020L,0x20090030L,
+ 0x00080820L,0x00080830L,0x20080820L,0x20080830L,
+ 0x00090820L,0x00090830L,0x20090820L,0x20090830L,
+ },
+ { /* for C bits (numbered as per FIPS 46) 7 8 10 11 12 13 */
+ 0x00000000L,0x02000000L,0x00002000L,0x02002000L,
+ 0x00200000L,0x02200000L,0x00202000L,0x02202000L,
+ 0x00000004L,0x02000004L,0x00002004L,0x02002004L,
+ 0x00200004L,0x02200004L,0x00202004L,0x02202004L,
+ 0x00000400L,0x02000400L,0x00002400L,0x02002400L,
+ 0x00200400L,0x02200400L,0x00202400L,0x02202400L,
+ 0x00000404L,0x02000404L,0x00002404L,0x02002404L,
+ 0x00200404L,0x02200404L,0x00202404L,0x02202404L,
+ 0x10000000L,0x12000000L,0x10002000L,0x12002000L,
+ 0x10200000L,0x12200000L,0x10202000L,0x12202000L,
+ 0x10000004L,0x12000004L,0x10002004L,0x12002004L,
+ 0x10200004L,0x12200004L,0x10202004L,0x12202004L,
+ 0x10000400L,0x12000400L,0x10002400L,0x12002400L,
+ 0x10200400L,0x12200400L,0x10202400L,0x12202400L,
+ 0x10000404L,0x12000404L,0x10002404L,0x12002404L,
+ 0x10200404L,0x12200404L,0x10202404L,0x12202404L,
+ },
+ { /* for C bits (numbered as per FIPS 46) 14 15 16 17 19 20 */
+ 0x00000000L,0x00000001L,0x00040000L,0x00040001L,
+ 0x01000000L,0x01000001L,0x01040000L,0x01040001L,
+ 0x00000002L,0x00000003L,0x00040002L,0x00040003L,
+ 0x01000002L,0x01000003L,0x01040002L,0x01040003L,
+ 0x00000200L,0x00000201L,0x00040200L,0x00040201L,
+ 0x01000200L,0x01000201L,0x01040200L,0x01040201L,
+ 0x00000202L,0x00000203L,0x00040202L,0x00040203L,
+ 0x01000202L,0x01000203L,0x01040202L,0x01040203L,
+ 0x08000000L,0x08000001L,0x08040000L,0x08040001L,
+ 0x09000000L,0x09000001L,0x09040000L,0x09040001L,
+ 0x08000002L,0x08000003L,0x08040002L,0x08040003L,
+ 0x09000002L,0x09000003L,0x09040002L,0x09040003L,
+ 0x08000200L,0x08000201L,0x08040200L,0x08040201L,
+ 0x09000200L,0x09000201L,0x09040200L,0x09040201L,
+ 0x08000202L,0x08000203L,0x08040202L,0x08040203L,
+ 0x09000202L,0x09000203L,0x09040202L,0x09040203L,
+ },
+ { /* for C bits (numbered as per FIPS 46) 21 23 24 26 27 28 */
+ 0x00000000L,0x00100000L,0x00000100L,0x00100100L,
+ 0x00000008L,0x00100008L,0x00000108L,0x00100108L,
+ 0x00001000L,0x00101000L,0x00001100L,0x00101100L,
+ 0x00001008L,0x00101008L,0x00001108L,0x00101108L,
+ 0x04000000L,0x04100000L,0x04000100L,0x04100100L,
+ 0x04000008L,0x04100008L,0x04000108L,0x04100108L,
+ 0x04001000L,0x04101000L,0x04001100L,0x04101100L,
+ 0x04001008L,0x04101008L,0x04001108L,0x04101108L,
+ 0x00020000L,0x00120000L,0x00020100L,0x00120100L,
+ 0x00020008L,0x00120008L,0x00020108L,0x00120108L,
+ 0x00021000L,0x00121000L,0x00021100L,0x00121100L,
+ 0x00021008L,0x00121008L,0x00021108L,0x00121108L,
+ 0x04020000L,0x04120000L,0x04020100L,0x04120100L,
+ 0x04020008L,0x04120008L,0x04020108L,0x04120108L,
+ 0x04021000L,0x04121000L,0x04021100L,0x04121100L,
+ 0x04021008L,0x04121008L,0x04021108L,0x04121108L,
+ },
+ { /* for D bits (numbered as per FIPS 46) 1 2 3 4 5 6 */
+ 0x00000000L,0x10000000L,0x00010000L,0x10010000L,
+ 0x00000004L,0x10000004L,0x00010004L,0x10010004L,
+ 0x20000000L,0x30000000L,0x20010000L,0x30010000L,
+ 0x20000004L,0x30000004L,0x20010004L,0x30010004L,
+ 0x00100000L,0x10100000L,0x00110000L,0x10110000L,
+ 0x00100004L,0x10100004L,0x00110004L,0x10110004L,
+ 0x20100000L,0x30100000L,0x20110000L,0x30110000L,
+ 0x20100004L,0x30100004L,0x20110004L,0x30110004L,
+ 0x00001000L,0x10001000L,0x00011000L,0x10011000L,
+ 0x00001004L,0x10001004L,0x00011004L,0x10011004L,
+ 0x20001000L,0x30001000L,0x20011000L,0x30011000L,
+ 0x20001004L,0x30001004L,0x20011004L,0x30011004L,
+ 0x00101000L,0x10101000L,0x00111000L,0x10111000L,
+ 0x00101004L,0x10101004L,0x00111004L,0x10111004L,
+ 0x20101000L,0x30101000L,0x20111000L,0x30111000L,
+ 0x20101004L,0x30101004L,0x20111004L,0x30111004L,
+ },
+ { /* for D bits (numbered as per FIPS 46) 8 9 11 12 13 14 */
+ 0x00000000L,0x08000000L,0x00000008L,0x08000008L,
+ 0x00000400L,0x08000400L,0x00000408L,0x08000408L,
+ 0x00020000L,0x08020000L,0x00020008L,0x08020008L,
+ 0x00020400L,0x08020400L,0x00020408L,0x08020408L,
+ 0x00000001L,0x08000001L,0x00000009L,0x08000009L,
+ 0x00000401L,0x08000401L,0x00000409L,0x08000409L,
+ 0x00020001L,0x08020001L,0x00020009L,0x08020009L,
+ 0x00020401L,0x08020401L,0x00020409L,0x08020409L,
+ 0x02000000L,0x0A000000L,0x02000008L,0x0A000008L,
+ 0x02000400L,0x0A000400L,0x02000408L,0x0A000408L,
+ 0x02020000L,0x0A020000L,0x02020008L,0x0A020008L,
+ 0x02020400L,0x0A020400L,0x02020408L,0x0A020408L,
+ 0x02000001L,0x0A000001L,0x02000009L,0x0A000009L,
+ 0x02000401L,0x0A000401L,0x02000409L,0x0A000409L,
+ 0x02020001L,0x0A020001L,0x02020009L,0x0A020009L,
+ 0x02020401L,0x0A020401L,0x02020409L,0x0A020409L,
+ },
+ { /* for D bits (numbered as per FIPS 46) 16 17 18 19 20 21 */
+ 0x00000000L,0x00000100L,0x00080000L,0x00080100L,
+ 0x01000000L,0x01000100L,0x01080000L,0x01080100L,
+ 0x00000010L,0x00000110L,0x00080010L,0x00080110L,
+ 0x01000010L,0x01000110L,0x01080010L,0x01080110L,
+ 0x00200000L,0x00200100L,0x00280000L,0x00280100L,
+ 0x01200000L,0x01200100L,0x01280000L,0x01280100L,
+ 0x00200010L,0x00200110L,0x00280010L,0x00280110L,
+ 0x01200010L,0x01200110L,0x01280010L,0x01280110L,
+ 0x00000200L,0x00000300L,0x00080200L,0x00080300L,
+ 0x01000200L,0x01000300L,0x01080200L,0x01080300L,
+ 0x00000210L,0x00000310L,0x00080210L,0x00080310L,
+ 0x01000210L,0x01000310L,0x01080210L,0x01080310L,
+ 0x00200200L,0x00200300L,0x00280200L,0x00280300L,
+ 0x01200200L,0x01200300L,0x01280200L,0x01280300L,
+ 0x00200210L,0x00200310L,0x00280210L,0x00280310L,
+ 0x01200210L,0x01200310L,0x01280210L,0x01280310L,
+ },
+ { /* for D bits (numbered as per FIPS 46) 22 23 24 25 27 28 */
+ 0x00000000L,0x04000000L,0x00040000L,0x04040000L,
+ 0x00000002L,0x04000002L,0x00040002L,0x04040002L,
+ 0x00002000L,0x04002000L,0x00042000L,0x04042000L,
+ 0x00002002L,0x04002002L,0x00042002L,0x04042002L,
+ 0x00000020L,0x04000020L,0x00040020L,0x04040020L,
+ 0x00000022L,0x04000022L,0x00040022L,0x04040022L,
+ 0x00002020L,0x04002020L,0x00042020L,0x04042020L,
+ 0x00002022L,0x04002022L,0x00042022L,0x04042022L,
+ 0x00000800L,0x04000800L,0x00040800L,0x04040800L,
+ 0x00000802L,0x04000802L,0x00040802L,0x04040802L,
+ 0x00002800L,0x04002800L,0x00042800L,0x04042800L,
+ 0x00002802L,0x04002802L,0x00042802L,0x04042802L,
+ 0x00000820L,0x04000820L,0x00040820L,0x04040820L,
+ 0x00000822L,0x04000822L,0x00040822L,0x04040822L,
+ 0x00002820L,0x04002820L,0x00042820L,0x04042820L,
+ 0x00002822L,0x04002822L,0x00042822L,0x04042822L,
+ }
+};
+
+const DES_LONG des_SPtrans[8][64]={
+ {
+ /* nibble 0 */
+ 0x02080800L, 0x00080000L, 0x02000002L, 0x02080802L,
+ 0x02000000L, 0x00080802L, 0x00080002L, 0x02000002L,
+ 0x00080802L, 0x02080800L, 0x02080000L, 0x00000802L,
+ 0x02000802L, 0x02000000L, 0x00000000L, 0x00080002L,
+ 0x00080000L, 0x00000002L, 0x02000800L, 0x00080800L,
+ 0x02080802L, 0x02080000L, 0x00000802L, 0x02000800L,
+ 0x00000002L, 0x00000800L, 0x00080800L, 0x02080002L,
+ 0x00000800L, 0x02000802L, 0x02080002L, 0x00000000L,
+ 0x00000000L, 0x02080802L, 0x02000800L, 0x00080002L,
+ 0x02080800L, 0x00080000L, 0x00000802L, 0x02000800L,
+ 0x02080002L, 0x00000800L, 0x00080800L, 0x02000002L,
+ 0x00080802L, 0x00000002L, 0x02000002L, 0x02080000L,
+ 0x02080802L, 0x00080800L, 0x02080000L, 0x02000802L,
+ 0x02000000L, 0x00000802L, 0x00080002L, 0x00000000L,
+ 0x00080000L, 0x02000000L, 0x02000802L, 0x02080800L,
+ 0x00000002L, 0x02080002L, 0x00000800L, 0x00080802L,
+ },
+ { /* nibble 1 */
+ 0x40108010L, 0x00000000L, 0x00108000L, 0x40100000L,
+ 0x40000010L, 0x00008010L, 0x40008000L, 0x00108000L,
+ 0x00008000L, 0x40100010L, 0x00000010L, 0x40008000L,
+ 0x00100010L, 0x40108000L, 0x40100000L, 0x00000010L,
+ 0x00100000L, 0x40008010L, 0x40100010L, 0x00008000L,
+ 0x00108010L, 0x40000000L, 0x00000000L, 0x00100010L,
+ 0x40008010L, 0x00108010L, 0x40108000L, 0x40000010L,
+ 0x40000000L, 0x00100000L, 0x00008010L, 0x40108010L,
+ 0x00100010L, 0x40108000L, 0x40008000L, 0x00108010L,
+ 0x40108010L, 0x00100010L, 0x40000010L, 0x00000000L,
+ 0x40000000L, 0x00008010L, 0x00100000L, 0x40100010L,
+ 0x00008000L, 0x40000000L, 0x00108010L, 0x40008010L,
+ 0x40108000L, 0x00008000L, 0x00000000L, 0x40000010L,
+ 0x00000010L, 0x40108010L, 0x00108000L, 0x40100000L,
+ 0x40100010L, 0x00100000L, 0x00008010L, 0x40008000L,
+ 0x40008010L, 0x00000010L, 0x40100000L, 0x00108000L,
+ },
+ { /* nibble 2 */
+ 0x04000001L, 0x04040100L, 0x00000100L, 0x04000101L,
+ 0x00040001L, 0x04000000L, 0x04000101L, 0x00040100L,
+ 0x04000100L, 0x00040000L, 0x04040000L, 0x00000001L,
+ 0x04040101L, 0x00000101L, 0x00000001L, 0x04040001L,
+ 0x00000000L, 0x00040001L, 0x04040100L, 0x00000100L,
+ 0x00000101L, 0x04040101L, 0x00040000L, 0x04000001L,
+ 0x04040001L, 0x04000100L, 0x00040101L, 0x04040000L,
+ 0x00040100L, 0x00000000L, 0x04000000L, 0x00040101L,
+ 0x04040100L, 0x00000100L, 0x00000001L, 0x00040000L,
+ 0x00000101L, 0x00040001L, 0x04040000L, 0x04000101L,
+ 0x00000000L, 0x04040100L, 0x00040100L, 0x04040001L,
+ 0x00040001L, 0x04000000L, 0x04040101L, 0x00000001L,
+ 0x00040101L, 0x04000001L, 0x04000000L, 0x04040101L,
+ 0x00040000L, 0x04000100L, 0x04000101L, 0x00040100L,
+ 0x04000100L, 0x00000000L, 0x04040001L, 0x00000101L,
+ 0x04000001L, 0x00040101L, 0x00000100L, 0x04040000L,
+ },
+ { /* nibble 3 */
+ 0x00401008L, 0x10001000L, 0x00000008L, 0x10401008L,
+ 0x00000000L, 0x10400000L, 0x10001008L, 0x00400008L,
+ 0x10401000L, 0x10000008L, 0x10000000L, 0x00001008L,
+ 0x10000008L, 0x00401008L, 0x00400000L, 0x10000000L,
+ 0x10400008L, 0x00401000L, 0x00001000L, 0x00000008L,
+ 0x00401000L, 0x10001008L, 0x10400000L, 0x00001000L,
+ 0x00001008L, 0x00000000L, 0x00400008L, 0x10401000L,
+ 0x10001000L, 0x10400008L, 0x10401008L, 0x00400000L,
+ 0x10400008L, 0x00001008L, 0x00400000L, 0x10000008L,
+ 0x00401000L, 0x10001000L, 0x00000008L, 0x10400000L,
+ 0x10001008L, 0x00000000L, 0x00001000L, 0x00400008L,
+ 0x00000000L, 0x10400008L, 0x10401000L, 0x00001000L,
+ 0x10000000L, 0x10401008L, 0x00401008L, 0x00400000L,
+ 0x10401008L, 0x00000008L, 0x10001000L, 0x00401008L,
+ 0x00400008L, 0x00401000L, 0x10400000L, 0x10001008L,
+ 0x00001008L, 0x10000000L, 0x10000008L, 0x10401000L,
+ },
+ { /* nibble 4 */
+ 0x08000000L, 0x00010000L, 0x00000400L, 0x08010420L,
+ 0x08010020L, 0x08000400L, 0x00010420L, 0x08010000L,
+ 0x00010000L, 0x00000020L, 0x08000020L, 0x00010400L,
+ 0x08000420L, 0x08010020L, 0x08010400L, 0x00000000L,
+ 0x00010400L, 0x08000000L, 0x00010020L, 0x00000420L,
+ 0x08000400L, 0x00010420L, 0x00000000L, 0x08000020L,
+ 0x00000020L, 0x08000420L, 0x08010420L, 0x00010020L,
+ 0x08010000L, 0x00000400L, 0x00000420L, 0x08010400L,
+ 0x08010400L, 0x08000420L, 0x00010020L, 0x08010000L,
+ 0x00010000L, 0x00000020L, 0x08000020L, 0x08000400L,
+ 0x08000000L, 0x00010400L, 0x08010420L, 0x00000000L,
+ 0x00010420L, 0x08000000L, 0x00000400L, 0x00010020L,
+ 0x08000420L, 0x00000400L, 0x00000000L, 0x08010420L,
+ 0x08010020L, 0x08010400L, 0x00000420L, 0x00010000L,
+ 0x00010400L, 0x08010020L, 0x08000400L, 0x00000420L,
+ 0x00000020L, 0x00010420L, 0x08010000L, 0x08000020L,
+ },
+ { /* nibble 5 */
+ 0x80000040L, 0x00200040L, 0x00000000L, 0x80202000L,
+ 0x00200040L, 0x00002000L, 0x80002040L, 0x00200000L,
+ 0x00002040L, 0x80202040L, 0x00202000L, 0x80000000L,
+ 0x80002000L, 0x80000040L, 0x80200000L, 0x00202040L,
+ 0x00200000L, 0x80002040L, 0x80200040L, 0x00000000L,
+ 0x00002000L, 0x00000040L, 0x80202000L, 0x80200040L,
+ 0x80202040L, 0x80200000L, 0x80000000L, 0x00002040L,
+ 0x00000040L, 0x00202000L, 0x00202040L, 0x80002000L,
+ 0x00002040L, 0x80000000L, 0x80002000L, 0x00202040L,
+ 0x80202000L, 0x00200040L, 0x00000000L, 0x80002000L,
+ 0x80000000L, 0x00002000L, 0x80200040L, 0x00200000L,
+ 0x00200040L, 0x80202040L, 0x00202000L, 0x00000040L,
+ 0x80202040L, 0x00202000L, 0x00200000L, 0x80002040L,
+ 0x80000040L, 0x80200000L, 0x00202040L, 0x00000000L,
+ 0x00002000L, 0x80000040L, 0x80002040L, 0x80202000L,
+ 0x80200000L, 0x00002040L, 0x00000040L, 0x80200040L,
+ },
+ { /* nibble 6 */
+ 0x00004000L, 0x00000200L, 0x01000200L, 0x01000004L,
+ 0x01004204L, 0x00004004L, 0x00004200L, 0x00000000L,
+ 0x01000000L, 0x01000204L, 0x00000204L, 0x01004000L,
+ 0x00000004L, 0x01004200L, 0x01004000L, 0x00000204L,
+ 0x01000204L, 0x00004000L, 0x00004004L, 0x01004204L,
+ 0x00000000L, 0x01000200L, 0x01000004L, 0x00004200L,
+ 0x01004004L, 0x00004204L, 0x01004200L, 0x00000004L,
+ 0x00004204L, 0x01004004L, 0x00000200L, 0x01000000L,
+ 0x00004204L, 0x01004000L, 0x01004004L, 0x00000204L,
+ 0x00004000L, 0x00000200L, 0x01000000L, 0x01004004L,
+ 0x01000204L, 0x00004204L, 0x00004200L, 0x00000000L,
+ 0x00000200L, 0x01000004L, 0x00000004L, 0x01000200L,
+ 0x00000000L, 0x01000204L, 0x01000200L, 0x00004200L,
+ 0x00000204L, 0x00004000L, 0x01004204L, 0x01000000L,
+ 0x01004200L, 0x00000004L, 0x00004004L, 0x01004204L,
+ 0x01000004L, 0x01004200L, 0x01004000L, 0x00004004L,
+ },
+ { /* nibble 7 */
+ 0x20800080L, 0x20820000L, 0x00020080L, 0x00000000L,
+ 0x20020000L, 0x00800080L, 0x20800000L, 0x20820080L,
+ 0x00000080L, 0x20000000L, 0x00820000L, 0x00020080L,
+ 0x00820080L, 0x20020080L, 0x20000080L, 0x20800000L,
+ 0x00020000L, 0x00820080L, 0x00800080L, 0x20020000L,
+ 0x20820080L, 0x20000080L, 0x00000000L, 0x00820000L,
+ 0x20000000L, 0x00800000L, 0x20020080L, 0x20800080L,
+ 0x00800000L, 0x00020000L, 0x20820000L, 0x00000080L,
+ 0x00800000L, 0x00020000L, 0x20000080L, 0x20820080L,
+ 0x00020080L, 0x20000000L, 0x00000000L, 0x00820000L,
+ 0x20800080L, 0x20020080L, 0x20020000L, 0x00800080L,
+ 0x20820000L, 0x00000080L, 0x00800080L, 0x20020000L,
+ 0x20820080L, 0x00800000L, 0x20800000L, 0x20000080L,
+ 0x00820000L, 0x00020080L, 0x20020080L, 0x20800000L,
+ 0x00000080L, 0x20820000L, 0x00820080L, 0x00000000L,
+ 0x20000000L, 0x20800080L, 0x00020000L, 0x00820080L,
+ }
+};
+
+#define HPERM_OP(a,t,n,m) ((t)=((((a)<<(16-(n)))^(a))&(m)),\
+ (a)=(a)^(t)^(t>>(16-(n))))
+
+static const unsigned char odd_parity[256]={
+ 1, 1, 2, 2, 4, 4, 7, 7, 8, 8, 11, 11, 13, 13, 14, 14,
+ 16, 16, 19, 19, 21, 21, 22, 22, 25, 25, 26, 26, 28, 28, 31, 31,
+ 32, 32, 35, 35, 37, 37, 38, 38, 41, 41, 42, 42, 44, 44, 47, 47,
+ 49, 49, 50, 50, 52, 52, 55, 55, 56, 56, 59, 59, 61, 61, 62, 62,
+ 64, 64, 67, 67, 69, 69, 70, 70, 73, 73, 74, 74, 76, 76, 79, 79,
+ 81, 81, 82, 82, 84, 84, 87, 87, 88, 88, 91, 91, 93, 93, 94, 94,
+ 97, 97, 98, 98,100,100,103,103,104,104,107,107,109,109,110,110,
+ 112,112,115,115,117,117,118,118,121,121,122,122,124,124,127,127,
+ 128,128,131,131,133,133,134,134,137,137,138,138,140,140,143,143,
+ 145,145,146,146,148,148,151,151,152,152,155,155,157,157,158,158,
+ 161,161,162,162,164,164,167,167,168,168,171,171,173,173,174,174,
+ 176,176,179,179,181,181,182,182,185,185,186,186,188,188,191,191,
+ 193,193,194,194,196,196,199,199,200,200,203,203,205,205,206,206,
+ 208,208,211,211,213,213,214,214,217,217,218,218,220,220,223,223,
+ 224,224,227,227,229,229,230,230,233,233,234,234,236,236,239,239,
+ 241,241,242,242,244,244,247,247,248,248,251,251,253,253,254,254
+};
+
+/**
+ * Create key schedule for a single DES 64Bit key
+ */
+static int des_set_key(des_cblock *key, des_key_schedule *schedule)
+{
+ static int shifts2[16] = {0,0,1,1,1,1,1,1,0,1,1,1,1,1,1,0};
+ register DES_LONG c,d,t,s,t2;
+ register unsigned char *in;
+ register DES_LONG *k;
+ register int i;
+ des_cblock odd;
+
+ for (i = 0; i < sizeof(des_cblock); i++)
+ {
+ odd[i] = odd_parity[(*key)[i]];
+ }
+
+ k=(DES_LONG *)schedule;
+ in=(unsigned char *)&odd;
+
+ c2l(in,c);
+ c2l(in,d);
+
+ /* do PC1 in 60 simple operations */
+/* PERM_OP(d,c,t,4,0x0f0f0f0fL);
+ HPERM_OP(c,t,-2, 0xcccc0000L);
+ HPERM_OP(c,t,-1, 0xaaaa0000L);
+ HPERM_OP(c,t, 8, 0x00ff0000L);
+ HPERM_OP(c,t,-1, 0xaaaa0000L);
+ HPERM_OP(d,t,-8, 0xff000000L);
+ HPERM_OP(d,t, 8, 0x00ff0000L);
+ HPERM_OP(d,t, 2, 0x33330000L);
+ d=((d&0x00aa00aaL)<<7L)|((d&0x55005500L)>>7L)|(d&0xaa55aa55L);
+ d=(d>>8)|((c&0xf0000000L)>>4);
+ c&=0x0fffffffL; */
+
+ /* I now do it in 47 simple operations :-)
+ * Thanks to John Fletcher (john_fletcher@lccmail.ocf.llnl.gov)
+ * for the inspiration. :-) */
+ PERM_OP (d,c,t,4,0x0f0f0f0fL);
+ HPERM_OP(c,t,-2,0xcccc0000L);
+ HPERM_OP(d,t,-2,0xcccc0000L);
+ PERM_OP (d,c,t,1,0x55555555L);
+ PERM_OP (c,d,t,8,0x00ff00ffL);
+ PERM_OP (d,c,t,1,0x55555555L);
+ d= (((d&0x000000ffL)<<16L)| (d&0x0000ff00L) |
+ ((d&0x00ff0000L)>>16L)|((c&0xf0000000L)>>4L));
+ c&=0x0fffffffL;
+
+ for (i=0; i<ITERATIONS; i++)
+ {
+ if (shifts2[i])
+ { c=((c>>2L)|(c<<26L)); d=((d>>2L)|(d<<26L)); }
+ else
+ { c=((c>>1L)|(c<<27L)); d=((d>>1L)|(d<<27L)); }
+ c&=0x0fffffffL;
+ d&=0x0fffffffL;
+ /* could be a few less shifts but I am to lazy at this
+ * point in time to investigate */
+ s= des_skb[0][ (c )&0x3f ]|
+ des_skb[1][((c>> 6)&0x03)|((c>> 7L)&0x3c)]|
+ des_skb[2][((c>>13)&0x0f)|((c>>14L)&0x30)]|
+ des_skb[3][((c>>20)&0x01)|((c>>21L)&0x06) |
+ ((c>>22L)&0x38)];
+ t= des_skb[4][ (d )&0x3f ]|
+ des_skb[5][((d>> 7L)&0x03)|((d>> 8L)&0x3c)]|
+ des_skb[6][ (d>>15L)&0x3f ]|
+ des_skb[7][((d>>21L)&0x0f)|((d>>22L)&0x30)];
+
+ /* table contained 0213 4657 */
+ t2=((t<<16L)|(s&0x0000ffffL))&0xffffffffL;
+ *(k++)=ROTATE(t2,30)&0xffffffffL;
+
+ t2=((s>>16L)|(t&0xffff0000L));
+ *(k++)=ROTATE(t2,26)&0xffffffffL;
+ }
+ return(0);
+}
+
+
+static void des_encrypt(DES_LONG *data, des_key_schedule ks, int enc)
+{
+ register DES_LONG l,r,t,u;
+#ifdef DES_PTR
+ register unsigned char *des_SP=(unsigned char *)des_SPtrans;
+#endif
+#ifndef DES_UNROLL
+ register int i;
+#endif
+ register DES_LONG *s;
+
+ r=data[0];
+ l=data[1];
+
+ IP(r,l);
+ /* Things have been modified so that the initial rotate is
+ * done outside the loop. This required the
+ * des_SPtrans values in sp.h to be rotated 1 bit to the right.
+ * One perl script later and things have a 5% speed up on a sparc2.
+ * Thanks to Richard Outerbridge <71755.204@CompuServe.COM>
+ * for pointing this out. */
+ /* clear the top bits on machines with 8byte longs */
+ /* shift left by 2 */
+ r=ROTATE(r,29)&0xffffffffL;
+ l=ROTATE(l,29)&0xffffffffL;
+
+ s=(DES_LONG *)ks;
+ /* I don't know if it is worth the effort of loop unrolling the
+ * inner loop */
+ if (enc)
+ {
+#ifdef DES_UNROLL
+ D_ENCRYPT(l,r, 0); /* 1 */
+ D_ENCRYPT(r,l, 2); /* 2 */
+ D_ENCRYPT(l,r, 4); /* 3 */
+ D_ENCRYPT(r,l, 6); /* 4 */
+ D_ENCRYPT(l,r, 8); /* 5 */
+ D_ENCRYPT(r,l,10); /* 6 */
+ D_ENCRYPT(l,r,12); /* 7 */
+ D_ENCRYPT(r,l,14); /* 8 */
+ D_ENCRYPT(l,r,16); /* 9 */
+ D_ENCRYPT(r,l,18); /* 10 */
+ D_ENCRYPT(l,r,20); /* 11 */
+ D_ENCRYPT(r,l,22); /* 12 */
+ D_ENCRYPT(l,r,24); /* 13 */
+ D_ENCRYPT(r,l,26); /* 14 */
+ D_ENCRYPT(l,r,28); /* 15 */
+ D_ENCRYPT(r,l,30); /* 16 */
+#else
+ for (i=0; i<32; i+=8)
+{
+ D_ENCRYPT(l,r,i+0); /* 1 */
+ D_ENCRYPT(r,l,i+2); /* 2 */
+ D_ENCRYPT(l,r,i+4); /* 3 */
+ D_ENCRYPT(r,l,i+6); /* 4 */
+}
+#endif
+ }
+ else
+{
+#ifdef DES_UNROLL
+ D_ENCRYPT(l,r,30); /* 16 */
+ D_ENCRYPT(r,l,28); /* 15 */
+ D_ENCRYPT(l,r,26); /* 14 */
+ D_ENCRYPT(r,l,24); /* 13 */
+ D_ENCRYPT(l,r,22); /* 12 */
+ D_ENCRYPT(r,l,20); /* 11 */
+ D_ENCRYPT(l,r,18); /* 10 */
+ D_ENCRYPT(r,l,16); /* 9 */
+ D_ENCRYPT(l,r,14); /* 8 */
+ D_ENCRYPT(r,l,12); /* 7 */
+ D_ENCRYPT(l,r,10); /* 6 */
+ D_ENCRYPT(r,l, 8); /* 5 */
+ D_ENCRYPT(l,r, 6); /* 4 */
+ D_ENCRYPT(r,l, 4); /* 3 */
+ D_ENCRYPT(l,r, 2); /* 2 */
+ D_ENCRYPT(r,l, 0); /* 1 */
+#else
+ for (i=30; i>0; i-=8)
+{
+ D_ENCRYPT(l,r,i-0); /* 16 */
+ D_ENCRYPT(r,l,i-2); /* 15 */
+ D_ENCRYPT(l,r,i-4); /* 14 */
+ D_ENCRYPT(r,l,i-6); /* 13 */
+}
+#endif
+}
+
+ /* rotate and clear the top bits on machines with 8byte longs */
+ l=ROTATE(l,3)&0xffffffffL;
+ r=ROTATE(r,3)&0xffffffffL;
+
+ FP(r,l);
+ data[0]=l;
+ data[1]=r;
+ l=r=t=u=0;
+}
+
+/**
+ * DES CBC encrypt decrypt routine
+ */
+static void des_cbc_encrypt(des_cblock *input, des_cblock *output, long length,
+ des_key_schedule schedule, des_cblock *ivec, int enc)
+{
+ register DES_LONG tin0,tin1;
+ register DES_LONG tout0,tout1,xor0,xor1;
+ register unsigned char *in,*out;
+ register long l=length;
+ DES_LONG tin[2];
+ unsigned char *iv;
+
+ in=(unsigned char *)input;
+ out=(unsigned char *)output;
+ iv=(unsigned char *)ivec;
+
+ if (enc)
+ {
+ c2l(iv,tout0);
+ c2l(iv,tout1);
+ for (l-=8; l>=0; l-=8)
+ {
+ c2l(in,tin0);
+ c2l(in,tin1);
+ tin0^=tout0; tin[0]=tin0;
+ tin1^=tout1; tin[1]=tin1;
+ des_encrypt((DES_LONG *)tin,schedule,DES_ENCRYPT);
+ tout0=tin[0]; l2c(tout0,out);
+ tout1=tin[1]; l2c(tout1,out);
+ }
+ if (l != -8)
+ {
+ c2ln(in,tin0,tin1,l+8);
+ tin0^=tout0; tin[0]=tin0;
+ tin1^=tout1; tin[1]=tin1;
+ des_encrypt((DES_LONG *)tin,schedule,DES_ENCRYPT);
+ tout0=tin[0]; l2c(tout0,out);
+ tout1=tin[1]; l2c(tout1,out);
+ }
+ }
+ else
+ {
+ c2l(iv,xor0);
+ c2l(iv,xor1);
+ for (l-=8; l>=0; l-=8)
+ {
+ c2l(in,tin0); tin[0]=tin0;
+ c2l(in,tin1); tin[1]=tin1;
+ des_encrypt((DES_LONG *)tin,schedule,DES_DECRYPT);
+ tout0=tin[0]^xor0;
+ tout1=tin[1]^xor1;
+ l2c(tout0,out);
+ l2c(tout1,out);
+ xor0=tin0;
+ xor1=tin1;
+ }
+ if (l != -8)
+ {
+ c2l(in,tin0); tin[0]=tin0;
+ c2l(in,tin1); tin[1]=tin1;
+ des_encrypt((DES_LONG *)tin,schedule,DES_DECRYPT);
+ tout0=tin[0]^xor0;
+ tout1=tin[1]^xor1;
+ l2cn(tout0,tout1,out,l+8);
+ /* xor0=tin0;
+ xor1=tin1; */
+ }
+ }
+ tin0=tin1=tout0=tout1=xor0=xor1=0;
+ tin[0]=tin[1]=0;
+}
+
+static void des_encrypt2(DES_LONG *data, des_key_schedule ks, int enc)
+{
+ register DES_LONG l,r,t,u;
+#ifdef DES_PTR
+ register unsigned char *des_SP=(unsigned char *)des_SPtrans;
+#endif
+#ifndef DES_UNROLL
+ register int i;
+#endif
+ register DES_LONG *s;
+
+ r=data[0];
+ l=data[1];
+
+ /* Things have been modified so that the initial rotate is
+ * done outside the loop. This required the
+ * des_SPtrans values in sp.h to be rotated 1 bit to the right.
+ * One perl script later and things have a 5% speed up on a sparc2.
+ * Thanks to Richard Outerbridge <71755.204@CompuServe.COM>
+ * for pointing this out.
+ * clear the top bits on machines with 8byte longs */
+ r=ROTATE(r,29)&0xffffffffL;
+ l=ROTATE(l,29)&0xffffffffL;
+
+ s=(DES_LONG *)ks;
+ /* I don't know if it is worth the effort of loop unrolling the
+ * inner loop */
+ if (enc)
+ {
+#ifdef DES_UNROLL
+ D_ENCRYPT(l,r, 0); /* 1 */
+ D_ENCRYPT(r,l, 2); /* 2 */
+ D_ENCRYPT(l,r, 4); /* 3 */
+ D_ENCRYPT(r,l, 6); /* 4 */
+ D_ENCRYPT(l,r, 8); /* 5 */
+ D_ENCRYPT(r,l,10); /* 6 */
+ D_ENCRYPT(l,r,12); /* 7 */
+ D_ENCRYPT(r,l,14); /* 8 */
+ D_ENCRYPT(l,r,16); /* 9 */
+ D_ENCRYPT(r,l,18); /* 10 */
+ D_ENCRYPT(l,r,20); /* 11 */
+ D_ENCRYPT(r,l,22); /* 12 */
+ D_ENCRYPT(l,r,24); /* 13 */
+ D_ENCRYPT(r,l,26); /* 14 */
+ D_ENCRYPT(l,r,28); /* 15 */
+ D_ENCRYPT(r,l,30); /* 16 */
+#else
+ for (i=0; i<32; i+=8)
+{
+ D_ENCRYPT(l,r,i+0); /* 1 */
+ D_ENCRYPT(r,l,i+2); /* 2 */
+ D_ENCRYPT(l,r,i+4); /* 3 */
+ D_ENCRYPT(r,l,i+6); /* 4 */
+}
+#endif
+ }
+ else
+{
+#ifdef DES_UNROLL
+ D_ENCRYPT(l,r,30); /* 16 */
+ D_ENCRYPT(r,l,28); /* 15 */
+ D_ENCRYPT(l,r,26); /* 14 */
+ D_ENCRYPT(r,l,24); /* 13 */
+ D_ENCRYPT(l,r,22); /* 12 */
+ D_ENCRYPT(r,l,20); /* 11 */
+ D_ENCRYPT(l,r,18); /* 10 */
+ D_ENCRYPT(r,l,16); /* 9 */
+ D_ENCRYPT(l,r,14); /* 8 */
+ D_ENCRYPT(r,l,12); /* 7 */
+ D_ENCRYPT(l,r,10); /* 6 */
+ D_ENCRYPT(r,l, 8); /* 5 */
+ D_ENCRYPT(l,r, 6); /* 4 */
+ D_ENCRYPT(r,l, 4); /* 3 */
+ D_ENCRYPT(l,r, 2); /* 2 */
+ D_ENCRYPT(r,l, 0); /* 1 */
+#else
+ for (i=30; i>0; i-=8)
+{
+ D_ENCRYPT(l,r,i-0); /* 16 */
+ D_ENCRYPT(r,l,i-2); /* 15 */
+ D_ENCRYPT(l,r,i-4); /* 14 */
+ D_ENCRYPT(r,l,i-6); /* 13 */
+}
+#endif
+}
+ /* rotate and clear the top bits on machines with 8byte longs */
+ data[0]=ROTATE(l,3)&0xffffffffL;
+ data[1]=ROTATE(r,3)&0xffffffffL;
+ l=r=t=u=0;
+}
+
+/**
+ * Single block 3DES EDE encrypt routine
+ */
+static void des_encrypt3(DES_LONG *data, des_key_schedule ks1,
+ des_key_schedule ks2, des_key_schedule ks3)
+{
+ register DES_LONG l,r;
+
+ l=data[0];
+ r=data[1];
+ IP(l,r);
+ data[0]=l;
+ data[1]=r;
+ des_encrypt2((DES_LONG *)data,ks1,DES_ENCRYPT);
+ des_encrypt2((DES_LONG *)data,ks2,DES_DECRYPT);
+ des_encrypt2((DES_LONG *)data,ks3,DES_ENCRYPT);
+ l=data[0];
+ r=data[1];
+ FP(r,l);
+ data[0]=l;
+ data[1]=r;
+}
+
+/**
+ * Single block 3DES EDE decrypt routine
+ */
+static void des_decrypt3(DES_LONG *data, des_key_schedule ks1,
+ des_key_schedule ks2, des_key_schedule ks3)
+{
+ register DES_LONG l,r;
+
+ l=data[0];
+ r=data[1];
+ IP(l,r);
+ data[0]=l;
+ data[1]=r;
+ des_encrypt2((DES_LONG *)data,ks3,DES_DECRYPT);
+ des_encrypt2((DES_LONG *)data,ks2,DES_ENCRYPT);
+ des_encrypt2((DES_LONG *)data,ks1,DES_DECRYPT);
+ l=data[0];
+ r=data[1];
+ FP(r,l);
+ data[0]=l;
+ data[1]=r;
+}
+
+/**
+ * 3DES EDE CBC encrypt/decrypt routine
+ */
+static void des_ede3_cbc_encrypt(des_cblock *input, des_cblock *output, long length,
+ des_key_schedule ks1, des_key_schedule ks2,
+ des_key_schedule ks3, des_cblock *ivec, int enc)
+{
+ register DES_LONG tin0,tin1;
+ register DES_LONG tout0,tout1,xor0,xor1;
+ register unsigned char *in,*out;
+ register long l=length;
+ DES_LONG tin[2];
+ unsigned char *iv;
+
+ in=(unsigned char *)input;
+ out=(unsigned char *)output;
+ iv=(unsigned char *)ivec;
+
+ if (enc)
+ {
+ c2l(iv,tout0);
+ c2l(iv,tout1);
+ for (l-=8; l>=0; l-=8)
+ {
+ c2l(in,tin0);
+ c2l(in,tin1);
+ tin0^=tout0;
+ tin1^=tout1;
+
+ tin[0]=tin0;
+ tin[1]=tin1;
+ des_encrypt3((DES_LONG *)tin,ks1,ks2,ks3);
+ tout0=tin[0];
+ tout1=tin[1];
+
+ l2c(tout0,out);
+ l2c(tout1,out);
+ }
+ if (l != -8)
+ {
+ c2ln(in,tin0,tin1,l+8);
+ tin0^=tout0;
+ tin1^=tout1;
+
+ tin[0]=tin0;
+ tin[1]=tin1;
+ des_encrypt3((DES_LONG *)tin,ks1,ks2,ks3);
+ tout0=tin[0];
+ tout1=tin[1];
+
+ l2c(tout0,out);
+ l2c(tout1,out);
+ }
+ iv=(unsigned char *)ivec;
+ l2c(tout0,iv);
+ l2c(tout1,iv);
+ }
+ else
+ {
+ register DES_LONG t0,t1;
+
+ c2l(iv,xor0);
+ c2l(iv,xor1);
+ for (l-=8; l>=0; l-=8)
+ {
+ c2l(in,tin0);
+ c2l(in,tin1);
+
+ t0=tin0;
+ t1=tin1;
+
+ tin[0]=tin0;
+ tin[1]=tin1;
+ des_decrypt3((DES_LONG *)tin,ks1,ks2,ks3);
+ tout0=tin[0];
+ tout1=tin[1];
+
+ tout0^=xor0;
+ tout1^=xor1;
+ l2c(tout0,out);
+ l2c(tout1,out);
+ xor0=t0;
+ xor1=t1;
+ }
+ if (l != -8)
+ {
+ c2l(in,tin0);
+ c2l(in,tin1);
+
+ t0=tin0;
+ t1=tin1;
+
+ tin[0]=tin0;
+ tin[1]=tin1;
+ des_decrypt3((DES_LONG *)tin,ks1,ks2,ks3);
+ tout0=tin[0];
+ tout1=tin[1];
+
+ tout0^=xor0;
+ tout1^=xor1;
+ l2cn(tout0,tout1,out,l+8);
+ xor0=t0;
+ xor1=t1;
+ }
+
+ iv=(unsigned char *)ivec;
+ l2c(xor0,iv);
+ l2c(xor1,iv);
+ }
+ tin0=tin1=tout0=tout1=xor0=xor1=0;
+ tin[0]=tin[1]=0;
+}
+
+/**
+ * Implementation of crypter_t.decrypt for DES.
+ */
+static void decrypt(private_des_crypter_t *this, chunk_t data, chunk_t iv,
+ chunk_t *decrypted)
+{
+ des_cblock ivb;
+ u_int8_t *out;
+
+ out = data.ptr;
+ if (decrypted)
+ {
+ *decrypted = chunk_alloc(data.len);
+ out = decrypted->ptr;
+ }
+ memcpy(&ivb, iv.ptr, sizeof(des_cblock));
+ des_cbc_encrypt((des_cblock*)(data.ptr), (des_cblock*)out,
+ data.len, this->ks, &ivb, DES_DECRYPT);
+}
+
+
+/**
+ * Implementation of crypter_t.decrypt for DES.
+ */
+static void encrypt(private_des_crypter_t *this, chunk_t data, chunk_t iv,
+ chunk_t *encrypted)
+{
+ des_cblock ivb;
+ u_int8_t *out;
+
+ out = data.ptr;
+ if (encrypted)
+ {
+ *encrypted = chunk_alloc(data.len);
+ out = encrypted->ptr;
+ }
+ memcpy(&ivb, iv.ptr, sizeof(des_cblock));
+ des_cbc_encrypt((des_cblock*)(data.ptr), (des_cblock*)out,
+ data.len, this->ks, &ivb, DES_ENCRYPT);
+}
+
+/**
+ * Implementation of crypter_t.decrypt for 3DES.
+ */
+static void decrypt3(private_des_crypter_t *this, chunk_t data, chunk_t iv,
+ chunk_t *decrypted)
+{
+ des_cblock ivb;
+ u_int8_t *out;
+
+ out = data.ptr;
+ if (decrypted)
+ {
+ *decrypted = chunk_alloc(data.len);
+ out = decrypted->ptr;
+ }
+ memcpy(&ivb, iv.ptr, sizeof(des_cblock));
+ des_ede3_cbc_encrypt((des_cblock*)(data.ptr), (des_cblock*)out,
+ data.len, this->ks3[0], this->ks3[1], this->ks3[2],
+ &ivb, DES_DECRYPT);
+}
+
+/**
+ * Implementation of crypter_t.decrypt for 3DES.
+ */
+static void encrypt3(private_des_crypter_t *this, chunk_t data, chunk_t iv,
+ chunk_t *encrypted)
+{
+ des_cblock ivb;
+ u_int8_t *out;
+
+ out = data.ptr;
+ if (encrypted)
+ {
+ *encrypted = chunk_alloc(data.len);
+ out = encrypted->ptr;
+ }
+ memcpy(&ivb, iv.ptr, sizeof(des_cblock));
+ des_ede3_cbc_encrypt((des_cblock*)(data.ptr), (des_cblock*)out,
+ data.len, this->ks3[0], this->ks3[1], this->ks3[2],
+ &ivb, DES_ENCRYPT);
+}
+
+/**
+ * Implementation of crypter_t.get_block_size.
+ */
+static size_t get_block_size (private_des_crypter_t *this)
+{
+ return sizeof(des_cblock);
+}
+
+/**
+ * Implementation of crypter_t.get_key_size.
+ */
+static size_t get_key_size (private_des_crypter_t *this)
+{
+ return this->key_size;
+}
+
+/**
+ * Implementation of crypter_t.set_key for DES.
+ */
+static void set_key(private_des_crypter_t *this, chunk_t key)
+{
+ des_set_key((des_cblock*)(key.ptr), &this->ks);
+}
+
+/**
+ * Implementation of crypter_t.set_key for 3DES.
+ */
+static void set_key3(private_des_crypter_t *this, chunk_t key)
+{
+ des_set_key((des_cblock*)(key.ptr) + 0, &this->ks3[0]);
+ des_set_key((des_cblock*)(key.ptr) + 1, &this->ks3[1]);
+ des_set_key((des_cblock*)(key.ptr) + 2, &this->ks3[2]);
+}
+
+/**
+ * Implementation of crypter_t.destroy and des_crypter_t.destroy.
+ */
+static void destroy(private_des_crypter_t *this)
+{
+ free(this);
+}
+
+/*
+ * Described in header
+ */
+des_crypter_t *des_crypter_create(encryption_algorithm_t algo)
+{
+ private_des_crypter_t *this = malloc_thing(private_des_crypter_t);
+
+ /* functions of crypter_t interface */
+ this->public.crypter_interface.get_block_size = (size_t (*) (crypter_t *)) get_block_size;
+ this->public.crypter_interface.get_key_size = (size_t (*) (crypter_t *)) get_key_size;
+ this->public.crypter_interface.destroy = (void (*) (crypter_t *)) destroy;
+
+ /* use functions depending on algorithm */
+ switch (algo)
+ {
+ case ENCR_DES:
+ this->key_size = sizeof(des_cblock);
+ this->public.crypter_interface.set_key = (void (*) (crypter_t *,chunk_t)) set_key;
+ this->public.crypter_interface.encrypt = (void (*) (crypter_t *, chunk_t,chunk_t, chunk_t *)) encrypt;
+ this->public.crypter_interface.decrypt = (void (*) (crypter_t *, chunk_t , chunk_t, chunk_t *)) decrypt;
+ break;
+ case ENCR_3DES:
+ this->key_size = 3 * sizeof(des_cblock);
+ this->public.crypter_interface.set_key = (void (*) (crypter_t *,chunk_t)) set_key3;
+ this->public.crypter_interface.encrypt = (void (*) (crypter_t *, chunk_t,chunk_t, chunk_t *)) encrypt3;
+ this->public.crypter_interface.decrypt = (void (*) (crypter_t *, chunk_t , chunk_t, chunk_t *)) decrypt3;
+ break;
+ default:
+ free(this);
+ return NULL;
+ }
+ return &this->public;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-10 10:24:25 +0000