| /* 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 |
